• 专利附录
  • 专利说明
  • 权利要求
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    • 专利摘要:
    The present invention provides a process for preparing a super-hydrophobic / super-oleophobic garment having excellent performance and its applications, said process comprising: dispersing nanoparticles and a cell in an alcoholic solution containing basic substances, adding orthosilicate of tetraethyl and a fluorinated organosilane, hydrolyze and coat the nanoparticles to obtain a solution A; dispersing an epoxy resin in an alcoholic solution to obtain a solution B; mix solution A and solution B well, add tetraethyl orthosilicate and fluorinated organosilane, leave to react to obtain a solution C of polysiloxane; dissolving a fluorinated amine in the alcoholic solution to obtain a solution D; Mix solution C and solution D well, spray the mixture onto a substrate and allow to solidify to complete. A multilevel micro-nano structure is formed, which exhibits good chemical stability, a complete repellent effect on droplets of N, N-dimethylformamide (34.4 mN / m), and a contact angle with n-hexadecane (27.1 mN / m) of about 120 °, and has the advantages such as simple preparation process and possibility of large-scale spraying, which enables industrialization of super-hydrophobic / super-oleophobic coating .
    公开号:BE1026950B1
    申请号:E20205257
    申请日:2020-04-19
    公开日:2021-07-16
    发明作者:Liang Zheng；Xingxiang Ji；Libin Liu；Haihui Jiang；Hailong Zhang；Xuelin Li
    申请人:Univ Qilu Technology；
    IPC主号:
    专利说明:

    Preparation and application of a super-hydrophobic / super-oleophobic coating with excellent performance
    TECHNICAL FIELD The present invention relates to the field of the preparation of dual superlyophobic materials, and in particular relates to a superhydrophobic / super-oleophobic coating having excellent performance.
    TECHNICAL BACKGROUND The information on the technical background part is given only to better understand the general context of the present invention and should not necessarily be taken as an acknowledgment or suggestion in any form meaning that this information is art. existing already known to those skilled in the art. Generally, when a drop of water falls on a surface, a static contact angle between the drop of water and this surface is greater than 150 ° and a slip angle is less than 10 °, this surface can be called super hydrophobic surface. Inspired by the natural self-cleaning effect of lotus leaves, super-hydrophobic coatings developed rapidly. Superhydrophobic coatings with excellent performance have been developed by simulating the special surface structure of lotus leaves. Studies show that two most important conditions for forming superhydrophobic coatings are micro-nano structure and modification of low surface energy substances, which can find very many applications in fields such as self-cleaning, anti-icing and oil-water separation. However, with the rapid development of the industry, the mono-super-hydrophobic coatings can no longer meet the actual needs, and the coatings having both the super-hydrophobic property and the super-oleophobic property are attracting the attention of researchers. . However, the preparation of the super-oleophobic / oleophobic surface has always been a problem, as its surface tension is much lower than that of water, which often causes wetting and contamination of the contact surface. Therefore, there are more stringent requirements on the choice of materials and the formation of the structure of the coating.
    Outta 0920/5257 in practical applications, friction occurs during contact between most super-lyophobic coatings and external objects, which will damage the coating structure and low surface energy substances, even causing loss of l1yophobic property of the coating and therefore poses a challenge to the mechanical stability of the coating.
    In addition, lyophobic coatings can optionally be used in harsh environments such as a strong acidic or basic environment or at very high or very low temperatures, which also poses a challenge for the stability of the coating.
    Currently, most studies of super-oleophobic / oleophobic coatings are at the laboratory stage with the shortcomings such as high cost of preparation, complicated steps, poor operability, low efficiency of preparation, difficulty in processing. large-scale preparation, furthermore, in general, the lyophobic property of the coating cannot be compatible with the adhesion of the coating, that is, a lyophobic coating is not resistant to abrasion and an abrasion resistant coating is not very lyophobic and the coating adhesion problem is always the most difficult obstacle to overcome for the industrialization of the coating.
    DISCLOSURE OF THE INVENTION To solve the above problems, the present invention provides a process for preparing a superhydrophobic / super-oleophobic coating having excellent performance and studies on its performance.
    A super-hydrophobic / super-oleophobic coating having a multilevel micro-nano structure was prepared with low cost, which exhibits good mechanical properties, good chemical stability, complete repellency effect on droplets of N, N- dimethylformamide having a surface tension of 34.4 mN / m, and a contact angle with n-hexadecane (27.1 mN / m) of about 120 °. It has the advantages such as a simple preparation process and the possibility of large-scale spraying, and allows the industrialization of superhydrophobic / super-oleophobic coating.
    For the above purpose, the technical solution of the present invention is as follows: A process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance comprises: BE2020 / 5257 dispersing nanoparticles and cellulose in an alcoholic solution containing basic substances, add tetraethyl orthosilicate and a fluorinated organosilane, hydrolyze to obtain SiO2, and coat the nanoparticles to obtain solution A; dispersing an epoxy resin in an alcoholic solution to obtain a solution B; mix solution A and solution B well, add tetraethyl orthosilicate and fluorinated organosilane, leave to react to obtain polysiloxane solution C; dissolving a fluorinated amine in the alcoholic solution to obtain a solution D; Mix solution C and solution D well, spray the mixture onto a substrate and allow to solidify to complete.
    According to the present invention, a cellulose having a short bar-shaped structure is used to efficiently deposit nanoparticles of different sizes thereon and thereby form different deposition phases, and then the hydrolysis of tetraethyl orthosilicate is used for two-way treatment. steps, either hydrolyze to coat and form polysiloxane, in order to obtain a micro-nano structure having a multi-level roughness, finally, the structure obtained is combined with an epoxy resin having a good adhesion to obtain a super-hydrophobic surface / Low cost super-oleophobic, which has good abrasion resistance and chemical stability.
    In some embodiments, the mass ratio of the nanoparticles and the cellulose is 4-6: 5 -8, so that the nanoparticles are distributed on the cellulose more evenly, which improves the resistance of the coating and the bond with epoxy resin.
    The specific composition of the nanoparticles is not particularly limited in the present invention, in certain exemplary embodiments, said nanoparticle is at least one selected from montmorillonite, hectorite, attapulgite, hydrotalcite, kaolinite, silicon dioxide, titanium dioxide, zinc oxide, alumina, carbon nanotubes and graphene oxide to prepare super-hydrophobic / super-oleophobic surfaces having the performance to meet various needs.
    The specific composition of the fluorinated organosilane is not particularly limited in the present invention, in certain embodiments, the fluorinated organosilane is at least one selected from heptafluorodecyltrimethoxysilane, perfluorooctyltrichlorosilane,
    the perfluorooctyltriméthoxysilane the perfluorooctyltriéthoxysilane I perfluorodécyltrichlorosilane 9020/5297, the perfluorodécyltriméthoxysilane the perfluorodecyltriethoxysilane, the perfluorooctyldiméthyl, = the chlorosilane, the perfluorooctyldiméthylméthoxysilane the perfluorodécyldiméthylchlorosilane and perfluorodécyldiméthylméthoxysilane for introducing fluorine to reduce the surface energy, while forming a micro -nano structure having a multi-level roughness. In some embodiments, the step for coating the nanoparticles consists of: dispersing the nanoparticles and the cellulose in an alcoholic solution containing basic substances, heating the mixture to 60 ° C-65 ° C, then successively adding sodium orthosilicate. tetraethyl and fluorinated organosilane, leave to react at 60 ° C-65 ° C for 3-4 h, coat the nanoparticles with SiO2 obtained to obtain a multilevel structure.
    In some embodiments, the ratio of tetraethyl orthosilicate and fluorinated organosilane introduced into solution λ is 2 - 4: 1, which reduces the surface energy of the coating while effectively enveloping the nanoparticles; In certain embodiments, the mass concentration of the epoxy resin in solution B is 0.2-0.5 g / ml; The multilevel micro-nano structure is bonded with epoxy resin to achieve good abrasion resistance and chemical stability.
    In some embodiments, the mass ratio of tetraethyl orthosilicate and fluorinated organosilane introduced into solution C is 1 - 3: 1-3, which improves reaction efficiency and yield.
    In some embodiments, the step to obtain the polysiloxane consists of: mixing solution A and solution B well, stirring at 60 ° C-65 ° C for 2-3 hours, then quickly adding the tetraethyl orthosilicate and fluorinated organosilane, stir again for 2-3 hours to obtain; which makes it possible to reduce surface energy, while forming a micro-nano structure with multi-level roughness.
    In some embodiments, the preparation of the fluorinated amine consists of: mixing heptafluorobutyric acid and aminoethyl aminopropyl trimethoxysilane and homogenizing, allowing to react to form an epoxy resin solidifying agent and at the same time introducing the introduction fluorine to reduce surface energy; In some embodiments, the volume ratio of heptafluorobutyric acid and aminoethyl aminopropyl trimethoxysilane is 1 - 1.5: 1 - 1.4, which makes it possible to obtain at 9020/5297 both a good effect solidification and good surface energy reduction effect. The present invention further provides a superhydrophobic / super-oleophobic coating having excellent performance prepared by one of the above methods. The invention also provides the applications of the above superhydrophobic / oleophobic coating in petroleum transportation and storage and creep prevention. The present invention has the following beneficial effects: (1) According to the present invention, nanoparticles and cellulose of different sizes are used to form a micro-nano structure having multi-level roughness, and the obtained structure is combined with a epoxy resin having good adhesion to obtain a super-hydrophobic / super-oleophobic surface having good performance, which brings new ideas for a true industrialization. (2) The super-hydrophobic / super-oleophobic surface according to the present invention not only exhibits excellent hydrophobic and oleophobic properties, but good abrasion resistance and chemical stability, which can withstand the friction generated by a heavy object. of 500 g and to erosion caused by a temperature up to 220 ° C or by a solution of hydrochloronitric acid. (3) The method according to the present invention has the advantages such as simplicity of operation, low cost, wide application range and ease of large-scale production.
    DESCRIPTION OF THE FIGURES The present invention will be better understood with reference to the appended figures, and the examples given to explain the present invention are given only by way of illustrative and non-limiting example. Figure 1 is an actual view of friction cycle testing in Example |. (a) a friction cycle tester under a load of 5000 N, (b) a glass sheet is coated with a coating for a friction test, (c) the contact angles corresponding to the drops of the liquids at the end friction cycles;
    Figure 2 is a superhydrophobic / super-oleophobic performance test scheme on the 9020/5297 coating in Example 1. (a) Changes in contact angle and slip angle of DMF at the end of a certain period of immersion of the coating in hydrochloronitric acid. (b) The changes in contact angle and slip angle of DMF corresponding to the different temperatures and environments in which the coating is located.
    EMBODIMENTS It should be noted that the detailed description below is only illustrative in order to better understand the present invention. It should be noted that, unless otherwise indicated, all technical and scientific terms used in the present invention have the same meaning as those well known to those skilled in the art.
    Note that the terms used herein are intended to describe embodiments only, instead of limiting the embodiment. Unless otherwise indicated, the singular form includes the plural, furthermore, the words used herein "include" and / or "include", indicate the presence of the characteristic, step, work, device, component and / or the combination of these.
    As described in the technical background, in general, the lyophobic property of the coating cannot be compatible with the adhesion of the coating, that is, a lyophobic coating is not resistant to abrasion and that 'an abrasion resistant coating is not very lyophobic. The present invention therefore provides a process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance, which comprises: dispersing nanoparticles and a cellulose in an alcoholic solution containing basic substances, adding tetraethyl orthosilicate and a fluorinated organosilane, hydrolyze to obtain SiO ;, and coat the nanoparticles to obtain a solution A; dispersing an epoxy resin in an alcoholic solution to obtain a solution B; mix solution A and solution B well, add tetraethyl orthosilicate and fluorinated organosilane, leave to react to obtain polysiloxane solution C; dissolving a fluorinated amine in the alcoholic solution to obtain a solution D;
    Mix solution C and solution D well, spray the mixture onto a substrate and allow 9020/5297 to solidify to complete. The alcoholic solution in the present invention can be a solution of methanol or ethanol.
    The epoxy resin may be at least one selected from bisphenol A epoxy resin, bisphenol F epoxy resin, hydrogenated bisphenol A epoxy resin, methylol bisphenol A epoxy resin and bromine modified propane diphenol epoxy resin.
    The coating according to the present invention can be sprayed onto inorganic substrates, such as ceramic, wood, steel and aluminum.
    The present invention can be described in more detail below via the exemplary embodiments. It should be noted that said exemplary embodiments are illustrative for the present invention, but not limiting.
    Example 1: I. Preparation of a super-hydrophobic / super-oleophobic coating
    1. Preparation of a super-hydrophobic / super-oleophobic coating> Take 0.4 g of SiO; of 50nm and 0.5 g of 25 μm cellulose, disperse the two in a mixed solution composed of 30 ml of absolute ethanol and 10 ml of ammonia, stir under ultrasound for 30 min, warm in a water bath at 60 ° C, add to the mixture 2 ml of tetraethyl orthosilicate (TEOS) dropwise add to the mixture 1 ml of heptafluorodecyltrimethoxysilane (FAS) dropwise, and stir at 60 ° C for 4 hours to obtain a solution. > Take 1 g of bisphenol A epoxy resin (E51) and dissolve in 5 ml of absolute ethanol and stir under ultrasound for 30 min, in order to dissolve completely and thus obtain solution B. Mix solution A and solution B , stir at 60 ° C for 2 hours, quickly add 0.6 ml of TEOS and 0.6 ml of FAS, and stir again for 2 hours to obtain solution C.
    Preparation of solidifying agent> Take 2.22 ml of aminoethyl aminopropyl trimethoxysilane (AS) and dissolve in 10 ml of deionized water, take 2.14 ml of heptafluorobutyric acid and dissolve in 10 ml of deionized water, a Once the dissolution is complete, introduce the solution of heptafluorobutyric acid dropwise into the aqueous solution of AS, then leave to react at 100 49205297 C, remove the solvent by evaporation to obtain a colloidal product at the end of the reaction, add the product colloidal in 10 ml of absolute ethanol and dissolve under ultrasound to obtain solution D. Mix solution C and solution D, stir at 60 ° C for 30 min to obtain a super-hydrophobic / super-oleophobic suspension.
    2. Preparation of a super-hydrophobic / super-oleophobic coating> Spray 2 ml of the super-hydrophobic / super-oleophobic suspension obtained on a glass sheet with a thickness of about 0.2 mm (3 * 8 cm) uniformly with a gun under a pressure of 400 kPa, and leave to solidify in a vacuum oven at 90 ° C for 12 hours to obtain a superhydrophobic / super-oleophobic coating. II. Study on the mechanical performance of the coating The static contact angle and the sliding angle are measured with a contact angle system KRÜSSDSA25S (Germany). At least five samples from different areas of a coating were tested to obtain the average values of the static contact angle and the slip angle. When a super-hydrophobic / super-oleophobic coating is exposed to air, the friction and contact caused by mechanical force not only degrades the structure having multi-level roughness of the coating surface, but also the adhesion of substances with low surface energy to the substrate, these are the two which are the key elements to obtain the super-hydrophobic / super-oleophobic performance of the coating. Here, the mechanical properties of the coating will be investigated using a cyclic friction machine under a load of 5000 N (a product of the High-speed Rail Test Instrument Company, model GT-7034-B, with a load of 500 g), which makes it possible to test the abrasion resistance of the coating, a cycle comprising five rubs (one cycle is 10 cm). The test results are shown below in Figure 1. Figure 1 is an actual view of friction cycle testing, at the end of five friction cycles, no detachment is observed on the coating. In Figure 1, c shows the results of the contact angle between the superhydrophobic / super-oleophobic surface and liquids with different surface tensions at the end of friction cycles. It can be observed that the contact angle with water has become 168.8 ° at the end of five friction cycles and 163.3 ° at the end of ten 9020/5297 friction cycles, and that the coating is still superlyophobic to DMF at the end of 20 additional friction cycles, and the contact angle with n-hexadecane becomes 93.2 ° while maintaining the lyophobic effect.
    This mechanical damage does not degrade the super-hydrophobic / super-oleophobic performance of the coating surface, which shows that the coating according to the present invention has good mechanical stability.
    Its good abrasion resistance can be attributed to the fact that the epoxy resin bonding the multilevel micro-nano structure exhibits good abrasion resistance, which makes it resistant to mechanical abrasions of certain levels. III.
    Coating Chemical Stability Test Super-hydrophobic / super-oleophobic materials having excellent chemical stability can be used in many fields, therefore, improving the chemical stability of materials has become an important subject to study.
    In the present invention, the static contact angle and the rolling angle formed between the water drops and DMF are measured at extreme temperatures and in hydrochloronitric acid media (including the volume ratio of concentrated hydrochloric acid and the concentrated nitric acid is 3: 1), in order to evaluate the chemical stability of the coating, the test results of which are presented in a and b of figure 2. The tests consist in: putting a coating at 220 ° C for 6 hours then at 25 ° below ice for 24 hours, allow it to come to room temperature and measure the contact angle and the slip angle of DMF.
    It can be observed that the contact angle of DMF is always greater than 150 ° and the slip angle is always less than 10 °. In the present invention, the tests also consist in: putting a coating at different temperatures (putting a coating at test temperature for 6 hours, allowing it to come to room temperature, adding the drops of DMF and measuring the angle of contact and slip angle of DMF), the changes in contact angle and corresponding slip angle are shown in b of Figure 2, which shows that the coating of the present invention has excellent strength. at extreme temperatures.
    Additionally, in the present invention, a hydrochloronitric acid solution is prepared to test the chemical resistance of the coating, although this extreme environment is not common in practical applications, it is also a most direct measure for evaluating performance. of the coating. A 9020/5297 cycle of the test according to the present invention is 30 minutes and includes: collecting samples, cleaning with water and drying, measuring changes in contact angle and slip angle of DMF as shown in b of FIG. 2, which makes it possible to evaluate the performance of the coating. At the end of three cycles, it can be observed that DMF still has high values of contact angle and roll angle, and still has excellent performance. IV. Summary According to the present invention, silicon dioxide and cellulose of different sizes are used to form a micro-nano structure having multi-level roughness, and the resulting structure is combined with an epoxy resin having good adhesion to obtain a super-hydrophobic / super-oleophobic surface having good performance, which brings new ideas for a true industrialization. Example 2
    1. Preparation of a super-hydrophobic / super-oleophobic coating> Take 0.6g of 50nm SiO »and 0.8g of 25 µm cellulose, disperse the two in a mixed solution composed of 30 ml of absolute ethanol and 10 ml of ammonia, stir under ultrasound for 30 min, heat in a water bath at 63 °, add to the mixture 4m! of tetraethyl orthosilicate (TEOS) dropwise, add to the = - mixture 1 ml of heptafluorodecyltrimethoxysilane (FAS) dropwise, and stir at 63 ° for 3.5 hours to obtain a solution. > Take 2.5g of bisphenol A epoxy resin (E51) and dissolve in 5 ml of absolute ethanol and stir under ultrasound for 30 min, in order to dissolve completely and thus obtain solution B. Mix solution A and solution B, stir at 63 ° C for 3 hours, quickly add 0.6 ml of TEOS and 0.2 ml of FAS, and stir again for 2 hours to obtain a solution C. Preparation of solidifying agent> Take 2.22 ml of aminoethyl aminopropyl trimethoxysilane (AS) and dissolve in 10 ml of deionized water, take 2.14 ml of heptafluorobutyric acid and dissolve in 10 ml of deionized water, once complete dissolution, introduce the acid solution heptafluorobutyric acid drop by drop in the aqueous solution of AS, then leave to react at 100 49205297 C, remove the solvent by evaporation to obtain a colloidal product at the end of the reaction, add the colloidal product in 10 ml of absolute ethanol and dissolve under ultrasound to obtain a solution D. Mix solution C and solution D, stir at 60 ° C for 30 min to obtain a super-hydrophobic / super-oleophobic suspension.
    2. Preparation of a super-hydrophobic / super-oleophobic coating> Spray 2 ml of the super-hydrophobic / super-oleophobic suspension obtained on a glass sheet with a thickness of about 0.2 mm (3 * 8 cm) uniformly with a gun under a pressure of 400 kPa, and leave to solidify in a vacuum oven at 90 ° C for 12 hours to obtain a superhydrophobic / super-oleophobic coating.
    Example 3:
    1. Preparation of a super-hydrophobic / super-oleophobic coating> Take 0.4g of 50nm SiO »and 0.6g of 25 µm cellulose, disperse the two in a mixed solution composed of 30 ml of absolute ethanol and 10 ml of ammonia, stir under ultrasound for 30 min, heat in a water bath at 65 °, add to the mixture 3 ml of tetraethyl orthosilicate (TEOS) drop by drop add to the - mixture 1 ml of heptafluorodecyltrimethoxysilane (FAS) dropwise, and stir at 65 ° for 3 hours to obtain solution A.
    > Take 1.8g of bisphenol A epoxy resin (E51) and dissolve in 5 ml of absolute ethanol and stir under ultrasound for 30 min, in order to completely dissolve and thus obtain solution B, Mix solution A and solution B, stir at 65 ° C for 2.5 hours, quickly add 0.6 ml of TEOS and 0.3 ml of FAS, and stir again for 2 hours to obtain solution C.
    Preparation of solidifying agent> Take 2.22 ml of aminoethyl aminopropyl trimethoxysilane (AS) and dissolve in 10 ml of deionized water, take 2.14 ml of heptafluorobutyric acid and dissolve in 10 ml of deionized water, a Once the dissolution is complete, introduce the solution of heptafluorobutyric acid dropwise into the aqueous solution of AS, then leave to react at 100 ° C, remove the solvent by evaporation to obtain a colloidal product at the end of the reaction,
    add the colloidal product in 10 ml of absolute ethanol and dissolve under ultrasound to obtain 2020/5257 a solution D. Mix solution C and solution D, stir at 60 ° C for 30 min to obtain a super-hydrophobic / super suspension -oleophobic.
    2. Preparation of a super-hydrophobic / super-oleophobic coating> Spray 2 ml of the super-hydrophobic / super-oleophobic suspension obtained on a glass sheet with a thickness of about 0.2 mm (3 * 8 cm) uniformly with a gun under a pressure of 400 kPa, and leave to solidify in a vacuum oven at 90 ° C for 12 hours to obtain a superhydrophobic / super-oleophobic coating.
    Example 4 Compared to Example 1, this example is different in that the nanoparticle is montmorillonite. Example 5 Compared to Example 1, this example is different in that the nanoparticle is hydrotalcite. Example 6 Compared to Example 1, this example is different in that the nanoparticle is Zinc oxide. Example 7 Compared to Example 1, this example is different in that the nanoparticle is graphene oxide. Example 8 Compared to Example 1, this example is different in that the fluorinated organosilane in solution A is perfluorooctyltrichlorosilane.
    Example 9 Compared to Example 1, this example is different in that the fluorinated organosilane in solution A is perfluorodecyltrichlorosilane. Example 10 Compared to Example 1, this example is different in that the fluorinated organosilane in solution A is perfluorooctyldimethylmethoxysilane.
    Example 11 BE2020 / 5257 Compared to Example 1, this example is different in that the fluorinated organosilane in solution A is perfluorooctyltriethoxysilane.
    Finally, it should be noted that the above examples are only the examples preferably, but not limiting; although the present invention will be described in detail with reference to the preceding examples, those skilled in the art will understand that the preceding examples may be modified, or some or all of the technical characteristics may be replaced in an equivalent manner without thereby departing from the scope of the invention. All modifications, replacements and equivalent improvements which respect the spirit and principles of the present invention should be included within the scope of the protection of the present invention. Although the present invention has been described in more detail by the above embodiments with reference to the figures, they do not constitute a limitation on the scope of protection of the present invention. Those skilled in the art will understand that any modifications or variations without creative work should be included within the scope of protection of the present invention.
    权利要求:
    Claims (10)
    [1]
    1. Process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance, characterized in that it comprises: dispersing nanoparticles and cellulose in an alcoholic solution containing basic substances, adding orthosilicate of tetraethyl and a fluorinated organosilane, hydrolyze to obtain SiO2, and coat the nanoparticles to obtain a solution A; dispersing an epoxy resin in an alcoholic solution to obtain a solution B; mix solution A and solution B well, add tetraethyl orthosilicate and fluorinated organosilane, leave to react to obtain polysiloxane solution C; dissolving a fluorinated amine in the alcoholic solution to obtain a solution D; Mix solution C and solution D well, spray the mixture onto a substrate and allow to solidify to complete.
    [2]
    2. Process for preparing a superhydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that the mass ratio of nanoparticles and cellulose is 4-6: 5-8.
    [3]
    3. Process for preparing a superhydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that said nanoparticle is at least one selected from montmorillonite, hectorite, l '. attapulgite, hydrotalcite, kaolinite, silicon dioxide, titanium dioxide, zinc oxide, alumina, carbon nanotubes and graphene oxide.
    [4]
    4. A process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that said fluorinated organosilane is at least one selected from heptafluorodecyltrimethoxysilane, perfluorooctyltrichlorosilane, perfluorooctyltriméthoxysilane the perfluorooctyltriéthoxysilane the perfluorodécyltrichlorosilane the perfluorodécyltriméthoxysilane the perfluorodecyltriethoxysilane, the perfluorooctyldiméthy] chlorosilane, the perfluorooctyldiméthylméthoxysilane the perfluorodécyldiméthylchlorosilane and perfluorodécyldiméthylméthoxysilane for introducing fluorine to reduce the surface energy, while forming a micro-nano BE2020 / 5257 structure having a multi-level roughness.
    [5]
    5. Process for preparing a superhydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that the step for coating the nanoparticles consists of: dispersing nanoparticles and a cellulose in a solution. alcoholic containing basic substances, heat the mixture to 60 ° C-65 ° C, then successively add tetraethyl orthosilicate and fluorinated organosilane and leave to react at 60 ° C-65 ° C for 3-4 h to obtain .
    [6]
    6. A process for preparing a superhydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that, the ratio of tetraethyl orthosilicate and fluorinated organosilane introduced into the solution A is 2 - 4: 1; or the mass concentration of the epoxy resin in solution B is 0.2 - 0.5 g / ml; or the mass ratio of tetraethyl orthosilicate and fluorinated organosilane introduced into solution C is 1 - 3: 1-3.
    [7]
    7. A process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that the step for obtaining the polysiloxane consists of: mixing solution A and solution B well. , stir at 60 ° C-65 ° C for 2-3 hours, then quickly add tetraethyl orthosilicate and fluorinated organosilane, stir again for 2-3 hours to obtain.
    [8]
    8. A process for preparing a super-hydrophobic / super-oleophobic coating having excellent performance according to claim 1, characterized in that the preparation of the fluorinated amine consists of: mixing heptafluorobutyric acid and aminoethyl aminopropyl trimethoxysilane and homogenize, leave to react to obtain; preferably, the volume ratio of heptafluorobutyric acid and aminoethyl aminopropyl trimethoxysilane is 1 - 1.5: 1 - 1.4.
    [9]
    9. An excellent performance superhydrophobic / super-oleophobic coating prepared by the process according to any one of claims 1 to 8.
    [10]
    10. Applications of the superhydrophobic / super-oleophobic coating of claim 9 in petroleum transportation and storage and creep prevention.
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    同族专利:
    公开号 | 公开日
    CN111019482A|2020-04-17|
    BE1026950A1|2020-07-30|
    CN111019482B|2021-09-07|
    引用文献:
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    CN104789124A|2014-12-30|2015-07-22|中国科学院兰州化学物理研究所|A preparing method of a stable superamphiphobic surface|
    CN105440888B|2015-12-17|2017-10-17|中国科学院兰州化学物理研究所|A kind of preparation method of the super thin hot liquid coating of stabilization|
    CN106800885A|2016-12-21|2017-06-06|中国科学院兰州化学物理研究所|A kind of large-scale preparation method of transparent hydrophobic/super-amphiphobic coating|
    CN110041741B|2019-04-04|2021-03-02|东南大学|Efficient water-collecting self-cleaning super-amphiphobic coating and preparation method thereof|CN111944359B|2020-08-21|2021-05-18|东北林业大学|Preparation method for constructing micro-nano-level super-hydrophobic coating by self-assembling core-shell type cellulose nanoparticles|
    CN112724782B|2020-12-28|2022-03-04|东北大学|Preparation method of anti-corrosion self-healing super-hydrophobic material based on reversible hydrogen bond group|
    CN112940585A|2021-02-01|2021-06-11|长安大学|Self-cleaning double-hydrophobic coating for degrading NO and preparation method thereof|
    CN113292905A|2021-05-31|2021-08-24|齐鲁工业大学|Flame-retardant, super-wear-resistant and super-hydrophobic three-layer coating and preparation and application thereof|
    CN113105777A|2021-05-31|2021-07-13|齐鲁工业大学|Wear-resistant and stable flame-retardant super-hydrophobic/super-oleophobic coating and preparation and application thereof|
    CN113372815B|2021-06-07|2022-02-25|齐鲁工业大学|Preparation method and application of biomass-based super-hydrophobic coating|
    CN113265200B|2021-06-07|2022-03-04|齐鲁工业大学|Biomass-based superhydrophobic coatings with durability and color diversity and uses thereof|
    CN113322006A|2021-06-07|2021-08-31|齐鲁工业大学|Preparation method and application of biomass-based super-hydrophobic coating with durability and color diversity|
    法律状态:
    2021-08-18| FG| Patent granted|Effective date: 20210716 |
    优先权:
    申请号 | 申请日 | 专利标题
    CN201911348754.5A|CN111019482B|2019-12-24|2019-12-24|Preparation and application of super-hydrophobic/oleophobic coating with excellent performance|
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