Synthetic Rubber Parts and Manufacturing Technique of Rubber & Plastic

专利摘要:
PURPOSE: A synthetic rubber component of rubber and plastic and its preparation method are provided to allow the rubber and plastic to be joined easily for preparing a synthetic rubber component without using an adhesive. CONSTITUTION: The synthetic rubber component comprises (A) 30-35 parts by weight of a rubber composition which comprises (a1) 100 parts by weight of a rubber base consisting of 80-90 wt% of a natural rubber and 10-20 wt% of a styrene-butadiene rubber containing 23 wt% of styrene, (a2) 40-50 parts by weight of carbon black, (a3) 4-5 parts by weight of zinc oxide, (a4) 1-2 parts by weight of an activator, (a5) 1.2-1.5 parts by weight of a heat-resistant antiaging agent, (a6)1.5-2.0 parts by weight of an antioxidant, (a7) 1.5-2.0 parts by weight of an antiozonant, (a8) 3-4 parts by weight of sulfur, and (a9) 1.4-1.8 parts by weight of a vulcanization accelerator; and (B) 10-15 parts by weight of a modified polyphenylene ether.
公开号:KR20030005995A
申请号:KR1020010041531
申请日:2001-07-11
公开日:2003-01-23
发明作者:손병천
申请人:현대자동차주식회사；
IPC主号:

专利说明:

Synthetic Rubber Parts and Manufacturing Technique of Rubber ＆ Plastic}
[3] The present invention relates to a synthetic rubber component of rubber and plastics and a method of manufacturing the same, and more particularly, to a rubber composition composed mainly of natural rubber and styrene butadiene rubber, by directly bonding modified polyphenylene ether, which is an amorphous engineering plastic, to an adhesive. The present invention relates to a synthetic rubber component of rubber and plastic and a method of manufacturing the same, which are effective in reducing the cost by producing a synthetic rubber component of rubber and plastic without a coating process.
[4] Synthetic rubber is a material used in the manufacture of parts in many fields, including automobiles. In order to manufacture such a synthetic rubber component, conventionally, an adhesive is required necessarily when bonding rubber and metal or rubber and plastic. When bonding the rubber and the metal, CHEMLOK was used.
[5] However, in the case of the method, after degreasing the plastic, a process such as primer coating, drying, adhesive coating, drying, and rubber injection has a problem in that the manufacturing process is complicated and takes a lot of time. In addition, the use of steel (steel) is a large weight, the use of adhesives caused environmental pollution, quality control due to the non-automated process was very difficult.
[6] Thus, in order to solve the above problems, the present invention, when the modified polyphenylene ether, which is an amorphous engineering plastic, is directly injected into a rubber containing natural rubber and styrene butadiene rubber at a predetermined ratio, the rubber and the plastic are separate adhesives. It was found that the bonding can be done without the use of to complete the present invention.
[7] Therefore, the object of the present invention is not to use a separate adhesive, cost reduction, weight reduction and process simplification, cost-free and solvent-free by the use of the adhesive is possible, the process is fully automated, quality control is easy accordingly It provides a rubber and plastic synthetic rubber parts and a method of manufacturing the same.
[1] 1 illustrates a synthetic rubber component according to Example 2 of the present invention.
[2] Figure 2 shows a process for producing a synthetic rubber component according to the present invention.
[8] The present invention is a synthetic rubber component,
[9] 1) 40 to 50 parts by weight of carbon black and 4 to 5 parts by weight of zinc oxide, based on 100 parts by weight of the styrene-butadiene rubber containing 23% by weight of natural rubber and styrene in a weight ratio of 80 to 90:20 to 10. , 1 to 2 parts by weight of activator, 1.2 to 1.5 parts by weight of heat aging inhibitor, 1.5 to 2.0 parts by weight of antioxidant, 1.5 to 2.0 parts by weight of ozone aging inhibitor, 3 to 4 parts by weight of sulfur, and 1.4 to 1.8 vulcanization accelerator 30 to 35 parts by weight of the rubber composition containing parts by weight; And
[10] 2) It is characterized by the synthetic rubber parts of rubber and plastic which consist of 10-15 weight part of modified polyphenylene ether.
[11] In addition, the present invention is a method of manufacturing a synthetic rubber component,
[12] 1) injecting 10 to 15 parts by weight of the modified polyphenylene ether with respect to the inner pipe and injecting at a temperature of 175 to 180 ℃; And
[13] 2) 40 to 50 parts by weight of carbon black, 4 to 5 parts by weight of zinc oxide, and an activator in the styrene-butadiene rubber containing 23% by weight of natural rubber and styrene in the first step injection product 1-2 parts by weight, anti-aging agent 1.2-1.5 parts by weight, antioxidant 1.5-2.0 parts by weight, ozone anti-aging agent 1.5-2.0 parts by weight, sulfur 3-4 parts by weight and vulcanization accelerator 1.4-1.8 parts by weight It includes a method for producing a synthetic rubber component of rubber and plastic consisting of a step of injecting a rubber composition 30 to 35 parts by weight with respect to the inner pipe and rubber injection at a temperature of 170 to 175 ℃.
[14] Hereinafter, the present invention will be described in more detail.
[15] The present invention is to reduce the cost by directly injecting a rubber composition based on natural rubber and styrene butadiene rubber and a modified polyphenylene ether, which is an amorphous engineering plastic, in order to develop new rubber and plastic synthetic rubber parts In addition, cost reduction (10-20%) due to weight reduction and process reduction and solvent-free use are possible due to non-use of adhesive, and it provides synthetic rubber parts and its manufacturing method which are easy to control quality due to full automation of process.
[16] Natural rubber (NR) and styrene butadiene rubber (SBR) in the rubber composition used in the present invention and the modified polyphenylene ether, which is plastic, are relatively well bonded because their structures are very similar to each other.
[17] The natural rubber (hereinafter referred to as 'NR') and styrene butadiene rubber (hereinafter referred to as 'SBR'), as shown in the following formulas (1) and (2), because the structure is similar, the bonding is relatively good.
[18]
[19] In Formula 1, n is an integer.
[20] NR represented by Formula 1 is excellent in elasticity and mechanical strength, and SBR and blend (BLEND) is good.
[21]
[22] In Formula 2, n is an integer.
[23] NBR represented by the formula (2) is a good blend of the NR and good bonding to PPE.
[24] In addition, the plastic used in the present invention is characterized by using a modified polyphenylene ether (modif. Polyphenylene Ether, hereinafter 'm-PPE') represented by the formula (3), which is the SBR and benzene ring structure Because of the similarity, the coupling works relatively well.
[25]
[26] M-PPE represented by the formula (3) has a low shrinkage and thermal deformation, excellent water resistance and low density.
[27] The synthetic rubber component of the present invention comprises 30 to 35 parts by weight of the rubber composition based on the natural rubber and styrene butadiene rubber and 10 to 15 parts by weight of a modified polyphenylene ether to be used as a plastic with respect to the inner pipe.
[28] At this time, each component of the rubber composition according to the present invention will be described in detail as follows.
[29] In the present invention, the blending ratio of NR and SBR is 80 to 90: 20 to 10, more preferably 80: 20.
[30] The SBR is preferably styrene butadiene rubber containing 23% by weight of styrene (for example, SBR 1500). That is, a grade having a high styrene content has thermal plastic properties, and thus, it is not preferable to use it in a dynamic product. SBR is not a complete chemical mixing with the m-PPE, but due to the similar chemical structure, the diffusion (Difussion) has a property that can be directly bonded without an adhesive.
[31] In addition, in the rubber composition of the present invention, the carbon black has good smoothness, low internal heat generation and good thermal conductivity. For example, FEF (Fast Extrusion Furnace) is used. It is preferable to use 40-50 weight part of said carbon black with respect to 100 weight part of rubber base materials.
[32] The zinc oxide (ZnO) is used to activate the vulcanization rate, the amount of the zinc oxide (ZnO) is preferably used in 4 to 5 parts by weight (phr) with respect to 100 parts by weight of the rubber substrate.
[33] Stearic acid is used as the activator, and the amount thereof is preferably used in an amount of 1 to 2 parts by weight (phr) based on 100 parts by weight of the rubber substrate.
[34] The anti-aging agent is used for anti-oxidation and heat resistance, for example, HS (2,2,4-trimethy-1,2-dihydro-quinoline, polymerized) (Vulkanox, Mobay Chemical, USA) can be used . It is preferable to use the amount of 1.2-1.5 weight part (phr) with respect to 100 weight part of said rubber base materials.
[35] In addition, the antioxidant is used for antioxidant and ozone resistance. As an example, Vulkanox 4020 (N- (1,3-dimethyl butyl) -N-phenyl-p-phenylene diamine, Mobay Chemical of USA) is used. It is preferable to use the usage-amount in 1.5-2 weight part (phr) with respect to 100 weight part of said rubber base materials.
[36] In addition, the present invention uses Nocrac 660 in an amount of 1.5 to 2 parts by weight (phr) with respect to 100 parts by weight of the rubber substrate as an ozone anti-oxidant for better ozone resistance.
[37] In the rubber composition of the present invention, the sulfur (Sulfur) is preferably used in 3 to 4 parts by weight (phr), when using less than 3 parts by weight of sulfur at room temperature durability is lowered to apply to suspension bushes Difficult problems arise, and when it exceeds 4 weight part, heat resistance durability will fall remarkably.
[38] Preferably, the vulcanization accelerator is used by mixing thiuram and thiazole. For example, 0.7 to 0.9 parts by weight of thiuram-based SOXINOL TT and 0.7 to 0.9 parts by weight of thiazole-based SOXINOL CZ based on 100 parts by weight of the rubber. 0.9 parts by weight is used.
[39] On the other hand, the manufacturing method of the synthetic rubber component according to the present invention, unlike the conventional method consisting of a six-step process, it is possible to produce a synthetic rubber component excellent in the bonding of rubber and plastic even by performing only a two-step process (Fig. 2 Reference).
[40] That is, the present invention performs a step of injecting the inner pipe into the modified polyphenyl ethyr represented by Chemical Formula 3, which is a plastic, in a one step process. The injection is preferably carried out for 2-3 minutes at a temperature of 175 ~ 180 ℃.
[41] Next, a two-step process may be performed by injecting the rubber composition of the substrate into the plastic injection molding to perform rubber injection, thereby preparing a synthetic rubber component having excellent bonding properties without the use of a separate adhesive. The rubber injection is preferably carried out for 3 to 4 minutes at a temperature of 170 ~ 175 ℃.
[42] Process precautions in the present invention should be absolutely clean and it is preferable to work with gloves. Alternatively, it is preferable to clean with toluene or xylene before injecting the rubber.
[43] Hereinafter, the present invention will be described in more detail based on the following examples, but the present invention is not limited thereto.
[44] Example 1
[45] Next, after preparing a rubber composition with the composition and content as shown in Table 1, the physical properties thereof were measured and the results are shown in Table 2 below.
[46]
[47]
[48] Example 2
[49] As shown in Figure 1, 10 parts by weight of m-PPE (modif. Polyphenylene Ether, trade name: VESTORAN 1900) having the physical properties shown in Table 3 with respect to the inner pipe is injected to the inner pipe for 2 to 3 minutes at 180 ℃ Injection. Then, 30 parts by weight of the rubber composition prepared in Example 1 was injected into the injection-molded product against the inner pipe, and then injected at 170 ° C. for 3 to 4 minutes to prepare a synthetic rubber part in which rubber and plastic were bonded.
[50]
[51] The synthetic rubber parts manufactured in this way are lighter than conventional rubber products and cost-effective when applied to parts such as BUSH'G CTR ARM or BUSH'G TRAIL'G ARM of large vehicles. It is economical because it is much lower.
[52] As described above, according to the present invention, by combining a fixed ratio of natural rubber and styrene butadiene rubber having a similar structure with a modified polyphenylene ether, which is an amorphous engineering plastic, to manufacture a synthetic rubber component, it is possible to bond without using an adhesive. In addition to cost reduction and solvent-free operation due to non-use of adhesives, cost savings are achieved, and weight is reduced because steel is not used. In particular, cost reduction (10-20%) due to process reduction and complete process Quality control by automation is easy and can be used effectively in the manufacture of automobile parts.

权利要求:
Claims (2)
[1" claim-type="Currently amended] In synthetic rubber parts,
1) 40 to 50 parts by weight of carbon black and 4 to 5 parts by weight of zinc oxide, based on 100 parts by weight of the styrene-butadiene rubber containing 23% by weight of natural rubber and styrene in a weight ratio of 80 to 90:20 to 10. , 1 to 2 parts by weight of activator, 1.2 to 1.5 parts by weight of heat aging inhibitor, 1.5 to 2.0 parts by weight of antioxidant, 1.5 to 2.0 parts by weight of ozone aging inhibitor, 3 to 4 parts by weight of sulfur, and 1.4 to 1.8 vulcanization accelerator 30 to 35 parts by weight of the rubber composition containing parts by weight; And
2) Synthetic rubber parts of rubber and plastic, characterized in that 10 to 15 parts by weight of modified polyphenylene ether.
[2" claim-type="Currently amended] In the manufacturing method of synthetic rubber parts,
1) injecting 10 to 15 parts by weight of the modified polyphenylene ether with respect to the inner pipe and injecting at a temperature of 175 to 180 ℃; And
2) 40 to 50 parts by weight of carbon black, 4 to 5 parts by weight of zinc oxide, and an activator in the styrene-butadiene rubber containing 23% by weight of natural rubber and styrene in the first step injection product 1 to 2 parts by weight, anti-aging agent 1.2 to 1.5 parts by weight, antioxidant 1.5 to 2.0 parts by weight, ozone antioxidant 1.5 to 2.0 parts by weight, sulfur 3 to 4 parts by weight and vulcanization accelerator 1.4 to 1.8 parts by weight 30 to 35 parts by weight of the rubber composition to the inner pipe is injected to the rubber injection at a temperature of 170 to 175 ℃ manufacturing method of synthetic rubber parts of rubber and plastic

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同族专利:

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引用文献:

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公开号 | 申请日 | 公开日 | 申请人 | 专利标题

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法律状态:
2001-07-11|Application filed by 현대자동차주식회사

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2001-07-11|Priority to KR1020010041531A

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2003-01-23|Publication of KR20030005995A

优先权:

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申请号 | 申请日 | 专利标题

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KR1020010041531A|KR20030005995A|2001-07-11|2001-07-11|Synthetic Rubber Parts and Manufacturing Technique of Rubber & Plastic|