• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:

    公开号:SU983129A1
    申请号:SU762351860
    申请日:1976-05-03
    公开日:1982-12-23
    发明作者:Бобке Дитер；Фаус Рюдигер；Кошек Роберт；Крелль Херберт；Майснер Дитер；Радуш Ханс-Йоахим
    申请人:Форшунгсинститут Фюр Шутехнологи (Инопредприятие)；
    IPC主号:
    专利说明:

    It is also necessary to introduce an auxiliary component similar in chemical properties to the waste. In addition, as a result of uncontrolled thermal decomposition, the properties of the resulting product are not reproduced.
    The purpose of the invention is to simplify the technology of waste processing and to obtain a thermoplastic product with high mechanical strength, i The goal is achieved when processing waste cross-linked polyurethanes by grinding them and heat treatment in an extruder with simultaneous removal of evolved gases and subsequent unloading of the product, heat treatment is performed in zones
    first zone 130-170 ° C,
    the second zone is 160-190 ° C, and the product is unloaded at 130170 ° C, and the exposure time in the first zone refers to the exposure time in the second zone 3: 1 - 1: .1 with a total duration of the heat treatment process of 2-9 minutes.
    Polyvinyl chloride in the form of a powder, plasticized granulate and agglomerate or thermoplastic rubber and / or / or ethylene copolymer with vinyl acetate can be pre-introduced into the initial waste of cross-linked polyurethanes.
    In addition, a blowing agent, a dye or filler such as chalk, fiberglass, kaolin, rubber flour, as well as plasticizers can be introduced into the waste of cross-linked polyurethane.
    Recycled polyurethane waste and the resulting compounds are optimal and well-varying systems of materials that, compared to other thermoplastics or conventional thermoplastic rubber mixtures, have equivalent mechanical and physical properties, sometimes even surpass them and are used in the manufacture of profiled parts for molding and molding parts, especially molded soles, as well as for direct injection under pressure of the bottom of all types of shoes.
    Example 1. Polyurethane waste integral foam is mechanically crushed using a knife granulator and thermally decomposed in a twin-screw extruder with .ISO-iyd C. A head granulation method is used to make granules from which the soles are made on an injection molding machine. Soles have physical properties:
    Voluminous
    density, g / m 1.25
    Strength at
    stretching by
    TGL 1436680
    Relative
    elongation at break by
    THL 14366,% 550
    Tensile strength
    in according to TGLO-53507, kg / cm 34
    Swelling at a load of 1 kg according to TGL 24924,
    .
    Hardness
    SHORU-A by
    THL 14365, O .84
    5 This example differs from the following by the absence of a multi-step temperature regime during the course of the reaction. At the same time receive high hardness on Shor-A - 84 °. QG (Examples 2-16. By a known method, 250 kg of clean, thermally non-recyclable waste is crushed. The total holding time in an extruder is 5 minutes. The holding time g in the first heating zone is twice as long as the second one. After the end of the process, granulation of the final product and making soles on injection molding machines. The results presented below are average data of 10 measurements, with individual deviations reaching no more than 8%.
    The temperatures in the extruder ° C are given in table. one.
    5 The results of testing the physicomechanical properties are given in Table 2.
    Examples 17-28. Varied times are used. . The temperature in the first heating zone 0 130C, in the second 180 ° C and in the third. The remaining conditions are in accordance with the conditions adopted in examples 2-16.
    The conditions of the experiments and the results of tests of physicomechanical properties are given in Table. 3
    Examples 29-58. A wide variety of additives and combinations of additives are added to the polyurethane waste.
    In this case, the total weight of 250 kg; the temperature in the first heating zone is 130 ° C, in the second - 180 ° C, in the third - 130 ° C; total exposure time in the extruder 5 min. The exposure time in the first heating zone is twice as long as in the second zone.
    The raw materials are crushed according to known methods, the additives in the third heating zone are measured, 10 samples are measured and the average is determined, and the deviations of the individual measurements should not exceed 10%.
    The data obtained are presented in Table 5. four.
    Consequently, when the temperature range is met, but they refuse to use two controlled thermal zones with certain time-extracts, the final product has too much hardness, according to Shore-A, unfavorable for the production of soles.
    By applying a temperature regime and following these holding times, a product is obtained that is well applicable in the shoe industry, respectively, to Examples 2-58.
    Example 59. A larger total amount of starting material (500 kg) is used.
    For compounding thermoplastic rubber with polyurethane waste, 80 parts of thermoplastic compound rubber are mixed in a suitable mixer with 20 parts of polyurethane waste granulate and 0, azodicarbonamide. This mixture is loaded into a special-mix mixing extruder, for example, a KO-mixer, in which the polyurethane waste is compounded with a simultaneous removal of evolved volatile products. Compounding Process Operating Parameters
    Temperature .
    KO auger, C130
    Temperature
    housing, S180
    Temperature
    unloading
    devices, ° С160
    The number of revolutions of the KO screw,
      I 44
    Unloading speed
    Auger screw
    devices, 65
    The result is a compound having the following physical and mechanical properties:
    Strength at
    stretching by
    THL 14366, .cgs / cm 28-38
    Relative
    elongation at
    gap along
    THL 14-366,% 300-450
    Resistance
    anguish over
    THL 0-53507, kgf 5.0-10.0
    O. volume density, g / cm 0.75-0.85
    Abrasion at
    load 1 kg
    on TGL 24924, mm 18 (: 240
    Shore A hardness
    on TGL 14365, ° 60-65
    Flexural strength
    in the cold state of 100,000 bends.
    NII at -20 C
    This compound is suitable as a substitute material, for example, for the manufacture of shoe soles. It can be used in the production of sports and casual shoes. Example 60. 500 kg of starting material is used.
    For compounding polyvinyl chloride with polyurethane waste, it is mixed for 90 hours, plasticized polyvinyl chloride agglomerate with 10 hours, granules of polyurethane waste in a mixer, and the mass is alternately heated and cooled in the process of mixing. The resulting mixture is loaded into a twin screw extruder, in which the compounding is carried out with simultaneous release of volatile products during decomposition.
    The napaNffiTpH compounding workers:
    Temperature
    first zone
    heating, ° С130
    Second zone temperature
    heating, ° С130
    Temperature
    third zone
    heating, ° С130
    Temperature
    fourth
    heating zone, € 160.
    Temperature
    nth zone
    heating, ° С165
    Temperature
    unloading
    130
    devices, ° C
    Temperature
    nozzles, 130 ° C
    Speed
    Screws, min 30
    The result is a compound having the following physical and mechanical properties:
    Tensile strength
    when stretched
    on TGL 14366,
    kgf / cm 45-65
    Elongation at
    gap along
    THL 14366;% 300-500
    Strength
    to break on THL 0-53507,
    kgf / cm15-22
    Voluminous
    lot size, g / cm 1.15-12 Abrasion with a load of 1 kg
    on TGL 24924,
    mm 200-250
    Hardness
    Shore TGL 14365,70-75
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    权利要求:
    Claims (2)
    [1]
    Claim 1 Investigation method for waste of cross-linked polyurethanes by grinding them and heat treatment in an extruder with simultaneous removal of evolved gases and subsequent unloading of the product, characterized in that, in order to simplify the processing technology, heat treatment is carried out in zones °:, the second zone is 160-190C, and the product is unloaded at 130170 s, with the dwell time in the first zone referring to the dwell time in the second zone as 3: 1-1: 1 with a total duration of the heat treatment process of 2-9 min. 2. The method according to claim 1, characterized by the fact that the initial waste of crosslinked polyurethane is pre-mixed with polyvinyl chloride in the form of a powder, plasticized granulate and agglomerate. 3. The method according to claim 1, wherein the initial waste of the crosslinked polyurethane is mixed with thermoplastic rubber and / or ethylene copolymer with vinyl acetate. 4. The method according to claim 1, characterized in that the initial waste Blends of cross-linked polyurethanes are mixed with a blowing agent, 5. A method according to claim 1, wherein the source waste of the cross-linked polyurethanes is mixed with a dye. 6. The method according to claim 1, starting with the fact that the initial waste of the crosslinked polyurethanes is mixed with chalk or fiberglass, or koalin, or rubber flour and / or plasticizer. The priority on puiktam 05.05.75 is in accordance with claim 1, with the exception of the characteristic relating to the exposure time in the zones according to WP-C08g / 185826; 08.08.75 - on PP. 2-: b according to WP C08d / 187929} 02.18.81 - according to claim 1 for a sign on the holding time in zones according to additional materials. Sources of information taken into account in the examination 1. GDR patent 112228, KJi. 39 a 25/00, published in 1975.
    [2]
    2. Patent of the GDR 108106, cl. 39 a 25/00, published 1974. 3 Published for the Federal Republic of Germany No. 1753702, cl. 39 a 1/12, published. 1971.
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    同族专利:
    公开号 | 公开日
    FR2310383A1|1976-12-03|
    DE2615840A1|1976-11-18|
    HU176966B|1981-06-28|
    FR2310383B1|1981-09-25|
    GB1551274A|1979-08-30|
    CS208368B1|1981-09-15|
    引用文献:
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    DE4309139A1|1993-03-22|1994-09-29|Bayer Ag|Process for the production of powders and other small and ultra small particles|
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    DE959409C|1955-06-26|1957-03-07|Continental Gummi Werke Ag|Process for the production of molded bodies from a thermoplastic, polyurethane-containing plastic compound|
    DE1089153B|1957-02-15|1960-09-15|Pleiger Maschf Paul|Process for the preparation of elastic, crosslinked plastics based on polyester isocyanate for reuse|DE3844664C2|1987-10-17|1991-04-25|Hofmann, Simone, 7030 Boeblingen, De|Articles, esp. panels, prepd. from hard polyurethane foam|
    DE4102999A1|1991-02-01|1992-08-13|Bayer Ag|METHOD FOR THE PRODUCTION OF THERMOPLASTICALLY PROCESSABLE PLASTIC MIXTURES AND THE USE THEREOF FOR THE PRODUCTION OF MOLDED BODIES|
    AT179649T|1993-01-18|1999-05-15|Microlite Sl|METHOD FOR RECOVERY OF POLYURETHANE|
    CN1043863C|1994-02-05|1999-06-30|车国承|Method for producing paint film-water resistant polyurethane rubber sheet from polyurethane foam|
    CZ303835B6|2008-12-11|2013-05-22|Vysoké ucení technické v Brne|Process for preparing thermally degradable polyurethane foams|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD18582675A|DD119054A1|1975-05-05|1975-05-05|
    DD18792975A|DD125889A2|1975-08-19|1975-08-19|
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