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New composite material of polyvinyl chloride and nitrile butadiene rubber

A technology of nitrile rubber and polyvinyl chloride, which is applied in the field of polymer material modification, can solve problems such as poor low temperature resistance, poor insulation performance, and poor ozone resistance, so as to improve chemical resistance and oil resistance, and change low temperature resistance properties, effects of changing susceptibility to aging

Inactive Publication Date: 2018-03-30
江苏瑞斯达安全防护用品有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, PVC materials have disadvantages such as poor toughness and poor heat resistance, which restrict their development in areas with high performance requirements.
[0003] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. , its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity
[0004] Due to the large difference in molecular structure between polyvinyl chloride and nitrile rubber, the melting medium of polyvinyl chloride is a plasticizer, which belongs to an oily dispersion, while the synthetic nitrile latex of nitrile rubber is an aqueous medium, and the two are difficult to be compatible and compounded. At the same time, the plasticizing temperature of polyvinyl chloride is different from that of nitrile rubber, so it is difficult to achieve the same plasticizing effect

Method used

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  • New composite material of polyvinyl chloride and nitrile butadiene rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A new composite material of polyvinyl chloride and nitrile rubber. After the modification process of nitrile rubber and the composite process of polyvinyl chloride and nitrile rubber, the preparation of the new composite material of polyvinyl chloride and nitrile rubber is completed. Specifically Proceed as follows:

[0020] (1) Modification process of nitrile rubber: mix nitrile rubber with flexible plasticizer, the flexible plasticizer is citric acid plasticizer and polyester plasticizer, nitrile rubber, citric acid plasticizer and The mixing mass ratio of the polyester plasticizer is 2:1:1, heated to 45 degrees centigrade with water isolation, then high-speed stirring, the high-speed stirring speed is 800r / min, and the stirring time is 1 hour, after stirring evenly, let it stand for 22 hours, A modified nitrile rubber is obtained.

[0021] (2) Composite process of polyvinyl chloride and nitrile rubber: mix modified nitrile rubber, flexible plasticizer, stabilizer, r...

Embodiment 2

[0023] A new composite material of polyvinyl chloride and nitrile rubber. After the modification process of nitrile rubber and the composite process of polyvinyl chloride and nitrile rubber, the preparation of the new composite material of polyvinyl chloride and nitrile rubber is completed. Specifically Proceed as follows:

[0024] (1) Modification process of nitrile rubber: mix nitrile rubber with flexible plasticizer, the flexible plasticizer is citric acid plasticizer and polyester plasticizer, nitrile rubber, citric acid plasticizer and The mixing mass ratio of the polyester plasticizer is 2:1:1, heated to 55 degrees centigrade in water isolation, then high-speed stirring, the high-speed stirring speed is 1000r / min, and the stirring time is 1.5 hours, and it is left to stand for 26 hours after stirring evenly. A modified nitrile rubber is obtained.

[0025] (2) Composite process of polyvinyl chloride and nitrile rubber: mix modified nitrile rubber, flexible plasticizer, s...

Embodiment 3

[0027] A new composite material of polyvinyl chloride and nitrile rubber. After the modification process of nitrile rubber and the composite process of polyvinyl chloride and nitrile rubber, the preparation of the new composite material of polyvinyl chloride and nitrile rubber is completed. Specifically Proceed as follows:

[0028] (1) Modification process of nitrile rubber: mix nitrile rubber with flexible plasticizer, the flexible plasticizer is citric acid plasticizer and polyester plasticizer, nitrile rubber, citric acid plasticizer and The mixing mass ratio of the polyester plasticizer is 2:1:1, heated to 50 degrees Celsius in water, then high-speed stirring, the high-speed stirring speed is 900r / min, and the stirring time is 1.2 hours. After stirring evenly, let it stand for 24 hours. A modified nitrile rubber is obtained.

[0029] (2) Composite process of polyvinyl chloride and nitrile rubber: mix modified nitrile rubber, flexible plasticizer, stabilizer, rheological a...

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Abstract

The invention discloses a new composite material of polyvinyl chloride and nitrile butadiene rubber. Through the modification process of nitrile butadiene rubber and the compounding process of polyvinyl chloride and nitrile butadiene, preparation of the new composite material of polyvinyl chloride and nitrile butadiene rubber is completed. According to the invention, the macromolecular structure of nitrile butadiene rubber is modified to transform into a low molecular reactive flexible plasticizer so as to partially replace the traditional polyvinyl chloride plasticizer DOP and DINP and be well compatible with polyvinyl chloride, thus forming the new composite material. The new composite material changes the softness and resilience of polyvinyl chloride, improves the chemical resistance and oil resistance, also changes the easy aging properties of nitrile butadiene rubber, can avoid vulcanization, shortens the processing time and changes the low temperature resistance of nitrile butadiene rubber.

Description

technical field [0001] The invention relates to a modification technology of a polymer material, in particular to a new composite material of polyvinyl chloride and nitrile rubber. Background technique [0002] Polyvinyl chloride (PVC) has a wide range of raw materials, low product cost, light weight, convenient construction and maintenance, and is the second most common plastic. However, PVC materials have disadvantages such as poor toughness and poor heat resistance, which restrict their development in fields with high performance requirements. [0003] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. , its disadvantages are poor low temperature resistance, poor ozone resistance, poor insulation performance, and slightly lower elasticity. [0004] Due to the larg...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/02C08L27/06C08L67/00C08K5/092
CPCC08L9/02C08L27/06C08L2201/04C08L2205/03C08L67/00C08K5/092
Inventor 裘耀明
Owner 江苏瑞斯达安全防护用品有限公司
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