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High-stability rubber pipe resistant to water-absorption aging for automobiles and preparation process of rubber pipe

A high-stability, aging rubber technology, applied in the field of automotive rubber pipes, can solve problems such as affecting performance and rubber cracking

Inactive Publication Date: 2019-07-19
安徽都邦电器有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] With the rapid development of my country's automobile industry, the voice of lightweight and environmental protection in the automobile industry is increasing. At present, most of the fuel tank drain pipes used in automobiles are made of ethylene propylene rubber. Cracks affect performance

Method used

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  • High-stability rubber pipe resistant to water-absorption aging for automobiles and preparation process of rubber pipe

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] A kind of preparation process of high-stability and difficult-to-absorb aging rubber tube for automobile, comprising the following steps:

[0020] S1. Put 20 parts of polytetrahydrofuran diol, 2 parts of cyclopolypropylene oxide ether triol, and 0.5 part of polyvinyl alcohol into the reaction kettle by weight, heat to 90°C under vacuum and stirring, and cool down to Add 2 parts of toluene diisocyanate and 3 parts of 1,5-naphthalene diisocyanate at 40°C, stir at 85°C for 40 minutes, let stand for 20 hours, and dehydrate to obtain prefabricated polyurethane;

[0021] S2. Add 12 parts of acrylonitrile-butadiene-styrene and 1 part of chain extender di-o-chlorodiphenylamine methane to the prefabricated polyurethane, heat and melt and stir evenly to obtain a premix;

[0022] S3. Send the premixed material into the twin-screw extruder for extrusion. The temperature of each stage of the extruder is as follows: the temperature of the first zone of the barrel is 170°C, the temper...

Embodiment 2

[0024] A kind of preparation process of high-stability and difficult-to-absorb aging rubber tube for automobile, comprising the following steps:

[0025] S1. Put 10 parts of polytetrahydrofuran diol, 6 parts of cyclopolypropylene oxide ether triol, and 0.1 part of polyvinyl alcohol into the reaction kettle by weight, heat to 100°C under vacuum and stirring, and cool down to 100°C after dehydration. Add 6 parts of toluene diisocyanate and 1 part of 1,5-naphthalene diisocyanate at 30°C, stir at 92°C for 20 minutes, let stand for 40 hours, and dehydrate to obtain prefabricated polyurethane;

[0026] S2. Add 4 parts of acrylonitrile-butadiene-styrene and 3 parts of chain extender di-o-chlorodiphenylamine methane to the prefabricated polyurethane, heat and melt and stir evenly to obtain a premix;

[0027] S3. Send the premixed material into the twin-screw extruder for extrusion. The temperature of each stage of the extruder is as follows: the temperature of the first zone of the ba...

Embodiment 3

[0029] A kind of preparation process of high-stability and difficult-to-absorb aging rubber tube for automobile, comprising the following steps:

[0030] S1. Put 18 parts of polytetrahydrofuran diol, 3 parts of cyclopolypropylene oxide ether triol, and 0.4 part of polyvinyl alcohol into the reaction kettle by weight, heat to 92°C under vacuum and stirring, and cool down to Add 3 parts of toluene diisocyanate and 2.5 parts of 1,5-naphthalene diisocyanate at 37°C, stir at 86°C for 32 minutes, let stand for 22 hours, and dehydrate to obtain prefabricated polyurethane;

[0031] S2. Add 10 parts of acrylonitrile-butadiene-styrene and 1.5 parts of chain extender di-o-chlorodiphenylamine methane to the prefabricated polyurethane, heat and melt and stir evenly to obtain a premix;

[0032] S3. Send the premixed material into the twin-screw extruder for extrusion. The temperature of each stage of the extruder is as follows: the temperature of the first zone of the barrel is 168°C, the t...

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Abstract

The invention discloses a preparation process of a high-stability rubber pipe resistant to water-absorption aging for automobiles. The preparation process comprises the following steps: feeding polytetrahydrofuran glycol, polyoxypropylene ether trihydric alcohol and polyvinyl alcohol into a reaction kettle, conducting heating to 90-100 DEG C in a vacuum and stirring state, conducting dehydrating,conducting cooling to 30-40 DEG C, adding toluene diisocynate and 1,5-naphthalene diisocynate, conducting stirring at 80-95 DEG C, and conducting standing and dehydrating to obtain prefabricated polyurethane; adding acrylonitrile-butadiene-styrene and a chain extender into the prefabricated polyurethane, conducting heating for melting, and conducting uniform stirring to obtain a premix; and feeding the premix into a double-screw extruder for extruding, and then feeding the extruded material into an injection mold for molding to obtain the high-stability rubber pipe resistant to water-absorption aging for automobiles. The preparation process is simple, and the product is not prone to water absorption aging, good in stability and convenient to popularize and apply on a large scale.

Description

technical field [0001] The invention relates to the technical field of rubber hoses for automobiles, in particular to a rubber hose with high stability and resistance to water absorption and aging for automobiles and a preparation process thereof. Background technique [0002] The fuel tank drain pipe is composed of two parts: the internal hose structure of the body and the drain joint structure exposed to the atmosphere. The performance requirements of the hose inside the body are excellent water resistance, weather resistance, oil resistance, acid and alkali resistance; the performance requirements of the connector material outside the body are excellent wear resistance, weather resistance, impact resistance, oil resistance, acid resistance Alkaline, water resistant. [0003] With the rapid development of my country's automobile industry, the voice of lightweight and environmental protection in the automobile industry is increasing. At present, most of the fuel tank drain...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L75/08C08L55/02C08G18/76C08G18/66C08G18/48C08G18/62C08G18/38
CPCC08G18/3814C08G18/4812C08G18/4854C08G18/6212C08G18/6685C08G18/721C08G18/7614C08G18/7678C08L75/08C08L2203/18C08L55/02
Inventor 聂锐
Owner 安徽都邦电器有限公司
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