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Chlorinated butadiene rubber material, and preparation method and application thereof

A technology of chlorinated butadiene and rubber materials, which can be used in transportation and packaging, vehicle parts, tire parts, etc., and can solve the problems of low tear strength, poor wet skid resistance, and poor high temperature resistance. Achieve comprehensive performance improvement, easy control, good flex resistance and resilience

Pending Publication Date: 2022-02-15
瑞易德新材料股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, it also has certain defects, such as low tear strength, poor wet skid resistance, and poor high temperature resistance.
[0003] At present, butadiene rubber is generally used together with other rubber types as tire tread rubber, but due to its lack of performance, its usage has been relatively low. For example, it is used in combination with styrene-butadiene rubber to manufacture passenger car tires, and the usage is 35%. -50%; when used together with natural rubber to manufacture truck tire treads, the usage is 25%-50%, and the cost is higher

Method used

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  • Chlorinated butadiene rubber material, and preparation method and application thereof
  • Chlorinated butadiene rubber material, and preparation method and application thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0033] A preparation method of chlorinated butadiene rubber material, comprising the following specific steps (raw materials are in parts by weight):

[0034] S1. Add 100 parts of 1,3-butadiene, 200 parts of n-hexane and 0.8 parts of diethylene glycol dialkyl ether into the polymerization reactor, and under the protection of nitrogen, the temperature in the polymerization reactor is raised to 60 ℃, then add 1.5 parts of initiator A, control the pressure to 0.85MPa, and polymerize at this temperature for 1 hour to obtain a primary polymerization reaction mixture;

[0035] S2. Add the primary polymerization reaction mixture in S1 to another polymerization reactor, raise the temperature to 60°C under the protection of nitrogen, add 2 parts of initiator B, control the pressure to 0.85MPa, and perform secondary polymerization at this temperature Reaction 2h, obtain secondary polymerization reaction mixture;

[0036] S3. Add 2 parts of KH-570 to the secondary polymerization reactio...

Embodiment 2

[0040] A preparation method of chlorinated butadiene rubber material, comprising the following specific steps (raw materials are in parts by weight):

[0041]S1. 100 parts of 1,3-butadiene, 300 parts of cyclohexane and 1.2 parts of ethylene glycol dialkyl ether are added to the polymerization reactor, and under the protection of nitrogen, the temperature in the polymerization reactor is raised to 70°C, then add 1 part of initiator A, control the pressure to 0.7MPa, and polymerize at this temperature for 1.5h to obtain a primary polymerization reaction mixture;

[0042] S2. Add the primary polymerization reaction mixture in S1 to another polymerization reactor, raise the temperature to 70°C under the protection of nitrogen, add 1.5 parts of initiator B, control the pressure to 0.7MPa, and perform secondary polymerization at this temperature React for 2.5h to obtain the secondary polymerization reaction mixture;

[0043] S3. Add 3 parts of tetrachlorosilane to the secondary pol...

Embodiment 3

[0047] A preparation method of chlorinated butadiene rubber material, comprising the following specific steps (raw materials are in parts by weight):

[0048] S1. Add 100 parts of 1,3-butadiene, 400 parts of benzene and 2 parts of ethylene glycol dialkyl ether into the polymerization reactor, and raise the temperature inside the polymerization reactor to 80°C under the protection of nitrogen , then add 0.5 parts of initiator A, control the pressure to 0.65MPa, and polymerize at this temperature for 2 hours to obtain a primary polymerization mixture;

[0049] S2. Add the primary polymerization mixture in S1 to another polymerization reactor, raise the temperature to 80°C under the protection of nitrogen, add 1 part of initiator B, control the pressure to 0.65MPa, and perform secondary polymerization at this temperature React for 3h to obtain the secondary polymerization reaction mixture;

[0050] S3. Add 5 parts of KH-550 to the secondary polymerization reaction mixture of S2,...

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Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to a chlorinated butadiene rubber material, and a preparation method and application thereof. The chlorinated butadiene rubber material is prepared by a substitution reaction of butadiene rubber with chlorine, wherein the butadiene rubber contains 38%-46% of cis-1,4 butadiene rubber. The chlorine content of the chlorinated butadiene rubber material is 20-35%. The preparation method of the chlorinated butadiene rubber material is simple to operate and easy to control, the comprehensive performance of the finally obtained chlorinated butadiene rubber material is improved, and the chlorinated butadiene rubber material can be used for manufacturing truck tire treads and is large in usage amount and low in cost.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and in particular relates to a chlorinated butadiene rubber material, a preparation method and an application. Background technique [0002] Butadiene rubber is currently the second largest rubber species in the world after styrene-butadiene rubber. The difference in the microstructure of butadiene rubber mainly depends on the catalyst, polymerization solvent and polymerization reaction temperature. Butadiene rubber mainly has two structures: cis-1,4-butadiene rubber and trans-1,4-butadiene rubber. type. At present, the butadiene rubber variety with the largest output and widest application in the world is cis-1,4-butadiene rubber, and cis-1,4-butadiene rubber mainly has excellent wear resistance and flex resistance. Good, high resilience, small hysteresis loss, low heat generation, good low temperature performance and so on. But it also has certain defects, such as low tear strength...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08C19/14C08F136/06C08F4/48C08F4/26C08F4/16C08F2/38C08L15/02C08L7/00B60C1/00
CPCC08C19/14C08F136/06C08L15/02B60C1/0016C08F4/482C08F4/26C08F4/16C08F2/38C08L7/00
Inventor 罗圣君罗睿轶顾宝良徐晶
Owner 瑞易德新材料股份有限公司
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