Coordination modifier-containing rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber

A modifier and composition technology, applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., can solve the problems that can not fully meet the high strength of tire sidewall rubber, large lignin aggregate size, unsatisfactory reinforcement effect, etc. , to achieve good dynamic flexibility, high strength, and improve the effect of strength

Active Publication Date: 2020-10-13
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] However, in the above-mentioned prior art, lignin and its derivatives or carbon black are used to fill the rubber matrix, and the surface properties are quite different from the non-polar rubber matrix, so that the interaction between the two is weakened, and the strong hydrogen bonding between lignin makes The size of lignin aggregates is large, the processing performance is deteriorated, and the final reinforcement effect is not ideal
[0008] Therefore, the above-mentioned prior art cannot fully satisfy the high strength, low rolling resistance, and good dynamic flexibility required by the tire sidewall rubber containing the lignin formula, and it is necessary to provide a rubber composition with improved properties

Method used

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  • Coordination modifier-containing rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber
  • Coordination modifier-containing rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber
  • Coordination modifier-containing rubber composition, vulcanized rubber, and preparation method and application of vulcanized rubber

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preparation example Construction

[0050] The following provides some preferred specific embodiments for the method for preparing vulcanized rubber provided by the present invention.

[0051] In the rubber matrix, relative to 100 parts by weight of the rubber matrix, the content of the natural rubber is preferably 35-65 parts by weight, and the content of the butadiene rubber is preferably 35-65 parts by weight.

[0052] Preferably, the rubber matrix is ​​a mixture of butadiene rubber and natural rubber.

[0053] Preferably the natural rubber is SMR-20.

[0054] Preferably, the cis structure content in the butadiene rubber is 95-99% by weight.

[0055] According to a preferred embodiment, with respect to 100 parts by weight of the rubber matrix, the amount of the rubber modifier is 3-15 parts by weight, the amount of lignin is 20-50 parts by weight, the The amount of the coordination modifier is 1-7 parts by weight, the amount of the carbon black is 0-50 parts by weight, the amount of the activator is 5-10 pa...

Embodiment 1

[0094] Rubber composition formula: 35 parts by weight of natural rubber, 65 parts by weight of butadiene rubber, 3 parts by weight of mercapto polyethylene glycol dopamine (rubber modifier), 20 parts by weight of lignin, ZnCl 2 (Coordination modifier) ​​1 part by weight, carbon black N550 20 parts by weight, carbon black N330 30 parts by weight, TDAE (softener) 3 parts by weight, zinc oxide (activator) 4 parts by weight, stearic acid (activator ) 1 part by weight, 0.5 parts by weight of sulfur (vulcanizing agent), 5 parts by weight of TBBS (accelerator), 2 parts by weight of antioxidant 4020 (antiaging agent).

[0095] Preparation process of vulcanized rubber:

[0096] (1) Perform the first mixing of the rubber matrix and the rubber modifier to obtain a section of masterbatch; specifically, add natural rubber and butadiene rubber into the internal mixer, set the rotation speed to 77rpm, and the initial mixing temperature to 70°C , the raw rubber masticating time is 0.3min; th...

Embodiment 2

[0103] Rubber composition formula: 65 parts by weight of natural rubber, 35 parts by weight of butadiene rubber, 15 parts by weight of mercapto polyethylene glycol dopamine (rubber modifier), 50 parts by weight of lignin, RuCl 3 (coordination modifier) ​​7 parts by weight, carbon black N550 30 parts by weight, TDAE (softener) 10 parts by weight, zinc oxide (activator) 4 parts by weight, stearic acid (activator) 3 parts by weight, sulfur ( vulcanizing agent) 4 parts by weight, accelerator D (accelerator) 1 weight part, anti-aging agent 4020 (anti-aging agent) 0.5 parts by weight.

[0104] Preparation process of vulcanized rubber:

[0105] (1) Perform the first mixing of the rubber matrix and the rubber modifier to obtain a section of masterbatch; specifically, add natural rubber and butadiene rubber into the internal mixer, set the rotation speed to 77rpm, and the initial mixing temperature to 70°C , the plasticizing time of the raw rubber is 1 min; add the interface modifier ...

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Abstract

The invention relates to the field of rubber, and discloses a coordination modifier-containing rubber composition, vulcanized rubber, a preparation method and applications thereof, wherein the rubbercomposition contains a rubber matrix, a rubber modifier, lignin, a coordination modifier, an activator, an anti-aging agent, a softener, a vulcanizing agent and an accelerator, and optionally containscarbon black; wherein the rubber modifier is a sulfydryl polyethylene glycol derivative containing a metal ligand structure, the coordination modifier is a metal salt, and the rubber matrix containsbutadiene rubber and natural rubber. The rubber composition has the advantages of high strength, low rolling resistance and good dynamic flexibility, and vulcanized rubber formed by the composition can be used for tire sidewalls.

Description

technical field [0001] The invention relates to the field of rubber, in particular to a rubber composition containing a coordination modifier, a method for preparing vulcanized rubber, the vulcanized rubber prepared by the method and the application of the vulcanized rubber in tire sidewalls. Background technique [0002] In recent years, in order to adapt to the development trend of automobile tire safety, light weight, environmental protection, and greenness, coupled with people's attention to carbon black, the first reinforcing filler, which is relatively expensive and some have potential carcinogenic effects, lignin and its Derivatives are more and more valued in the field of tires because they can improve the mechanical strength of rubber, reduce hysteresis loss, reduce tire rolling resistance, and save vehicle fuel consumption. [0003] At the same time, the application of lignin as a natural polymer with high surface activity in the rubber industry has the advantages ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08L7/00C08L97/00C08L71/02C08K13/02C08K3/16C08K3/04C08K3/22C08K5/09C08K3/06B29B7/00
CPCC08L9/00C08L7/00B29B7/005C08L2205/035C08K2201/014C08K2003/2296C08K2003/168C08L97/005C08L71/02C08K13/02C08K3/16C08K3/04C08K3/22C08K5/09C08K3/06Y02T10/86
Inventor 孙攀解希铭唐功庆王丽静赵青松
Owner CHINA PETROLEUM & CHEM CORP
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