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A kind of rubber composition and a kind of vulcanized rubber and its preparation method and application

A rubber composition and the technology of the composition are applied in the directions of transportation and packaging, optimization of rolling resistance, special tires, etc., and can solve the problem that the high strength of tire sidewall rubber, the large size of lignin aggregates and the unsatisfactory reinforcement effect cannot be fully satisfied. and other problems, to achieve the effect of good dynamic flexibility, high strength and particle size reduction

Active Publication Date: 2022-07-12
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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  • A kind of rubber composition and a kind of vulcanized rubber and its preparation method and application
  • A kind of rubber composition and a kind of vulcanized rubber and its preparation method and application
  • A kind of rubber composition and a kind of vulcanized rubber and its preparation method and application

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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] Preferably, the polymer containing maleic anhydride structural unit and diene structural unit is selected from at least one of maleic anhydride-grafted polybutadiene polymer and maleic anhydride-grafted polyisoprene polymer.

[0052] In the rubber matrix, relative to 100 parts by weight of the rubber matrix, preferably the content of the natural rubber is 35-65 parts by weight, and preferably the content of the butadiene rubber is 35-65 parts by weight.

[0053] Preferably the rubber matrix is ​​a mixture of butadiene rubber and natural rubber.

[0054] Preferably the natural rubber is SMR-20.

[0055] Preferably, the cis-structure content in the cis-butadiene rubber is 95-99% by weight.

[0056] According to a preferred embodiment, with respect to 100 parts by weight of the rubber matrix, the amount of the interface mod...

Embodiment 1

[0096] Rubber composition formula: 35 parts by weight of natural rubber, 65 parts by weight of butadiene rubber, 3 parts by weight of maleic anhydride grafted polybutadiene (interface modifier), 20 parts by weight of lignin, polyethylene glycol (plasticized dispersant) 2 parts 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), and 2 parts by weight of anti-aging agent 4020 (anti-aging agent).

[0097] Preparation process of vulcanized rubber:

[0098] (1) The first mixing of the rubber matrix and the interface modifier is carried out to obtain a master batch; specifically, natural rubber and cis-butadiene rubber are added to the internal mixer, and the setting speed is 77 rpm, and the initial mixing temperature is 70 ° C , the raw ...

Embodiment 2

[0105] Rubber composition formula: 65 parts by weight of natural rubber, 35 parts by weight of cis-butadiene rubber, 15 parts by weight of maleic anhydride grafted polybutadiene (interface modifier), 50 parts by weight of lignin, PEO-PPO-PEO block 8 parts by weight of copolymer (plasticizing dispersant), 30 parts by weight of carbon black N550, 10 parts by weight of TDAE (softening agent), 4 parts by weight of zinc oxide (activator), 3 parts by weight of stearic acid (activator), sulfur (vulcanizing agent) 4 weight part, accelerator D (accelerator) 1 weight part, antioxidant 4020 (anti-aging agent) 0.5 weight part.

[0106] Preparation process of vulcanized rubber:

[0107] (1) The first mixing of the rubber matrix and the interface modifier is carried out to obtain a master batch; specifically, natural rubber and cis-butadiene rubber are added to the internal mixer, and the setting speed is 77 rpm, and the initial mixing temperature is 70 ° C , the raw rubber mastication tim...

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Abstract

The invention relates to the field of rubber, and discloses a rubber composition, a vulcanized rubber and a preparation method and application thereof. , softening agent, vulcanizing agent and accelerator, and optionally containing carbon black; wherein, the interface modifier is a polymer containing maleic anhydride grafted diene structural units, and the rubber matrix contains cis-butadiene rubber and natural rubber mixture. The rubber composition of the present invention has the advantages of high strength, low rolling resistance, good dynamic flexural flexibility, and the vulcanized rubber formed from the composition can be used for vehicle tire sidewalls.

Description

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

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/00C08L7/00C08L51/00C08L97/00C08L71/02C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06B60C1/00B29B7/00
CPCC08L9/00C08L7/00B60C1/0016B60C1/0025B29B7/005C08K2201/014C08K2003/2296C08L51/003C08L97/005C08L71/02C08K13/02C08K3/04C08K3/22C08K5/09C08K3/06C08K5/18Y02T10/86
Inventor 孙攀解希铭李静赵青松唐功庆
Owner CHINA PETROLEUM & CHEM CORP
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