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A modified rubber masterbatch and its preparation method and a polybutadiene rubber composition and its preparation method and its vulcanizate

A technology of polybutadiene rubber and modified rubber, which is applied in the direction of rolling resistance optimization, road transportation emission reduction, etc., and can solve problems such as no reports

Active Publication Date: 2015-11-25
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

And although the particle size of the rubber gel is reported in these patents, when these rubber gels are dispersed in the vulcanized rubber, can they also achieve the dispersion of the primary particle size, and can they really bring into play the properties of the nanoscale rubber gel? Modification, not reported in any patent

Method used

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  • A modified rubber masterbatch and its preparation method and a polybutadiene rubber composition and its preparation method and its vulcanizate
  • A modified rubber masterbatch and its preparation method and a polybutadiene rubber composition and its preparation method and its vulcanizate

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Effect test

Embodiment 1~2

[0097] 1. Preparation of modified rubber masterbatch:

[0098] (1) Preparation of radiation crosslinked nitrile rubber latex:

[0099] In the nitrile rubber latex (nitrile-26) with a solid content of 45%wt, after adding the crosslinking aid trimethylolpropane triacrylate according to 3%wt of the solid content of the nitrile latex, carry out irradiation crosslinking , the radiation dose is 3.0Mrad, and the radiation crosslinked nitrile rubber latex is obtained. The average particle diameter of the radiation crosslinked nitrile rubber particles in the latex is 100nm, and the gel content is 91%.

[0100] (2) Latex mixing and coagulation:

[0101] Add the nitrile rubber latex after radiation crosslinking to the uncrosslinked emulsion polystyrene butadiene rubber latex SBR1502 according to a certain solid content ratio, wherein the solid content of the nitrile rubber latex after radiation crosslinking is the same as that of the uncrosslinked The weight ratio of solid content of p...

Embodiment 2

[0105] Only the weight ratio of the modified rubber masterbatch and polybutadiene rubber BR9000 was changed to 11.25:88.75, the others were the same as in Example 1, and the compounding formula composition of the specific rubber composition was listed in Table 2. The properties of the vulcanizate are shown in Table 3.

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Abstract

The invention provides a modified rubber masterbatch and its preparation method, a polybutadiene rubber composition and its preparation method and its vulcanized rubber. The modified rubber masterbatch includes uncrosslinked rubber and nitrile rubber particles with a cross-linked structure dispersed therein; the nitrile rubber particles have an average particle size of 50 to 200 nm and a gel content of 60% by weight or Higher; the uncrosslinked rubber is styrene-butadiene rubber; the weight ratio of the crosslinked nitrile rubber particles to the uncrosslinked rubber is greater than 20:80 and less than or equal to 80:20. The polybutadiene rubber composition includes the blended modified rubber masterbatch and polybutadiene rubber; based on 100 parts by weight of polybutadiene rubber, the modified rubber component is 1 to 70 parts. share. The polybutadiene rubber composition can significantly improve the wet slip performance and rolling resistance of the vulcanized rubber at the same time, while maintaining its good wear resistance, and can be used to prepare high-performance automobile tread rubber.

Description

technical field [0001] The invention relates to the field of rubber, and more particularly, relates to a modified rubber masterbatch and a preparation method, a polybutadiene rubber composition modified by the modified rubber masterbatch, a preparation method thereof, and a vulcanized rubber thereof. Background technique [0002] Automobiles are increasingly becoming an indispensable tool in modern life, and the power used by automobiles basically comes from petroleum. Petroleum resources are limited. At the same time, the rapid development of the automobile industry is also facing the pressure of reducing carbon dioxide emissions. How to reduce automobile fuel consumption has become more and more urgent. Reducing fuel consumption can not only reduce vehicle operating costs, but also reduce carbon dioxide emissions and alleviate the tension in oil resources. In addition to being affected by the car's own design factors, the fuel consumption of the car is also one of the imp...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/08C08L9/04C08J3/22C08J3/24C08J3/28C08L9/00
CPCY02T10/86
Inventor 乔金樑丛悦鑫张晓红李迎高建明张乾民宋志海孙艳玲赖金梅宋培军蔡传伦赵国训张红彬戚桂村王亚李秉海
Owner CHINA PETROLEUM & CHEM CORP
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