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A kind of rubber composition and vulcanized rubber and preparation method thereof

A rubber composition and rubber technology, applied in transportation and packaging, rolling resistance optimization, special tires, etc., can solve problems such as large rolling resistance, permanent deformation, large heat generation, difficult high-performance green tires, etc.

Active Publication Date: 2019-02-19
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Studies have shown that although styrene-butadiene rubber has good physical and mechanical properties of vulcanized rubber, the strength of the mixed rubber is small, which is not conducive to the processing and dimensional stability of semi-finished rubber products, and because of its aging resistance, resilience and wear resistance of vulcanized rubber General performance, permanent deformation, high heat generation, especially high rolling resistance, so it is difficult to be used as a high-performance green tire
Although polycyclopentene rubber has low glass transition temperature, high raw rubber strength, strong adhesion, high air tightness, good aging resistance and shrinkage, strong flex resistance, large amount of carbon black and oil filling, easy processing Excellent performance and its vulcanized rubber can also show the advantages of high rebound, low hysteresis, low heat generation, low rolling resistance and excellent anti-wear performance, but its raw rubber Mooney viscosity is too high, which is not conducive to rubber processing, and vulcanized rubber Tensile strength and tear strength are small, it is difficult to use alone in rubber compositions

Method used

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  • A kind of rubber composition and vulcanized rubber and preparation method thereof
  • A kind of rubber composition and vulcanized rubber and preparation method thereof
  • A kind of rubber composition and vulcanized rubber and preparation method thereof

Examples

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preparation example Construction

[0015] The polycyclopentene rubber can be prepared by ring-opening polymerization of cyclopentene. Specifically, when the polycyclopentene rubber is prepared by ring-opening polymerization, the preparation method includes: performing ring-opening polymerization of cyclopentene in a solvent in the presence of a ring-opening polymerization catalyst and a molecular weight regulator.

[0016] Wherein, the ring-opening polymerization catalyst can adopt various existing catalysts capable of ring-opening polymerization of cyclopentene, such as tungsten or molybdenum two-component or three-component catalysts, tantalum, niobium, rhenium catalysts, and At least one of the metal catalysts is preferably a catalytic system composed of tungsten-containing compounds and / or molybdenum-containing compounds, organoaluminum compounds and / or activators. Wherein, the tungsten-containing compound may be tungsten hexachloride, and the molybdenum-containing compound may be molybdenum tetrachloride. ...

preparation example 1

[0077] This preparation example is used to illustrate the polycyclopentene rubber provided by the present invention and its preparation method.

[0078] In a 2L reactor replaced with purified nitrogen, 200g of cyclopentene, 800g of n-hexane, 20.0mL of toluene solution containing 0.05mol / L trichlorophenol, 20.0mL of toluene solution containing 0.03mol / L WCl 6 33.3mL of toluene solution and 6.0mL of hexane solution containing 0.1mol / L 1-butene, stir evenly and keep the temperature of the reaction material at 0°C, then add toluene containing 0.3mol / L triisobutylaluminum under stirring Solution 13.3mL, filled with refined nitrogen to keep the reactor pressure at 0.2MPa (gauge pressure), constant temperature reaction for 3.0 hours, after the polymerization reaction ended, add 20mL concentration of 100g / L 2,6-di-tert-butyl- The 4-methylphenol ethanol solution terminated the reaction, and then the glue solution was released and coagulated with ethanol. The obtained polymer was dried ...

preparation example 2

[0080] This preparation example is used to illustrate the polycyclopentene rubber provided by the present invention and its preparation method.

[0081] Prepare polycyclopentene rubber according to the method of Preparation Example 1, the difference is that 20.0 mL of toluene solution containing 0.05 mol / L trichlorophenol is replaced with 16.0 mL of 0.05 mol / L tetrachlorophenol toluene solution, and 0.1 mol / L The amount of hexane solution of L 1-butene is 7.2mL, the amount of toluene solution containing 0.3mol / L triisobutylaluminum is 11.6mL, the polymerization reaction temperature is -5°C, and the reactor pressure is 0.5MPa (gauge pressure), the polymerization reaction time was 3.0 hours, and 160.2 g of polycyclopentene rubber was obtained. After detection, the content of the trans structure in the polycyclopentene was 84.6% by weight, the number average molecular weight of the polymer was 178500, the molecular weight distribution was 1.87, and the Mooney viscosity was 50.

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Abstract

The present invention provides a rubber composition, and a vulcanized rubber and a preparation method thereof. The rubber composition contains a main rubber, a vulcanizing agent, a vulcanization accelerator, an activator and a reinforcing agent, wherein the main rubber contains a polycyclopentene rubber and a solid styrene-butadiene rubber, the content of the trans-structure in the polycyclopentene rubber is more than 50 wt% by adopting the total weight of the polycyclopentene rubber as the reference, and the rubber composition further contains a liquid styrene-butadiene rubber and / or liquid butadiene rubber. According to the present invention, the mooney viscosity of the mixed rubber obtained from the rubber composition is proper; and the obtained vulcanized rubber maintains the good physical and mechanical property, and further has the advantages of good aging resistance, good resilience, good wear resistance, low permanent deformation, low dynamic deformation, low heat production and low rolling resistance so as to improve the aging resistance of the rubber, reduce the heat production of the tire, improve the tire durability, extend the tire service life, easily achieve energy saving and consumption reducing of the tire, and provide the industrial application prospects.

Description

technical field [0001] The invention relates to a rubber composition, a method for preparing vulcanized rubber using the rubber composition as a raw material, and a vulcanized rubber prepared by the method. Background technique [0002] With the development of the automobile industry, the requirements for various aspects of rubber suitable for automobile tires are getting higher and higher. On the premise of ensuring the safety of the tires during driving, there is a high demand for prolonging the service life of the tires and reducing the fuel consumption of automobiles. Pay attention to. This requires that tires not only have good physical and mechanical properties, but also have excellent aging resistance, wear resistance, low permanent deformation, low heat generation, high wet skid resistance and low rolling resistance, and need to meet safe driving and Energy saving needs. In addition, it is also required that the strength of raw rubber and mixed rubber in the proces...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L65/00C08L9/06C08L9/00C08K13/02C08K3/04C08K3/22C08K5/18C08K5/378C08K5/09C08G61/02B29C35/02B60C1/00
CPCY02T10/86
Inventor 贺小进王雪李传清韩书亮李良杰陈淑明
Owner CHINA PETROLEUM & CHEM CORP
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