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High trans-1,4-polyisoprene modified by oil-extended high vinyl polybutadiene rubber by molybdenum catalyst system

A high-vinyl polybutadiene and polyisoprene technology, applied in the field of rubber processing, can solve the problems of poor TPI processing performance, poor wet skid resistance, poor cold resistance, etc.

Inactive Publication Date: 2009-12-30
周兆敏
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to set out from the angle of rubber blending, adopt traditional processing method, prepare a kind of TPI / HVBR and use Overcome the disadvantages of poor elasticity and cold resistance of HVBR and poor processability and wet skid resistance of TPI

Method used

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  • High trans-1,4-polyisoprene modified by oil-extended high vinyl polybutadiene rubber by molybdenum catalyst system
  • High trans-1,4-polyisoprene modified by oil-extended high vinyl polybutadiene rubber by molybdenum catalyst system

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Experimental program
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Embodiment Construction

[0012] raw material

[0013] High trans-1,4-polyisoprene (TPI)

[0014] It is prepared by catalyzing the polymerization of isoprene with a supported titanium catalyst, etc., and the content of trans-1,4-structure is ≥98%.

[0015] Oil-filled molybdenum-based high-vinyl polybutadiene rubber, using molybdenum-based catalysts to synthesize high Mooney base rubber, vinyl content = 82 ML 1+4 100℃=89, high aromatic oil oil extension is 37.5 parts, oil-extended rubber ML 1+4 100°C=47.

[0016] Other processing aids are common commercial products.

[0017] And glue preparation process

[0018] First plasticize TPI on the open mill, and then add oil-extended HVBR after TPI is fully plasticized. After the rubber is mixed evenly, add zinc oxide, stearic acid, anti-aging agent, carbon black, process oil, sulfur and accelerator in turn, and then release the film after 4-6 times of thinning.

[0019] Table 1 below shows the formulas of 6 examples of the present invention, and Ta...

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Abstract

The invention provides a blend of oil-extended high vinyl polybutadiene rubber (HVBR) by molybdenum catalyst system and high trans-1,4-polyisoprene (TPI), which is prepared by blending and sulfurization through blending or banburying processing technology. For example, when the blending ratio of the TPI to the HVBR is 25 to 75 mass portions, the blend can reduce rolling resistance by 20 percent than a sizing material with the blending ratio of 0 to 100; and when the blending ratio of the TPI to the HVBR is 5 to 95 mass portions, the blend can reduce the rolling resistance and maintain good wet traction.

Description

(1) Technical field [0001] The invention relates to a modified oil-extended molybdenum series high vinyl polybutadiene rubber with low rolling resistance and low dynamic heat generation preparation. The system uses high trans-1,4-polyisoprene (TPI for short) and oil-extended molybdenum-based high vinyl polybutadiene Made by blending and co-vulcanizing rubber. The invention belongs to the technical field of rubber processing. (2) Background technology [0002] High-vinyl polybutadiene rubber refers to polybutadiene rubber with a mass fraction of 1,2-structure in the molecular chain greater than 70%. It is not Some excellent properties of rubber, with high anti-wet skid and anti-aging properties, can be used alone for automobile tires and various Products, but its main disadvantages are poor wear resistance, elasticity and cold resistance. [0003] Trans-1,4-polyisoprene rubber, also known as synthetic eucommia gum, gutta percha, and balata gum, can be used as a su...

Claims

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Application Information

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IPC IPC(8): C08L9/00C08K5/01C08J3/24
Inventor 周兆敏
Owner 周兆敏
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