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Tread rubber material for reducing tire rolling resistance as well as tread rubber and preparation method thereof

A technology of rolling resistance and tread rubber, which is applied in the direction of rolling resistance optimization, special tires, tire parts, etc., can solve the problems of tire heat generation is not obvious, the manufacturing process is complicated, and the payne effect is high, achieving high amorphous structure content, Effects of reduced fuel consumption and low content of crystalline block units

Active Publication Date: 2018-10-09
CHINA PETROLEUM & CHEM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] In view of the defects in the molecular configuration and microstructure of epoxy rubber or chlorohydrin rubber in the prior art, the complex manufacturing process of the main chain modifier of the existing SSBR and the functionalized sealing rate of the existing SSBR molecular end Less than 50%, when applied to high-performance tire tread rubber, the produced tread rubber does not significantly reduce tire heat generation, and the Payne effect is still relatively high.

Method used

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  • Tread rubber material for reducing tire rolling resistance as well as tread rubber and preparation method thereof
  • Tread rubber material for reducing tire rolling resistance as well as tread rubber and preparation method thereof
  • Tread rubber material for reducing tire rolling resistance as well as tread rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0100] Catalyst complex preparation:

[0101] Place the 200mL two-necked ox-horn bottle replaced with dry nitrogen into an ice-water bath at -5~5°C, and then use a syringe to inject 110mL of 20% triethylaluminum, 23mL of ether, 1.6mL of water, and 10.2mL of acetylacetone. Pour it into a horn bottle (the above are the mass contents), and after 30 minutes of magnetic stirring, the catalyst complex can be completely reacted, wherein the aluminum content in the complex solution is 1.21mol / L.

[0102] Add cyclohexane 2900mL, epichlorohydrin 37.0g, ethylene oxide 8.8g, allyl glycidyl ether 20.8g, propylene oxide 185.6g and ethylene glycol diglycidyl ether into a 5L steel polymerization kettle 0.70g, then the temperature of the material in the polymerization kettle is raised to 75~85°C with a hot water bath, and at this moment, a syringe is used to inhale a mixture of triethylaluminum: ether: water: acetylacetone=1: 1.5: 0.5: 0.5 (mol ratio ) composed of catalyst complex 26mL (the a...

Embodiment 2

[0104] In embodiment 1, other process conditions are kept unchanged, only the catalyst is changed into a catalyst complex (wherein the catalyst complex ring The aluminum content in the hexane solution is 1.05mol / L), inhale 30mL with a syringe and add it to the polymerization kettle for reaction. The finally obtained random alternating unsaturated epoxy-epoxyether rubber has a Mooney viscosity of 68.

Embodiment 3

[0106]Preheat the 160×320 two-roll mill to 80-120°C. At this time, 15g of the unsaturated epoxy-ether chloride rubber prepared in Implementation 1, 112.5g of VSL5025-2HM (wherein, the oil content is 27.3wt%, ethylene Base content 63moL%, S / B=25 / 75), BR-9000 37.5g, dibutyl phthalate 7.5g into the two-roller mill, adjust the roller distance until the rubber material is broken and completely wrapped in the roller After that, mix 20g of TDAE oil and Si-69 10.5g into 90g of white carbon black, and add it to the mixed rubber on the mill in two times, and then put 10g of carbon black and 4.5g of zinc oxide on the roller , 2.25g of stearic acid, 3.0g of anti-aging agent 4020, 1.5g of anti-aging agent RD, and 1.5g of wax are added to the rubber material of the roller. Cool the masterbatch to room temperature. Next, put the masterbatch into the opened cooling mill, and put chilled water into it, control the roll temperature to 50-60°C, after the masterbatch is completely wrapped, put 2...

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Abstract

The invention provides a tread rubber material for reducing tire rolling resistance. The tread rubber material comprises unsaturated epoxy-chloroether rubber, SSBR, BR, zinc oxide, stearic acid, whitecarbon black, carbon black, a softening agent, a silane coupling agent, an anti-aging agent, wax, environmentally-friendly rubber oil, an accelerant and sulfur. The unsaturated epoxy-chloroether rubber is formed by performing ring opening copolymerization on a monomer composed of allyl glycidyl ether, propylene oxide, ethylene oxide, epoxy chloropropane and ethylene glycol diglycidyl ether underthe action of a trialkyl aluminum catalyst. The invention further provides tread rubber prepared by adopting the tire tread compound and a preparation method thereof. The tread rubber material as wellas the tread rubber and the preparation method thereof provided by the invention have the benefits that the adopted components are easy to mix; a vulcanized component as a radial car tire tread material is less in consumption of a modified compound, high in vulcanized rubber strength and large in ground gripping force; compared with an original unmodified SSBR composite material, the tread rubbermaterial is low in compression heat generation and has a rolling resistance improvement rate of reaching 26-31 percent.

Description

technical field [0001] The invention relates to a method for preparing a high-performance tire tread material by combining epoxy-chloroether rubber with low crystallization and unsaturated double bonds and solution-polymerized styrene-butadiene rubber; it belongs to the field of preparation and application of functionalized ultra-high-performance radial tires. Background technique [0002] A polymer obtained by alternating ring-opening copolymerization of epoxy compounds such as ethylene oxide and propylene oxide under the action of Ziegler-Natta catalysts is collectively called epoxy rubber; The polymer formed by ring-opening copolymerization of alkanes is called epichlorohydrin rubber. The above-mentioned epoxy rubber and epichlorohydrin rubber have good heat resistance, oil resistance, weather resistance, air permeability resistance and cold resistance. Widely used in automobiles, airplanes and various mechanical parts, such as gaskets, sealing rings, diaphragms, etc., a...

Claims

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Application Information

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IPC IPC(8): C08G65/24C08G65/08C08G65/12C08L9/06C08L9/00C08L71/03C08L91/00C08L91/06C08K13/02C08K5/134C08K5/12C08K3/22C08K3/36C08K3/04B60C1/00
CPCB60C1/0016C08G65/08C08G65/12C08G65/24C08L9/06C08L2205/02C08L2205/035C08L9/00C08L71/03C08L91/00C08L91/06C08K13/02C08K5/1345C08K5/12C08K2003/2296C08K3/36C08K3/04Y02T10/86
Inventor 张建国贺卉昌宁朝晖蒋文英张书会
Owner CHINA PETROLEUM & CHEM CORP
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