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Tread rubber material for snow tire

A technology for tread rubber and snow tires, applied in the field of snow tire tread compounds, can solve the problems of poor ice-skid resistance, poor surface cells, uneven foaming, etc., and achieves good thermal stability and processing. Improved safety, cell size and uniform distribution

Active Publication Date: 2017-11-17
SAILUN GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the poor anti-ice skid performance of existing snow tires, there are several quality problems such as uneven foaming, easy decomposition, and poor surface cells in the actual production process of using chemical foaming agents. The present invention aims to provide an anti-ice skid Snow tire tread formula with good performance, the formula contains pre-expanded sub-microspheres, so that the tire can tightly adhere to the ice and snow road, ensure excellent ice grip, improve driving comfort, and improve tire safety; this formula does not use Chemical foaming agent, avoiding the quality problems caused by chemical foaming agent

Method used

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  • Tread rubber material for snow tire
  • Tread rubber material for snow tire
  • Tread rubber material for snow tire

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1-3

[0058] The formula of table 1 embodiment 1-3 and comparative example 1

[0059]

[0060]

[0061] Among them, the chemical foaming agent is Chemmix OBSH-75 produced by Shanghai Jingyi Rubber Technology Co., Ltd., the total sulfur content is 12.0-14.0%, and the density at 20°C is 1.20-1.30g / cm 3 , Gas generation at 20°C ≥ 95.0ml / g, Mooney viscosity ML(1+4) 40-70 at 50°C.

[0062] The preparation technology of embodiment 1-3:

[0063] (1) One stage of rubber mixing: mixing is carried out in a Banbury internal mixer, adding raw rubber, zinc oxide, stearic acid, and 50 parts of carbon black, pressing the top bolt and mixing for 25 seconds, then raising the top bolt , add the remaining carbon black, rubber operating oil, anti-aging agent RD, anti-aging agent 4020, protective wax, press the top bolt, knead for 30 seconds, lift the top bolt to clean, press the top bolt and knead for 25 seconds, raise the top bolt Cleaning, pressing the top bolt and mixing for 25 seconds, open...

Embodiment 4-6

[0069]The formula of table 2 embodiment 4-6 and comparative example 2

[0070]

[0071] Remarks: The ordinary white carbon black described in the examples is JINSIL 700 produced by Jinneng Technology Co., Ltd., and the nitrogen adsorption specific surface area is 178m 2 / g; Low surface area and highly dispersed silica is 822MP produced by Wuxi Hengcheng Silicon Industry Co., Ltd., and the nitrogen adsorption specific surface area is 118m 2 / g; High specific surface area and highly dispersed silica is Ultrasil 9000GR produced by Evonik, with a nitrogen adsorption specific surface area of ​​235m 2 / g.

[0072] Embodiment 4-6 preparation technology:

[0073] (1) One-stage master batch: adjust the speed of the meshing mixer to 55r / min, add raw rubber, 1 / 2 white carbon black, 3 / 4 parts of sulfur-containing organosilicon compounds, and guanidine accelerators, and press on the top The bolt is mixed for 35s; raise the top bolt, add 1 / 4 white carbon black, 3 / 4 rubber operating oi...

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Abstract

The invention relates to a tread rubber material for a snow tire. 0.2wt%-4.0wt% of pre-expanded submicrospheres are dispersed in the tread rubber material; further, the tread rubber material in the formula is prepared from components in parts by weight as follows: 100.0 parts of rubber, 60.0-90.0 parts of reinforcing filler, 3.0-8.0 parts of an active agent, 0.0-6.4 parts of a sulfur-containing organosilicon compound, 0.5-4.5 parts of an anti-aging agent, 1.0-2.5 parts of protective wax, 20.0-45.0 parts of rubber operating oil, 0.8-2.5 parts of sulfur (in terms of pure sulfur content), 0.8-3.5 parts of an accelerant, 1.0-7.0 parts of pre-dispersing master batch of the pre-expanded submicrospheres and 0.1-0.4 parts of an anti-scorching agent. According to the tread rubber material for the snow tire, the pre-expanded submicrospheres are utilized to replace a chemical foaming agent, cell size and distribution are uniform, and outstanding on-ice slipping resistance can be realized in the whole life cycle of the tire; the formal design is flexible, the raw material selection range is enlarged, the processing conditions are easy, the safety is improved, and the quality is stable.

Description

technical field [0001] The invention belongs to the technical field of tires, in particular to a snow tire tread rubber material with excellent anti-ice skid performance Background technique [0002] The winter temperature in northern my country is usually below -20°C, while in low-latitude regions such as Russia, the average daily temperature in winter is as low as -40°C. Ordinary rubber tires will become hard under severe winter weather conditions, and the grip will be greatly reduced, especially on ice and snow roads. The handling performance is poor; the winter weather is very cold, but the tire temperature is high. A layer of water film is formed between the surface and the ice surface, causing the tire surface to be unable to contact the road surface or even the ice surface. Bring great potential safety hazard, also increase because of the accident that road area snow freezes. Therefore, high-performance snow tires with higher low temperature resistance and ice skid ...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L9/00C08L9/06C08L91/06C08K13/02C08K3/04C08K5/09C08K3/22C08K5/40C08J9/14B60C1/00
CPCB60C1/0016C08J9/141C08J2307/00C08J2409/00C08J2409/06C08K2003/2296C08L7/00C08L2203/14C08L2205/035C08L9/00C08L91/06C08K13/02C08K3/04C08K5/09C08K3/22C08K5/40C08L9/06
Inventor 李雯闫平李卫国
Owner SAILUN GRP CO LTD
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