Poly-mercapto compound-containing white carbon black-filled rubber composite material and preparation method thereof

A technology of polymercapto compounds and filling rubber, which is applied in the field of rubber composite materials and its preparation, and can solve problems such as VOC emissions, high energy consumption, and poor dispersion effect of soap-salt dispersants

Active Publication Date: 2017-08-08
CHENGDU GUIBAO SCI & TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] It mainly solves the dispersion problem of silica in the rubber matrix, and improves the problems of poor dispersion effect of soap salt dispersants and complicated treatment process of silane coupling agent, high energy consumption and VOC emission.

Method used

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  • Poly-mercapto compound-containing white carbon black-filled rubber composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] Example 1: The formula is: 100 parts by mass of solution-polymerized styrene-butadiene rubber, 100 parts of white carbon black, 10 parts of poly(mercaptylmethyl)siloxane, and other components are: 40 parts of aromatic oil, 5 parts of zinc oxide 2 parts, 2 parts of stearic acid, 2 parts of accelerator CZ, 0.2 parts of accelerator TMTD, 1.5 parts of sulfur, 1.5 parts of antioxidant RD, and 1 part of paraffin. The process is as follows: first mix other raw materials except the accelerator and sulfur in the internal mixer at 60°C for 15 minutes, then add the accelerator and sulfur to the open mill at 20°C after degumming and cooling, and mix well. The vulcanization condition is 160°C, Positive vulcanization time.

Embodiment 2

[0032] Example 2: The formula is: 75 parts by mass of solution-polymerized styrene-butadiene rubber, 25 parts of butadiene rubber, 60 parts of white carbon black, 0.3 part of 1,4 butanedithiol; other components are: 5 parts of zinc oxide, hard 2 parts of fatty acid, 1.8 parts of accelerator CZ, 0.3 parts of accelerator TMTD, 1.5 parts of sulfur, 1.5 parts of anti-aging agent RD, 1 part of paraffin. The process is as follows: first mix other raw materials except the accelerator and sulfur on the open mill at 20°C for 15 minutes, then add the accelerator and sulfur, mix well, and the vulcanization conditions are 160°C and normal vulcanization time.

Embodiment 3

[0033]Example 3: The formula is: 100 parts by mass of natural rubber, 10 parts of white carbon black, 0.01 part of 2,4,6-trimercapto-s-triazine; other components are: 1 part of Si-69 silane coupling agent, carbon 40 parts of black, 5 parts of zinc oxide, 2 parts of stearic acid, 1.8 parts of accelerator NS, 1.5 parts of sulfur, 1.5 parts of anti-aging agent RD, 1 part of paraffin. The process is as follows: first mix other raw materials except the accelerator and sulfur in the internal mixer at 80°C for 10 minutes, then raise the temperature to 200°C and keep the temperature and cut for 0.1 minute, after debinding and cooling, add the accelerator on the mixer at 30°C Mix with sulfur, the vulcanization condition is 150°C and the normal vulcanization time.

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Abstract

The invention relates to a poly-mercapto compound-containing white carbon black-filled rubber composite material and a preparation method thereof, belonging to the technical fields of rubber formulas and processes. The poly-mercapto compound-containing white carbon black-filled rubber composite material is characterized by being prepared from 100 parts of unsaturated rubber or blend rubber thereof, 10-100 parts of white carbon black and 0.01-10 parts of a poly-mercapto compound; the rubber composite material is prepared by adding a silane coupling agent with double bonds and compounding ingredients into the raw materials, wherein the molar ratio of the double bonds to mercapto is equal to (0.01 to 1)-((n-1) to n), or not adding the silane coupling agent with double bonds; n is mercapto number of each molecule of poly-mercapto compound. The preparation method not only can flexibly adjust white carbon black-rubber interfacial action according to the varieties of raw rubber and the white carbon black, product performance requirements, raw material cost, and the like so as to achieve the effect superior to the common mercapto silane coupling agents, but is also simple and convenient in anticipatory reaction process so as to easily realize industrial implementation.

Description

[0001] Technical field: [0002] The invention relates to a rubber composite material and a preparation method thereof, belonging to the technical field of rubber formula and technology. [0003] Background technique: [0004] Silica, as a commonly used filling and reinforcing agent for rubber, occupies a very important position in the rubber compounding system, and is especially suitable for preparing tire treads with high wet skid resistance and low rolling resistance. However, silica has a large specific surface area, small particle size, high surface polarity and many silanol groups, which makes untreated silica easy to agglomerate in the rubber matrix. On the one hand, it reduces the reinforcing efficiency of silica. On the other hand, the destruction-rebuilding cycle of aggregates under dynamic loads will lead to serious energy loss, which is not conducive to reducing the rolling resistance of tires. Therefore, the dispersion of silica is the focus and difficulty in its ...

Claims

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Application Information

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IPC IPC(8): C08L9/06C08L83/08C08L9/00C08L7/00C08L91/06C08L23/16C08L83/07C08K13/02C08K3/36C08K5/37C08K5/548
CPCC08L7/00C08L9/06C08L23/16C08L2205/02C08L2205/03C08L2205/035C08L83/08C08K13/02C08K3/36C08L9/00C08K5/37C08L91/06C08K5/378C08K5/548C08L83/04
Inventor 吴友平孙钲任宏远黄强熊婷杨林张立群王有治
Owner CHENGDU GUIBAO SCI & TECH
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