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Rubber composition containing modified nano white carbon black and preparation method of rubber composition

A rubber composition, nano-silica technology, applied in tire parts, transportation and packaging, special tires, etc., can solve the problems of wear resistance, low friction, wet skid resistance, easy agglomeration of nano-silica, and avoid The effect of slipping, the preparation method is simple and easy, and the environment is pollution-free

Active Publication Date: 2017-10-20
PETROCHINA CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This invention not only effectively solves the problem of re-agglomeration of nano-silica during processing, but also endows the composition with high wear resistance, low friction, and anti-wet skid performance

Method used

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  • Rubber composition containing modified nano white carbon black and preparation method of rubber composition
  • Rubber composition containing modified nano white carbon black and preparation method of rubber composition
  • Rubber composition containing modified nano white carbon black and preparation method of rubber composition

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] (1) Preparation of modified nano white carbon black:

[0034] a. Preparation of monomer pre-emulsion: In terms of mass parts of styrene, 100 parts of styrene, 1 part of sodium dodecylbenzenesulfonate, 120 parts of deionized water, 1.2 parts of sodium carbonate, 0.01 part of persulfuric acid Potassium was put into the reactor together, and when the temperature was raised to 45°C, the mixture was stirred and reacted for 30 minutes to prepare styrene pre-emulsion a.

[0035] b. Preparation of modified nano-silica: In terms of mass parts of nano-silica, 100 parts of nano-silica and 150 parts of deionized water were added to the polymerization kettle and stirred for 10 minutes; then 4 parts of HTDI, 1.0 1 part of sodium hydroxide, heated to 40°C, stirred for 1 hour, then added 2 parts of methacrylamide and 0.5 part of sodium hydroxide and reacted for 30 minutes to form nano-silica powder centered by HTDI and methacrylamide Coated prepolymer; finally add 10 parts of styrene ...

Embodiment 2

[0038] (1) Preparation of modified nano white carbon black: same as Example 1.

[0039] (2) Preparation of styrene-butadiene rubber composition for tire tread: in parts by mass of styrene-butadiene latex SBR1500 (dry base), get 100 parts of styrene-butadiene latex SBR1500 and 2.0 parts of sodium dodecylbenzenesulfonate, 230 parts Add deionized water into the coagulation kettle and stir and mix for 15 minutes, then add 15 parts of modified nano-silica, adjust the pH value of the system to 8.3 with sodium bicarbonate, when the temperature rises to 60°C, stir and mix for 30 minutes, then add 4 parts of hydrochloric acid to carry out Agglomeration, and finally washing, dehydration, drying and briquetting to obtain the styrene-butadiene rubber composition for tire treads. Sampling analysis: standard samples were made by vulcanization, and the test performance is shown in Table 1.

Embodiment 3

[0041] (1) Preparation of modified nano white carbon black: same as Example 1.

[0042] (2) Preparation of styrene-butadiene rubber composition for tire tread: in parts by mass of styrene-butadiene latex SBR1500 (dry base), get 100 parts of styrene-butadiene latex SBR1500 and 3.0 parts of sodium dodecylbenzenesulfonate, 240 parts Add deionized water into the coagulation tank and stir and mix for 20 minutes, then add 25 parts of modified nano-silica, adjust the pH value of the system to 8.7 with sodium bicarbonate, when the temperature rises to 60°C, stir and mix for 50 minutes, then add 4.5 parts of hydrochloric acid to carry out Agglomeration, and finally washing, dehydration, drying and briquetting to obtain the styrene-butadiene rubber composition for tire treads. Sampling analysis: standard samples were made by vulcanization, and the test performance is shown in Table 1.

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Abstract

The invention provides rubber composition with butadiene styrene rubber filled with modified nano white carbon black. Nano white carbon black is modified with aliphatic diisocyanate, then vinyl amide is added for a blocking reaction, then aryl ethylene monomers are pre-emulsified and subjected to in-situ polymerization with unsaturated bonds in vinyl amide, so that a barrier layer adopting a high dispersion structure and having good connection strength is formed on surfaces of nano white carbon black granules, the nano white carbon black granules can be separated under the high temperature or high shearing action and then directly mixed with a butadiene styrene rubber emulsion, and rubber composition with high wear resistance, low friction and wet slip resistance is prepared for tire tread rubber through condensation. The problem that nano white carbon black easily agglomerates again during processing can be effectively solved. The invention further provides a preparation method of the composition.

Description

technical field [0001] The invention relates to a rubber composition and a preparation method thereof, in particular to a rubber composition for filling styrene-butadiene rubber with modified nanometer white carbon black for tire treads and a preparation method thereof. Background technique [0002] As we all know, from the perspective of the expected effect of inorganic powder filling modified rubber, the smaller the particle size of the inorganic powder particles, the better the effect of modification, but it is inevitable in the application process of ultrafine inorganic powder Encountered a technical problem, that is, as the particle size decreases, the specific surface area of ​​ultrafine powder increases, the surface energy increases, and the self-aggregation ability is stronger, so it is more difficult for the ultrafine powder to be mixed, infiltrated and dispersed by rubber materials. Therefore, the dispersion of ultrafine inorganic powder in rubber has become a bott...

Claims

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Application Information

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IPC IPC(8): C08L9/08C08K9/04C08K3/36C08C1/15B60C1/00
CPCB60C1/0016C08C1/15C08K3/36C08K9/08C08K2201/003C08K2201/011C08L9/08
Inventor 徐典宏马岸桢赵洪国丛日新孟令坤燕鹏华郑红兵
Owner PETROCHINA CO LTD
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