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A kind of preparation method of tannic acid modified white carbon black reinforced styrene-butadiene rubber

A technology of styrene-butadiene rubber and white carbon black is applied in the field of preparation of tannic acid-modified silica-reinforced styrene-butadiene rubber, which can solve the adverse effects of rubber and metal skeleton material adhesion, humidity sensitivity, and adverse effects on the quality of vulcanized rubber, etc. problems, to shorten the vulcanization induction period, improve the dispersion, and shorten the vulcanization time.

Active Publication Date: 2020-04-10
山东华勤橡胶科技有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the silane coupling agent used in the prior art is sensitive to humidity, and the degree of silanization reaction with white carbon black mainly depends on the reaction temperature, that is, the mixing temperature or the debinding temperature during mixing, and the side reaction produces ethanol, etc. The gas causes pinholes in the vulcanized rubber, which adversely affects the adhesion of the rubber to the metal framework material, thereby adversely affecting the quality of the vulcanized rubber

Method used

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  • A kind of preparation method of tannic acid modified white carbon black reinforced styrene-butadiene rubber
  • A kind of preparation method of tannic acid modified white carbon black reinforced styrene-butadiene rubber
  • A kind of preparation method of tannic acid modified white carbon black reinforced styrene-butadiene rubber

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Embodiment 1

[0022] This embodiment provides a kind of preparation method of tannic acid modified silica reinforced styrene-butadiene rubber, comprising the following steps:

[0023] After placing 75 parts by weight of SBR1502 and 25 parts by weight of butadiene rubber in an internal mixer for banburying for 3 minutes, add 40 parts by weight of white carbon black, 0.5 parts by weight of tannic acid, 3 parts by weight of zinc oxide, 1 part by weight of stearic acid; after mixing evenly, discharge at 90°C, cool for later use; put the rubber material obtained in the first step into the open mill, and add 2 parts by weight of accelerator CZ, 0.5 parts by weight of DPG and 2 parts by weight of sulfur, after the material is completely eaten, the knife is cut, the film is thinned, the film is removed, and the performance of the vulcanized rubber is tested after parking.

Embodiment 2

[0025] This embodiment provides a kind of preparation method of tannic acid modified silica reinforced styrene-butadiene rubber, comprising the following steps:

[0026] After placing 75 parts by weight of SBR1502 and 25 parts by weight of butadiene rubber in an internal mixer for internal mixing for 3 minutes, add 40 parts by weight of white carbon black, 1 part by weight of tannic acid, 3 parts by weight of zinc oxide, 1 part by weight of stearic acid; after mixing evenly, discharge at 90°C, cool for later use; put the rubber material obtained in the first step into the open mill, and add 2 parts by weight of accelerator CZ, 0.5 parts by weight of DPG and 2 parts by weight of sulfur, after the material is completely eaten, the knife is cut, the film is thinned, the film is removed, and the performance of the vulcanized rubber is tested after parking.

Embodiment 3

[0028] This embodiment provides a kind of preparation method of tannic acid modified silica reinforced styrene-butadiene rubber, comprising the following steps:

[0029] After placing 75 parts by weight of SBR1502 and 25 parts by weight of butadiene rubber in the banbury mixer for 3 minutes, add 40 parts by weight of white carbon black, 1.5 parts by weight of tannic acid, 3 parts by weight of zinc oxide, 1 part by weight of stearic acid; after mixing evenly, discharge at 90°C, cool for later use; put the rubber material obtained in the first step into the open mill, and add 2 parts by weight of accelerator CZ, 0.5 parts by weight of DPG and 2 parts by weight of sulfur, after the material is completely eaten, the knife is cut, the film is thinned, the film is removed, and the performance of the vulcanized rubber is tested after parking.

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Abstract

The invention provides a preparation method of tannin-modified silica-reinforced styrene-butadiene rubber. The preparation method of the tannin-modified silica-reinforced styrene-butadiene rubber comprises the following steps: placing the styrene-butadiene rubber and butadiene rubber in an internal mixer to be internally mixed, successively adding silica, tannin, zinc oxide and stearic acid, discharging materials after mixing uniformly and cooling for later use; putting a rubber material obtained in the first step into a open mill, adding an accelerator and sulfur after fully coating rollers,cutting after completely taking the material, carrying out thin-passing and batch-off and stopping for later use. The tannin-modified silica-reinforced styrene-butadiene rubber prepared by the methodhas multiple advantages of less side reaction, low production cost, good mechanical properties of vulcanizate and the like.

Description

technical field [0001] The invention relates to a rubber preparation method, in particular to a preparation method of tannic acid modified white carbon black reinforced styrene-butadiene rubber. Background technique [0002] Silica is an important reinforcing filler used in the rubber industry. It is often used in light-colored rubber products to replace carbon black for reinforcement to meet the needs of white or translucent products. Compared with carbon black, silica has Lower rolling resistance, stronger adhesion, tear resistance, heat resistance and aging resistance, so it can also replace part of carbon black in black rubber products to obtain high-quality rubber products, such as off-road tires and engineering tires , Radial tires, etc. However, compared with carbon black, silica has poor processability, which seriously limits its application in the rubber industry. In the prior art, silane coupling agents are usually used to modify silica, thereby improving its aff...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L9/06C08L9/00C08K13/06C08K9/04C08K3/36
Inventor 沈梅马晨侯占峰辛振祥
Owner 山东华勤橡胶科技有限公司
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