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Wet-processed carbon masterbatch, as well as preparation method and application thereof

A technology of masterbatch and carbon black, which is applied in the field of wet-process carbon black masterbatch and its preparation, can solve the problems of reducing the surface activity of fillers, inapplicability, long mixing time, etc., and achieve reduced compression heat generation and good stability , good aging resistance effect

Inactive Publication Date: 2016-11-09
ZHEJIANG TRANSFAR SYNTHETIC MATERIAL CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method is only limited to styrene-butadiene latex, and is not applicable to the glue of solution-polymerized rubber.
[0005] The masterbatch containing filler can be provided by wet mixing of carbon black filler and rubber glue. Although it can reduce the time-consuming and polluting problems of existing rubber filling, the existing technology still requires a long mixing time and cannot Provide efficient and rapid technical means to achieve wet mixing, and it is not suitable for uniform dispersion of carbon black fillers in solution polymerization rubber glue in industrial production
[0006] Japanese Special Table No. 2001-518401 records the mixing of rubber additives in the carbon black slurry of wet master batches. However, when using these existing methods to mix glue and carbon black slurry, the existing additives will reduce the filler. surface activity, which impairs the filler-rubber interaction

Method used

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  • Wet-processed carbon masterbatch, as well as preparation method and application thereof
  • Wet-processed carbon masterbatch, as well as preparation method and application thereof
  • Wet-processed carbon masterbatch, as well as preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] In the open mill, add 3 parts of zinc oxide and 2 parts of stearic acid to 100 parts of butadiene rubber BR9000 (dry rubber) and mix evenly, then add 60 parts of N234 carbon black and 15 parts of naphthenic oil, after mixing Add 0.9 parts of accelerator TBBS and 1.5 parts of sulfur powder, park the mixed rubber for 2 hours, and vulcanize it to positive vulcanization with a flat vulcanizer at 145°C to obtain dry vulcanized rubber 1.

Embodiment 2

[0056]400 parts of desalted water, 60 parts of carbon black, 2.5 parts of amphoteric surfactants, 0.1 part of emulsifying dispersant, and 1 part of pH regulator are put into carbon black, part of desalinated water (80% of the total desalted water), emulsified dispersant, Amphoteric surfactant, lower the temperature to 5-11°C, during the grinding process, slowly add a pH regulator (obtained by dissolving 20% ​​of the total desalted water), and continue grinding for 30 minutes after adding the pH regulator to obtain a modified carbon black slurry; The modified carbon black slurry is mixed with the butadiene rubber glue to obtain a suspension, which is dried to obtain a master batch.

[0057] In the internal mixer, after mixing 48 parts of masterbatch and 70 parts of natural rubber, add 3.5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of anti-aging agent 4020, 1 part of anti-aging agent RD, and 2 parts of microcrystalline wax , 2 parts of 203 resin, 0.25 parts of CTP, af...

Embodiment 3

[0059] 400 parts of desalinated water, 60 parts of carbon black, 1.5 parts of amphoteric surfactants, 0.1 part of emulsifying dispersant, and 1 part of pH regulator are dropped into carbon black, part of desalinated water (80% of the total desalinated water), emulsifying dispersant, Amphoteric surfactant, lower the temperature to 5-11°C, during the grinding process, slowly add a pH regulator (obtained by dissolving 20% ​​of the total desalted water), and continue grinding for 30 minutes after adding the pH regulator to obtain a modified carbon black slurry; The modified carbon black slurry is mixed with the butadiene rubber glue to obtain a suspension, which is dried to obtain a master batch.

[0060] In the internal mixer, after mixing 48 parts of masterbatch and 70 parts of natural rubber, add 3.5 parts of zinc oxide, 2 parts of stearic acid, 2 parts of anti-aging agent 4020, 1 part of anti-aging agent RD, and 2 parts of microcrystalline wax , 2 parts of 203 resin, 0.25 part...

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Abstract

The invention discloses wet-processed carbon masterbatch, as well as a preparation method and application thereof. When a glue solution and carbon black slurry are mixed by utilizing an existing method, the used auxiliary agent reduces the surface activity of filler and influences the interaction between the filler and rubber. The technical scheme is divided into two parts, the carbon black is subjected to surface modification and dispersion in the first part; and in the second part, a carbon black dispersant is mixed with a rubber solution, and the mixture is separated, dried and molded. According to the invention, a surface modification and homodisperse combined method is adopted for carbon black dispersion, and thus the modified carbon black dispersant has high stability. Vulcanized rubber prepared by utilizing the wet-processed carbon masterbatch has good aging resistance, and a tyre prepared from the vulcanized rubber can be used for reducing compression heat, oil consumption and the like.

Description

technical field [0001] The invention relates to the field of master batches, in particular to a wet-process carbon black master batch and its preparation method and application. Background technique [0002] In the preparation process of rubber products, the filling and matching of rubber is an extremely important link, which determines the final performance of rubber products. The usual rubber filling method is to mix rubber with carbon black fillers and chemicals in an internal mixer and an open mixer, that is, dry mixing. The disadvantage is that the carbon black has poor dispersion and is not conducive to environmental protection. [0003] Wet-process carbon black masterbatch is to disperse carbon black in latex formed by polymerization, and then carry out coagulation, dehydration, drying and other finished processes. Wet-process carbon black masterbatches can significantly improve the dispersion of carbon black in polymers. [0004] Wet mixing of filler and rubber glu...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L9/00C08K9/04C08K3/04C08L7/00C08L91/06C08K13/06C08K3/22C08K5/09C08J3/22
CPCC08K9/08C08J3/226C08J2307/00C08J2409/00C08K3/04C08K9/04C08L7/00C08L2205/035C08L2312/00
Inventor 张尧蒋东文张学琪朱梦斌瞿少敏齐平平
Owner ZHEJIANG TRANSFAR SYNTHETIC MATERIAL CO LTD
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