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Preparation method for liquid phase stirring and mixing of white carbon black and natural rubber

A technology of mixing and mixing silica, which is applied in transportation and packaging, tire parts, rolling resistance optimization, etc., can solve the problems of increasing process steps, uneven mixing, and increasing costs, and achieves simple process, no dust pollution, Effect of improving strength and abrasion resistance

Active Publication Date: 2012-11-14
ZHONGCE RUBBER GRP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the white carbon black slurry in this patent needs to be soaked in deionized water, and at the same time, it needs to be ground during the processing process, which increases the process steps and improves the production cost; in addition, during the stirring process for natural rubber latex, it will Agglomeration occurs, large particles appear, resulting in uneven mixing

Method used

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  • Preparation method for liquid phase stirring and mixing of white carbon black and natural rubber
  • Preparation method for liquid phase stirring and mixing of white carbon black and natural rubber
  • Preparation method for liquid phase stirring and mixing of white carbon black and natural rubber

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] Centrifugal concentration of natural rubber latex and silica slurry

[0039] A. Preparation of slurry

[0040] A component

[0041] formula

Composition (%)

Silica slurry (25% content)

85.47

[0042] water

13.33

Si69

0.66

stabilizer

0.410

Anti-settling agent

0.020

Dispersant

0.103

[0043] B component

[0044] formula

Composition (%)

Concentrated Natural Rubber Latex

56.31

stabilizer

0.54

water

43.15

[0045] Each was stirred at 1500~2500rpm for 2~5 minutes.

[0046] B. Mix and stir, slowly add component A to component B while stirring at a high speed, the mass ratio of component A to component B is 0.8:1, the stirring speed is 2000~6000rpm, and stir for 10 minutes.

[0047] C. Slowly add 0.3kg of glacial acetic acid to the mixture and solidify instantly.

[0048] D. Press filtration, press on the...

Embodiment 2

[0055] Using fresh glue and silica paste collected directly from rubber trees

[0056] A. Preparation of slurry

[0057] A component

[0058] formula

Composition (%)

Silica slurry (25% content)

85.47

water

13.33

Si69

0.66

stabilizer

0.410

Anti-settling agent

0.020

[0059] Dispersant

0.103

[0060] B component

[0061] formula

Composition (%)

fresh glue

99.056

stabilizer

0.944

water

[0062] Each was stirred at 1500~2500rpm for 2~5 minutes.

[0063] B. Mix and stir, slowly add component A to component B while stirring at a high speed, the mass ratio of component A to component B is 1:1, the stirring speed is 2000~6000rpm, and stir for 10 minutes.

[0064] C. Slowly add 0.3kg of glacial acetic acid to the mixture and solidify instantly.

[0065] D. Press filtration, press on the press, squeeze out part of th...

Embodiment 3

[0072] 40phr Silica Content Formula

[0073] A. Preparation of slurry

[0074] A component

[0075] formula

Composition (PHR)

Silica slurry (25% content)

33.2

water

5.18

Si69

0.25

stabilizer

0.15

Anti-settling agent

0.008

Dispersant

0.04

[0076] B component

[0077] formula

Composition (PHR)

fresh glue

32.6

[0078] stabilizer

1.55

water

25

[0079] Each was stirred at 1500~2500rpm for 2~5 minutes.

[0080] B. Mix and stir, slowly add component A to component B while stirring at a high speed, the mass ratio of component A to component B is 1:1, the stirring speed is 2000~6000rpm, and stir for 10 minutes.

[0081] C. Slowly add 0.3kg of glacial acetic acid to the mixture and solidify instantly.

[0082] D. Press filtration, press on the press, squeeze out part of the liquid, and recycle.

[0083] E. Ro...

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PUM

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Abstract

The invention relates to the production field of tire rubber sizing materials, in particular to a method for mixing liquid state white carbon black and liquid state natural rubber in a liquid phase. The preparation method for liquid phase stirring and mixing of the white carbon black and the natural rubber comprises the steps of (1) preparing slurry; (2) mixing; (3) solidifying, dehydrating, washing and stoving. The method adopts liquid-liquid high speed stirring and mixing to effectively preserve original states of natural rubber macromoleculars, effectively preserves brute force of the natural rubber and substantially promotes brute force and abrasive resistance of mixed glue. Brute force of sizing materials mixed by using the method is substantially promoted, and themogenesis and hysteresis loss are obviously reduced. The mixed glue produced by the method can be singly used and can also be blended with the natural rubber, rubber polymer, natural rubber carbon black rubber master batch and rubber polymer carbon black rubber master batch according to certain proportion. According to the method, the liquid state white carbon black and the liquid state natural rubber are mixed directly, the process is simple, the land occupation is small, the equipment investment is low, and dust pollution does not exist in a production process.

Description

technical field [0001] The invention relates to the field of tire rubber compound production, in particular to a method for mixing liquid white carbon black and liquid natural rubber in a liquid phase. Background technique [0002] Natural rubber is widely used in tire industry and rubber industry because of its excellent physical and mechanical properties. Due to the extremely high molecular weight of natural rubber (the average molecular weight is about 700,000), using traditional dry mixing, the natural rubber must first be masticated (by mechanical force and high temperature degradation to reduce the molecular weight) and then added in the mechanical shearing process. Required carbon black, white carbon black and other activators, antioxidants, vulcanizing agents. In this process, the macromolecules of natural rubber are severely damaged, so that the strong wear performance decreases. To make up for the decline in strength and wear. Designers traditionally use a large...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L7/02C08K3/36B60C1/00
CPCY02T10/862
Inventor 楼齐淼徐新建沈建农洪佳金振涣
Owner ZHONGCE RUBBER GRP CO LTD
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