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Preparation method of flexing-resistant transmission belt rubber latex

A technology of rubber emulsion and transmission belt, applied in the field of rubber materials, can solve the problems of high cost, long reaction time, and great environmental damage, and achieve the effects of high resistance to flexural fatigue, high peeling resistance, and low environmental pollution

Inactive Publication Date: 2015-06-03
QINGDAO ZHONGTIAN XINDA BIOTECH R & D
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, this method requires high-temperature degradation, which consumes a lot of energy and costs a lot. In addition, the performance of the liquid natural rubber prepared by photocatalysis is not very good, the structure is quite complex, the reaction time is long, and the degradation rate of NR cannot be well controlled. , not suitable for industrialized production, more harmful to the environment

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] A kind of preparation method of flexible transmission belt rubber emulsion is characterized in that, comprises the steps:

[0017] (1) Water preparation phase: Add 100 parts of deionized water, 0.2 parts of EDTA, 0.2 parts of dispersant MF and 1 part of FeSO4 into the reactor according to the weight parts, and stir to dissolve;

[0018] (2) Oil dispensing phase: Take 50 parts of isoprene IP and 25 parts of acrylonitrile AN according to the weight parts, add them to the monomer tank, stir and dissolve;

[0019] (3) Preparation of latex: Mix the oil phase and water phase evenly, add 8% surfactant sodium lauryl sulfate to make a solution, and dilute the latex to 20% with distilled water, let it stand for 8 hours, and then centrifuge to concentrate to 60 %;

[0020] (4) Internal mixing: Mix nitrile rubber and the above-mentioned latex into the internal mixer at a ratio of 3:1, control the temperature at 45°C, and rotate at a speed of 35 rpm. At the same time, add 3% sulfur...

Embodiment 2

[0023] A kind of preparation method of flexible transmission belt rubber emulsion is characterized in that, comprises the steps:

[0024] (1) Water preparation phase: Add 100 parts of deionized water, 0.3 parts of diethylamine tetraacetic acid EDTA, 0.2 parts of dispersant MF and 1.2 parts of FeSO4 into the reactor according to parts by weight, and stir to dissolve;

[0025] (2) Oil dispensing phase: Take 53 parts of isoprene IP and 28 parts of acrylonitrile AN according to the weight parts, add them to the monomer tank, stir and dissolve;

[0026] (3) Preparation of latex: Mix the oil phase and water phase evenly, add 8% surfactant sodium lauryl sulfate to make a solution, and dilute the latex to 21% with distilled water, let it stand for 10h, and then centrifuge and concentrate to 60 %;

[0027] (4) Internal mixing: Mix nitrile rubber and the above-mentioned latex into the internal mixer at a ratio of 3:1, control the temperature at 48°C, and rotate at a speed of 35 rpm. At...

Embodiment 3

[0030] A kind of preparation method of flexible transmission belt rubber emulsion is characterized in that, comprises the steps:

[0031] (1) Water preparation phase: add 100 parts of deionized water, 0.4 parts of diethylamine tetraacetic acid EDTA, 0.3 parts of dispersant MF and 1.2 parts of FeSO4 into the reactor according to the weight parts, and stir to dissolve;

[0032] (2) Oil dispensing phase: Take 55 parts of isoprene IP and 30 parts of acrylonitrile AN according to the weight parts, add them to the monomer tank, stir and dissolve;

[0033] (3) Preparation of latex: Mix the oil phase and water phase evenly, add 8% surfactant sodium lauryl sulfate to make a solution, and dilute the latex to 22% with distilled water, let it stand for 12h, and then concentrate it to 60% by centrifugation %;

[0034] (4) Internal mixing: Mix nitrile rubber and the above-mentioned latex into the internal mixer at a ratio of 3:1, control the temperature at 50°C, and rotate at a speed of 35...

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Abstract

The invention discloses a preparation method of a flexing-resistant transmission belt rubber latex, which is characterized by comprising the following steps: (1) preparing a water phase; (2) preparing an oil phase; (3) preparing a latex; (4) banburying; and (5) preparing the compounded rubber. The method has the advantages of simple technique, small environmental pollution, low energy consumption and low cost. The prepared rubber material has the advantages of high flexing fatigue resistance and high peel resistance, can satisfy demands for multiple purposes, satisfies the demands for market diversification, and is suitable for industrial production.

Description

technical field [0001] The invention belongs to the technical field of rubber materials, and in particular relates to a preparation method of a flex-resistant transmission belt rubber emulsion. Background technique [0002] Nitrile rubber is produced by emulsion polymerization of butadiene and acrylonitrile. Nitrile rubber is mainly produced by low-temperature emulsion polymerization. It has excellent oil resistance, high wear resistance, good heat resistance and strong adhesion. . Its disadvantages are poor low temperature resistance, poor ozone resistance, poor electrical properties, and slightly lower elasticity. A synthetic rubber produced by the copolymerization of butadiene and acrylonitrile. It is a synthetic rubber with good oil resistance (especially alkane oil) and aging resistance. There are five types of acrylonitrile content (%) in nitrile rubber: 42-46, 36-41, 31-35, 25-30, and 18-24. The more acrylonitrile content, the better the oil resistance, but the co...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F236/12C08F2/26C08L9/02C08K3/06C08K3/04C08K3/36
Inventor 姜鸿杰程涛木
Owner QINGDAO ZHONGTIAN XINDA BIOTECH R & D
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