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High-PRI constant-Mooney-viscosity natural rubber and preparation method thereof

A natural rubber, Mooney viscosity technology, applied in the field of high PRI constant Mooney viscosity natural rubber and its preparation, can solve the stability of rubber Mooney viscosity, initial plastic value, plastic retention rate, unfavorable process formulation and product performance stability , batch quality differences of natural raw rubber, etc., to achieve the effects of human and environmental friendliness, easy addition, and high plasticity retention rate

Active Publication Date: 2021-06-04
上海中橡联和科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Due to the local physical and chemical changes of the non-adhesive components and the groups on the rubber molecular chain, the rubber molecular chain will be branched or cross-linked, resulting in changes in the rubber Mooney viscosity, plastic initial value, and plastic retention rate, and it is not heat-resistant. Oxidation is serious, resulting in batch quality differences in natural raw rubber, which is not conducive to the stability of process formula and product performance

Method used

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  • High-PRI constant-Mooney-viscosity natural rubber and preparation method thereof
  • High-PRI constant-Mooney-viscosity natural rubber and preparation method thereof
  • High-PRI constant-Mooney-viscosity natural rubber and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] Crushing the crepe glue, rinsing out impurities, drying, and weighing for later use.

[0028] Weigh the constant viscosity agent hydrazinoethanol according to 5‰ of the weight of the crepe glue, then add it into the dry blender together with the crepe glue and mix for 4 minutes.

[0029] After cooling, briquetting and other processes, natural rubber with constant Mooney viscosity is obtained.

Embodiment 2

[0031] Weigh the whey protein by 3% of the crepe glue weight, and stir in a dry mixer for 3 minutes together with the crepe glue;

[0032] Weigh the constant viscosity agent hydrazinoethanol according to 5‰ of the weight of the crepe glue and spray it into the dry blender, and continue to stir for 4 minutes;

[0033] After cooling, briquetting and other processes, natural rubber with constant Mooney viscosity is obtained.

Embodiment 3

[0035] Crushing the crepe glue, rinsing out impurities, drying, and weighing for later use.

[0036] Weigh the whey protein by 5% of the crepe glue weight, and stir in a dry mixer for 4 minutes together with the crepe glue;

[0037] Spray the constant viscosity agent hydrazinoethanol of 2‰ of the weight of the crepe glue into the dry blender, and continue to stir for 3 minutes;

[0038] After cooling, briquetting and other processes, high PRI constant Mooney viscosity natural rubber is obtained.

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Abstract

The invention discloses high-PRI constant-Mooney-viscosity natural rubber and a preparation method thereof, and belongs to the technical field of natural rubber processing. The high-PRI constant-mMooney-viscosity natural rubber is prepared by adding a certain proportion of whey protein and constant-viscosity agent hydrazinoethanol into crepe rubber, the production method is simple, low in cost and high in efficiency, the PRI of the high-PRI constant-Mooney-viscosity natural rubber reaches 85% or above, the natural rubber has excellent tensile strength and tear strength and stable Mooney viscosity, can be directly mixed with other materials without plastication to prepare high-performance rubber products, can be used for aviation products, military products, high-speed rail vibration reduction and other rubber products with high-strength requirements, and is worthy of wide popularization and application.

Description

technical field [0001] The invention relates to the technical field of natural rubber processing, in particular to a high PRI constant Mooney viscosity natural rubber and a preparation method thereof. Background technique [0002] Natural rubber comes from the rubber tree, and its composition is mainly rubber hydrocarbon (polyisoprene), with a small amount of protein, water, resin acid, sugar and inorganic salt. Natural rubber belongs to crystalline rubber and has self-reinforcing effect, so it has good natural elasticity, high tensile strength, high tear strength, good wear resistance, good cold resistance, good processability, and is superior to most synthetic rubbers in terms of comprehensive performance. Widely used in various rubber products. [0003] With the development of science and technology, aviation, military industry, high-speed rail and other industries have higher and higher requirements for rubber performance. The mechanical properties, product properties,...

Claims

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Application Information

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IPC IPC(8): C08L7/00C08L89/00C08K5/24
CPCC08L7/00C08L2201/08C08L2312/00C08L89/00C08K5/24
Inventor 华红跃
Owner 上海中橡联和科技有限公司
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