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Production method for maleic anhydride grafted regenerated natural rubber powder

A natural rubber and maleic anhydride grafting technology, applied in the field of graft modification of polymer materials, can solve the problems of high energy consumption, complex process and high investment, and achieve the advantages of improving reaction speed, strong penetration and reducing work intensity. Effect

Inactive Publication Date: 2019-01-08
LUOYANG HEMENG TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method consumes a large amount of acid, alkali, acetone, and deionized water, and also requires ball mill processing, which is complex in process, high in investment, and high in energy consumption.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0024] 1. The preparation equipment and facilities are as follows: (1) 10-liter experimental high-speed mixer; (2) 10-liter experimental electric heating multifunctional rubber and plastic processing equipment (air-cooled microwave generator power: 2000 watts); (3) industrial Nitrogen (99%).

[0025] 2. Weigh the following components by weight: (1) 40 mesh waste natural rubber powder: 3000 grams; (2) Maleic anhydride (99.5%): 90 grams; (3) Dimethyl phthalate (99% ): 110 grams; (4) Dicumyl peroxide DCP (98%): 2.0 grams.

[0026] 3. Blend the above-mentioned maleic anhydride, additives, and waste natural rubber powder in a 10-liter experimental high-speed mixer for 2-5 minutes, so that the material temperature is not higher than 50°C.

[0027] 4. Add the mixed maleic anhydride, additives, and waste natural rubber powder mixture into 10 liters of experimental electric heating multifunctional rubber and plastic processing equipment, open the nitrogen protection valve, and feed ni...

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PUM

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Abstract

The invention discloses a production method for maleic anhydride grafted regenerated natural rubber powder. The method comprises the following steps: mixing maleic anhydride, an auxiliary agent and waste natural rubber powder uniformly in a high speed mixer; then feeding the mixture into a multifunctional rubber and plastic processing device, wherein under the action of microwaves, the waste natural rubber powder breaks in chain and is regenerated, and a grafting reaction is performed on maleic anhydride and the natural rubber powder to prepare the maleic anhydride grafted regenerated naturalrubber powder. The production method avoids self-polymerization of a grafted monomer, decomposition of a polymer and generation of volatile organic gas in a high-temperature condition, so that the environment is protected favorably, and in addition, the performance of the material is improved.

Description

technical field [0001] The invention relates to a production method of maleic anhydride grafted regenerated natural rubber powder, belonging to the technical field of graft modification of polymer materials. Background technique [0002] Non-polar polymers are poorly compatible with other materials, such as polar polymers, inorganic fillers, etc., making it impossible to prepare useful blends. The addition of pre-made or in-situ compatibilizers enables otherwise incompatible polymers to form blends with unique properties not found in either component. [0003] So far, maleic anhydride grafted polymers are the most important functionalized materials due to their cheapness, high activity, and good processability, improving the interfacial cohesion between the dispersed and continuous phases in blends, and it is important in polymerization There are a wide range of applications in polymer blends, polymer / inorganic fillers, polymer / organic fibers, composite reinforcements and b...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08F279/00C08F222/06C08J11/10
CPCC08F279/00C08J11/10C08F222/06Y02W30/62
Inventor 李绍通
Owner LUOYANG HEMENG TECH CO LTD