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Thermoplastic rubber composite material containing natural fiber powder and preparation method thereof

A thermoplastic rubber and natural fiber technology, which is applied in the field of thermoplastic rubber composite materials and its preparation, can solve the problems of poor product processing fluidity, low surface finish, and large difference in physical properties, etc., to solve unsatisfactory weather resistance, improve utilization rate, Solve the effect of poor elastic strength

Inactive Publication Date: 2020-08-18
深圳市科思飞科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the two materials of natural fiber powder and artificial rubber have the problems of great difference in physical properties, poor bonding, poor product processing fluidity, and low surface finish.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

preparation example Construction

[0025] A preparation method of a thermoplastic rubber composite material containing natural fiber powder, comprising the following steps:

[0026] S1. Grinding and drying: Grind straw fiber, wheat straw fiber, coffee husk, coffee grounds, wood fiber or bamboo fiber or recycled and sorted cleaned waste fiber products into 60-150 mesh natural fiber powder, and grind the finished Put the natural fiber powder into the dryer, and dry it for 3-4 hours at a temperature of 75-85 degrees, so that the moisture content of the natural fiber powder is lower than 5%;

[0027] S2. Mixing: Prepare materials according to the mass percentage, put the prepared thermoplastic rubber, natural fiber powder, fusion agent, flow agent, and vulcanizing agent into the mixer for mixing, the mixing temperature does not exceed 95 degrees, and the mixing time is 10- 30 minutes;

[0028] S3. Granulation: Put the fully mixed mixture into the granulator, shape it through the granulator, and cut it into general...

Embodiment

[0031] A thermoplastic rubber composite material containing natural fiber powder, comprising the following raw materials in mass percentage: 62.8% TPR, 30% coffee shell, 6% ethylene-methacrylic acid copolymer, 1.0% saturated fatty acid ester, 0.2% vulcanizing agent DTDM. The melt flow index of TPR is 5.0g / 10min. The particle size of the coffee husk is 90 mesh.

[0032] The above-mentioned preparation method of the thermoplastic rubber composite material containing natural fiber powder comprises the following steps:

[0033] S1. Grinding and drying: Grind the coffee shells into 90-mesh fiber powder, put the ground fiber powder into the dryer, and dry it at 80 degrees for 3 hours, so that the water content of the fiber powder is lower than 5 %;

[0034] S2, mixing: prepare materials according to mass percentage, put prepared thermoplastic rubber (TPR), coffee shell, ethylene-methacrylic acid copolymer, saturated fatty acid ester, vulcanizing agent DTDM into the mixer for mixi...

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PUM

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Abstract

The invention discloses a thermoplastic rubber composite material containing natural fiber powder. The thermoplastic rubber composite material comprises the following raw materials in percentage by mass: 40%-60% of thermoplastic rubber, 20%-51% of natural fiber powder, 3%-8% of a fusion agent, 0.5%-1.5% of a flowing agent and 0.1%-0.5% of a vulcanizing agent. By adopting the thermoplastic rubber composite material containing the natural fiber powder and the preparation method of the thermoplastic rubber composite material, the elastic strength of the product is improved, and the weather resistance and the injection flowing property are improved.

Description

technical field [0001] The invention relates to the technical field of natural fiber powder composite materials, in particular to a thermoplastic rubber composite material containing natural fiber powder and a preparation method thereof. Background technique [0002] The natural fiber powder rubber composite material composed of straw fiber, wheat straw fiber, coffee husk, coffee grounds, wood fiber, bamboo fiber and thermoplastic rubber is a new type of composite rubber material that is currently emerging and widely developed. It has the advantages of artificial rubber and natural fiber, and has the advantages of regeneration, low cost, and beautiful appearance. Therefore, natural fiber powder rubber composite materials are widely used in the fields of automobiles, electric tools, ships, and daily necessities. However, the two materials of natural fiber powder and artificial rubber have the problems of great difference in physical properties, poor bonding, poor product proc...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08L101/00C08L99/00C08L23/08C08K5/10C08K5/43C08L75/04
CPCC08L75/04C08L101/00C08L2205/03C08L2205/08C08L2207/24C08L99/00C08L23/0869C08K5/10C08K5/43
Inventor 罗兵
Owner 深圳市科思飞科技有限公司