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Method for reducing odor of hemp fiber composite material and improving strength of hemp fiber composite material

A composite material and hemp fiber technology, applied in fiber treatment, plant fiber, superstructure sub-assembly, etc., can solve the problems of poor strength, easy water absorption, bad smell, etc., achieve high strength, reduce odor, and avoid weight gain Effect

Inactive Publication Date: 2019-06-07
SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problems of poor smell, easy water absorption and mildew, and poor strength in the above-mentioned prior art, the present invention aims to provide a method for reducing the smell of the hemp fiber composite material and improving its strength

Method used

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  • Method for reducing odor of hemp fiber composite material and improving strength of hemp fiber composite material
  • Method for reducing odor of hemp fiber composite material and improving strength of hemp fiber composite material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] The hydrophobic agent and water are formulated into an aqueous solution according to the ratio of 1:100.

[0021] 10-20cm chopped natural hemp fibers are soaked in the aqueous solution for 10 minutes until the hemp fibers are completely soaked in the aqueous solution, and the soaked hemp fibers are dehydrated with a centrifuge to control the moisture content of the hemp fibers at about 50%, and then put The dehydrated hemp fiber is dried to control the moisture content at about 10% to obtain the modified hemp fiber.

[0022] The modified hemp fiber and the 10-20cm chopped polypropylene fiber are mixed and processed to form the modified hemp fiber composite material.

[0023] A total of five batches of modified hemp fiber composite materials were obtained, and the corresponding odor verification data are shown in Table 1 below:

[0024] Table 1

[0025]

[0026] Apparently, the modified hemp fiber composite according to the invention has significantly improved low o...

Embodiment 2

[0032] Mix the water-repellent agent and water according to the ratio of 1:50 to make an aqueous solution.

[0033] The chopped natural hemp fiber is soaked in the aqueous solution for 20 minutes until the hemp fiber is completely soaked in the aqueous solution, and the soaked hemp fiber is dehydrated with a centrifuge to control the moisture content of the hemp fiber at about 50%, and then the dehydrated hemp fiber is The hemp fiber is dried, and the moisture content is controlled at about 10% to obtain the modified hemp fiber.

[0034] The modified hemp fiber and the chopped polypropylene fiber are mixed and processed to form a modified hemp fiber composite material.

Embodiment 3

[0036] The chopped natural hemp fiber and the chopped polypropylene fiber are mixed and processed to form the hemp fiber composite material.

[0037] The hydrophobic agent and water are formulated into an aqueous solution according to the ratio of 1:100.

[0038] Use the aqueous solution to spray the hemp fiber composite material to control the moisture content of the hemp fiber composite material to about 50%, and then dry the hemp fiber composite material to control the moisture content of the hemp fiber composite material below 5% to obtain modified hemp fiber composite material. fiber composites.

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Abstract

The invention provides a method for reducing the odor of a hemp fiber composite material and improving the strength of the hemp fiber composite material. According to the method, short cut hemp fibersare subjected to hydrophobic treatment to obtain the modified hemp fiber composite material. By means of the method, not only can the odor of the hemp fiber composite material be reduced, but also the hemp fiber composite material can be water-proof and mildew-proof and have higher strength.

Description

technical field [0001] The present invention relates to composite materials, and more particularly to a method for reducing the odor and increasing the strength of hemp fiber composite materials. Background technique [0002] As a lightweight material, hemp fiber composites have many applications in the automotive field, but the wet odor of conventional hemp fiber composites is very bad. The reason is that hemp fiber, as a natural fiber material, produces a characteristic Musty substances, this musty smell cannot be recognized under dry conditions, and it will have a very strong musty smell when it encounters water. Two of the odor tests of automotive interior parts are under wet conditions. Musty smell is the main deduction item in the odor test, so the test results will be very poor; in addition, conventional hemp fiber composite materials are very easy to absorb water and become moldy. The strength of conventional hemp fiber composites is also an issue. Contents of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): D06M11/00D06M13/00D06M15/00B60R13/02D06M101/06
Inventor 师杰董务好王茜孙洁王力勇
Owner SHANGHAIK YANFENG JINQIAO AUTOMOTIVE TRIM SYSTEMS CO LTD
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