A kind of low VOC natural fiber composite material, preparation method and application thereof

A natural fiber and composite material technology, applied in the field of fiber composite materials, can solve the problems of weakened VOC adsorption capacity, endangering the health of people in the car, and increasing production costs, so as to reduce VOC release, improve interface bonding, and low cost Effect

Active Publication Date: 2018-10-26
CHANGCHUN BOCHAO AUTOMOTIVE PARTS CO LTD
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Problems solved by technology

Composite materials made of these two raw materials are also increasingly used in the automotive field. However, the main problem with the composite materials made of these two raw materials is: in the process of use, the natural fiber polypropylene composite material reaches the After a certain temperature, natural fibers and polypropylene will release volatile organic compounds (volatile organic compounds, VOC), among which the more harmful ones are benzene, acetone, toluene, ethylbenzene, xylene, etc., which will seriously endanger the occupants of the car health
However, the existing preparation schemes have the following defects: scheme 1, there is a possibility of secondary release after the adsorbent reaches the adsorption saturation state, and the adsorption capacity of the adsorbent after reaching the saturation state is also weakened; scheme 2, after forming Adding additives such as fillers, tougheners, odor absorbers, antioxidants, lubricants and light stabilizers in the process increases the production cost of the product

Method used

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  • A kind of low VOC natural fiber composite material, preparation method and application thereof

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preparation example Construction

[0020] The invention provides a kind of preparation method of low-VOC natural fiber composite material, described method comprises following process step:

[0021] Step S1, spraying the VOC capture agent on the mixed fibers of the opened natural fibers and polypropylene fibers.

[0022] In this step, a predetermined proportion of natural fibers and polypropylene fibers are first mixed to form mixed fibers of natural fibers and polypropylene fibers, and the mixed fibers of natural fibers and polypropylene fibers are opened, and then after opening Spray VOC capture agent on the mixed fiber of natural fiber and polypropylene fiber.

[0023] In the present invention, the natural fiber adopted can be one or more mixtures of hemp, jute, flax, ramie, kenaf, cotton, kapok fiber and sisal fiber. The VOC trapping agent used can be one or more of the following: polyvinyl alcohol solution and urea solution, etc. The polyvinyl alcohol solution is prepared by stirring polyvinyl alcohol an...

no. 1 approach

[0033]Take 50g of untreated natural fibers and 50g of polypropylene fibers, open, card, and needle-punching processes to make fiber mats, and then prepare composite materials through hot-pressing processes.

no. 2 approach

[0035] Take 1g of polyvinyl alcohol and 9ml of water into a mechanical stirrer, and stir at 400r / min at 90°C for 1h.

[0036] Take 50g of natural fiber and 50g of polypropylene fiber, mix and open the two fibers, spray the prepared polyvinyl alcohol solution on the opened mixed fiber, comb and needle punch to make a fiber mat, and then heat press process to prepare composite materials.

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Abstract

The invention discloses a low-VOC natural fiber composite material, a preparation method and an application thereof. In the method, a VOC capture agent is sprayed into a mixed fiber of natural fiber and polypropylene after opening; the sprayed natural fiber The mixed fiber of fiber and polypropylene is processed into a fiber mat through a carding and needle-punching process; and the fiber mat is subjected to a heat-pressing process to prepare the low-VOC natural fiber composite material. The invention reduces the release amount of VOC of the natural fiber composite material by adding a VOC capture agent in the preparation process of the natural fiber composite material, and at the same time greatly improves the mechanical properties of the natural fiber composite material.

Description

technical field [0001] The invention relates to a fiber composite material, in particular to a low-VOC natural fiber composite material, a preparation method and an application thereof. Background technique [0002] Natural fiber composites are more and more used in the field of automotive interiors because of their wide range of sources, low cost, and environmental friendliness. In recent years, due to the rapid development of polypropylene material engineering modification technology, the application of polypropylene materials in household and automobile fields has become more and more extensive. Composite materials made of these two raw materials are also increasingly used in the automotive field. However, the main problem with the composite materials made of these two raw materials is: in the process of use, the natural fiber polypropylene composite material reaches the After a certain temperature, natural fibers and polypropylene will release volatile organic compounds...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08J5/00C08L97/02C08L23/12
Inventor 王春红刘胜凯潘国立于化锋
Owner CHANGCHUN BOCHAO AUTOMOTIVE PARTS CO LTD
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