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Lightweight and environment-friendly type fibrilia composite plate and preparation method thereof

An environmentally friendly technology of hemp fiber, which is applied in the field of lightweight and environmentally friendly hemp fiber composite board and its preparation, can solve the problems of difficult to remove odor, heavy quality, dampness, and mildew, etc., to improve tensile strength and reduce density , the effect of increasing strength

Active Publication Date: 2012-07-25
JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that benzene is used, which is harmful to the human body and does not meet environmental protection requirements; the second is that it is highly dependent on non-renewable resources, and the source of raw materials is limited; the third is that the density of the prepared composite board is 0.9- 1.1g / cm 3 , the quality is heavy, which increases the weight of the car body during subsequent use, making the fuel consumption high
In order to solve these problems, natural hemp fiberboard came into being, but the process of natural hemp fiber processing is: harvesting→soaking in soft sesame oil→peeling→drying→opening→rolling→cutting. When the hemp fiber composite board is used as an automotive interior part, the odor is difficult to remove, and some additives in the soft sesame oil will gradually be emitted during use, which is harmful to the subsequent use as an automotive interior part. affect
And hemp fiberboard has strong water absorption, as the basic material of automotive interior parts, it is more likely to be damp and moldy

Method used

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  • Lightweight and environment-friendly type fibrilia composite plate and preparation method thereof
  • Lightweight and environment-friendly type fibrilia composite plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] see figure 1 , a kind of lightweight environment-friendly hemp fiber composite board that the present invention relates to, it comprises PE film layer 1 and hemp fiber felt layer 2, and described hemp fiber felt layer 2 is the middle layer, and its upper and lower surfaces are compounded with PE film Layer 1.

[0023] Described hemp fiber felt layer 2 is a needle-punched hemp fiber felt, and its components and their mass ratios are as follows:

[0024] Hemp fiber 55%, PP fiber 45%.

[0025] The preparation method of the lightweight environment-friendly hemp fiber composite board of the present invention is as follows:

[0026] The first step: hemp fiber treatment

[0027] Soak the harvested hemp fiber raw material in caustic soda solution for 20-25 days, pickle and wash with water, and then go through peeling→drying→opening→rolling→cutting to make crude hemp fiber;

[0028] After rinsing→drying→finishing and loosening the crude hemp fiber, it is ready for use;

[0...

Embodiment 2

[0035] The difference between this embodiment and embodiment 1 is that the hemp fiber mat layer 2 is a needle-punched hemp fiber mat, and its components and their mass ratios are as follows: hemp fiber 60%, PP fiber 40%.

[0036] The finished product has no peculiar smell, is light in weight and has a density of 0.31g / cm 3 , the tensile strength reaches 3.72MPa, and the flexural elastic modulus reaches 187.7MPa.

Embodiment 3

[0038] The difference between this embodiment and embodiment 1 is that the hemp fiber felt layer 2 is a needle-punched hemp fiber felt, and its components and their mass ratios are as follows: hemp fiber 65%, PP fiber 35%.

[0039] The finished product has no peculiar smell, is light in weight and has a density of 0.36g / cm 3 , the tensile strength reaches 3.68MPa, and the flexural modulus reaches 189.7MPa.

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Abstract

The invention relates to a lightweight and environment-friendly type fibrilia composite plate and a preparation method thereof, belonging to the technical field of interior ornaments for automobile decoration. The composite plate comprises PE (polyethylene) film layers (1) and a fibrilia mat layer (2), wherein the fibrilia mat layer (2) is an intermediate layer, and the PE film layers (1) are compounded on the upper surface and lower surface of the fibrilia mat layer (2); and the fibrilia mat layer (2) is a needle-punched fibrilia mat, comprises 55-65% by weight of fibrilia and 35-45% by weight of PP (polypropylene) fiber, and is formed by mixing, forming a net and performing needle-punching. The method comprises the following steps of: (1) fibrilia processing: soaking the harvested fibrilia raw material in a hydrogen peroxide solution for 20-25 days, then washing with water, and further sequentially performing peeling, airing, opening, coiling and cutting off so as to produce a fibrilia crude product; and (2) performing rinsing, drying and fine opening on the fibrilia crude product for later use. The prepared composite plate has the advantages of low density, high strength, good stretch-proof effect, low probability of moisture regain and mildew, no toxicity and environmental protection.

Description

technical field [0001] The invention relates to a lightweight and environment-friendly hemp fiber composite board and a preparation method thereof, which are mainly used as interior parts of automobiles, such as ceilings, inner panels of trunks, inner door guards and the like. Background technique [0002] With the rapid development of the automotive industry, the quality requirements for automotive interior parts are also getting higher and higher. The quality of automotive interior parts depends critically on their composite substrates. In the past, the composite substrate of automotive interior parts used PU board or PP wood powder board. The disadvantage is that benzene is used, which is harmful to the human body and does not meet environmental protection requirements; the second is that it is highly dependent on non-renewable resources, and the source of raw materials is limited; the third is that the density of the prepared composite board is 0.9- 1.1g / cm 3 , the qu...

Claims

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Application Information

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IPC IPC(8): B32B9/02B32B27/12B32B27/32B32B37/06B32B37/10D04H1/425D04H1/4291D04H1/4382D04H1/46
Inventor 庄鸣董务好
Owner JIANGYIN YANLI AUTOMOBILE DECORATIVE PARTS
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