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A kind of glass fiber reinforced wood-plastic composite material and preparation method thereof

A technology of wood-plastic composite material and glass fiber, which is applied in the direction of coating, etc., can solve the problems of poor bonding between glass fiber and wood-plastic interface, low recovery rate of waste wood-plastic products, single type of waste plastic, etc., to achieve high process pressure, The effect of high strength and low water absorption

Active Publication Date: 2018-12-28
WUHAN UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The technical problems solved by the present invention are: in view of poor bonding between glass fiber and wood-plastic interface in glass fiber-reinforced wood-plastic composite materials, uneven fiber dispersion, limited fiber length, single types of waste plastics for recycling, and recycling of waste wood-plastic products In order to solve the problem of low efficiency, a long glass fiber reinforced wood-plastic composite material and its preparation method are provided

Method used

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  • A kind of glass fiber reinforced wood-plastic composite material and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0026] The glass fiber reinforced wood-plastic composite material provided in Example 1 is mainly composed of glass fibers, waste plastics, plant fibers, and regulators, and its mass ratio is (5-30): (30-60): (0-15 ): (20-40), the glass fiber adopts plastic-coated glass fiber, and the regulator is PP, PE, PVC, PP-g-MAH, PE-g-MAH, EVA-g-MAH one or more of them.

[0027] The plant fiber is one or more of wood powder, bamboo powder, straw powder, bagasse powder, and rice husk powder, and its mesh number is 40-80 mesh, or it has an aspect ratio of 20-100 of hemp fiber.

[0028] The glass fiber reinforced wood-plastic composite material provided in Example 1 above can be made by the method provided in the following examples.

Embodiment 2

[0030] S1 Glass fiber impregnation process: Add 40 parts of PP, 45 parts of PP wax, and 15 parts of PP-g-MAH into the dipping tank to melt and mix well. The temperature of the dipping tank is controlled at 200-210 °C. The glass fiber bundles were impregnated in a dipping tank, and then rolled, cooled, and cut to obtain plastic-coated glass fibers with a length of 10 mm. Said parts are parts by weight, the same below.

[0031] S2 Mixing powder making process: Add 30 parts of PP, 10 parts of PP-g-MAH, 30 parts of crushed waste plastic mixture, and 15 parts of plant fiber into the internal mixer to mix evenly and granulate. The material is crushed into 10-30 mesh powder with a pulverizer, and the temperature of the internal mixer is controlled between 140-190°C.

[0032] S3 hot press molding process: take 70 parts of powder in S2, 30 parts of plastic-coated glass fiber in S1, mix evenly and lay them in the mold, and first cold press and compact. Then put it into a hot press for...

Embodiment 3

[0034] S1 Glass fiber impregnation process: Add 50 parts of PP, 38 parts of high melting index PP, and 12 parts of PP-g-MAH into the dipping tank to melt and mix well. The temperature of the dipping tank is controlled at 200-210 °C. The glass fiber bundles were impregnated in a dipping tank, and then rolled, cooled, and cut to obtain plastic-coated glass fibers with a length of 20 mm.

[0035]S2 Mixing powder making process: Add 20 parts of PE, 10 parts of PE-g-MAH, 45 parts of crushed waste plastic mixture, and 10 parts of plant fiber into the internal mixer to mix evenly and granulate. Pulverize into 30-50 purpose powder with pulverizer, internal mixer temperature is controlled between 140-190 ℃.

[0036] S3 hot press molding process: Take 80 parts of powder in S2 and 20 parts of plastic-coated glass fiber in S1, mix them evenly and spread them in the mold, and first cold press and compact them. Then put it into a hot press for preheating at 135-180°C, pressurize and exhaus...

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Abstract

The invention relates to a fiberglass reinforced wood-plastic composite material and a preparation method thereof. The fiberglass reinforced wood-plastic composite material is mainly prepared from fiberglass, waste plastics, plant fibers and a regulator, wherein the mass ratio is (5 to 30): (30 to 60): (0 to 15): (20 to 40), the fiberglass adopts the fiberglass coated with plastics, the regulator is one or more of PP, PE, PVC, PP-g-MAH, PE-g-MAH, EVA-g-MAH. The preparation method of the material comprises the following steps: coating the fiberglass, banburying, producing powder, hot pressing, and molding. The fiber coating treatment can effectively solve the interface bonding problem of the fiberglass with wood plastics, so that the strength of a product is improved, the consumption of the waste plastics and wood plastics in the wood plastics is greatly increased, the length of the added fiberglass is not limited due to the hot pressing molding, and the reinforcing effect of the fiber is sufficiently realized.

Description

technical field [0001] The invention relates to a polymer composite material, in particular to a fiber-reinforced wood-plastic composite material and a preparation method thereof. Background technique [0002] At present, the production process of wood-plastic is mainly based on extrusion. Wood-plastic products have poor mechanical properties and can only be used as decorative materials. Using cheap glass fiber reinforced wood-plastic to make it used as a load-bearing structure will have a good development Foreground, but in the extrusion molding process, the fiber is sheared by the screw, the length is shortened to 2mm, and the reinforcement effect cannot be achieved. On the other hand, with the enhancement of human awareness of environmental protection, the recycling of waste plastics has become the focus of attention, but at present there is no domestic manufacturer of wood-plastic composite materials using waste plastics, and the recycling of waste wood-plastic materials...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C08L101/00C08L97/02C08L23/12C08L23/06C08L27/06C08L51/06C08K9/10C08K7/14C08J5/08B29C43/02B29B15/14
CPCB29B15/14B29C43/02C08J5/08C08J2300/00C08J2323/12C08J2327/06C08J2397/02C08K2201/003C08K2201/004C08L23/12C08L27/06C08L97/02C08L101/00C08L2205/025C08L2205/035C08L2205/16C08L2207/20C08L23/06C08L51/06C08K9/10C08K7/14
Inventor 秦岩秦斯文万文彬黄志雄
Owner WUHAN UNIV OF TECH
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