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A kind of wood interlayer thermoplastic composite material and preparation method thereof

A composite material and thermoplastic technology, which is applied in the direction of wood layered products, wood processing equipment, wooden veneer joints, etc., can solve the problem of environmental protection not in line with the development trend of the times, poor waterproof and mothproof performance of the wooden floor of the truck, To solve the problems of low performance of wooden building formwork, achieve the effect of high cost performance, good nail holding force, excellent strength and modulus

Active Publication Date: 2017-01-25
SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The regeneration speed of wood is certain, and the large consumption of wood is not in line with the trend of progress and development of the times from the perspective of environmental protection
And among them, the performance of the wooden building formwork is low, the water resistance and mildew resistance are poor, the phenomenon of swelling and delamination occurs after absorbing water, and the number of repeated uses is less (less than 5 times).
The wooden floor of the truck has poor waterproof and mothproof performance, and it cannot be repaired after damage

Method used

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  • A kind of wood interlayer thermoplastic composite material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] The panel material is made of continuous fiber-reinforced polypropylene-based composite material. The core material is wood plywood with a thickness of 18mm. The weight percentage of glass fiber in the panel material is about 50%, and the panel thickness is 2mm.

[0024] The preparation of the upper and lower panels of glass fiber reinforced thermoplastic composite materials: the glass fiber reinforced polypropylene base prepreg tape is laminated according to the mechanical property requirements of the specific application according to 0° / 90° / 0°, and the ratio of 2:1 meets the requirement of The mechanical strength of the building formwork length is higher than that of the width direction, so that the material has a higher utilization rate. Then composite molding is carried out under certain hot-pressing and cold-pressing process conditions, wherein the hot-pressing temperature is 180°C, the hot-pressing pressure is about 3MPa, the hot-pressing time is 10min, the cold-pr...

Embodiment 2

[0027] The panel material is made of continuous fiber-reinforced polypropylene-based composite material, and the core material is wood plywood with a thickness of 25mm. The weight percentage of glass fiber in the panel material is about 55%, and the panel thickness is 3mm.

[0028] The preparation of the upper and lower panels of glass fiber reinforced thermoplastic composite materials: the glass fiber reinforced polypropylene based prepreg tape is laid according to the mechanical performance requirements of the specific application according to 0° / 90° / 0°, and the ratio of 2:1 is in line with It solves the application situation that the mechanical strength in the length direction is higher than that in the width direction, so that the material has a higher utilization rate. Then composite molding is carried out under certain hot-pressing and cold-pressing process conditions, wherein the hot-pressing temperature is 180°C, the hot-pressing pressure is about 3MPa, the hot-pressing...

Embodiment 3

[0033] A kind of preparation method of wooden sandwich thermoplastic composite material, it is characterized in that, the method comprises the following steps:

[0034] (1) Spread the continuous glass fiber evenly, pass through the traction unit and preheat it, then fully impregnate the composite unit with polypropylene molten resin, and then pass through the action of the flattening unit and the winding unit to obtain the continuous glass fiber unidirectional prepreg The weight percentage range of the glass fiber in the prepreg tape is 40%, and the used fiber fineness range is 150Tex.

[0035] (2) Preparation of the upper panel and the lower panel: the glass fiber reinforced polypropylene-based prepreg tape is laminated at 0° / 90° / 0°, hot-pressed and then cold-pressed under the pressure roller and roller pressing device , wherein the hot-pressing temperature is 190°C, the hot-pressing pressure is 2.5MPa, the hot-pressing time is 15min, the cold-pressing pressure is gradually i...

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Abstract

The invention relates to a wood interlayer thermoplastic composite material and a preparing method thereof. The composite material is composed of five layers of materials which are an upper panel, a macromolecular adhesive film, a core material, a macromolecular adhesive film and a lower panel in sequence from top to bottom. Glass fiber reinforcement polypropylene base prepreg tape is laid up according to 0 degree / 90 degrees / 0 degree, firstly pressed in a hot mode, then pressed in a cold mode through a pressure roller and a rolling device, and formed in a composite mode, so that the panel materials are obtained. The macromolecular adhesive films are arranged between the core material and the upper panel, and between the core material and the lower panel, hot-pressing and gluing are carried out at the temperature of 175-190 DEG C, at the beginning stage, air is exhausted for one time every two minutes, and the air is exhausted for three times to obtain the product. Compared with the prior art, the wood interlayer thermoplastic composite material is high in chemical strength, long in service life, waterproof, mothproof, good in wholesomeness, easy to clean and corrosion-resistant.

Description

technical field [0001] The invention relates to a wood-plastic combined composite material, in particular to a wood sandwich thermoplastic composite material and a preparation method thereof. Background technique [0002] With the rapid development of society, the speed of urban construction is also developing rapidly, and the demand for building templates in the construction industry has also increased rapidly. The current building templates are mainly traditional wooden building templates and bamboo building templates, as well as a small number of plastic building templates. At the same time, with the development of the transportation industry, the demand for wood for truck floors is also increasing. [0003] The regeneration speed of wood is certain, and a large amount of consumption of wood is not in line with the trend of progress and development of the times from the perspective of environmental protection. And among them, the performance of the wooden building formw...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B32B21/04B27D1/08C08L23/12C08K7/14C09J123/12
Inventor 李国琴
Owner SHANGHAI GENIUS ADVANCED MATERIAL (GRP) CO LTD
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