Light high-strength sandwich composite board and production method

A sandwich composite board, high-strength technology, applied in the direction of chemical instruments and methods, synthetic resin layered products, layered products, etc., can solve the problem of unresolved prepreg tape waste treatment, achieve high recycling costs, improve Effect of Utilization Rate and Broad Market Prospect

Active Publication Date: 2015-04-29
上海昶勤实业有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disposal of prepreg tape waste is sti

Method used

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  • Light high-strength sandwich composite board and production method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] A lightweight high-strength sandwich composite panel, including a seven-layer structure, from top to bottom is polypropylene coated white dot polyester non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fiber and glass fiber composite lightweight Quality mat, waste continuous glass fiber reinforced polypropylene prepreg tape scraps, polypropylene fiber and glass fiber composite lightweight mat, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene coated white dot polyester non-woven fabric.

[0028] Polypropylene coated white dot polyester non-woven fabric with a unit weight of 140g / m 2 , the thickness is 0.2mm, and the unit weight of polypropylene is 70g / m 2 , The unit weight of the white dot polyester non-woven fabric used in the polypropylene coated non-woven fabric is 70g / m 2 The mass content of glass fiber in the continuous glass fiber reinforced polypropylene prepreg tape is 50%, and the thickness ...

Embodiment 2

[0036] A lightweight high-strength sandwich composite panel, including a seven-layer structure, from top to bottom is polypropylene coated white dot polyester non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fiber and glass fiber composite lightweight Quality felt, waste continuous glass fiber reinforced polypropylene prepreg tape scraps, polypropylene fiber and glass fiber composite lightweight mat, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene coated white dot polyester non-woven fabric.

[0037] Polypropylene coated white dot polyester non-woven fabric with a unit weight of 180g / m 2 , the thickness is 0.24mm, and the unit weight of polypropylene is 90g / m 2 , The unit weight of the white dot polyester non-woven fabric used in the polypropylene coated non-woven fabric is 90g / m 2 The mass content of glass fiber in the continuous glass fiber reinforced polypropylene prepreg tape is 60%, and the thicknes...

Embodiment 3

[0045] A lightweight high-strength sandwich composite panel, including a seven-layer structure, from top to bottom is polypropylene coated white dot polyester non-woven fabric, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene fiber and glass fiber composite lightweight Quality mat, waste continuous glass fiber reinforced polypropylene prepreg tape scraps, polypropylene fiber and glass fiber composite lightweight mat, continuous glass fiber reinforced polypropylene prepreg tape, polypropylene coated white dot polyester non-woven fabric.

[0046] Polypropylene coated white dot polyester non-woven fabric with a unit weight of 160g / m 2 , the thickness is 0.22mm, and the unit weight of polypropylene is 80g / m 2 , The unit weight of the white dot polyester non-woven fabric used in the polypropylene coated non-woven fabric is 80g / m 2 ; The mass content of glass fiber in the continuous glass fiber reinforced polypropylene prepreg tape is 55%, and the thickne...

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Abstract

The invention relates to a light high-strength sandwich composite board and a production method thereof. The sandwich composite board is formed by pressing and connecting a laminated non-woven fabric layer, a prepreg tape layer, a light felt layer, a waste prepreg tape scrap layer, a light felt layer, a prepreg tape layer and a laminated non-woven fabric layer which are sequentially arranged from top to bottom. According to the light high-strength sandwich composite board, the high strength of prepreg tapes, the lightness of felt and filling of waste prepreg tapes are used, the waste prepreg tapes are changed into wealth, the utilization rate of the prepreg tapes is increased, resources are saved, and the cost is reduced. The density of the produced board is in a range of 1-1.2 g/cm<3>, the bending strength is higher than 70 MPa, the bending modulus is higher than 6 GPa, and the board can be applied to fields of building, transportation and the like and has the broad market prospect.

Description

technical field [0001] The invention belongs to the field of composite material preparation, and relates to a lightweight high-strength sandwich composite board and a preparation method. Background technique [0002] Prepreg tape is a prepreg sheet material made by impregnating thermoplastic resin into the interior of continuous reinforcing fibers. Its production methods include solution impregnation method and melt impregnation method. No matter which method will produce prepreg tape waste, the waste includes machine head material, machine tail material, edge trimmed scrap, etc. At present, there is no good treatment method for continuous fiber reinforced thermoplastic resin based prepreg tape waste. [0003] The Chinese patent with the application number 201210023736.1 discloses a high-strength lightweight polypropylene composite board and its manufacturing method. The high-strength lightweight polypropylene composite board has a five-layer structure, with continuous glas...

Claims

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Application Information

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IPC IPC(8): B32B27/02B32B27/04B32B17/04B32B17/12B32B27/12B32B37/06B32B37/10B32B38/18
CPCB32B17/04B32B27/04B32B27/12B32B37/06B32B37/10B32B38/18B32B2262/0253B32B2262/0276B32B2262/101
Inventor 杨桂生曹凯解廷秀
Owner 上海昶勤实业有限公司
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