Continuous fiber reinforced polypropylene sandwich plate and preparation method thereof

A continuous fiber and polypropylene technology, applied in the field of continuous fiber reinforced polypropylene sandwich panels and their preparation, can solve the problems of poor product surface quality, difficult control of the production process, long production cycle, etc., and achieves easy processing and strength in all directions. Consistent, short cycle time results

Inactive Publication Date: 2014-07-16
LIAONING LIAOJIE SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, each has its own disadvantages. The disadvantage of dry molding is that the production cycle is long. The disadvantage of wet molding is that the surface quality of the product is poor and the production process is difficult to control, which restricts its development.

Method used

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  • Continuous fiber reinforced polypropylene sandwich plate and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0044] A continuous glass fiber reinforced polypropylene aluminum honeycomb panel, comprising an upper prepreg layer 4, an upper non-woven fabric layer 5, an upper adhesive film material 6, a honeycomb core material layer 1, and a lower adhesive film material 7 from top to bottom , the lower non-woven fabric layer 3, the prepreg layer 5, and the adjacent layers are connected to each other by hot pressing.

[0045] Among them, the thickness of the upper or lower prepreg layer is 1.5mm, the thickness of the upper or lower non-woven fabric layer is 0.7mm, the thickness of the upper or lower adhesive film material is 0.3mm, and the thickness of the honeycomb core material is 15mm.

[0046] The preparation method of the above-mentioned continuous fiber reinforced polypropylene sandwich panel is as follows: (1) adding 50 parts by weight of homopolypropylene into the extruder, extruding the film through the staggered double extrusion dies, adding 50 parts by weight Parts of continuou...

Embodiment 2

[0054] A continuous glass fiber reinforced polypropylene aluminum honeycomb panel, comprising an upper prepreg layer 4, an upper non-woven fabric layer 5, an upper adhesive film material 6, a honeycomb core material layer 1, and a lower adhesive film material 7 from top to bottom , the lower non-woven fabric layer 3, the prepreg layer 5, and the adjacent layers are connected to each other by hot pressing.

[0055] Among them, the thickness of the upper or lower prepreg layer is 2mm, the thickness of the upper or lower non-woven fabric layer is 0.8mm, the thickness of the upper or lower adhesive film material is 0.33mm, and the thickness of the honeycomb core material is 15mm.

[0056] The preparation method of the above-mentioned continuous fiber reinforced polypropylene sandwich panel is as follows: (1) adding 45 parts by weight of homopolypropylene into the extruder, extruding the film through the staggered double extrusion dies, adding 55 parts by weight Parts of continuous...

Embodiment 3

[0064] A continuous glass fiber reinforced polypropylene aluminum honeycomb panel, comprising an upper prepreg layer 4, an upper non-woven fabric layer 5, an upper adhesive film material 6, a honeycomb core material layer 1, and a lower adhesive film material 7 from top to bottom , the lower non-woven fabric layer 3, the prepreg layer 5, and the adjacent layers are connected to each other by hot pressing.

[0065] Among them, the thickness of the upper or lower prepreg layer is 3mm, the thickness of the upper or lower non-woven fabric layer is 0.9mm, the thickness of the upper or lower adhesive film material is 0.36mm, and the thickness of the honeycomb core material is 15mm.

[0066] The preparation method of the above-mentioned continuous fiber reinforced polypropylene sandwich panel is as follows: (1) adding 45 parts by weight of homopolypropylene into the extruder, extruding the film through the staggered double extrusion dies, adding 55 parts by weight Parts of continuous...

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Abstract

The invention belongs to the technical field of polymer materials, and relates to a continuous fiber reinforced polypropylene sandwich plate and a preparation method thereof. The sandwich plate sequentially comprises an upper prepreg layer, an upper nonwoven fabric layer, an upper glue film material, a honeycomb core material layer, a lower glue film material, a lower nonwoven fabric layer and a prepreg layer from top to bottom, wherein the adjacent layers are connected through hot pressing. According to the present invention, the prepared continuous fiber reinforced polypropylene sandwich plate has advantages of high strength, high modulus, corrosion resistance, good water resistance, no electric conduction, high dielectric strength, easy processing, easy cleaning, no requirement of special storage conditions and long storage life, provides inertia for a variety of acids and alkalis, has low molding pressure and low molding temperature so as to reduce the mold cost, has a short molding period so as to be repeatedly molded, and has good design flexibility so as to adopt the appropriate fiber type, the appropriate fiber content and the appropriate fiber orientation to meet requirements of specific uses; and 100% of the waste material during production and the final product can be recycled, and the technology belongs to the green product technology.

Description

technical field [0001] The invention belongs to the technical field of polymer materials, and relates to a continuous fiber reinforced polypropylene sandwich panel and a preparation method thereof. Background technique [0002] The honeycomb sandwich panel is composed of two thin and strong panel materials, and a thick and light honeycomb core sandwiched between them. The biggest feature of this type of material is light weight, high specific strength and specific stiffness. Because the honeycomb sandwich panel has excellent electrical insulation and electromagnetic wave transmission performance, as well as outstanding sound insulation, heat insulation and moisture resistance, it has been popularized in microwave communication, shipbuilding industry and construction industry in addition to aerospace and other fields. application. [0003] At present, the honeycomb panels that are widely used are mainly glass cloth honeycomb sandwich structures, but the general forming metho...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B27/02B32B27/04B32B27/08B32B27/32B32B15/085B32B15/20B32B37/10B32B37/06B29C70/34B29C70/54
Inventor 杨桂生康楠
Owner LIAONING LIAOJIE SCI & TECH
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