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Continuous fiber-reinforced flame-retardant PP (polypropylene) board and preparation method thereof

A continuous fiber and polypropylene technology, which is applied in the field of continuous fiber reinforced polypropylene flame retardant sheet and its preparation, can solve the problems of continuous fiber reinforced thermoplastic composite material being inflammable, and achieve good flame retardant effect and reduce manufacturing cost.

Inactive Publication Date: 2015-05-13
NINGBO HUAYE MATERIAL TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is to provide a continuous fiber reinforced polypropylene flame retardant sheet and its preparation method. The sheet not only has excellent mechanical properties, but also solves the shortcoming of continuous fiber reinforced thermoplastic composite materials being flammable

Method used

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  • Continuous fiber-reinforced flame-retardant PP (polypropylene) board and preparation method thereof
  • Continuous fiber-reinforced flame-retardant PP (polypropylene) board and preparation method thereof
  • Continuous fiber-reinforced flame-retardant PP (polypropylene) board and preparation method thereof

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Experimental program
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Effect test

Embodiment 1

[0029] (1) Manufacturing process of flame retardant surface material: resin modification→extrusion→winding→polypropylene flame retardant film

[0030] Such as image 3 As shown, modify polypropylene, add 5% maleic anhydride grafted PP and 20% phosphorus nitrogen silicon system composite flame retardant and mix to a uniform state, and use cast film equipment to make a film with a thickness of 0.1mm.

[0031] (2) The manufacturing process of the continuous fiber reinforced layer: resin modification → extrusion impregnation of continuous glass fiber → continuous fiber reinforced polypropylene unidirectional prepreg tape → continuous fiber reinforced unidirectional prepreg tape multi-layer cross composite → continuous fiber reinforced layer

[0032] Such as Figure 4 As shown, the polypropylene is modified by adding 8% maleic anhydride grafted PP, heated and melted by the extruder to extrude onto the stretched continuous glass fiber, and fully impregnated through the impregnation...

Embodiment 2

[0040] (1) Manufacturing process of flame retardant surface material: resin modification→extrusion→winding→polypropylene flame retardant film

[0041] Such as image 3 As shown, modify polypropylene, add 8% maleic anhydride grafted PP and 30% phosphorus nitrogen silicon system composite flame retardant and mix to a uniform state, and use cast film equipment to make a 0.3mm film.

[0042] (2) The manufacturing process of the continuous fiber reinforced layer: resin modification → extrusion impregnation of continuous glass fiber → continuous fiber reinforced polypropylene unidirectional prepreg tape → continuous fiber reinforced unidirectional prepreg tape multi-layer cross composite → continuous fiber reinforced layer

[0043] Such as Figure 4 As shown, the polypropylene is modified by adding 10% maleic anhydride grafted PP, heated and melted by the extruder to extrude onto the stretched continuous glass fiber, and fully impregnated through the impregnation mold to obtain con...

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Abstract

The invention relates to a continuous fiber-reinforced flame-retardant PP (polypropylene) board and a preparation method thereof. The board consists of a flame-retardant surface layer, a continuous fiber-reinforced layer and a flame-retardant core layer. The preparation method comprises steps as follows: (1) preparing flame-retardant surface layer materials; (2) preparing continuous fiber-reinforced layer materials; (3) preparing a flame-retardant core layer material; (4) sequentially laying one flame-retardant surface layer material, one continuous fiber-reinforced layer material, the flame-retardant core layer material, the other continuous fiber-reinforced layer material and the other flame-retardant surface layer material, and performing heating, pressurizing and cooling molding through a double-steel-belt press to obtain the continuous fiber-reinforced flame-retardant PP board. The board has excellent mechanical properties and solves the problem that continuous fiber-reinforced thermoplastic composites are inflammable.

Description

technical field [0001] The invention belongs to the field of continuous fiber-reinforced thermoplastic composite materials, in particular to a continuous fiber-reinforced polypropylene flame-retardant plate and a preparation method thereof. Background technique [0002] Continuous fiber reinforced thermoplastic composites (CFRT) have a series of excellent mechanical properties such as high strength, high rigidity, and high toughness. Its promotion and application in the market. Usually, modifying the resin and adding a large amount of flame retardant in a mass percentage of 30%-40% can also achieve the flame retardant effect, but it will greatly limit the content of glass fiber and have a great impact on the interface between the resin and glass fiber. The impact on the mechanical properties of materials is particularly serious. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a continuous fiber reinforced polyp...

Claims

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Application Information

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IPC IPC(8): B32B27/06B32B27/04B32B27/18B32B27/32B32B37/02B32B37/06
CPCB32B27/06B32B27/18B32B27/32B32B37/02B32B37/06B32B2260/046
Inventor 陈子蛟金一平祝颖丹李娟刘东程太品
Owner NINGBO HUAYE MATERIAL TECH
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