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Manufacturing method for glass fiber reinforced composite products

A technology for reinforcing composite materials and glass fibers, which is applied in the production field of glass fiber reinforced composite materials, can solve the problems of short length of reinforced glass fibers, broken composite products, poor impact resistance, etc., and achieves beautiful appearance and impact resistance. High strength and energy saving effect

Active Publication Date: 2016-01-27
福建易安特新型建材有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] The length of glass fibers in the reinforcing phase in the existing chopped glass fiber reinforced polypropylene composite material is too short and the continuity is poor, which makes the impact resistance of the composite product poor during use, and the composite product is prone to damage after impact damage. risk of fragmentation

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0018] A method for manufacturing a glass fiber reinforced composite product, comprising the following steps:

[0019] (1) Cut the glass fiber mesh cloth to 80%-95% of the product size; the specification of the glass fiber mesh cloth is 50g / m 2 ~500g / m 2 If the weight per unit area of ​​the glass fiber mesh is too low, the reinforcement effect of the product will not be obvious, and if it is too high, it will be difficult for polypropylene to infiltrate the glass fiber mesh.

[0020] (in embodiment 1,2,3,4, the size of glass fiber mesh cloth is respectively cut to 80%, 85%, 90%, 95% of the product size to be processed, and the specification of glass fiber mesh cloth is respectively 50g / m 2 , 150g / m 2 、400g / m 2 , 500g / m 2 )

[0021] (2) Using the LFT-D process, cut the glass fiber bundles into chopped glass fibers, and mix them evenly with polypropylene in a twin-screw at 180°C-250°C, and then extrude the mixed molten material onto the conveyor belt, and the weight ratio...

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Abstract

The invention provides a manufacturing method for glass fiber reinforced composite products. The manufacturing method for the glass fiber reinforced composite products includes the steps that a fiberglass mesh is cut; a fiberglass bundle is cut off and is evenly mixed with polypropylene in a twin screw at the temperature of 180-250 DEG C, and then the mixed melt is extruded onto a conveyor belt, wherein the mixed melt includes, by weight, 20%-50% of chopped fiberglass and 50%-80% of polypropylene; the fiberglass mesh is clamped between the two layers of mixed melt, so that a die blank is obtained; the conveyor belt conveys the die blank to the heat preserving section, and the die blank is subjected to pre-combination after being kept at the temperature of 150-200 DEG C for 1-2 min; and the die blank is clamped and placed in a die for compression molding, and then the glass fiber reinforced composite products are obtained. According to the manufacturing method, the problem that composite products are poor in impact resistance in the using process is solved, and the risk that the composite products are cracked after being impacted is reduced.

Description

technical field [0001] The invention specifically relates to a method for manufacturing a glass fiber reinforced composite material product. Background technique [0002] The length of glass fibers in the reinforcing phase in the existing chopped glass fiber reinforced polypropylene composite material is too short and the continuity is poor, which makes the impact resistance of the composite product poor during use, and the composite product is prone to damage after impact damage. Risk of splintering. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for manufacturing a glass fiber reinforced composite material product. [0004] The present invention is achieved like this: a kind of manufacturing method of glass fiber reinforced composite material product, comprises the following steps: [0005] (1) Cut the glass fiber mesh cloth to 80%-95% of the product size; [0006] (2) Cut the glass fiber bundles i...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B29C43/02B29C43/18B29C43/32
Inventor 陈智明蔡秋红薛同妹刘鹏辉伊良文
Owner 福建易安特新型建材有限公司
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