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A kind of manufacturing method of glass fiber reinforced composite material product

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: 2018-01-09
福建易安特新型建材有限公司
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  • Summary
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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

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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 method for manufacturing a glass fiber reinforced composite material product, comprising: cutting glass fiber mesh cloth; cutting glass fiber bundles, mixing them with polypropylene at 180°C-250°C in twin-screws, and then extruding Mix the molten material on the conveyor belt, and the weight ratio of chopped glass fiber: polypropylene = 20% to 50%: 50% to 80%; sandwich the glass fiber mesh cloth between two layers of the mixed molten material to obtain Mold blank: the conveyor belt transports the mold blank to the heat preservation section, and heats it at a temperature of 150°C to 200°C for 1‑2min for pre-combination; clamps the mold blank and puts it into the mold for molding to obtain the product. The invention solves the problem of poor impact resistance of the composite material product during use, and reduces the risk of cracking of the composite material product after being damaged by impact.

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 Patents(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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