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Continuous fiber reinforced composite materials, its production method and special equipment therefor

A reinforced composite material and continuous fiber technology, which is applied in the field of glass fiber reinforced thermoplastic composite materials, can solve the problems of easy warpage, complex product structure, high cost, etc., and achieve the goal of improving mechanical properties, surface gloss and adhesion Effect

Active Publication Date: 2006-09-06
JIANGSU QIYI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This method is still difficult to solve the problems of effective dispersion of glass fiber and unevenness of resin and glass fiber; in addition, this method has low production efficiency, is difficult to achieve large-scale production, and cannot meet the requirements of industrialization
[0005] To sum up, the current domestic continuous fiber reinforced composite materials have defects such as effective dispersion of glass fibers and uneven resin and glass fibers, especially when the product structure is complex and the size is large, it is particularly prone to warpage and other problems
At the same time, there are still problems such as high production efficiency and low cost, which are difficult to meet the requirements of industrialization

Method used

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  • Continuous fiber reinforced composite materials, its production method and special equipment therefor
  • Continuous fiber reinforced composite materials, its production method and special equipment therefor
  • Continuous fiber reinforced composite materials, its production method and special equipment therefor

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0032] The continuous fiber reinforced composite material prepared according to the following raw material weight (kg,

[0033] Polypropylene resin 50

[0034] impregnated fiberglass 47

[0035] 3,5-di-tert-butyl-4-hydroxyphenylpropionate octadecanyl 1

[0036] 2-Hydroxy-4-n-octyloxybenzophenone 0.5

[0037] Di(1,2,2,6,6-pentylmethyl-4-piperidinyl) sebacate 0.5

[0038] Magnesium Stearate 1.

[0039]First, use electronic scales and platform scales to weigh the required raw materials according to the formula ratio, and add various raw materials except the soaked glass fiber to a low-speed mixer with a volume of 100L, and stir to make them evenly mixed and dispersed. The compounding time is determined according to the amount of compounding materials, about 3-5Min, and the compounding temperature is at room temperature. Finally, put the compounded materials into the hopper of the TE-65 twin-screw extruder. Start the extrusion unit to melt and knead the compounded materials. ...

Embodiment 2

[0048] raw material

[0049] project

[0050] The special cross slit die head for the production of the above products such as figure 2 and 3 As shown, the die head 2 has two feed ports, namely the resin feed port 3 and the fiber feed port 5. The resin feed port is designed with a multi-branch melt flow channel 1, and the flow channel design is symmetrical about the center line of the die head. , the resin and fiber infiltration flow channel 6 adopts a serpentine design and bends along a certain slope. There are respectively the highest point and the lowest point from the feed port 5 to the discharge port 4, and the highest point that the fiber reaches first is lower than the fiber outlet. The height of the highest point, that is, the height of the highest point of the bend decreases in turn, where h 2 = h 3 , h 4 = h 5 , h 3 > h 4 , h 1 > h 6 .

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Abstract

The invention relates to a glass fiberreinforced thermoplastic composite and a continuous fiber-reinforced composite, which are prepared with the following raw materials percentagewise by weight: 35-60 % of resin, 35-60 % of dip treated glass fiber and 0.5-5 % of auxiliary agent. The invention adopts resin and dip treated glass fiber as main raw materials, mixtures of antioxidant, ultraviolet absorbent and light-stability agent as main auxiliary agents, with logical formulations, eliminates the damage to glass fibrous surface caused by twin-screw with continuous fiber-reinforced composite producted by this manufacturing technique, improves product lustrous surface, binding properties between fiberglass and resins by a treatment for glass fibrous surface and mechanical properties of products, protects the materials for long periods from destruction because of addition of various stabilizing agents, and solves the limitation that general materials can not be used for a long time in extreme conditions such as high temperature, high humidity, radiation and so on.

Description

Technical field: [0001] The present invention relates to glass fiber reinforced thermoplastic composite material, and also relates to production method and production equipment. Background technique: [0002] Glass fiber reinforced thermoplastics (referred to as thermoplastic glass fiber reinforced plastics, GRTP), now accounts for more than 1 / 4 of the total output of glass fiber reinforced plastics in the world, and has been growing steadily recently. According to data reports, in the past few years, the average annual growth rate of the GRTP market has been 5 % ~ 6%, the growth rate exceeds that of thermosetting plastics. The continuous fiber reinforced thermoplastic (LFT or LFRT) material is one of the fastest growing materials in the composites market today, with an annual growth rate of 30% in the past 10 years. In 2002, the consumption amounted to 70,000 tons, and the current output has exceeded GMT (glass fiber mat reinforced thermoplastic sheet). [0003] There are...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C08J5/08C08L23/12C08L23/06C08L77/00C08K7/14C08K5/524C08K5/07C08K5/3475
Inventor 李杰包柏青
Owner JIANGSU QIYI TECH
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