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Method of preparing glass fibre needled felt reinforced thermoplastic composite material

A technology for reinforcing thermoplastics and glass fibers, applied in chemical instruments and methods, lamination devices, lamination auxiliary operations, etc., can solve the problems of easy decomposition of resin, high viscosity of thermoplastic melt, difficulty of impregnating fibers, etc., and achieve less environmental pollution , The effect of good mechanical properties of materials and low cost of material preparation

Inactive Publication Date: 2007-02-28
DONGHUA UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantages of the above method are: the viscosity of the thermoplastic melt is high, it is difficult to impregnate the fiber, the resin is easily decomposed at high temperature, and the slurry impregnation method is only suitable for the preparation of GMT of chopped fibers.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0015] Prepare water suspension according to the ratio of PVC paste resin to water 5:14, then add ACR-401 accounting for 1% of the mass of PVC paste resin and methyl mercaptide stabilizer accounting for 3% of the mass of PVC paste resin and mix evenly to make water Suspension, impregnating a single-layer continuous glass fiber mat with a glass fiber content of 30% in water suspension, passing through a drying tunnel to remove water, and then hot pressing with double steel belts to make a prepreg tape;

[0016] Cut the prepreg tape into the size and shape of the mold, take three layers and put them into the mold, preheat for 10 minutes, heat press on a flat vulcanizing machine for 25 minutes at a temperature of 190°C and a pressure of 10Mpa to make a PVC / GMT sheet, and demould Obtain the composite material. Finally, the plate is made into a spline according to the standard. The test results are shown in Table 1:

[0017] mechanical properties

Embodiment 2

[0019] Prepare water suspension according to the ratio of PVC paste resin to water 5:10, then add ACR-401 accounting for 4% of the mass of PVC paste resin and tin methyl mercaptide stabilizer accounting for 6% of the mass of PVC paste resin and mix evenly to make water Suspension, impregnating a single-layer continuous glass fiber mat with a glass fiber content of 35% into the water suspension, passing through a drying tunnel to remove water, and then hot-pressing with double steel belts to make a prepreg tape;

[0020] Cut the prepreg tape into the size and shape of the mold, take three layers and put them into the mold, preheat for 10 minutes, heat press on a flat vulcanizing machine for 25 minutes at a temperature of 200°C and a pressure of 10Mpa to make a PVC / GMT sheet, and demould Obtain the composite material.

[0021] Finally, the plate is made into a spline according to the standard. The test results are as follows in Table 2:

[0022] mechanical properties ...

Embodiment 3

[0024] Prepare water suspension according to the ratio of PVC paste resin to water 5:22, then add ACR-401 accounting for 2% of the mass of PVC paste resin and methyl mercaptide stabilizer accounting for 4% of the mass of PVC paste resin, and mix evenly to prepare Water suspension, impregnating a single-layer continuous glass fiber mat with a glass fiber content of 33% into the water suspension, passing through a drying tunnel to remove water, and then hot-pressing with double steel belts to make a prepreg tape;

[0025] Cut the prepreg tape into the size and shape of the mold, put three layers into the mold, preheat for 10 minutes, mold at a temperature of 195°C and a pressure of 10Mpa for 25 minutes, and demould to obtain the composite material.

[0026] Finally, the plate is made into a spline according to the standard. The test results are shown in Table 3 below:

[0027] mechanical properties

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PUM

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Abstract

The invention discloses a reinforced heat plastic composite material of preparing method of glass fiber needled felt, which comprises the following steps: (1) blending polyvinyl chloride paste resin and water with rate at 1: 2-4, adding 1-4% modifier and 3-6% methyl thiol tin stabilizer of PVX paste resin, stirring evenly to prepare water suspension, soaking 30-35% single-layer continuous glass fiber felt in the water suspension, drying, draining, punching to obtain the pre-soak belt, (2) placing the pre-soak belt in the three-layer mould, preheating for 10 min at 190-200 deg.c under 10Mpa for 25min, stripping to obtain the composite material.

Description

technical field [0001] The invention relates to a method for preparing a composite material, in particular to a new method for preparing a continuous glass fiber needle felt reinforced thermoplastic composite material (GMT). Background technique [0002] Glass mat Reinforced thermoplastics (GMT for short) is one of the most active developments of composite materials in the world. This is a composite material with thermoplastic resin as matrix and long glass fiber or continuous glass fiber mat as reinforcement. It is generally made into flakes and supplied as semi-finished products. A variety of GMT materials can be composed of different types of glass mats and thermoplastic resin matrices. GMT has excellent mechanical properties, especially outstanding impact resistance, corrosion resistance, low cost, easy processing, no storage period limit, recyclable and repeated processing, etc., which makes up for the shortcomings of thermosetting composite materials, so it has achie...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B32B37/06B32B37/10B32B38/08B32B5/16
Inventor 余木火宋刚袁象恺
Owner DONGHUA UNIV
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