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Test method of glass fiber reservation length of glass fiber reinforced hot-moulding composite

A test method and composite material technology are applied in the field of testing the glass fiber retention length in glass fiber reinforced thermoplastic composite materials to achieve the effect of high accuracy, high accuracy and avoiding the influence of human subjective factors.

Inactive Publication Date: 2019-01-08
JUSHI GRP CO
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0006] The present invention aims to solve the problems described above

Method used

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  • Test method of glass fiber reservation length of glass fiber reinforced hot-moulding composite
  • Test method of glass fiber reservation length of glass fiber reinforced hot-moulding composite
  • Test method of glass fiber reservation length of glass fiber reinforced hot-moulding composite

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Experimental program
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Effect test

Embodiment 1

[0064] For glass fiber weight percentage content of 20%, glass fiber density of 2.60g / cm 3 1. For a chopped glass fiber reinforced thermoplastic resin composite material with a single fiber diameter of 10 μm (that is, its theoretical glass fiber length is 1 mm), test its glass fiber retention length:

[0065] Preparation before the test: Prepare the glass fiber reinforced thermoplastic resin composite material to be tested, a polarizing microscope with a projection system, a muffle furnace and a crucible for burning the glass fiber composite material, and a 60mm transparent glass fiber that can disperse and carry the glass fiber Petri dish, ethanol reagent for dispersion;

[0066] Calculation: Calculate the theoretical mass of the above-mentioned glass fiber reinforced thermoplastic composite material required to test 10,000 pieces of the above-mentioned chopped glass fiber composite material as 10mg;

[0067] Resin and additive removal: Weigh 10 mg of the glass fiber reinfor...

Embodiment 2

[0078] For glass fiber weight percentage content of 20%, glass fiber density of 2.60g / cm 3 1. For a long glass fiber reinforced thermoplastic resin composite material with a single fiber diameter of 17 μm (that is, the theoretical length of the glass fiber is 2 mm), test its glass fiber retention length:

[0079]Preparation before the test: Prepare the glass fiber reinforced thermoplastic resin composite material to be tested, a polarizing microscope with a projection system, a muffle furnace and a crucible for burning the glass fiber composite material, and a 60mm transparent glass fiber that can disperse and carry the glass fiber Petri dishes, ethanol reagents for dispersion;

[0080] Calculation: Calculate the theoretical mass of the above-mentioned glass fiber reinforced thermoplastic composite material required to test 10,000 pieces of the above-mentioned chopped glass fiber composite material to be 40 mg;

[0081] Resin and additive removal: Weigh 40 mg of the glass fib...

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Abstract

The invention provides a test method of glass fiber reservation length of a glass fiber reinforced hot-moulding composite. The method comprises the following steps: calculating the theory quality of the glass fiber reinforced hot-moulding composite to be tested when glass fibers in the preset number need to be tested; weighing the glass fiber reinforced hot-moulding composite to be tested and meeting theory quality requirements as test samples, and removing resins and auxiliary agents from the surfaces of the test samples to obtain substances to be treated; performing dispersion treatment on the substances to be treated with dispersion mediums, and performing drying; selecting a plurality of glass fiber regions by a microscope, projecting the glass fiber regions to a screen, and collectingimages; measuring the actual glass fiber reservation length of the images by image analysis software, and according to the measurement results, collecting statistics about the glass fiber reservationlength and the distribution probability in the collected images. The test method mainly adopts an optical microscope-image analyzer method, in combination with a counting principle and a special sample preparation method, the operation is simple, the accuracy is high, and the application scope is broad.

Description

technical field [0001] The invention relates to the technical field of testing the retained length of glass fibers, in particular to a method for testing the retained length of glass fibers in glass fiber reinforced thermoplastic composite materials. Background technique [0002] Glass fiber reinforced thermoplastic resin has the characteristics of low density and high strength. It is a composite material with high cost performance. It has been widely used in industrial fields such as household appliances, building materials, automobiles, and electronic appliances. In thermoplastic composite materials, short glass fiber reinforcement mainly means that the arithmetic average value of glass fiber retention length in the reinforced material is basically within 1mm, the production conditions are relatively low, and the performance of the obtained composite material can be significantly improved. The material is more favored by everyone in the market. However, as the requirement...

Claims

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Application Information

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IPC IPC(8): G01N21/84G01N1/44G01N1/38G01N1/34G01B11/02
CPCG01B11/02G01N1/34G01N1/38G01N1/44G01N21/84G01N2021/8472
Inventor 张志坚张萍章建忠崔峰波冉文华崔丽荣沈林峰袁向静
Owner JUSHI GRP CO
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