Test method for dipping performance of glass fibers in resins

A technology of glass fiber and testing method, which is applied in the field of testing the impregnation performance of glass fiber in resin, which can solve the problems of partial subjectivity, inaccurate, effective and objective evaluation of glass fiber impregnation performance, and no quantitative indicators, etc., to achieve accurate Effect of impregnation properties

Active Publication Date: 2015-12-09
JUSHI GRP CO
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, the method of testing the impregnation performance of glass fiber in resin in the pellets produced by the LFT process in the industry is mainly through manual screening of the pellets produced by the LFT process, and by observing the exposed glass fibers and glass fiber tails in the pellets. The impregnation performance of the pellets can be judged subjectively by methods such as the difficulty of opening the pellets, the evaluation method is subjective, and there is no quantitative index, so it is impossible to accurately, effectively and objectively evaluate the impregnation performance of the glass fiber in the pellets.

Method used

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  • Test method for dipping performance of glass fibers in resins
  • Test method for dipping performance of glass fibers in resins
  • Test method for dipping performance of glass fibers in resins

Examples

Experimental program
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Effect test

Embodiment 1

[0037] Raw material: glass fiber: Jushi Group Co., Ltd., EDR17-2400-362J; Jushi Group Co., Ltd., EDR17-2400-362K; thermoplastic: polypropylene (PP), Sinopec, F401; glass fiber content, 50%;

[0038] Test conditions: temperature is 23°C, relative humidity is 50%.

[0039] Test steps:

[0040] (1) Put two groups of glass fiber reinforced PP pellets produced by the LFT process to be tested, with 50% glass fiber content, into a vacuum drying oven, set the temperature at 90°C, and dry for 16 hours;

[0041] (2) Place the pellets produced by the LFT process in an environment with a temperature of 23°C and a relative humidity of 50%, and cool the pellets for 30 minutes so that the pellets are at the same temperature as the environment;

[0042](3) In an environment with a temperature of 23°C and a relative humidity of 50%, use an electronic balance (accurate to 0.001g) to produce pellets by two groups of LFT processes, each group has three parts, each part is 80 grams, and one part ...

Embodiment 2

[0050] Raw material: glass fiber: Jushi Group Co., Ltd., EDR17-2400-362J; thermoplastic: polypropylene (PP), Sinopec, F401: glass fiber content is 30%, 40%, 50%;

[0051] Test conditions: temperature is 23°C, relative humidity is 50%.

[0052] Test steps:

[0053] (1) Put the three groups of glass fiber reinforced PP pellets produced by the LFT process to be tested, with 50% glass fiber content, into a vacuum drying oven, set the temperature at 90°C, and dry for 16 hours;

[0054] (2) Place the pellets produced by the LFT process in an environment with a temperature of 23°C and a relative humidity of 50%, and cool the pellets for 30 minutes so that the pellets are at the same temperature as the environment;

[0055] (3) In an environment with a temperature of 23°C and a relative humidity of 50%, use an electronic balance (accurate to 0.001g) to produce pellets by three groups of LFT technology, each group has three parts, each part is 80 grams, and one part is weighed Put th...

Embodiment 3

[0063] Raw materials: glass fiber: Jushi Group Co., Ltd., EDR17-2400-362J; thermoplastics: polypropylene (PP), Sinopec, F401; nylon 66 (PA66), DuPont, 101L: glass fiber content 50%;

[0064] Test conditions: temperature is 23°C, relative humidity is 50%.

[0065] Test steps:

[0066] (1) Put a group of glass fiber-reinforced PP pellets and a group of glass fiber-reinforced PA66, 50% glass fiber content, produced by the LFT process to be tested into a vacuum drying oven, set the temperature at 90°C, and the time is 16 hours , for drying treatment;

[0067] (2) Place the pellets produced by the LFT process in an environment with a temperature of 23°C and a relative humidity of 50%, and cool the pellets for 30 minutes so that the pellets are at the same temperature as the environment;

[0068] (3) In an environment with a temperature of 23°C and a relative humidity of 50%, use an electronic balance (accurate to 0.001g) to produce pellets by two groups of LFT processes, each gro...

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Abstract

The invention relates to a test method for a dipping performance of glass fibers in resins. The glass fibers are raw materials prepared through an LFT technology. The test method comprises steps: firstly, the temperature is set to be 85-95 DEG C, and glass fibers are subjected to drying processing for 15-17h; secondly, the glass fibers are placed in an environment with a temperature of 18-27 DEG C and with a relative humidity of 40-60% and is cooled for 25-35mins; thirdly, 80.0-80.5g of the glass fibers processed in the first step and the second step are placed a stirrer and stirred in a temperature of 18-27 DEG C and with a relative humidity of 40-60%, the rotating speed is 1000-1400 r / min and the stirring time is 60s; fourthly, all the glass fibers after stirring are taken out and spread on a piece of white paper; fifthly, the glass fibers are taken out and weighed; sixthly, the third step to the fifth steps are repeated, and a plurality of weighing values are obtained; seventh, the plurality of weighing values are subjected to arithmetic average, and the mean value is employed to evaluate the dipping performance of the glass fibers in resins. The method can carry out quantification evaluation of a dipping performance of glass fibers effectively and accurately.

Description

technical field [0001] The invention relates to a method for testing the impregnation performance of glass fiber in resin, especially the test method for the impregnation performance of glass fiber in resin produced by long glass fiber reinforced thermoplastic resin production technology (hereinafter referred to as LFT), which can be used for The impregnation performance of glass fiber in resin was quantitatively evaluated. Background technique [0002] With the advancement of science and technology and the development of society, people pay more and more attention to composite materials with excellent performance. Among them, the LFT process is the most advanced composite material molding process today. It is a rapid composite of glass fiber and thermoplastic resin into pellets. The technology is used to inject the pellets into various shapes of parts. It has the remarkable characteristics of high strength, high fiber content, high toughness, and creep resistance. The gran...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N13/04G01N5/00
Inventor 张志坚费其峰费振宇严忠平钱宇卿
Owner JUSHI GRP CO
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