CN105938076A - Test method for prepreg resin infiltration degree - Google Patents

Test method for prepreg resin infiltration degree Download PDF

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Publication number
CN105938076A
CN105938076A CN201610392468.9A CN201610392468A CN105938076A CN 105938076 A CN105938076 A CN 105938076A CN 201610392468 A CN201610392468 A CN 201610392468A CN 105938076 A CN105938076 A CN 105938076A
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China
Prior art keywords
prepreg
fabric
sample
test sample
infiltration
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CN105938076B (en
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孙杰
徐辰
陈琰升
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Jiangsu Hengshen Co Ltd
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Jiangsu Hengshen Co Ltd
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N5/00—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid
    • G01N5/02—Analysing materials by weighing, e.g. weighing small particles separated from a gas or liquid by absorbing or adsorbing components of a material and determining change of weight of the adsorbent, e.g. determining moisture content

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  • Physics & Mathematics (AREA)
  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Analytical Chemistry (AREA)
  • Biochemistry (AREA)
  • General Health & Medical Sciences (AREA)
  • General Physics & Mathematics (AREA)
  • Immunology (AREA)
  • Pathology (AREA)
  • Reinforced Plastic Materials (AREA)

Abstract

The invention provides a test method for prepreg resin infiltration degree. The method is mainly for testing the impregnation degree of a vacuum bag molded oven cured prepreg. The method utilizes the capillary water absorption phenomenon occurred during contact of dry fiber and water, and water rises along the capillary between fiber bundles and infiltrates the fiber till reaching a saturated water absorption capacity. The resin infiltrated interfibre capillary channel is closed, capillary action cannot occur to absorb water, so that the water absorption capacity can be utilized to judge the content of dry fiber in the impregnated prepreg, thus testing the impregnation degree of the prepreg.

Description

A kind of prepreg resin infiltration degree method of testing
Technical field
The present invention relates to field of compound material, specially resin infiltration journey during carbon fiber prepreg preparation The method of testing of degree.
Background technology
The cured technique of pre-preg vacuum bag, relative to traditional autoclave prepeg process, can break away from into Limiting and high cost of use of type equipment autoclave size.Make after the cured molding of pre-preg vacuum bag The inside of part and surface quality depend not only on resin formula and mixed with resin technique, also manufacture with prepreg In journey, resin is closely related to the infiltration degree of fiber.At present, resin leaching in the prepreg of domestic and international judgment part The method of profit degree mainly observes the degree of depth of prepreg thickness direction resin infiltration by scanning electron microscope, should Method sampling requirement is higher, can only with the naked eye judge the impregnation degree of depth of resin in image, lacks the mark of science Standard, the data discrete drawn is the biggest, it is impossible to as the testing standard of resin infiltration degree accurately.
Summary of the invention
It is an object of the invention to provide measuring in part impregnation prepreg not by doing that resin infiltrates of a kind of simplicity The mass content of fiber, carrys out the method for testing of calculating section impregnation prepreg infiltration degree, it is possible to realize part The accurate quantitative analysis of resin infiltration degree in impregnation prepreg.
Present invention provide the technical scheme that
A kind of part impregnation prepreg resin infiltration degree method of testing, including:
1) fabric parent and the sampling of prepreg parent: respectively from the both sides of complete width prepreg and fabric and Middle sampling, quantity of sampling quantity is 3 groups, i.e. 3 tissue substance parents, 3 groups of prepreg parents；
2) fabric sample and the sampling of prepreg test sample: difference 2 fabrics of cutting on the fabric parent often organized Sample, the most also 2 prepreg test sample of cutting, altogether 12 samples on the prepreg parent often organized；
3) respectively the bottom of fabric sample and the bottom pressure sensitive adhesive tape of prepreg test sample are pasted, sample double Pressure sensitive adhesive tape is all posted in face, and pasting height is Hmm；
4) respectively all of fabric sample and prepreg test sample are weighed, and average respectively obtain fabric examination Quality a of sample0Quality a with prepreg test samplei；
5) fabric sample is hung on the termination of support, then places a stent within balance；
6) hanging fabric sample in support termination is posted in the water of one end infiltration beaker of pressure sensitive adhesive tape, leaching Entering the degree of depth is H/2mm；
7) after fabric sample fully infiltrates, beaker is removed, then weigh the weight of the fabric sample after infiltration；
8) step 5 is repeated)-step 7), weigh after all of fabric sample is all infiltrated, average and obtain Quality b of the fabric sample after infiltration0；
9) by step 5) in fabric sample change prepreg test sample into, equally repeat step 5)-step 7), Weigh after all of prepreg test sample is all infiltrated, the matter of the prepreg test sample after being infiltrated of averaging Amount bi；
10) fabric moisture rate w is calculated0=b0/a0The fiber quality f=a total with in prepregi*wf, wfFor in advance Fiber quality mark in leaching material, is calculated by the mass ratio of resin and fiber in prepreg manufacture process；
11) the final resin impregnated degree that calculates is
Step 7) in, when fabric or prepreg infiltrate in water when, note the reading of balance, to sky Flat numerical value is not beated and is started to record weight, until the data difference of twice record is less than in 30 seconds 0.0002g, is fully infiltration.
Described beaker is fixed on iron stand.
The medicine have the advantages that the present invention makes full use of the capillary suction effect between dry fibers tow, and Take the sample of suitable size and shape, control the saturated absorbent time of fiber, it is achieved discrete little, operation Easy, the test to prepreg resin infiltration degree that can be online.
Accompanying drawing explanation
Fig. 1 is that the test sample of prepreg infiltration degree of the present invention prepares schematic diagram.
Fig. 2 is the test device schematic diagram of prepreg infiltration degree of the present invention.
Detailed description of the invention
The present invention is described in further detail below in conjunction with the accompanying drawings.
As shown in Figure 1 and Figure 2, a kind of part impregnation prepreg resin infiltration degree method of testing, including:
1, fabric parent and the sampling of prepreg parent: respectively from the both sides of complete width prepreg and fabric (OS, DS) sampling with middle (M), quantity of sampling quantity is 3 groups, i.e. 3 tissue substance parents, 3 groups of prepreg parents, Body size is all 100.0mm × 100.0mm,
2, fabric sample and the sampling of prepreg test sample: 2 fabric examinations of cutting respectively on the fabric parent often organized Sample, the most also 2 prepreg test sample of cutting on the prepreg parent often organized, i.e. 6 fabric sample, 6 Prepreg test sample, altogether 12 samples, the size of test sample is 10.0mm × 30.0mm；
3, pasting bottom all test samples with pressure sensitive adhesive tape, the two-sided pressure sensitive adhesive tape that all must post ensures test Not being impregnated with completely (see Fig. 1) when the bottom of sample contacts with water, pasting height is 10.0mm；
4, respectively all of fabric sample and prepreg test sample are weighed, and average respectively and obtain fabric sample Quality a0Quality a with prepreg test samplei；
5, fabric sample is hung on the termination of support, then places a stent within balance, and reset (see Fig. 2), The termination of support can use iron wire, and sample can hang on iron wire termination；
6, the hanging fabric sample in support termination is posted in the water of one end infiltration beaker of pressure sensitive adhesive tape, immerse The degree of depth is 5mm；Beaker is fixed on iron stand.
7, after fabric sample fully infiltrates, beaker is removed, then weigh the weight of the fabric sample after infiltration；
8, repeat step 5-step 7, weigh after all of fabric sample is all infiltrated, average and infiltrated After quality b of fabric sample0；
9, change the fabric sample in step 5 into prepreg test sample, repeat step 5-step 7 equally, will All of prepreg test sample is weighed after all infiltrating, quality b of the prepreg test sample after being infiltrated of averagingi；
10, fabric moisture rate w is calculated0=b0/a0The fiber quality f=a total with in prepregi*wf, wfFor prepreg Middle fiber quality mark, is calculated by the mass ratio of resin and fiber in prepreg manufacture process；
11, the final resin impregnated degree that calculates isY is this patent needs the prepreg drawn to contain The resin infiltration degree to fiber during leaching.
In step 7, when fabric or prepreg infiltrate in water when, note the reading of balance, Numerical value to balance is not beated and is started to record weight, until the data difference of twice record is less than in 30 seconds 0.0002g, is fully infiltration.

Claims (3)

1. a prepreg resin infiltration degree method of testing, it is characterised in that including:
1) fabric parent and the sampling of prepreg parent: respectively from complete width prepreg and fabric Both sides and middle sampling, quantity of sampling quantity is 3 groups, i.e. 3 tissue substance parents, 3 groups of preimpregnation Material parent；
2) fabric sample and the sampling of prepreg test sample: cutting respectively on the fabric parent often organized 2 fabric sample, the most also 2 prepreg test sample of cutting on the prepreg parent often organized, 12 samples altogether；
3) respectively the bottom of fabric sample and the bottom pressure sensitive adhesive tape of prepreg test sample are pasted, The two-sided of sample all posts pressure sensitive adhesive tape, and pasting height is Hmm；
4) respectively all of fabric sample and prepreg test sample are weighed, and be averaged worth respectively Quality a to fabric sample0Quality a with prepreg test samplei；
5) fabric sample is hung on the termination of support, then places a stent within balance；
6) hanging fabric sample in support termination is posted one end infiltration beaker of pressure sensitive adhesive tape Water in, immersion depth is H/2mm；
7) after fabric sample fully infiltrates, beaker is removed, then weigh the examination of the fabric after infiltration The weight of sample；
8) step 5 is repeated)-step 7), weigh after all of fabric sample is all infiltrated, take Meansigma methods infiltrated after quality b of fabric sample0；
9) by step 5) in fabric sample change prepreg test sample into, equally repeat step 5)-step 7), weigh after all of prepreg test sample is all infiltrated, average and obtain Quality b of the prepreg test sample after infiltrationi；
10) fabric moisture rate w is calculated0=b0/a0The fiber quality total with in prepreg F=ai*wf, wfFor fiber quality mark in prepreg, by prepreg manufacture process The mass ratio of resin and fiber calculates；
11) the final resin impregnated degree that calculates is
A kind of prepreg resin infiltration degree method of testing the most according to claim 1, it is special Levy and be, step 7) in, when fabric or prepreg infiltrate in water when, note sky Flat reading, the numerical value to balance is not beated and is started to record weight, until twice note in 30 seconds The data difference of record, less than 0.0002g, is fully infiltration.
A kind of prepreg resin infiltration degree method of testing the most according to claim 1, it is special Levying and be, described beaker is fixed on iron stand.
CN201610392468.9A 2016-06-02 2016-06-02 A kind of prepreg resin infiltration degree test method Active CN105938076B (en)

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Cited By (8)

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Publication number Priority date Publication date Assignee Title
CN107024407A (en) * 2017-05-04 2017-08-08 绍兴文理学院元培学院 A kind of bicomponent fabric component ratio method of testing
CN107290252A (en) * 2017-06-30 2017-10-24 浙江石金玄武岩纤维股份有限公司 A kind of method for testing fiber wetness energy
CN110672470A (en) * 2018-07-03 2020-01-10 宁德时代新能源科技股份有限公司 Pole piece infiltration testing method and device of secondary battery
CN111537674A (en) * 2020-05-14 2020-08-14 江苏恒神股份有限公司 Method for testing impregnation degree of prepreg
CN113418820A (en) * 2021-07-22 2021-09-21 中航复合材料有限责任公司 Method and device for detecting filament breakage rate of continuous fiber prepreg
CN113447391A (en) * 2021-08-31 2021-09-28 常州市宏发纵横新材料科技股份有限公司 Prepreg resin wettability testing method
US11440285B2 (en) * 2020-05-04 2022-09-13 Textron Innovations Inc. Method of quantifying surface resin
CN115266457A (en) * 2022-07-27 2022-11-01 中复神鹰(上海)科技有限公司 Method for testing impregnation degree of carbon fiber prepreg

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107024407A (en) * 2017-05-04 2017-08-08 绍兴文理学院元培学院 A kind of bicomponent fabric component ratio method of testing
CN107290252A (en) * 2017-06-30 2017-10-24 浙江石金玄武岩纤维股份有限公司 A kind of method for testing fiber wetness energy
CN107290252B (en) * 2017-06-30 2019-10-11 浙江石金玄武岩纤维股份有限公司 A method of test fiber wetness can
CN110672470A (en) * 2018-07-03 2020-01-10 宁德时代新能源科技股份有限公司 Pole piece infiltration testing method and device of secondary battery
CN110672470B (en) * 2018-07-03 2021-11-09 宁德时代新能源科技股份有限公司 Pole piece infiltration testing method and device of secondary battery
US11440285B2 (en) * 2020-05-04 2022-09-13 Textron Innovations Inc. Method of quantifying surface resin
CN111537674A (en) * 2020-05-14 2020-08-14 江苏恒神股份有限公司 Method for testing impregnation degree of prepreg
CN113418820A (en) * 2021-07-22 2021-09-21 中航复合材料有限责任公司 Method and device for detecting filament breakage rate of continuous fiber prepreg
CN113447391A (en) * 2021-08-31 2021-09-28 常州市宏发纵横新材料科技股份有限公司 Prepreg resin wettability testing method
CN115266457A (en) * 2022-07-27 2022-11-01 中复神鹰(上海)科技有限公司 Method for testing impregnation degree of carbon fiber prepreg

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