CN109613047A - A kind of prepreg gel time test method - Google Patents
A kind of prepreg gel time test method Download PDFInfo
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- CN109613047A CN109613047A CN201811533471.3A CN201811533471A CN109613047A CN 109613047 A CN109613047 A CN 109613047A CN 201811533471 A CN201811533471 A CN 201811533471A CN 109613047 A CN109613047 A CN 109613047A
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- prepreg
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N25/00—Investigating or analyzing materials by the use of thermal means
- G01N25/02—Investigating or analyzing materials by the use of thermal means by investigating changes of state or changes of phase; by investigating sintering
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Abstract
The invention belongs to detection technique field, it is related to one of a kind of forming composite intermediate products-prepreg physical property gel time test method more particularly to a kind of prepreg gel time test method.Testing procedure of the invention is to take sample identical with test product material first, and the quantity of sample is no less than 3, then preheats to sample, places into fixture and tested on rheology machine.The present invention carries out the test of prepreg gel time using rheometer, and the features such as rheometer temperature control is accurate, heat insulation effect is good, easy to operate, data stability is high is utilized.Solve the problems, such as that existing zero suction glue prepreg can not detect gel time simultaneously, test result accuracy is high, discrete small.The foundation of the method solves the problems, such as prepreg gel time without related detecting method.
Description
Technical field
The invention belongs to detection technique field, be related to a kind of forming composite intermediate products-prepreg physical property it
One gel time test method more particularly to a kind of prepreg gel time test method.
Background technique
The measurement of prepreg gel time at present is all made of probe tune silk method both at home and abroad, such as: Unite States Standard ASTM D3532,
Professional standard HB7736.7 etc., present prepreg are mostly zero suction glue prepreg, have been difficult to make satisfaction using above method
Result.But prepreg gel is the evaluation indispensable index of prepreg performance again.
Summary of the invention
When the purpose of the present invention is aiming at the shortcomings in the prior art, proposing a kind of progress prepreg gel using rheometer
Between test method.
The technical solution of the invention is as follows, and testing procedure is: 1) taking sample identical with test product material, sample
Quantity be no less than 3, the size of every sample is identical with laying, sample be Fabric prereg or one-way tape prepreg, test
Environment temperature is 23 DEG C ± 5 DEG C, relative humidity≤65%, carries out isothermal test using rheometer, test temperature is solid for prepreg
Change temperature；
2) before the test, by the instrument of prepreg and test with isolation film or paper and fixture room temperature be 23 DEG C ±
5 DEG C, at least 2h is placed under relative humidity≤65% environment；
3) Fabric prereg or one-way tape prepreg are overlapped paving to together, Fabric prereg laying is 3--6 layers, single
It is 4--8 layers to band prepreg overlay；
4) sample is placed in fixture, the fixture is aluminium alloy parallel plate fixtures；
5) rheometer is adjusted, is controlled using dynamic mode, constant temperature under prepreg solidification temperature, selection storage modulus (G '),
Loss modulus (G ＂) terminates test after two curve intersections, marks gel time: when the intersection point of G ' and G ＂ is gel
Between, the test result as prepreg gel time is averaged after all samples are finished.
The specimen size is φ 25mm, and Fabric prereg laying is 4 layers, and one-way tape prepreg overlay is 6 layers.
The present invention has the advantage that and beneficial effect, and the present invention carries out the test of prepreg gel time using rheometer,
The features such as rheometer temperature control is accurate, heat insulation effect is good, easy to operate, data stability is high is utilized.It solves existing zero simultaneously and inhales glue
Prepreg can not detect the problem of gel time, and test result accuracy is high, discrete small.The foundation of the method solves preimpregnation
Expect the problem of gel time is without related detecting method.
Detailed description of the invention
Fig. 1 is specimen holder assembling schematic diagram of the present invention.
Fig. 2 is gel curve synoptic diagram in the embodiment of the present invention.
Specific embodiment
Prepreg gel time test method, testing procedure is: sample identical with test product material is taken, sample
Quantity is no less than 3, and the size of every sample is identical with laying, and test environment temperature is 23 DEG C ± 5 DEG C, and relative humidity≤
65%, isothermal test is carried out using tensile testing machine rheometer；
2. before the test, will be placed in room temperature with isolation film or the prepreg of paper and the instrument and fixture of test and at least put
Set 2h, 23 DEG C ± 5 DEG C of test bay, relative humidity≤65%.
3. rheometer used is able to achieve temperature programmed control, and maximum temperature is not according to prepreg gel time test method
Lower than 400 DEG C, the equal precision of temperature control is not less than 0.5 DEG C, and the solidification temperature of existing resin is completely covered in temperature, can carry out different trees
The test of the prepreg of rouge solidification temperature.
4. prepreg gel time test method fixture is, the diameter of the aluminium alloy parallel plate fixtures and the sample of preparation
Diameter is adapted, and such as takes φ 25mm.
5. Fabric prereg laying is 3--6 layers, one-way tape prepreg overlay is 4--8 layers, to guarantee test result
Consistency use Fabric prereg laying for 4 layers, one-way tape prepreg overlay is 6 layers more suitable.
6. using rheometer, controlled using dynamic mode, constant temperature under prepreg solidification temperature, when the storage modulus in curve
Terminate test after the intersection of (G '), loss modulus (G ＂), mark gel time: the intersection point of G ' and G ＂ is gel time.
Embodiment 1
Span Fabric prereg carries out gel time test
Test prepares
The sample of φ 25mm is cut, Fabric prereg is 4 layers of overlapping paving to together.
Test condition (environment)
Room temperature environment: 23 DEG C ± 5 DEG C, relative humidity≤65%.
Test program (test procedure)
Parameter setting
Rheometer (AR2000)
Test pattern: it is controlled using dynamic mode；
Constant temperature 10min at 177 DEG C of prepreg solidification temperature.
Test process
To 177 DEG C of progress spacing zeros of fixture；
Fire door is shut to be heated at 177 DEG C of prepreg solidification temperature；
Fire door is opened after to temperature, sample is put into fixture rapidly, sees Fig. 1；
Fire door is shut, alignment jig spacing allows sample 2 to be filled under upper fixture 1 between fixture 3, when furnace temperature is raised to preimpregnation
It is above under material solidification temperature to start to test.
After on-test, instrument record trial curve, after storage modulus (G '), the loss modulus (G ＂) in curve intersect
Terminate test；
Mark gel time: the intersection point of G ' and G ＂ is gel time, sees Fig. 2.
Embodiment 2
Epoxy-modified single-phase zone prepreg carries out gel time test
Test prepares
The sample of φ 25mm is cut, single-phase zone prepreg is 6 layers of overlapping paving to together.
Test condition (environment)
Room temperature environment: 23 DEG C ± 5 DEG C, relative humidity≤65%.
1. test program (test procedure)
A) parameter setting
I. rheometer (AR2000)
II. it test pattern: is controlled using dynamic mode；
III. constant temperature 10min at 120 DEG C of prepreg solidification temperature.
IV. process is tested
V. to 120 DEG C of progress spacing zeros of fixture；
VI. fire door is shut to be heated at 120 DEG C of single-phase zone prepreg solidification temperature；
VII. fire door is opened after arriving temperature, sample is put into fixture rapidly, sees Fig. 1；
VIII. shut fire door, alignment jig spacing allows sample 2 to be filled under upper fixture 1 between fixture 3, when furnace temperature be raised to it is pre-
It is above under leaching material solidification temperature to start to test.
B) after on-test, instrument record trial curve, when the storage modulus (G ') in curve, loss modulus (G ＂) intersection
After terminate to test；
Mark gel time: the intersection point of G ' and G ＂ is gel time, sees Fig. 2.
Claims (2)
1. a kind of prepreg gel time test method, testing procedure is: 1) taking sample identical with test product material, try
The quantity of sample is no less than 3, and the size of every sample is identical with laying, and sample is Fabric prereg or one-way tape prepreg, surveys
Trying environment temperature is 23 DEG C ± 5 DEG C, relative humidity≤65%, carries out isothermal test using rheometer, test temperature is prepreg
Solidification temperature；
It 2) is before the test, 23 DEG C ± 5 DEG C in room temperature by the instrument of prepreg and test with isolation film or paper and fixture,
At least 2h is placed under relative humidity≤65% environment；
3) Fabric prereg or one-way tape prepreg are overlapped paving to together, Fabric prereg laying is 3--6 layers, one-way tape
Prepreg overlay is 4--8 layers；
4) sample is placed in fixture, the fixture is aluminium alloy parallel plate fixtures；
5) rheometer is adjusted, is controlled using dynamic mode, constant temperature under prepreg solidification temperature, storage modulus (G '), loss are selected
Modulus (G ＂) terminates test after two curve intersections, and mark gel time: the intersection point of G ' and G ＂ is gel time, will
All samples are averaged the test result as prepreg gel time after finishing.
2. a kind of prepreg gel time test method according to claim 1, characterized in that the specimen size is φ
25mm, Fabric prereg laying are 4 layers, and one-way tape prepreg overlay is 6 layers.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533471.3A CN109613047A (en) | 2018-12-14 | 2018-12-14 | A kind of prepreg gel time test method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811533471.3A CN109613047A (en) | 2018-12-14 | 2018-12-14 | A kind of prepreg gel time test method |
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| CN109613047A true CN109613047A (en) | 2019-04-12 |
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| CN201811533471.3A Pending CN109613047A (en) | 2018-12-14 | 2018-12-14 | A kind of prepreg gel time test method |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2449146B (en) * | 2008-01-22 | 2009-04-22 | Gurit | Fibre-reinforced composite material and manufacture thereof |
| CN102207476A (en) * | 2011-03-16 | 2011-10-05 | 常州天合光能有限公司 | Testing method for determining gelation time of EVA hot melt adhesive by rheometer |
| CN104849301A (en) * | 2015-05-12 | 2015-08-19 | 东华大学 | Device for measuring gel time of prepregs |
| CN105044143A (en) * | 2015-06-26 | 2015-11-11 | 东华大学 | Gelation time test method for prepreg |
| CN205404460U (en) * | 2016-03-09 | 2016-07-27 | 沧州临港天昭电材有限公司 | Gel time measurement device |
-
2018
- 2018-12-14 CN CN201811533471.3A patent/CN109613047A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2449146B (en) * | 2008-01-22 | 2009-04-22 | Gurit | Fibre-reinforced composite material and manufacture thereof |
| CN102207476A (en) * | 2011-03-16 | 2011-10-05 | 常州天合光能有限公司 | Testing method for determining gelation time of EVA hot melt adhesive by rheometer |
| CN104849301A (en) * | 2015-05-12 | 2015-08-19 | 东华大学 | Device for measuring gel time of prepregs |
| CN105044143A (en) * | 2015-06-26 | 2015-11-11 | 东华大学 | Gelation time test method for prepreg |
| CN205404460U (en) * | 2016-03-09 | 2016-07-27 | 沧州临港天昭电材有限公司 | Gel time measurement device |
Non-Patent Citations (3)
| Title |
|---|
| 周 娟等: "热固性预浸料凝胶特性的固体扭转测试方法", 《复合材料学报》 * |
| 益小苏: "《先进树脂基复合材料高性能化理论与实践》", 30 November 2011, 国防工业出版社 * |
| 美国CMH-17协调委员会: "《复合材料手册：聚合物基复合材料 第1卷 结构材料表征指南》", 31 December 2014, 上海交通大学出版社 * |
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Application publication date: 20190412 |