CN105223119A - A kind of method for the test of airfelt gas penetration potential - Google Patents
A kind of method for the test of airfelt gas penetration potential Download PDFInfo
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- CN105223119A CN105223119A CN201510677061.6A CN201510677061A CN105223119A CN 105223119 A CN105223119 A CN 105223119A CN 201510677061 A CN201510677061 A CN 201510677061A CN 105223119 A CN105223119 A CN 105223119A
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- airfelt
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Abstract
The present invention is a kind of method for the test of airfelt gas penetration potential, the method that tradition evaluates airfelt gas penetration potential must use specialized instrument and equipment quantitatively to calculate in laboratory conditions, and cannot the gas penetration potential of authentic assessment airfelt (under high-temperature high-pressure state) in the curing process.The present invention, using the existing airfelt of enterprise as target sample, utilizes
7400, the characteristic faded in DPT1000 vacuum bag curing process, adopts the method for qualitative comparison, devises a kind of method of simply effective, convenient and swift, workable evaluation airfelt gas penetration potential.Shorten and select novel ventilated felt required time, reduce and select cost, ensure that and select quality.
Description
The present invention is a kind of method for the test of airfelt gas penetration potential, belongs to technical field of measurement and test.
Prior art
When airfelt is composite element blank forming and hardening, at operating temperature can Exhaust Gas, keep fabric or the fiber felt-like material of vacuum passage.The quality of its gas penetration potential directly affects the quality of shaping rear composite element quality.
General gas penetration potential index is air penetrability, according to GB/T5453-1997 (ISO9237:1995) " mensuration of textile fabric gas penetration potential ", air penetrability is by under the pressure differential of regulation, and the air flow rate calculating measured perpendicular through the given area of sample in certain hour draws.When enterprise selects new product, the method for this measurement airfelt performance quality comprises following technology contents:
1. need to prepare pertinent instruments (as samples round platform, fixture, rubber washer, pressure gauge or tensimeter, the steady suction apparatus of air-flow (blower fan), flowmeter, volumeter or measurement aperture etc.), and measure in laboratory environment.More fund and test maintenance cost must be dropped into.General enterprises does not possess above test condition;
2. the pressure drop of test is only up to 0.5kPa, and can only at room temperature measure.And during general vacuum bag/autoclave method forming composite, solidifying pressure reaches as high as 0.78MPa, and temperature reaches as high as 190 DEG C.The method cannot the gas penetration potential of new, the old two kinds of airfelt of authentic assessment (under high-temperature high-pressure state) in the curing process.
Existing method of testing only at 0.5kPa, can measure airfelt permeability under room temperature.But during general vacuum bag/autoclave method forming composite, solidifying pressure reaches as high as 0.78MPa, and temperature reaches as high as 190 DEG C.Airfelt is open structure, permeability be stressed and the impact of temperature comparatively large, existing method of testing cannot pass judgment on airfelt permeability under High Temperature High Pressure, can not meet compound substance manufacturing enterprise to airfelt performance requirement.
Summary of the invention
The present invention designs for above-mentioned the deficiencies in the prior art just and provides a kind of method for the test of airfelt gas penetration potential, its objective is with the existing airfelt of enterprise for target sample, utilizes
the characteristic faded in DPT1000 vacuum bag curing process, adopts the method for qualitative comparison, devises a kind of simple and effective, conveniently, is applicable to the method for the alternative airfelt gas penetration potential of qualitative evaluation of enterprise operations.Its objective is that shortening airfelt selects the cycle, saved and selected cost, ensure that and select quality.
The object of the invention is to be achieved through the following technical solutions:
The method that this kind is tested for airfelt gas penetration potential, is characterized in that: the step of the method is:
Step one, choose two identical metal plate moulds (1), the planar dimension of metal plate mould (1) is 1M*1M, one of them is as sample test mould, and another is as test sample mould, on three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
At another as three layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Step 2, two to be vacuumized, and keep vacuum tightness within the scope of 0.08 ~ 0.10MPa, then elevated cure is carried out, solidification temperature is 180 ± 5 DEG C, temperature retention time is 180 ± 10min, solidifying pressure is 0.6 ± 0.05MPa, and the temperature rate of solidification and cooling procedure is 1 ~ 3 DEG C/min;
The color change of step 3, the every one deck of airfelt observed in latter two vacuum bag of solidification;
Step 4, repeat step one to the test process of step 3, difference is as three layers, test sample mould upper berth WF330 airfelt, and every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Step 5, repetition step one are to the test process of step 3, and difference is:
As three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant;
As four layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 3 ~ 4mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant.
Color after observing solidification in airfelt changes.It is vacuum bag color that airfelt pastes vacuum bag face look, if pasting die face color is vacuum bag color, then illustrates that airfelt gas penetration potential is excellent.The color change of the contrast existing airfelt of enterprise and novel alternative airfelt, the vacuum bag color in airfelt, close to subsides die face, proves that airfelt gas penetration potential is more excellent.
The advantage of technical solution of the present invention is simply effective, convenient and swift, workable, shortens and selects novel ventilated felt required time, reduce and select cost, ensure that and select quality.
Accompanying drawing explanation
Fig. 1 is that in the method for the invention, vacuum bag pastes structural representation
Embodiment
Below with reference to drawings and Examples, technical solution of the present invention is further described:
The method that this kind is tested for airfelt gas penetration potential, is characterized in that: the step of the method is:
Step one, choose two identical metal plate moulds (1), the planar dimension of metal plate mould (1) is 1M*1M, one of them is as sample test mould, and another is as test sample mould, on three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
At another as three layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Step 2, two to be vacuumized, and keep vacuum tightness within the scope of 0.08 ~ 0.10MPa, then elevated cure is carried out, solidification temperature is 180 ± 5 DEG C, temperature retention time is 180 ± 10min, solidifying pressure is 0.6 ± 0.05MPa, and the temperature rate of solidification and cooling procedure is 1 ~ 3 DEG C/min;
The color change of step 3, the every one deck of airfelt observed in latter two vacuum bag of solidification;
airfelt pastes vacuum bag face ground floor and second layer color is light green color, and third layer color is white;
it is light green color that airfelt pastes vacuum bag face ground floor color, and the second layer and third layer color are white.Contrast
airfelt and
the color change of airfelt,
under airfelt High Temperature High Pressure permeability inferior to
airfelt performance does not meet enterprise requirements.
Step 4, repeat step one to the test process of step 3, difference is as three layers, test sample mould upper berth WF330 airfelt, and every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Color after observing solidification in airfelt changes,
pasting vacuum bag face ground floor and second layer color with WF330 airfelt is light green color, and third layer color be white.Change the color of both airfelt, under airfelt High Temperature High Pressure, permeability is similar, and WF330 airfelt performance meets enterprise requirements.
Step 5, repetition step one are to the test process of step 3, and difference is:
As three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant;
As four layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 3 ~ 4mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant;
Color after observing solidification in airfelt changes.
airfelt pastes vacuum bag face ground floor and second layer color is light orange, and third layer color is white;
airfelt four layers of color are light orange.Contrast
airfelt and
the color change of airfelt,
under airfelt High Temperature High Pressure, permeability is better than
airfelt performance does not meet enterprise requirements.
Claims (1)
1., for a method for airfelt gas penetration potential test, it is characterized in that: the step of the method is:
Step one, choose two identical metal plate moulds (1), the planar dimension of metal plate mould (1) is 1M*1M, one of them is as sample test mould, and another is as test sample mould, on three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
At another as three layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Step 2, two to be vacuumized, and keep vacuum tightness within the scope of 0.08 ~ 0.10MPa, then elevated cure is carried out, solidification temperature is 180 ± 5 DEG C, temperature retention time is 180 ± 10min, solidifying pressure is 0.6 ± 0.05MPa, and the temperature rate of solidification and cooling procedure is 1 ~ 3 DEG C/min;
The color change of step 3, the every one deck of airfelt observed in latter two vacuum bag of solidification;
Step 4, repeat step one to the test process of step 3, difference is as three layers, test sample mould upper berth WF330 airfelt, and every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck
vacuum bag, then paste vacuum bag with vacuum sealant;
Step 5, repetition step one are to the test process of step 3, and difference is:
As three layers, sample test mould upper berth
airfelt, every layer of airfelt thickness is 4 ~ 5mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant;
As four layers, test sample mould upper berth
airfelt, every layer of airfelt thickness is 3 ~ 4mm, and outside spreads one deck DPT1000 vacuum bag, then pastes vacuum bag with vacuum sealant.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN201510677061.6A CN105223119B (en) | 2015-10-16 | 2015-10-16 | A kind of method for airfelt permeability test |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510677061.6A CN105223119B (en) | 2015-10-16 | 2015-10-16 | A kind of method for airfelt permeability test |
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| CN105223119A true CN105223119A (en) | 2016-01-06 |
| CN105223119B CN105223119B (en) | 2018-07-06 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540405A (en) * | 2018-11-07 | 2019-03-29 | 昌河飞机工业（集团）有限责任公司 | A kind of composite material shaping mould gas leakage test method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090158825A1 (en) * | 2007-06-27 | 2009-06-25 | Andrew Kallmes | Fluid transportation by a sheet of material |
| CN102183444A (en) * | 2011-01-27 | 2011-09-14 | 中国商用飞机有限责任公司 | Device and method for testing gas permeability in inner direction of paving layer surface |
| CN104897541A (en) * | 2015-05-07 | 2015-09-09 | 中南大学 | Combined type multifunctional fiber fabric in-plane permeability integrated test device |
-
2015
- 2015-10-16 CN CN201510677061.6A patent/CN105223119B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20090158825A1 (en) * | 2007-06-27 | 2009-06-25 | Andrew Kallmes | Fluid transportation by a sheet of material |
| CN102183444A (en) * | 2011-01-27 | 2011-09-14 | 中国商用飞机有限责任公司 | Device and method for testing gas permeability in inner direction of paving layer surface |
| CN104897541A (en) * | 2015-05-07 | 2015-09-09 | 中南大学 | Combined type multifunctional fiber fabric in-plane permeability integrated test device |
Non-Patent Citations (1)
| Title |
|---|
| 张建祥等: "纺织品透气性测试", 《印染》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109540405A (en) * | 2018-11-07 | 2019-03-29 | 昌河飞机工业（集团）有限责任公司 | A kind of composite material shaping mould gas leakage test method |
| CN109540405B (en) * | 2018-11-07 | 2021-02-02 | 昌河飞机工业（集团）有限责任公司 | Air leakage testing method for composite material forming die |
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| CN105223119B (en) | 2018-07-06 |
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