CN107688000A - Method, system and the cantilevered stripping off device of stripping type measure prepreg viscosity - Google Patents
Method, system and the cantilevered stripping off device of stripping type measure prepreg viscosity Download PDFInfo
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- CN107688000A CN107688000A CN201710562977.6A CN201710562977A CN107688000A CN 107688000 A CN107688000 A CN 107688000A CN 201710562977 A CN201710562977 A CN 201710562977A CN 107688000 A CN107688000 A CN 107688000A
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N19/00—Investigating materials by mechanical methods
- G01N19/04—Measuring adhesive force between materials, e.g. of sealing tape, of coating
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Abstract
The invention discloses method, system and the cantilevered stripping off device of a kind of stripping type measure prepreg viscosity, belong to material physical properties technical field of measurement and test.Assay method includes material preparation step, laminating step, strip step and calculation procedure；By retaining the backing film of varying number in two different test zones in material preparation step, so as to prepare the prepreg test sample with two-part otherness；In strip step, based in strip step on two sections peeling force difference and quantitatively characterize and determine the peeling force of prepreg；In calculation procedure, the viscosity and rigidity physical quantity for characterizing prepreg are determined by analysis and mathematic interpolation indirectly, method is simple, is easy to implement, is easily controllable, can be widely used in prepreg physical property testing field.
Description
Technical field
The present invention relates to material physical properties technical field of measurement and test, specifically, be related to a kind of test prepreg viscosity with
The method and implementation this method of rigidity are to the sticky measurement system being measured with rigidity of prepreg, cantilevered stripping off device.
Background technology
Prepreg viscosity refers to that under shorter time of contact and contact prepreg is formed with other object surfaces
A kind of incomplete bonding characteristic, its key factor as decision prepreg if appropriate for paving.In composite material laying work
In skill, it is desirable to which prepreg is in a rational sticky scope, when viscosity is insufficient, easily produces sliding, builds bridge etc. and lay defect；
And when sticky excessive, then it is unfavorable for adjusting when laying is wrong spreading again, be also unfavorable for prepreg peels off with backing paper, and can give and presoak
The conveyer belt of material comes difficult.
Therefore, it is before improving composite material spreading to determine exactly for the physical quantity for characterizing prepreg viscosity
One of carry, but due to lacking accurate and effective and quantitative assay method, cause people when describing the viscosity of prepreg, usually
High, medium and low third gear is rule of thumb divided into, or observational measurement is carried out using certain methods, such as：(1) rolling ball method：Rule
It is sized on 45 ° of slopes for being placed on the plastic beads of quality and posting prepreg, allows bead to scroll down through, is ground by rolling situation
Study carefully the viscosity of prepreg；(2) method of Tearing：Two panels prepreg is fit together, and applies pressure, is then torn, it is negative to provide
Two panels prepreg is completely torn apart the time of separation as its sticky index of sign under lotus；(3) partition method etc. is pasted.
Further, since prepreg self character is limited, the device of traditional measurement rigidity is caused to be unsuitable for determining prepreg
Bending stiffness.
The content of the invention
It is an object of the invention to provide a kind of stripping for quantifying and determining the physical quantity for characterizing prepreg viscosity exactly
Formula assay method；
It is a further object of the present invention to provide a kind of cantilevered stripping off device for being used to implement said determination method；
Another object of the present invention is to provide more than one stripping type measure prepregs for stating cantilevered stripping off device structure
The system of viscosity.
To achieve these goals, stripping type prepreg tack determination method provided by the invention comprises the following steps：
Material preparation step, the front for the prepreg test-strips that N bars are arranged side by side is attached at on a mantle, grown along test-strips
The first test zone and the second test zone are chosen in degree direction in test zone, retain N in the first test zone1Bar presoaks
The backing film of material, retain N in the second test zone2The backing film of bar prepreg, prepreg test sample is obtained, wherein, N >=2, N1
≠N2、0≤N1＜ N and 0≤N2＜ N；
Laminating step, apply the predetermined pressure of scheduled duration to prepreg test sample, its back side is affixed on test template；
Strip step, peeling force P is applied to one end of prepreg test sample, it is peeled off from test template, obtains and peels off
Peeling force P during the first test zone1And peeling force P during the second test zone2；
Calculation procedure, according to formulaThe physical quantity of computational representation prepreg viscosity, B survey for prepreg
The width of strip.
Due in material preparation step, the backing film of bar number not etc. is retained in the first test zone and the second test zone,
So as to which peeling force includes N-N in the first test zone1The viscosity factor of bar prepreg and the bending stiffness of N bar prepregs because
Element, and peeling force includes N-N in the second test zone2The viscosity factor of bar prepreg and the bending stiffness of N bar prepregs because
Element, to contain the difference related to viscosity factor otherness using the peeling force P in two sections, it can not only calculate for characterizing
The physical quantity of prepreg viscosity, and influence of the prepreg bending stiffness to viscosity measure is eliminated in calculating process so that survey
It is more accurate to determine result.
Specific scheme is in calculation procedure, according to formulaOr
The physical quantity of computational representation prepreg bending stiffness.So as to accurately determine the physics for characterizing prepreg bending stiffness
Amount.
Another specific scheme is that backing film is on prepreg test sample in the first test zone and the second test zone
Width on line of symmetry be arranged symmetrically.So that it is guaranteed that the stress equalization of the peel tip of prepreg test sample, is further improved
The accuracy of test result.
Preferable scheme is N2=0.It is easy to the processing of follow-up calculation procedure.
Another preferable scheme is test zone length for the length of the first test zone and the second test zone
Half.
In order to realize above-mentioned another object, provided by the present invention for the cantilevered stripping off device bag of measure prepreg viscosity
Include base, draw-off mechanism, balanced controls and the test template for pasting prepreg test sample, test template and pass through guide rail slide block machine
Structure is slidably mounted on base, and guide rail slide block mechanism includes the line slideway arranged along test template length direction；Drawing
Mechanism includes the first pulley being rotationally installed on base and across the pull rope being wound in the first pulley, first pulley position
In a side of line slideway, one end of pull rope is fixedly connected with one end of test template, and the other end is fixed with cantilever lever to be connected
Connect and movement velocity in stripping process is equal to the peeling rate of prepreg test sample；Balanced controls include rotationally being installed in
Second pulley on base and it is located at the another side of line slideway across the suspension strop being wound in second pulley, second pulley, hangs
One end of lanyard is fixedly connected with the other end of test template, and the other end is fixed with weight equalizer.
In continuous mode, the stripping off device is arranged on universal testing machine, and cantilever lever is fixed on universal test
On machine lifting mechanism, and the peel tip of prepreg test sample is fixed on the chuck of universal testing machine；During peel test,
Test template and prepreg test sample peel tip constant speed movement are pulled by cantilever lever.Motion of the stable weight to test template applies
One stable resistance, this resistance can eliminate the speed mutation and fluctuation that test template moves in the case where drawing wire saws, play
The effect of damper, effectively ensure that the accuracy of test result.
Specific scheme is that test template includes the movable die plate for pasting prepreg test sample and is fixed on guide rail slide block
Supporting plate on the sliding block of mechanism, movable die plate are removably mounted on supporting plate.It is easy to paste prepreg test sample in test process.
Another specific scheme is that the silicon for being used for being heated and be incubated to prepreg test sample is provided with test template
Heating plate.Required equilibrium temperature section is tested to provide prepreg viscosity and stiffness measuring, to meet research kinds of processes ginseng
Several lower researchs to prepreg viscosity and rigidity.
Preferable scheme is the direct of travel along pull rope in stripping process, and upstream ran is along parallel to test template
Plate face arranges that downstream ran is arranged along the direction parallel to the prepreg test sample section peeled off.Effectively ensure that test template
Movement velocity is equal with the peeling rate of prepreg test sample.
In order to realize above-mentioned another object, the system that the present invention provides stripping type measure prepreg viscosity includes universal test
Machine and the stripping off device being mounted on the universal testing machine, the cantilevered stripping described by any of the above-described technical scheme of stripping off device
From device；The base of stripping off device is fixed on the bearing of universal testing machine, and line slideway is arranged in the horizontal direction, prepreg examination
The peel tip of sample is clamped on the chuck of universal testing machine, cantilever lever be fixed on the lifting mechanism of universal testing machine and make across around
The traction ran for crossing first pulley is vertically arranged.
Brief description of the drawings
Fig. 1 is that stripping type determines the structural representation that the system of prepreg viscosity is under test mode in the embodiment of the present invention
Figure；
Fig. 2 is the structural representation that cantilevered stripping off device is under test mode in the embodiment of the present invention；
Fig. 3 is the schematic front view that cantilevered stripping off device is under test mode in the embodiment of the present invention；
Fig. 4 is the workflow diagram of the method that stripping type determines prepreg viscosity in the embodiment of the present invention；
Fig. 5 is the structure schematic diagram of prepreg test sample in the embodiment of the present invention；
Fig. 6 is the positive structure schematic of prepreg test sample in the embodiment of the present invention.
Embodiment
With reference to embodiments and its accompanying drawing the present invention is further illustrated.
Embodiment
Referring to Fig. 1 to Fig. 3, the system of stripping type measure prepreg viscosity of the present invention includes universal testing machine 1 and is mounted in
Cantilevered stripping off device 2 on the universal testing machine 1, cantilevered stripping off device 2 include base, test template 5, haulage gear,
Balanced controls and silicon heating plate 6.
Base includes the mounting disc 20 being fixed on the bearing 10 of universal testing machine 1 and the guide rail being installed in mounting disc 20
Pallet 21；Test template 5 includes supporting plate 51 and the movable die plate 52 being removably attached on supporting plate 51；Silicon heating plate 6 includes
Heating plate body 61, power line 62 and temperature sensor 63, so as to be controlled to heating process temperature, the silicon heating plate 6
Between movable die plate 52 and supporting plate 51, so that the prepreg test sample 4 being pasted onto on movable die plate 52 is heated and protected
Temperature is needed for determination experiment in temperature range；The lower end of supporting plate 51 is installed with multiple be slidably mounted on two line slideways 31
Sliding block 32, two line slideways 31 it is parallel and along test template 5 length direction arrangement so that supporting plate 51 passes through guide rail
Slide block mechanism 3 and be slidably mounted on base.
Haulage gear includes pull rope 24, cantilever lever 25 and first pulley 22, and first pulley 22 is installed in rotation on cunning
On wheel support 23, pulley bracket 23 is installed on guide rail tray 21 and positioned at the opening position of a side of line slideway 31；Traction
One end of rope 24 is fixed on one end of supporting plate 51, and the other end is fixed on cantilever lever 25 after around first pulley 22.It is outstanding
Armed lever 25 is installed on the lifting mechanism 12 of universal testing machine 1, is connected with and is used between lifting mechanism 12 and chuck 14
Test rises the 100N sensors 13 of pulling force.
Balanced controls include second pulley 27, weight equalizer 28 and across the suspension strops 29 being wound in second pulley 27, and second
Pulley 27 is installed in rotation on pulley bracket 26, and pulley bracket 26 is installed on guide rail tray 21 and is located at line slideway 31
Another side opening position；One end of suspension strop 29 is fixed on the other end of supporting plate 51, and weight equalizer 28 is fixed on suspension
On the other end of rope 29.
In test process, line slideway 31 is arranged in the horizontal direction, i.e., test template 5 can slide in the horizontal direction；Edge
Direct of travel of the pull rope 24 in test process, its upstream ran is arranged along the direction parallel to test template 5, i.e., along level
Direction is arranged, and downstream ran is vertically arranged；The stripping section of prepreg test sample 4 is clamped on the chuck 14 of universal testing machine 1,
And in stripping process, the downstream ran of pull rope 24 is arranged along the direction parallel to the prepreg test sample section peeled off, so as to
Make the forward speed of pull rope 24 equal with the peeling rate of prepreg test sample 4, i.e. slip of the test template 5 along line slideway 31
Speed is equal to the peeling rate of prepreg test sample 4.
Referring to Fig. 4, the viscosity of prepreg is included with the method that bending stiffness is measured using said determination system standby
Expect step S1, laminating step S2, strip step S3 and calculation procedure S4：
Material preparation step S1, the front for the prepreg test-strips that N bars are arranged side by side is attached at opening on mantle, along test-strips
Length direction chooses the first test zone and the second test zone in test zone, retains N in the first test zone1Bar is pre-
The backing film of material is soaked, retains N in the second test zone2The backing film of bar prepreg, prepreg test sample is obtained, wherein, N >=2,
N1≠N2、0≤N1＜ N and 0≤N2＜ N.
In the present embodiment, the process for preparing prepreg test sample 4 is, as shown in Figures 5 and 6, by 4 carbon fiber prepregs
The front of test-strips 41,42,43 and 44 is sticked with a mantle 47 is opened, and the length of four battens is 2L+M, and width is B,
The small mantle of bending stiffness is selected as far as possible for mantle 47, to reduce its influence to prepreg bending stiffness measurement result；By
It is sticked in by all test-strips fronts on same soft mode 47, can effectively ensures that four test-strips are synchronously peeled off.
As shown in Fig. 2, Fig. 5 and Fig. 6, test-strips leading section 402 is used in stripping process the folder for being clamped in universal testing machine 1
On first 14, its length is M, and test zone 401 is divided into the first test zone 403 and the second test zone 404, this two
The length of test zone is L, as the half of the length of test zone 401.
Retain backing film 45,46 of the prepreg test-strips 42,43 in the first test zone, tear other backing films,
In the present embodiment, the backing film 45,46 remained is on the 40 symmetrical cloth of line of symmetry on the width of prepreg test sample 4
Put.
Laminating step S2, apply the predetermined pressure of scheduled duration to prepreg test sample 4, its back side is pasted onto test template
On 5.
Movable die plate 52 is dismantled from supporting plate 51, and the back side of prepreg test sample 4 is directed at movable die plate 52 back to support
The surface of plate 51, pressure is applied to prepreg test sample 4, so that it is affixed on movable die plate, and remains with the part of backing film
There is no adherence force between test template 5, therefore its peeling force does not include the partial cohesive factor in test process.
Strip step S3, peeling force P is applied to one end of prepreg test sample 4, it is peeled off from the test plate of mould 5, obtained
Peel off peeling force P during the first test zone 4031And peeling force P during the second test zone 4042。
The movable die plate 52 for being pasted with prepreg test sample 4 is attached on supporting plate 51, and uses the chuck of universal testing machine 1
14 clamp the end 402 of prepreg test sample 4.
Start universal testing machine, prepreg test sample 4 is stripped down from test template 5, and records in stripping process
Displacement-force curve, chooses the first test zone 401 in the curve and one in part corresponding to the second test zone 402 is steady
Point of resistance force, that is, obtain peeling force P1With peeling force P2。
Calculation procedure S4, according to formulaThe physical quantity of computational representation prepreg viscosity, and according to formulaOrThe physical quantity of computational representation prepreg bending stiffness, B are prepreg
The width of test-strips.
With physical quantity F1、F2The viscosity and bending stiffness of prepreg are characterized respectively；Then for peeling force P1, there is formula 1：NBF2+
(N-N1)BF1=P1；And to peeling force P2, there is formula 2：NBF2+(N-N2)BF1=P2。
Association type 1 and formula 2, can be obtainedOr
For the present embodiment, due to N1=2 and N2=0, it can obtainOr
With the physical quantity F calculated1As sign prepreg viscosity, physical quantity F2As characterize prepreg bending stiffness,
Compared with qualitative description of the prior art, it has advantages below：
The measuring method for the mobile cantilever stripping off device based on measure prepreg viscosity and rigidity that the present invention designs, is used
Universal testing machine 100N force snesors are measured to the power in the prepreg stripping process for preparing, carry out on this basis analysis with
Mathematic interpolation, the measure of the sticky quantification for prepreg is realized indirectly, as a result accurately, method simplicity is easily achieved, just
In control；And the sign and measure to the rigidity of prepreg can be realized indirectly, it compensate at present to the stiffness measuring of prepreg
The missing of device and method.
Embodiments of the present invention are explained in detail above in conjunction with accompanying drawing, but the present invention is not limited to above-mentioned implementation
Mode, can also be on the premise of present inventive concept not be departed from those of ordinary skill in the art's possessed knowledge
Make a variety of changes.
Claims (10)
1. a kind of method of stripping type measure prepreg viscosity, including：
Material preparation step, the front for the prepreg test-strips that N bars are arranged side by side is attached at opening on mantle, along test-strips length side
To the first test zone and the second test zone is chosen in test zone, retain N in the first test zone1Bar prepreg
Backing film, retain N in the second test zone2The backing film of bar prepreg, prepreg test sample is obtained, wherein, N >=2, N1≠N2、
0≤N1＜ N and 0≤N2＜ N；
Laminating step, apply the predetermined pressure of scheduled duration to prepreg test sample, its back side is affixed on test template；
Strip step, peeling force P is applied to one end of prepreg test sample, it is peeled off from test template, obtains and peels off first
Peeling force P during test zone1And peeling force P during the second test zone2；
Calculation procedure, according to formulaThe physical quantity of computational representation prepreg viscosity, B are prepreg test-strips
Width.
2. according to the method for claim 1, it is characterised in that：
In the calculation procedure, according to formulaOrComputational representation presoaks
Expect the physical quantity of bending stiffness.
3. according to the method for claim 1, it is characterised in that：
In first test zone and second test zone, width of the backing film on the prepreg test sample
On line of symmetry be arranged symmetrically.
4. according to the method described in any one of claims 1 to 3 claim, it is characterised in that：N2=0.
5. according to the method described in any one of claims 1 to 3 claim, it is characterised in that：
The length of first test zone and second test zone is the half of test zone length.
A kind of 6. cantilevered stripping off device for being used to determine prepreg viscosity, it is characterised in that：
The cantilevered stripping off device includes base, draw-off mechanism, balanced controls and the test mould for pasting prepreg test sample
Plate, the test template are slidably mounted on the base by guide rail slide block mechanism, and the guide rail slide block mechanism includes
The line slideway arranged along the length direction of the test template；
The draw-off mechanism includes rotationally being installed on the base first pulley and across being wound in the first pulley
Pull rope, the first pulley are located at a side of the line slideway, one end of the pull rope and the test template
One end is fixedly connected, and the other end is fixedly connected with cantilever lever and movement velocity in stripping process is equal to the stripping of prepreg test sample
From speed；The balanced controls include the second pulley that is rotationally installed on the base and across being wound on the second pulley
On suspension strop, the second pulley is located at the another side of the line slideway, one end of the suspension strop and the test
The other end of template is fixedly connected, and the other end is fixed with weight equalizer.
7. cantilevered stripping off device according to claim 6, it is characterised in that：
The test template includes the movable die plate for pasting the prepreg test sample and is fixed on the guide rail slide block mechanism
Sliding block on supporting plate, the movable die plate is removably mounted on the supporting plate.
8. cantilevered stripping off device according to claim 6, it is characterised in that：
The silicon heating plate for being used for being heated and be incubated to prepreg test sample is provided with the test template.
9. according to the cantilevered stripping off device described in any one of claim 6 to 8 claim, it is characterised in that：
Along direct of travel of the pull rope in stripping process, plate face cloth of the ran edge in upstream parallel to the test template
Put, downstream ran is arranged along the direction parallel to the prepreg test sample section peeled off.
10. a kind of system of stripping type measure prepreg viscosity, including universal testing machine and it is mounted on the universal testing machine
Stripping off device, it is characterised in that：
Cantilevered stripping off device described in any one of the stripping off device claim 6 to 9 claim；
The base is fixed on the bearing of the universal testing machine, and the line slideway is arranged in the horizontal direction, the preimpregnation
The peel tip of material sample is clamped on the chuck of the universal testing machine, and the cantilever lever is fixed on the upper of the universal testing machine
Rise in mechanism and make vertically to arrange across around the traction ran of the first pulley.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562977.6A CN107688000A (en) | 2017-07-11 | 2017-07-11 | Method, system and the cantilevered stripping off device of stripping type measure prepreg viscosity |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710562977.6A CN107688000A (en) | 2017-07-11 | 2017-07-11 | Method, system and the cantilevered stripping off device of stripping type measure prepreg viscosity |
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Cited By (9)
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| CN109060650A (en) * | 2018-07-19 | 2018-12-21 | 湖南中烟工业有限责任公司 | A kind of method and fixture for testing cigarette water-base cement peel strength in cigarette paper |
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN111157447A (en) * | 2020-01-03 | 2020-05-15 | 云南名博包装印刷有限公司 | Device for testing heat resistance of adhesive and testing method using device |
| CN111272647A (en) * | 2019-08-29 | 2020-06-12 | 上海飞机制造有限公司 | Prepreg friction testing device and method |
| CN111398094A (en) * | 2020-03-09 | 2020-07-10 | 合肥工业大学 | Viscosity testing method and system for dry-method winding prepreg |
| CN112730230A (en) * | 2020-12-24 | 2021-04-30 | 中国航空工业集团公司成都飞机设计研究所 | Device and method for measuring viscosity of prepreg tows after automatic fiber laying |
| CN113777024A (en) * | 2021-11-11 | 2021-12-10 | 北京玻钢院复合材料有限公司 | Evaluation device and evaluation method for evaluating quality consistency of composite material tape winding prepreg |
| CN113899694A (en) * | 2021-09-27 | 2022-01-07 | 上海航天化工应用研究所 | Device and method for testing 90-degree peel strength of bonding interface of rocket engine combustion chamber |
| CN115160950A (en) * | 2022-07-14 | 2022-10-11 | 山东中烟工业有限责任公司 | Pressure-sensitive adhesive applicable to humid environment, preparation method and application thereof |
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| CN109060650A (en) * | 2018-07-19 | 2018-12-21 | 湖南中烟工业有限责任公司 | A kind of method and fixture for testing cigarette water-base cement peel strength in cigarette paper |
| CN109060650B (en) * | 2018-07-19 | 2023-11-10 | 湖南中烟工业有限责任公司 | Method and clamp for testing peel strength of water-based adhesive for cigarettes on cigarette paper |
| CN109580477A (en) * | 2018-11-14 | 2019-04-05 | 中航复合材料有限责任公司 | A kind of automatic placement splices the detection method of intensity with prepreg |
| CN111272647A (en) * | 2019-08-29 | 2020-06-12 | 上海飞机制造有限公司 | Prepreg friction testing device and method |
| CN111272647B (en) * | 2019-08-29 | 2022-12-20 | 上海飞机制造有限公司 | Prepreg friction testing device and method |
| CN111157447A (en) * | 2020-01-03 | 2020-05-15 | 云南名博包装印刷有限公司 | Device for testing heat resistance of adhesive and testing method using device |
| CN111398094A (en) * | 2020-03-09 | 2020-07-10 | 合肥工业大学 | Viscosity testing method and system for dry-method winding prepreg |
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Application publication date: 20180213 |