CN107478522A - A kind of photovoltaic module silica gel testing device for shear strength and method - Google Patents
A kind of photovoltaic module silica gel testing device for shear strength and method Download PDFInfo
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- CN107478522A CN107478522A CN201710693074.1A CN201710693074A CN107478522A CN 107478522 A CN107478522 A CN 107478522A CN 201710693074 A CN201710693074 A CN 201710693074A CN 107478522 A CN107478522 A CN 107478522A
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- shear strength
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/24—Investigating strength properties of solid materials by application of mechanical stress by applying steady shearing forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N1/00—Sampling; Preparing specimens for investigation
- G01N1/28—Preparing specimens for investigation including physical details of (bio-)chemical methods covered elsewhere, e.g. G01N33/50, C12Q
- G01N1/2813—Producing thin layers of samples on a substrate, e.g. smearing, spinning-on
- G01N2001/2833—Collecting samples on a sticky, tacky, adhesive surface
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- 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)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
A kind of photovoltaic module silica gel testing device for shear strength and method, belong to silica gel technical field of measurement and test.Silica gel testing device for shear strength includes the standard film that two close fits use, two described standard pad configurations are identical, the standard film includes test piece and movable holding piece, test piece one end is provided with adhesion zone, the other end is provided with connecting hole, movable holding piece one end is provided with connecting hole, and test piece is connected with movable holding piece by the connection ring through connecting hole.Adhesion zone is flat surface, and silica gel is coated on adhesion zone.Two standard films lead to adhesion zone connection.Silica gel method for testing shear strength includes step：1) setup test sample preparation material；2) test sample is prepared；3) tension test, record test peak load are carried out to test sample；4) test result is handled.By the test device and method of testing, test period can be shortened, and can accurately calculate the shear strength of silica gel.
Description
Technical field
The present invention relates to silica gel technical field of measurement and test, more particularly to a kind of photovoltaic module silica gel testing device for shear strength
And method.
Background technology
Photovoltaic module is the core in photovoltaic generating system, and highest part is worth in photovoltaic generating system.
Its effect is to convert solar energy into electrical energy, or is sent in battery and stores, or promotes loaded work piece.Main material has glass
Glass, EVA（Ethylene-vinyl acetate copolymer）, cell piece, backboard, terminal box, aluminium, welding and silica gel.In the life of photovoltaic module
Silica gel is widely used during production, as frame and the adhesives of glass.Silica gel not only has to aluminium, glass, plastics etc.
Fabulous adhesive property, and with high-low temperature resistant, electrical insulating property ageing-resistant, flexible, anti-rainwater is moistureproof and excellent.Photovoltaic
Component in use, inevitably acted on by external force, the active force that the silica gel for bonding is subject to is perpendicular to silicon
The shearing force of gluing junction.If the shear strength of silica gel is relatively low, silica gel will fail, and directly affects the performance of photovoltaic module.
The shear strength of silica gel security performance to photovoltaic module, uses the longevity as the important parameter for characterizing silica gel performance
Life all has a direct impact.Have the function that to silica gel shear strength test in terms of control of product quality extremely critical.Silicon at present
In the test process of glue shear strength, different test operation personnel, different manufacturers product or identical producer's different batches
Product, artificial test error is big, and repeatability is low.It directly results in and lack comparativity between multiple test result.And test week
Phase is grown so that the production efficiency of photovoltaic module is affected.
The content of the invention
The technical problem to be solved in the present invention is to be missed for above-mentioned prior art present in silica gel shear strength test
The problem of poor big, repeatability is low, and test period is long, there is provided a kind of photovoltaic module silica gel testing device for shear strength and method.
In order to solve the above technical problems, the technical solution used in the present invention is：A kind of photovoltaic module is sheared strong with silica gel
Spend test device, it is characterised in that including：
The standard film that two close fits use, described two standard pad configurations are identical, the standard film include test piece and
Movable holding piece.
Further, described test piece one end is provided with adhesion zone, and the other end is provided with connecting hole；Described movable holding piece one end
Provided with connecting hole；
The test piece is with the movable holding piece by being connected through the connection ring of the connecting hole.
Further, the surface of the adhesion zone is flat surface；
The width of the adhesion zone is identical with the width of the test piece；The length of the adhesion zone and the width of the adhesion zone
It is identical.
Further, the test piece and the movable holding piece are rectangle；
The width of the movable holding piece is less than the width of the test piece；The length of the movable holding piece is less than the test
Leaf length.
Further, two standard films are connected by the adhesion zone of described test piece one end.
Present invention also offers a kind of method of testing using the test device to include step：
1) setup test sample preparation material；
2) test sample is prepared, carries out silica gel curing process；
3) tension test, record test peak load are carried out to test sample；
4) data processing is carried out to test result.
Further, material is prepared described in the step 1) includes silica gel to be measured, standard film, interval wire, counterweight.
Further, the step 2) includes：
21) test sample is prepared；
22) silica gel curing process.
Further, the step 21) includes：
211) adhesion zone is surface-treated；
212) silica gel is smeared；
213) wire is spaced to place；
214) standard film is bonded.
Further, the step 22) includes：
221) test sample is put into environmental aging case；
222) temperature, humidity and the hardening time of the environmental aging case are set.
The beneficial effect of silica gel testing device for shear strength provided by the invention and method is：Compared with prior art,
Test sample is prepared using the method described in silica gel method for testing shear strength step 2) provided by the invention, mistake can be reduced
Difference, and repeatability is strong.And silica gel is solidified by environmental aging case, silica gel is effectively reduced and solidifies under normal temperature environment
Time, the silica gel shear strength test cycle is shortened, improve the production efficiency of photovoltaic module.
Brief description of the drawings
Fig. 1 is the structural representation for the device for testing that one embodiment of the invention provides；
Fig. 2 is the top view of device for testing in Fig. 1；
Fig. 3 is the flow chart that one embodiment of the invention provides silica gel method for testing shear strength；
Fig. 4 is the concrete operations flow chart of step 21) in one embodiment of the invention；
Fig. 5 is the concrete operations flow chart of step 22) in one embodiment of the invention.
In Fig. 1, Fig. 2, piece 1 is tested, movable holding piece 2, connection ring 3, adhesion zone 4, links hole 5.
Embodiment
In order that technical problems, technical solutions and advantages to be solved are more clearly understood, tie below
Drawings and Examples are closed, the present invention will be described in further detail.It should be appreciated that specific embodiment described herein is only
To explain the present invention, it is not intended to limit the present invention.
Fig. 1 and Fig. 2 are referred to, now a kind of photovoltaic module provided by the invention is carried out with silica gel testing device for shear strength
Explanation.
A kind of photovoltaic module silica gel testing device for shear strength, including the standard film that two close fits use,
Two standard pad configurations are identical, and standard film includes test piece 1 and movable holding piece 2.Test piece 1 one end is provided with adhesion zone 4, another
End is provided with connecting hole 5；Movable one end of holding piece 2 is provided with connecting hole 5.The connecting hole 5 is positioned at test piece 1, movable holding piece 2 one
The centre position at end.Test piece 1 is connected with movable holding piece 2 by the connection ring 3 through connecting hole 5.Connection ring 3 is closed circular
Ring, and there is certain rigidity.The diameter of connecting hole 5 is more than the diameter for forming the wire of connection ring 3, ensures that connection ring 3 can
Through connecting hole 5.It is rectangle structure that piece 1, which is tested, with movable holding piece 2, and the width of movable holding piece 2 and length are small
In the width and length of test piece 1.The adhesion zone 4 for testing the one end of piece 1 is the length of side and test piece 1 width identical square.When
So, other shapes structure, but the calculating due to shear strength and the face of adhesion zone 4 can also be used by testing piece 1 and movable holding piece 2
Product is related, and adhesion zone 4 is the calculating that regular geometric shapes are more beneficial for shear strength.Adhesion zone 4 can also be circular, rectangle
Deng regular geometric shapes.The surface of adhesion zone 4 is flat surface, and the flat surface refers to, the surface of adhesion zone 4 has certain
Roughness, but in the absence of obvious, macroscopic depression or it is raised the defects of, silica gel to be measured is coated uniformly on adhesion zone 4.
If adhesion zone 4 exists raised or sunken, the bond area of silica gel and adhesion zone 4 will be increased, so that breaking silica gel most
Big load becomes big, causes silica gel shear strength bigger than normal；If adhesion zone 4 has foreign matter, silica gel and the bonding plane of adhesion zone 4 will be caused
Product reduces, so that the maximum load for breaking silica gel diminishes, causes silica gel shear strength less than normal.Upper standard film and lower standard film
It is attached by adhesion zone 4.
When carrying out shear strength test to silica gel to be measured, silica gel shear strength test equipment needs to carry out test device
Clamping, the fixture of test equipment is in the same plane perpendicular to ground.Usual silica gel testing device for shear strength is by two one
Body construction standard piece forms, when the fixture of test equipment is clamped in test device both ends, due to integrative-structure test device two
The retained part at end will cause silica gel to be measured vertical by one in test process not in the same plane perpendicular to ground
Power in the surface of adhesion zone 4, causes shear strength test error occur.When standard film forms for test piece 1 and movable holding piece 2
During Split type structure, the fixture of test equipment is clamped on movable holding piece 2, and movable holding piece 2 passes through connection ring 3 with test piece 1
Connection, silica gel to be measured, only by the power parallel to the surface of adhesion zone 4, avoid test device and integrally tied in test process
Test error caused by structure is possible in test process.
In order to ensure the accuracy of test result, test device can not deform upon in test process, so test dress
Put and use stainless steel material, or other there is rigidity, can be in the material that shear strength test process does not deform upon, such as
The materials such as aluminium, copper.
Referring to Fig. 3, Fig. 3 is the flow chart of silica gel method for testing shear strength in one embodiment of the invention.
Utilize the method for testing of described test device, including step：
S1：Setup test sample preparation material；
S2：Test sample is prepared, and carries out curing process；
S3：Tension test, record test peak load are carried out to test sample；
S4：Test result is handled.
In step sl, it is necessary to which the material prepared includes silica gel to be measured, standard film, interval wire, counterweight.Specifically,
, it is necessary to prepare the standard film of 10 piece of 304 stainless steel material in the specific embodiment of the present invention, standard film include test piece and
Movable holding piece.Piece is tested as long 100 ± 0.5mm, wide 25 ± 0.5mm, thick 1.4mm rectangle stainless-steel sheet；Activity folder
Piece is held as long 20 ± 0.5mm, wide 10 ± 0.5mm, thick 1.4mm rectangle stainless-steel sheet；Form the stainless steel wire of connection ring
A diameter of 4mm.Need to prepare 10 interval wires, interval wire long 20mm, diameter 0.5mm.5 1kg counterweights.In step S2
In, 5 identical test samples are prepared using the material prepared in step S1, each test sample includes two standard films and two
Root interval wire, and pressure is applied to adhesion zone using a counterweight, ensure that each test sample layer of silica gel thickness is consistent.
Only when layer of silica gel thickness is uniform, it just can guarantee that the power being applied on silica gel to be measured is parallel to adhesion zone surface.Will system
The standby test sample completed is put into progress silica gel solidification in environmental aging case.In step S3, by by silica gel curing process
Test sample is positioned over room temperature environment lower 2 hours, makes test sample temperature consistent with test environment temperature, avoids due to test
There is the temperature difference in sample temperature, cause test result error occur with test environment temperature.Using test equipment to being made in step S2
5 standby test samples carry out identical shear strength test, and the fixture of test equipment one end is moved with 50mm/min speed,
Until two standard film adhesion zones are completely separated.The maximum load that test equipment is shown is recorded, as test sample
The maximum pull being subject in test process., it is necessary to be counted to the maximum load data recorded in step S3 in step S4
Calculate, obtain the shear strength data of silica gel to be measured.Shear strength is the quotient of maximum pull and adhesion zone area.In step S3 altogether
5 identical shear strength tests are carried out, the maximum load data obtained in this 5 times tests are respectively calculated, and to meter
Obtained shear strength data carry out arithmetic average calculating, the final testing result as silica gel shear strength to be measured.
Referring to Fig. 4, Fig. 4 is the concrete operations flow chart of step 21) in one embodiment of the invention.
Step 21) specifically includes：
S211：Adhesion zone is surface-treated；
S212：Silica gel coats；
S213：Wire is spaced to place；
S214：Standard film is bonded.
, it is necessary to roughness concentration be carried out to adhesion zone surface, if adhesion zone surface roughness can not in step S211
Meet the requirement less than 0.050 ± 0.025 μm, then need to use the sand paper of 300 mesh to carry out horizontal, crossed longitudinally polishing, and make
Cleaned with absolute ethyl alcohol, until adhesion zone, surface roughness disclosure satisfy that the requirement less than 0.050 ± 0.025 μm.Only
Ensure that adhesion zone surface is satisfactory flat surface, just can guarantee that silica gel shear strength test result is accurate.In step
In rapid S212, silica gel coating is carried out.One standard film is lain in a horizontal plane in pallet, by silica gel to be measured coated in the standard film
In adhesion zone, ensure that adhesion zone is covered by silica gel to be measured completely, and ensure that silica gel thickness to be measured is uniform as far as possible.In step S213,
Enter the placement of between-line spacing wire, two interval wires are uniformly placed on Silica Surface to be measured along the direction parallel to applying power.
Being spaced wire can also use the uniform ball of diameter to replace.In step S214, by another standard film and aforesaid standards piece
Place and bond together up and down, in the adhesion zone of upper placement standard film with perfectly aligned in the adhesion zone of lower placement standard film,
It is perfectly aligned refer to it is upper placement standard film adhesion zone four edges line with it is lower place standard film adhesion zone four edges line it is complete
Full weight is closed.And it is upper placement standard film with it is lower placement standard film into opposite direction place, i.e., it is upper placement standard film with
Lower placement standard film angle is 180 °.Then 1kg counterweights are being placed on two standard film being fitted and connected together adhesion zones just
Top, pressure is applied to the silica gel to be measured of adhesion zone, makes the thickness uniformity of silica gel to be measured.
Interval wire is arranged on the effect that support is served between two standard films, can ensure between two standard films
Gap keep uniform, and then cause the silica gel thickness to be measured coated in adhesion zone to keep uniformity.And it is spaced wire
Diameter only has 0.5mm, and the test of silica gel shear strength will not be had an impact.Apply pressure instead to adhesion zone using counterweight to survey
Try operating personnel and pressure is applied to two standard film being fitted and connected together adhesion zones, test sample preparation process can be ensured
In, the pressure that adhesion zone is subject to is identical, uneven lead of exerting oneself for avoiding test operation personnel from occurring during standard film is bonded
Cause layer of silica gel to be measured situation in uneven thickness, reduce due to silica gel to be measured it is in uneven thickness caused by test error.
Referring to Fig. 5, Fig. 5 is the concrete operations flow chart of step 22) in one embodiment of the invention,
Step 22) specifically includes：
S221：Test sample is put into environmental aging case；
S222：Temperature, humidity and the hardening time of set environment ageing oven.
In step S221, the test sample prepared in step S21 is put into environmental aging case, test sample be put into
During environmental aging case, remain that counterweight is placed on directly over adhesion zone.In step S222, ring is put into test sample
After in the ageing oven of border, the temperature that sets environmental aging case is 60 DEG C, humidity 60%RH, hardening time are 8 hours.Environmental aging
Temperature, humidity and the hardening time of case can also be arranged to other specification.Use environment ageing oven carries out curing to silica gel
With generally use normal temperature environment curing, the time of silica gel solidification is effectively reduced, shortens test period.
Foregoing is to example embodiment for example, and being not necessarily to be construed as the limitation to example embodiment.Although
Some example embodiments have been described, but those skilled in the art will be readily understood that, not depart from this substantially
In the case of disclosed novel teachings and advantage, many modifications in example embodiment are possible.Therefore, it is all these to repair
Change and be intended to be included in as defined by the appended claims within the scope of the present disclosure.It will be appreciated, therefore, that foregoing is to each
Kind of example embodiment for example, and should not be construed as limited to disclosed specific example embodiment, and to institute
The modification of disclosed example embodiment and other example embodiments is intended to be included within the scope of claim.
Claims (10)
- A kind of 1. photovoltaic module silica gel testing device for shear strength, it is characterised in that including：The mark that two close fits use Quasi- piece, described two standard pad configurations are identical, and the standard film includes test piece and movable holding piece.
- A kind of 2. photovoltaic module silica gel testing device for shear strength according to claim 1, it is characterised in that the survey Test piece one end is provided with adhesion zone, and the other end is provided with connecting hole；Described movable holding piece one end is provided with connecting hole；The test piece is with the movable holding piece by being connected through the connection ring of the connecting hole.
- 3. a kind of photovoltaic module silica gel testing device for shear strength according to claim 2, it is characterised in that described viscous The surface for meeting area is flat surface；The width of the adhesion zone is identical with the width of the test piece；The length of the adhesion zone and the width of the adhesion zone It is identical.
- A kind of 4. photovoltaic module silica gel testing device for shear strength according to claim 1, it is characterised in that the survey Test piece and the movable holding piece are rectangle；The width of the movable holding piece is less than the width of the test piece；The length of the movable holding piece is less than the test Leaf length.
- A kind of 5. photovoltaic module silica gel testing device for shear strength according to claim 1, it is characterised in that two institutes Standard film is stated to connect by the adhesion zone of described test piece one end.
- 6. utilize the method for testing of the test device described in claim 1-5 any one, it is characterised in that including step：1) setup test sample preparation material；2) test sample is prepared, carries out silica gel curing process；3) tension test, record test peak load are carried out to test sample；4) data processing is carried out to test result.
- 7. the method for testing of the test device according to claim 6 using described in claim 1-5 any one, it is special Sign is that material is prepared described in the step 1) includes silica gel to be measured, standard film, interval wire, counterweight.
- 8. the method for testing of the test device according to claim 6 using described in claim 1-5 any one, it is special Sign is that the step 2) includes：21) test sample is prepared；22) silica gel curing process.
- 9. the method for testing of the test device according to claim 8 using described in claim 1-5 any one, it is special Sign is that the step 21) includes：211) adhesion zone is surface-treated；212) silica gel is smeared；213) wire is spaced to place；214) standard film is bonded.
- 10. the method for testing of the test device according to claim 8 using described in claim 1-5 any one, its It is characterised by, the step 22) includes：221) test sample is put into environmental aging case；222) temperature, humidity and the hardening time of the environmental aging case are set.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710693074.1A CN107478522A (en) | 2017-08-14 | 2017-08-14 | A kind of photovoltaic module silica gel testing device for shear strength and method |
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| CN201710693074.1A CN107478522A (en) | 2017-08-14 | 2017-08-14 | A kind of photovoltaic module silica gel testing device for shear strength and method |
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| CN201710693074.1A Pending CN107478522A (en) | 2017-08-14 | 2017-08-14 | A kind of photovoltaic module silica gel testing device for shear strength and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108693027A (en) * | 2018-03-30 | 2018-10-23 | 康维明工程薄膜（张家港）有限公司 | A kind of high pressure-temperature high humidity acceleration boiling film sample test method |
| CN110672823A (en) * | 2019-10-24 | 2020-01-10 | 江苏赛诺格兰医疗科技有限公司 | Method and tool for testing shrinkage rate of silica gel |
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