CN102661752B - Manufacturing method of Foil type strain gauge - Google Patents
Manufacturing method of Foil type strain gauge Download PDFInfo
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- CN102661752B CN102661752B CN201210134926.0A CN201210134926A CN102661752B CN 102661752 B CN102661752 B CN 102661752B CN 201210134926 A CN201210134926 A CN 201210134926A CN 102661752 B CN102661752 B CN 102661752B
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- sensitive grid
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- epoxy resin
- strain gauge
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Abstract
The invention discloses a foil type strain gauge and a manufacturing method thereof. A macromolecular engineering plastic film is served as a substrate; a sensitive grid is firmly glued to a film substrate layer through a gluing layer; and a sealing layer is arranged on the surface of the sensitive grid. The manufacturing method comprises the following steps: performing plasma or corona treatment on one surface of the film substrate and then treating the surface by using a coupling reagent; coating epoxy resin or phenolic aldehyde-epoxy resin on the surface of the film substrate or one surface of a sensitive grid blank; gluing and curing the film substrate and the sensitive grid blank; processing the sensitive grid blank into the sensitive grid; and lastly, gluing the sealing layer on the surface of the sensitive grid. According to the manufacturing method provided by the invention, the problems of the substrate of high difficulty in processing, unequal and uneven thickness, and the like, are solved, and the working efficiency is increased; the peel strength between the sensitive grid and the substrate is increased; the sealing layer has an excellent function for protecting the sensitive grid; and various aspects of the strain gauge, such as moisture and thermal resistance, creep deformation, resetting consistency, and the like, are obviously improved.
Description
Technical field
The present invention relates to a kind of strainometer and manufacture method thereof, particularly foil strain gauge and manufacture method thereof.
Background technology
At present, known foil resistance strain gauge is metal foil surface macromolecule liquid resin insulating material being directly coated on compacting by rolling, polymer insulation substrate is formed after dry, then on metal foil, adopt chemical etching technology to make metal foil form sensitive grid, then form welding end in sensitive grid rear end.The defect that this method exists is: production technology falls behind, and efficiency is low, and the thickness of substrate is difficult to control, and in same batch, in each substrate, thickness is irregular everywhere, and the thickness deviation between different batches is larger, and some maximum deviations have exceeded 30%.Easily there is creep in the strainometer that this method makes, back to zero dispersion and unstable, comparatively responsive to humidity and temperature change, easily causes strainometer change in resistance and zero signal to change; Substrate is more crisp, easily ruptures.
Summary of the invention
The object of the invention is to the manufacture method proposing a kind of new foil strain gauge, to overcome the above-mentioned defect existing for prior art.
The technical scheme realizing above-mentioned purpose is: a kind of manufacture method of foil strain gauge, comprise the substrate and sensitive grid that form foil strain gauge, described substrate is Kapton, poly (ether ether ketone) film, PPS (polyphenylene sulfide) films, any one macromolecule engineering plastic sheeting in mylar, there is sealant on the surface of sensitive grid, the material of sealant is identical with described base material, it is characterized in that: by described film substrate face first through plasma or corona treatment, use coupling agent treatment again, then its surface or on a face of sensitive grid blank even spread epoxy resin or phenolic aldehyde-epoxy resin and adhesive-layer, the blank of film substrate and sensitive grid is fitted and done to solidify and processes, afterwards the blank of sensitive grid is processed into sensitive grid, finally epoxy resin or phenolic aldehyde-epoxy resin in the coating of the surface of sensitive grid, sealant is fitted in the above and does solidification process.
Base material of the present invention is a kind of high-quality macromolecule engineering plastic sheeting finished product, avoids the problem that substrate difficulty of processing is large, it also avoid in same substrate that thickness is irregular everywhere, and the thickness of different base not etc. problem, improves work efficiency; Film substrate after the inventive method process, the bond strength between its surface and adhesive-layer increases substantially, and the peel strength between sensitive grid and substrate is increased; Sealant has good protective effect to sensitive grid.Therefore, the aspect such as heat resistance performance, creep, back to zero consistance of strainometer of the present invention is all significantly increased.Determination data shows, when temperature constant is at 25 DEG C, and the electric signal output valve that humidity measures when 40%RH and 80%RH 2 alternately changes and temperature constant are at 50 DEG C, the electric signal output valve that humidity measures when 40%RH and 80%RH 2 alternately changes compares, the electric signal output valve variable quantity of strainometer is less than 40ppm, and creep, the more conventional strainometer of back to zero consistance promote about 30%.
Accompanying drawing explanation
Fig. 1 is the front elevation of a strainometer of the present invention embodiment.
Fig. 2 is sectional schematic diagram embodiment illustrated in fig. 1.
Fig. 3 is the structural drawing after peel seal layer embodiment illustrated in fig. 1.
In figure: 1. film substrate, 2. treated side, 3. adhesive-layer, 4. sensitive grid, 5. sealant.
Embodiment
Below in conjunction with embodiment and accompanying drawing, the present invention will be further described.
As Figure 1-3, foil strain gauge comprises substrate and sensitive grid, substrate is any one macromolecule engineering plastic sheeting in Kapton, poly (ether ether ketone) film, PPS (polyphenylene sulfide) films, mylar, and its surface defines the treated side 2 that can combine with adhesive-layer 3 brute force after treatment; Sensitive grid 4 passes through the adhesive-layer 3 of epoxy resin or phenolic aldehyde-epoxy resin and film substrate 1 secure fit with treated side 2; There is sealant 5 on the surface of quick sensitive grid 4, and the material of sealant 5 is identical with film substrate 1 material, and it passes through adhesive-layer 3 secure fit on sensitive grid 4.
The manufacture method of foil strain gauge of the present invention is:
By Kapton, poly (ether ether ketone) film, PPS (polyphenylene sulfide) films, in mylar, a face of any one macromolecule engineering plastic sheeting substrate 1 is first through plasma or corona treatment, use coupling agent treatment again, make it surperficial formation processing face 2, then epoxy resin or phenolic aldehyde-epoxy resin on even spread on the treated side 2 of film substrate or on a face of sensitive grid 4 blank, form adhesive-layer 3, this adhesive-layer 3 can combine with treated side 2 brute force, film substrate 1 is fitted with the blank of sensitive grid and done to solidify and processes, afterwards the blank of sensitive grid is processed into sensitive grid 4, epoxy resin or phenolic aldehyde-epoxy resin in the coating of the surface of sensitive grid 4 again, also adhesive-layer 3 is formed, finally sealant 5 is fitted in sensitive grid 4 above and do solidification process.
The present embodiment product compares with the damp and hot false strain test result of existing conventional strainometer:
Creep (%FS) test result compares:
Back to zero (%FS) test result compares:
The strainometer manufactured according to the method described above fully can meet the requirement of current precision wight sensor, standard transducer, force snesor, stress analysis etc.
Claims (1)
1. the manufacture method of a foil strain gauge, comprise the substrate and sensitive grid that form foil strain gauge, described substrate is Kapton, poly (ether ether ketone) film, PPS (polyphenylene sulfide) films, any one macromolecule engineering plastic sheeting in mylar, the surface of this film is formed with a treated side after treatment, sensitive grid is by adhesive-layer and the film substrate layer secure fit with treated side, there is sealant on the surface of sensitive grid, the material of sealant is identical with described base material, it is characterized in that: by described film substrate face first through plasma or corona treatment, use coupling agent treatment again, then its surface or on a face of sensitive grid blank even spread epoxy resin or phenolic aldehyde-epoxy resin and adhesive-layer, the blank of film substrate and sensitive grid is fitted and done to solidify and processes, afterwards the blank of sensitive grid is processed into sensitive grid, finally epoxy resin or phenolic aldehyde-epoxy resin in the coating of the surface of sensitive grid, sealant is fitted in the above and does solidification process.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210134926.0A CN102661752B (en) | 2012-04-25 | 2012-04-25 | Manufacturing method of Foil type strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210134926.0A CN102661752B (en) | 2012-04-25 | 2012-04-25 | Manufacturing method of Foil type strain gauge |
Publications (2)
| Publication Number | Publication Date |
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| CN102661752A CN102661752A (en) | 2012-09-12 |
| CN102661752B true CN102661752B (en) | 2015-06-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201210134926.0A Active CN102661752B (en) | 2012-04-25 | 2012-04-25 | Manufacturing method of Foil type strain gauge |
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Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615967B (en) * | 2013-11-30 | 2016-09-21 | 中航电测仪器股份有限公司 | A kind of high temperature foil strain gauge and manufacture method thereof |
| CN106271424B (en) * | 2016-08-26 | 2018-08-24 | 中航电测仪器股份有限公司 | Strain ga(u)ge sealant forming method |
| CN111006695A (en) * | 2019-12-02 | 2020-04-14 | 广东微应变传感科技有限公司 | Processing method of strainometer with self-adhesive |
| CN112525064A (en) * | 2020-11-16 | 2021-03-19 | 中航电测仪器股份有限公司 | Self-contained medium-temperature strain gauge for semi-cured adhesive layer and use method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201093998Y (en) * | 2007-10-16 | 2008-07-30 | 中航电测仪器股份有限公司 | Polyimide film substrate deformeter |
| CN201093999Y (en) * | 2007-10-16 | 2008-07-30 | 中航电测仪器股份有限公司 | Glass fiber reinforcement substrate deformeter |
| CN101614522A (en) * | 2009-07-31 | 2009-12-30 | 中国航天科技集团公司第四研究院第四十四研究所 | Manufacturing method of resistance strain gage based on ion beam technology |
| CN201583247U (en) * | 2010-01-06 | 2010-09-15 | 中航电测仪器股份有限公司 | Double-output strainometer |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2369889B (en) * | 2001-07-13 | 2004-06-09 | John David Barnett | Strain sensing installation |
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2012
- 2012-04-25 CN CN201210134926.0A patent/CN102661752B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201093998Y (en) * | 2007-10-16 | 2008-07-30 | 中航电测仪器股份有限公司 | Polyimide film substrate deformeter |
| CN201093999Y (en) * | 2007-10-16 | 2008-07-30 | 中航电测仪器股份有限公司 | Glass fiber reinforcement substrate deformeter |
| CN101614522A (en) * | 2009-07-31 | 2009-12-30 | 中国航天科技集团公司第四研究院第四十四研究所 | Manufacturing method of resistance strain gage based on ion beam technology |
| CN201583247U (en) * | 2010-01-06 | 2010-09-15 | 中航电测仪器股份有限公司 | Double-output strainometer |
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| CN102661752A (en) | 2012-09-12 |
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