CN102661752A - Foil type strain gauge and manufacturing method thereof - Google Patents
Foil type strain gauge and manufacturing method thereof Download PDFInfo
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- CN102661752A CN102661752A CN2012101349260A CN201210134926A CN102661752A CN 102661752 A CN102661752 A CN 102661752A CN 2012101349260 A CN2012101349260 A CN 2012101349260A CN 201210134926 A CN201210134926 A CN 201210134926A CN 102661752 A CN102661752 A CN 102661752A
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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 manufacturing approach thereof, particularly foil strain gauge and manufacturing approach thereof.
Background technology
At present; Known foil resistance strain gauge is the metal foil surface that macromolecule liquid resin insulating material directly is coated on compacting by rolling; Dry back forms the macromolecule dielectric base; On metal foil, adopt photoetching and etching technique to make metal foil form sensitive grid then, form the weldering end again in the sensitive grid rear end and get final product.The defective that this method exists is: production technology falls behind, and efficient is low, and the thickness of substrate is difficult to control, and thickness is irregular everywhere in each substrate in same batch, and the thickness deviation between the different batches is bigger, and the maximum deviation that has has surpassed 30%.Creep appears in strainometer that this method is made easily, and time zero is loose and be unstable, and is comparatively responsive to humidity and temperature variation, causes that easily strainometer change in resistance and zero signal change; Substrate is more crisp, easily fracture.
Summary of the invention
The objective of the invention is to propose a kind of new foil strain gauge and manufacturing approach thereof, to overcome the above-mentioned defective of existing in prior technology.
The technical scheme that realizes above-mentioned purpose is: a kind of foil strain gauge; Comprise substrate and sensitive grid; Said substrate is any macromolecule engineering plastic sheeting in Kapton, poly (ether ether ketone) film, PPS films, the mylar; The surface of film is formed with a treated side after treatment, and sensitive grid is through sticking adhesive layer and the said thin film based bottom secure fit that has treated side; There is sealant on the surface of sensitive grid, and the material of sealant is identical with said base material.
The manufacturing approach of above-mentioned foil strain gauge is: a face of said film substrate is first through plasma or corona treatment; Use coupling agent treatment again; Even epoxy resin coating or phenolic aldehyde-epoxy resin are sticking adhesive layer on its surface or a face at the sensitive grid blank then; The blank of film substrate and sensitive grid is fitted and done cured; Blank with sensitive grid is processed into sensitive grid afterwards, last on the surface coated of sensitive grid epoxy resin or phenolic aldehyde-epoxy resin, sealant is fitted in the above and is done cured.
Base material of the present invention is a kind of high-quality macromolecule engineering plastic sheeting finished product, has avoided the big problem of substrate difficulty of processing, has avoided also that thickness is irregular in the same substrate everywhere, and the thickness of different base is problem not or the like, has improved work efficiency; Through the film substrate after the inventive method processing, the bond strength between its surface and the sticking adhesive layer increases substantially, and the peel strength between sensitive grid and the substrate is increased; Sealant has good protective effect to sensitive grid.Therefore, aspects such as the heat resistance performance of strainometer of the present invention, creep, time zero consistance all are significantly increased.Determination data shows; When temperature constant at 25 ℃; And electric signal output valve that humidity is measured when 40%RH and 2 alternate of 80%RH and temperature constant are at 50 ℃; The electric signal output valve that humidity is measured when 40%RH and 2 alternate of 80%RH compares, and the electric signal output valve variable quantity of strainometer is less than 40ppm, and creep, time more conventional strainometer of zero consistance promote about 30%.
Description of drawings
Fig. 1 is the front elevation of an embodiment of strainometer of the present invention.
Fig. 2 is a sectional schematic diagram embodiment illustrated in fig. 1.
Fig. 3 is the structural drawing behind the peel seal layer embodiment illustrated in fig. 1.
Among the figure: 1. film substrate, 2. treated side, 3. sticking adhesive layer, 4. sensitive grid, 5. sealant.
Embodiment
Below in conjunction with embodiment and accompanying drawing the present invention is further specified.
Shown in Fig. 1-3; Foil strain gauge of the present invention; Substrate is any macromolecule engineering plastic sheeting in Kapton, poly (ether ether ketone) film, PPS films, the mylar, and its surface has formed the treated sides 2 that can combine with sticking adhesive layer 3 brute forces after treatment; Sensitive grid 4 is through the sticking adhesive layer 3 and film substrate 1 secure fit that has treated side 2 of epoxy resin or phenolic aldehyde-epoxy resin; There is sealant 5 on the surface of sensitive grid 4, and the material of sealant 5 is identical with film substrate 1 material, and it passes through sticking adhesive layer 3 secure fit on sensitive grid 4.
The embodiment of method for making of the present invention:
A face of any macromolecule engineering plastic sheeting substrate 1 in Kapton, poly (ether ether ketone) film, PPS films, the mylar is first through plasma or corona treatment; Use coupling agent treatment again; Make it the surface and form treated side 2, evenly being coated with epoxy resin or phenolic aldehyde-epoxy resin on the treated side 2 of film substrate or on the face at sensitive grid 4 blanks, form sticking adhesive layer 3 then; This sticking adhesive layer 3 can combine with treated side 2 brute forces; The film substrate 1 and the blank of sensitive grid are fitted and done cured, and the blank with sensitive grid is processed into sensitive grid 4 afterwards, again epoxy resin or phenolic aldehyde-epoxy resin on the surface coated of sensitive grid 4; Also form sticking adhesive layer 3, be fitted in sealant 5 above the sensitive grid 4 at last and do cured.The present embodiment product compares with the damp and hot false strain test result of existing conventional strainometer:
Creep (%FS) test result compares:
Return zero (%FS) test result relatively:
The strainometer of making according to the method described above can fully satisfy the requirement of current accurate LOAD CELLS, standard transducer, force transducer, stress analysis etc.
Claims (2)
1. foil strain gauge; Comprise substrate and sensitive grid; It is characterized in that: said substrate is any macromolecule engineering plastic sheeting in Kapton, poly (ether ether ketone) film, PPS films, the mylar; The surface of this film is formed with a treated side after treatment, and sensitive grid is through sticking adhesive layer and the said thin film based bottom secure fit that has treated side; There is sealant on the surface of sensitive grid, and the material of sealant is identical with said base material.
2. manufacturing approach of foil strain gauge according to claim 1; It is characterized in that: a face of said film substrate is first through plasma or corona treatment; Use coupling agent treatment again; Then on its surface or a face at the sensitive grid blank evenly epoxy resin coating or phenolic aldehyde-epoxy resin be sticking adhesive layer, with the blank applying of film substrate and sensitive grid and do cured, the blank with sensitive grid is processed into sensitive grid afterwards; Last on the surface coated of sensitive grid epoxy resin or phenolic aldehyde-epoxy resin, the sealant card is combined in above it and does cured.
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 |
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| Publication Number | Publication Date |
|---|---|
| CN102661752A true CN102661752A (en) | 2012-09-12 |
| CN102661752B 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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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615967A (en) * | 2013-11-30 | 2014-03-05 | 中航电测仪器股份有限公司 | High-temperature foil strain gauge and method for manufacturing high-temperature foil strain gauge |
| CN106271424A (en) * | 2016-08-26 | 2017-01-04 | 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 (5)
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| US20040159161A1 (en) * | 2001-07-13 | 2004-08-19 | Barnett John D. | Temperature compensated strain sensing apparatus |
| 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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2012
- 2012-04-25 CN CN201210134926.0A patent/CN102661752B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20040159161A1 (en) * | 2001-07-13 | 2004-08-19 | Barnett John D. | Temperature compensated strain sensing apparatus |
| 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 |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103615967A (en) * | 2013-11-30 | 2014-03-05 | 中航电测仪器股份有限公司 | High-temperature foil strain gauge and method for manufacturing high-temperature foil strain gauge |
| 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 |
| CN106271424A (en) * | 2016-08-26 | 2017-01-04 | 中航电测仪器股份有限公司 | Strain ga(u)ge sealant forming method |
| 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 |
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| Publication number | Publication date |
|---|---|
| CN102661752B (en) | 2015-06-10 |
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