CN101497071A - Anti-corrosion and coating technique for water-proof strain gauge - Google Patents
Anti-corrosion and coating technique for water-proof strain gauge Download PDFInfo
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- CN101497071A CN101497071A CNA2008101670221A CN200810167022A CN101497071A CN 101497071 A CN101497071 A CN 101497071A CN A2008101670221 A CNA2008101670221 A CN A2008101670221A CN 200810167022 A CN200810167022 A CN 200810167022A CN 101497071 A CN101497071 A CN 101497071A
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- strain gauge
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- paint
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Abstract
The invention relates to an anticorrosion coating process for a waterproof strain gauge, which comprises the following steps of: coating an inner anticorrosion layer and an outer anticorrosion layer on the outer surface of a strain foil coated on a sensitive element, wherein the paint for the inner anticorrosion layer is HM110 modified polysulfide sealant and the paint for the outer anticorrosion layer is NJD-3 primary coat, the dosage of the paint for the inner anticorrosion layer is 85 to 100g/m<2>, the edge of coated inner anticorrosion layer is 2 millimeters away from the edge of the strain foil; and naturally drying the paint for 8 hours and continuing to coat an outer protective layer, wherein the thickness of the coated protective layer is 0.2 to 0.4 millimeter. Compared with the prior art, the technical proposal of the invention realizes the direct measurement of the size of the stain of a specimen in a water solution environment.
Description
Technical field
The present invention is a kind of anti-corrosion and coating technique that is used for water-proof strain gauge, belongs to the process of surface treatment technical field.
Background technology
Present widely used strain gauge only is applicable to the strain measurement under the air ambient, for the strain measurement under the corrosive environment, usually way is to make specific corrosive environment box according to the shape of sample to be held on the working portion of sample, and places strain gauge the outside of environment box to measure strain.The shortcoming of this kind strain measurement mode is bigger to the limitation of specimen shape and load-up condition, and owing to is that indirect measurement can be introduced a part of measure error.In order to address these problems, China has developed in 2004 one boat Beijing Research Inst. of Aeronautic Material can directly measure the anti-corrosion strain gauge of strain under corrosive environment, and has applied for the utility model patent (patent No.: ZL200620012079.0).But this anti-corrosion strain gauge can only directly be measured strain under gaseous state or mist attitude environment, can't directly use under aqueous environment.
Summary of the invention
The present invention designs at the deficiency that exists on the prior art just a kind of anti-corrosion and coating technique that is used for water-proof strain gauge is provided, its purpose is to provide a kind of water-proof strain gauge that can directly measure dependent variable under aqueous environment, makes the strain measurement precision under aqueous environment obtain bigger raising.
The objective of the invention is to realize by following technical measures:
Water-proof strain gauge comprises shell, protection beam, sensing element, brachium pontis, the anti-corrosion rule edge of a knife and hook, technical solution of the present invention be to sensing element and on the foil gauge that pastes make water-proofing treatment, it is characterized in that the content of this treatment process is:
Anticorrosive coat and external anti-corrosion layer in the outside of the foil gauge that pastes on sensing element is coated with, wherein:
The used coating of interior anticorrosive coat is HM110 modified polysulfide sealant;
The used coating of external anti-corrosion layer is the NJD-3 primary coat;
The brushing consumption of interior anticorrosive coat is 85～100g/m
2, the coating border of interior anticorrosive coat should be apart from the border of foil gauge 2mm at least, dry naturally then and continue after 8 hours to brush external protection coating, the coating thickness of external protection coating is: 0.2～0.4mm.
With the epoxide-resin glue of normal temperature cure the lead-in wire of strain gauge is protected again.
Should further specify at this and to adopt these two kinds of materials to apply why? on technology process, is there there what characteristic? these characteristics are not to be technical measures conventional in the prior art.Which type of effect can these characteristics produce?
Description of drawings
Fig. 1 is the structural representation of water-proof strain gauge
Fig. 2 is Fig. 1 side view
Fig. 3 is to the structural representation after the water-proofing treatment that sensing element is done
Fig. 4 is the user mode schematic diagram of water-proof strain gauge
The specific embodiment
Describe the present invention below with reference to drawings and Examples:
Shown in accompanying drawing 1～4 example, water-proof strain gauge comprises shell 1, protection beam 2, sensing element 3, brachium pontis 4, the anti-corrosion rule edge of a knife 5 and links up with 6.Be covered with foil gauge 7 on the sensing element 3, adopt the Wheatstone bridge full-bridge to connect to improve precision.The outside of the foil gauge 7 that pastes on sensing element 3 is coated with interior anticorrosive coat (8) and external anti-corrosion layer (9), wherein:
The used coating of interior anticorrosive coat (8) is HM110 modified polysulfide sealant;
The used coating of external anti-corrosion layer (9) is the NJD-3 primary coat;
HM110 modified polysulfide sealant:
Basic composition: component one (basic cream): liquid polysulfide rubber (through modification), reinforcing agent, tackifier.Component two (sulfuration cream): metallic compound, curingprocess rate conditioning agent, plasticising paste making agent, accelerator D.The two mixes use.
The NJD-3 primary coat:
Basic composition: titanate esters, silane compound, dye well organic solvent.
The brushing consumption of interior anticorrosive coat 8 is 85～100g/m
2, the coating border of interior anticorrosive coat 8 should be apart from the border of foil gauge 7 2mm at least, dry naturally then and continue after 8 hours to brush external protection coating (9), the coating thickness of external protection coating (9) is: 0.2～0.4mm.
Epoxide-resin glue with normal temperature cure is protected the lead-in wire 10 of strain gauge.
In order further to strengthen anti-corrosion measure, primary structure elements such as shell 1, brachium pontis 4 are processed with Alcoa, and carry out surface anodization and handle; Protection beam 2, sensing element 3, the edge of a knife 5 and link up with 6 and also select anti-corrosion material processing for use.Anticorrosion strain gauge so just can directly be positioned over and carry out strain measurement in the aqueous environment.Water-proof strain gauge 13 directly is installed on the sample 12, just can in the corrosive environment box 11 of the aqueous solution is housed, directly measures the dependent variable of sample 12, make that the strain measurement precision obtains bigger raising under the aqueous environment.
Technical solution of the present invention compared with prior art is to have realized directly measuring in aqueous environment Sample dependent variable size.
Claims (1)
1. anti-corrosion and coating technique that is used for water-proof strain gauge, it is characterized in that: the outside of the foil gauge (7) that pastes on sensing element (3) is coated with interior anticorrosive coat (8) and external anti-corrosion layer (9), wherein:
The used coating of interior anticorrosive coat (8) is HM110 modified polysulfide sealant;
The used coating of external anti-corrosion layer (9) is the NJD-3 primary coat;
The brushing consumption of interior anticorrosive coat (8) is 85～100g/m
2, the coating border of interior anticorrosive coat (8) should be apart from the border of foil gauge (7) 2mm at least, dry naturally then and continue after 8 hours to brush external protection coating (9), the coating thickness of external protection coating (9) is: 0.2～0.4mm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101670221A CN101497071A (en) | 2008-10-09 | 2008-10-09 | Anti-corrosion and coating technique for water-proof strain gauge |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2008101670221A CN101497071A (en) | 2008-10-09 | 2008-10-09 | Anti-corrosion and coating technique for water-proof strain gauge |
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| CN101497071A true CN101497071A (en) | 2009-08-05 |
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| CNA2008101670221A Pending CN101497071A (en) | 2008-10-09 | 2008-10-09 | Anti-corrosion and coating technique for water-proof strain gauge |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813452A (en) * | 2010-03-30 | 2010-08-25 | 中国船舶重工集团公司第七〇二研究所 | Strain gauge water-proof sealing method and structure thereof |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN104405744A (en) * | 2014-10-15 | 2015-03-11 | 深圳市伊爱高新技术开发有限公司 | Mounting technology of chip type sensor |
| CN107843371A (en) * | 2017-11-09 | 2018-03-27 | 中国航发湖南动力机械研究所 | The installation method of strain gauge |
| CN110591427A (en) * | 2019-08-27 | 2019-12-20 | 中国航发北京航空材料研究院 | Bonding base coat for polysulfide sealant and preparation method thereof |
-
2008
- 2008-10-09 CN CNA2008101670221A patent/CN101497071A/en active Pending
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101813452A (en) * | 2010-03-30 | 2010-08-25 | 中国船舶重工集团公司第七〇二研究所 | Strain gauge water-proof sealing method and structure thereof |
| CN101813452B (en) * | 2010-03-30 | 2011-12-28 | 中国船舶重工集团公司第七〇二研究所 | Strain gauge water-proof sealing method and structure thereof |
| CN101982247A (en) * | 2010-11-15 | 2011-03-02 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN101982247B (en) * | 2010-11-15 | 2013-05-08 | 陕西飞机工业（集团）有限公司 | Method for sealing and preventing integral wing tank of large-medium transport from corrosion |
| CN104405744A (en) * | 2014-10-15 | 2015-03-11 | 深圳市伊爱高新技术开发有限公司 | Mounting technology of chip type sensor |
| CN107843371A (en) * | 2017-11-09 | 2018-03-27 | 中国航发湖南动力机械研究所 | The installation method of strain gauge |
| CN110591427A (en) * | 2019-08-27 | 2019-12-20 | 中国航发北京航空材料研究院 | Bonding base coat for polysulfide sealant and preparation method thereof |
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Open date: 20090805 |