CN106568378A - Attach-type radius of curvature measuring method - Google Patents
Attach-type radius of curvature measuring method Download PDFInfo
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- CN106568378A CN106568378A CN201610959755.3A CN201610959755A CN106568378A CN 106568378 A CN106568378 A CN 106568378A CN 201610959755 A CN201610959755 A CN 201610959755A CN 106568378 A CN106568378 A CN 106568378A
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- Prior art keywords
- curvature
- laminated film
- compliant conductive
- conductive laminated
- resistance
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B7/00—Measuring arrangements characterised by the use of electric or magnetic techniques
- G01B7/28—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures
- G01B7/293—Measuring arrangements characterised by the use of electric or magnetic techniques for measuring contours or curvatures for measuring radius of curvature
Abstract
The invention discloses an attach-type radius of curvature measuring method; the method can attach a flexible conductive composite film on a tested curved surface without being affected by external shocks and damaging the tested surface, thus simply and fast measuring the radius of curvature of the tested curved surface; in addition, the method can monitor an object curvature dynamic changing process in real time; the flexible conductive composite film is excellent in repeated performance, stable in performance after multi-time bending tests, so the radius of curvature measure result accuracy cannot be affected; according to test results, the resistance-radius of curvature relation curve relation curve can basically remain unchanged after the flexible conductive composite film is repeatedly bended for 500 times; the flexible conductive composite film is stable in performance after being repeatedly used for a half year, and the resistance rate of change-curvature relation curve can basically keep unchanged. The measuring method is simple and easy, and the employed flexible conductive composite film is simple in making process and low in cost, thus providing excellent practical values and application prospects.
Description
Technical field
The present invention relates to curvature radius measurement method, and in particular to a kind of sticking type curvature radius measurement method.
Background technology
Either in commercial production or daily life, the measurement of radius of curvature is more universal and important work.
Such as in Micrometer-Nanometer Processing Technology, the measurement of various curved workpieces slight radius of curvature can be related to.In optical manufacturing field, than
Such as micro lens, radius of curvature is to weigh the key technical indexes of optical element.In the industrial production, the survey of part curvature radius
Amount method is broadly divided into two classes：Contact method and eyes with non-contact method.Wherein contact method needs probe to slide on surface to be measured, easily causes
Tested surface damage, and measurement needs longer time, is not suitable for quick, large batch of Site Detection, is also not suitable for quickly
Batch detection.Noncontact measuring method mainly has two methods of auto-collimating microscope measurement method and interferometer measurement method, it is desirable to be measured
Face first passes through polishing in advance, and tests by shaking the working environment that affected substantially to be not suitable for scene, apparatus expensive, same discomfort
Close quick batch detection.
In addition, in the last few years, flexible electronic device, intelligent wearable device started to rise, flexible device bend state
Monitor to become and be different from one of important parameter of conventional electronics.While the real-time monitoring demand of human body limb case of bending
New challenge it is also proposed to wearable intelligent artifact function.Therefore, explore new real-time curvature radius measurement method to have
Very big scientific value and practical value.
Therefore, the present invention proposes a kind of sticking type curvature radius measurement method.
The content of the invention
The technical problem to be solved is, for the deficiencies in the prior art, there is provided a kind of sticking type radius of curvature
Measuring method, can be under the conditions of not receiving external vibration effects, not damaging measured surface, by compliant conductive laminated film is pasted
Curved surface to be measured is invested, simple, the quick measurement to surface curvature to be measured is realized, additionally, can be real-time by the inventive method
The dynamic changing process of monitoring object curvature.
The present invention solve the technical scheme that adopted of above-mentioned technical problem for：A kind of sticking type curvature radius measurement method,
Comprise the following steps：
（1）Prepare one block of compliant conductive laminated film, connect an electrode respectively at the two ends of the compliant conductive laminated film, and
Two electrodes are connected on an ohmmeter, the initial resistance R when compliant conductive laminated film keeps flat is measured0；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
Preferably, described compliant conductive laminated film includes high molecular film material substrate and is compound in the macromolecule
The nano silver wire conductive network of thin-film material substrate single side surface, the thickness of described high molecular film material substrate is 0.1 ~ 2
Mm, the surface density of described nano silver wire conductive network is 10 ~ 300 mg/m2。
Preferably, described nano silver wire conductive network is by 40 ~ 150 nm of diameter, the silver nanoparticle of 20 ~ 150 μm of length
Line is constituted.
Preferably, the preparation process of described compliant conductive laminated film is：In the single side surface of smooth substrate of glass
Multiple spin coating contains the nano silver wire ethanol solution of finely dispersed nano silver wire, by substrate of glass 60 ~ 90 after each spin coating
At DEG C dry, after spin coating all terminates, by substrate of glass at 150 ~ 250 DEG C 15 ~ 40 min of heat treatment, i.e., in substrate of glass
Surface prepare described nano silver wire conductive network；Then gluey high molecular film material is coated by the tape casting
On the surface for being provided with nano silver wire conductive network of described substrate of glass, the hereafter heat treatment 30 ~ 240 at 40 ~ 120 DEG C
Min film-formings, obtain described compliant conductive laminated film after taking off film.
Preferably, described high molecular film material is epoxy resin, polymethyl methacrylate, polyaniline and gathers right
Any one in PET.
Compared with prior art, it is an advantage of the current invention that：Sticking type curvature radius measurement method disclosed by the invention, energy
Enough under the conditions of not receiving external vibration effects, not damaging measured surface, by compliant conductive laminated film is attached at song to be measured
Face, realizes simple, the quick measurement to surface curvature to be measured, additionally, can real-time monitoring object song by the inventive method
The dynamic changing process of rate.Used by the inventive method, compliant conductive laminated film Repeatability is excellent, property after multiple crooked test
Can be stable, the accuracy of radius of curvature measurement result is not affected, be experiment proves that, the compliant conductive laminated film is through 500 times
After repeated flex, resistance-radius of curvature relation curve is held essentially constant, while through test, the flexibility after reusing half a year
The stable performance of conductive composite film, its resistance change rate-curvature relationship curve are held essentially constant.Measuring method letter of the present invention
It is single convenient, it is the preparation process is simple of compliant conductive laminated film used by which, with low cost, with good practical value and application
Prospect.
Description of the drawings
Fig. 1 is the resistance-radius of curvature relation curve of compliant conductive laminated film in embodiment 1-4 set up；
Fig. 2 is the resistance change rate-curvature relationship curve of compliant conductive laminated film in embodiment 2, and wherein solid line is what is set up
The resistance change rate of compliant conductive laminated film-curvature relationship curve in embodiment 2, dotted line are multiple for compliant conductive in embodiment 2
Close film bends repeatedly and reuse the resistance change rate-curvature relationship curve of half a year rear film；
Fig. 3 is compliant conductive laminated film bending 300 times, 500 rear film change in resistance situations in embodiment 2, is received with silver
Rice noodle/PET change in resistance is used as reference.
Specific embodiment
The present invention is described in further detail below in conjunction with accompanying drawing embodiment.
The sticking type curvature radius measurement method of embodiment 1, comprises the following steps：
（1）Prepare one block of compliant conductive laminated film, the preparation process of the compliant conductive laminated film is：Take 4 cm × 4 cm's
Smooth substrate of glass, is dried after being put into supersonic cleaning machine 10 min of ultrasound, is then taken in right amount containing finely dispersed with liquid-transfering gun
The nano silver wire ethanol solution of nano silver wire, is added dropwise over the nano silver wire ethanol solution on the glass substrate, repeats spin coating 8
Secondary, the rotating speed of spin coating is 1500 rpm, and substrate of glass is heated at 80 DEG C 30 s drying after each spin coating, and spin coating is all tied
Shu Hou, by substrate of glass at 200 DEG C 20 min of heat treatment, i.e., prepare nano silver wire on the surface of substrate of glass conductive
Network, measures its surface density for 69 mg/m2, square resistance is 31 Ω/；Then pass through the tape casting by 800 mg gluey ring
Oxygen tree fat is coated in the surface for being provided with nano silver wire conductive network of substrate of glass, and hereafter the baking oven interior-heat at 80 DEG C is processed
120 min film-formings, obtain compliant conductive laminated film after taking off film；Connect at the two ends of the compliant conductive laminated film respectively
An electrode is connect, and two electrodes are connected on an ohmmeter, measure initial when the compliant conductive laminated film keeps flat
Resistance R0, measure R0=31 Ω；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
The sticking type curvature radius measurement method of embodiment 2, comprises the following steps：
（1）Prepare one block of compliant conductive laminated film, the preparation process of the compliant conductive laminated film is：Take 4 cm × 4 cm's
Smooth substrate of glass, is dried after being put into supersonic cleaning machine 10 min of ultrasound, is then taken in right amount containing finely dispersed with liquid-transfering gun
The nano silver wire ethanol solution of nano silver wire, is added dropwise over the nano silver wire ethanol solution on the glass substrate, repeats spin coating 10
Secondary, the rotating speed of spin coating is 1500 rpm, and substrate of glass is heated at 80 DEG C 30 s drying after each spin coating, and spin coating is all tied
Shu Hou, by substrate of glass at 200 DEG C 20 min of heat treatment, i.e., prepare nano silver wire on the surface of substrate of glass conductive
Network, measures its surface density for 88 mg/m2, square resistance is 25 Ω/；Then 800 mg gluey is gathered by the tape casting
Aniline is coated in the surface for being provided with nano silver wire conductive network of substrate of glass, and hereafter the baking oven interior-heat at 80 DEG C processes 120
Min film-formings, obtain compliant conductive laminated film after taking off film；Connect one respectively at the two ends of the compliant conductive laminated film
Individual electrode, and two electrodes are connected on an ohmmeter, measure the initial resistance when compliant conductive laminated film keeps flat
R0, measure R0=25 Ω；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
The sticking type curvature radius measurement method of embodiment 3, comprises the following steps：
（1）Prepare one block of compliant conductive laminated film, the preparation process of the compliant conductive laminated film is：Take 4 cm × 4 cm's
Smooth substrate of glass, is dried after being put into supersonic cleaning machine 10 min of ultrasound, is then taken in right amount containing finely dispersed with liquid-transfering gun
The nano silver wire ethanol solution of nano silver wire, is added dropwise over the nano silver wire ethanol solution on the glass substrate, repeats spin coating 12
Secondary, the rotating speed of spin coating is 1500 rpm, and substrate of glass is heated at 80 DEG C 30 s drying after each spin coating, and spin coating is all tied
Shu Hou, by substrate of glass at 200 DEG C 20 min of heat treatment, i.e., prepare nano silver wire on the surface of substrate of glass conductive
Network, measures its surface density for 109 mg/m2, square resistance is 16 Ω/；Then pass through the tape casting by 800 mg glues
Polymethyl methacrylate is coated in the surface for being provided with nano silver wire conductive network of substrate of glass, hereafter in 80 DEG C of baking
Case interior-heat processes 120 min film-formings, and compliant conductive laminated film is obtained after taking off film；In the compliant conductive laminated film
Two ends connect an electrode respectively, and two electrodes are connected on an ohmmeter, measure the compliant conductive laminated film and put down
Initial resistance R when putting0, measure R0=16 Ω；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
The sticking type curvature radius measurement method of embodiment 4, comprises the following steps：
（1）Prepare one block of compliant conductive laminated film, the preparation process of the compliant conductive laminated film is：Take 4 cm × 4 cm's
Smooth substrate of glass, is dried after being put into supersonic cleaning machine 10 min of ultrasound, is then taken in right amount containing finely dispersed with liquid-transfering gun
The nano silver wire ethanol solution of nano silver wire, is added dropwise over the nano silver wire ethanol solution on the glass substrate, repeats spin coating 12
Secondary, the rotating speed of spin coating is 1500 rpm, and substrate of glass is heated at 80 DEG C 30 s drying after each spin coating, and spin coating is all tied
Shu Hou, by substrate of glass at 200 DEG C 20 min of heat treatment, i.e., prepare nano silver wire on the surface of substrate of glass conductive
Network, measures its surface density for 159 mg/m2, square resistance is 9 Ω/；Then 800 mg gluey is gathered by the tape casting
Ethylene glycol terephthalate is coated in the surface for being provided with nano silver wire conductive network of substrate of glass, hereafter at 80 DEG C
Baking oven interior-heat processes 120 min film-formings, and compliant conductive laminated film is obtained after taking off film；In the compliant conductive laminated film
Two ends connect an electrode respectively, and two electrodes are connected on an ohmmeter, measure the compliant conductive laminated film
Initial resistance R when keeping flat0, measure R0=9 Ω；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
During preparing compliant conductive laminated film, increase spin coating number of times, different nano silver wire surface densities can be prepared
Conductive network structure, the nano silver wire conductive network are made up of the nano silver wire of 40 ~ 150 nm of diameter, 20 ~ 150 μm of length, high
The thickness of molecular film material substrate is generally 0.1 ~ 2 mm.
In embodiment 1-4 of foundation, the resistance of compliant conductive laminated film-radius of curvature relation curve is shown in Fig. 1, foundation
In embodiment 2, the resistance change rate of compliant conductive laminated film-curvature relationship curve is shown in solid line in Fig. 2, and in embodiment 2, flexibility is led
Resistance change rate-curvature relationship the curve replied conjunction film bends by cable repeatedly and reuse half a year rear film is shown in dotted line in Fig. 2.It is real
Apply compliant conductive laminated film in example 2（That is AgNWs/Resin）Bending 300 times, 500 rear film change in resistance situations are shown in figure
3, with nano silver wire/PET（That is AgNWs/PET）Change in resistance is used as reference.
From Fig. 1-Fig. 3, used by the inventive method, compliant conductive laminated film Repeatability is excellent, multiple crooked test
Stable performance afterwards, does not affect the accuracy of radius of curvature measurement result；The compliant conductive laminated film is through 500 repeated flex
Resistance-radius of curvature relation curve is held essentially constant afterwards, while through test after reusing half a year, the compliant conductive is combined
The stable performance of thin film, its resistance change rate-curvature relationship curve are held essentially constant.
Claims (5)
1. a kind of sticking type curvature radius measurement method, it is characterised in that：Comprise the following steps：
（1）Prepare one block of compliant conductive laminated film, connect an electrode respectively at the two ends of the compliant conductive laminated film, and
Two electrodes are connected on an ohmmeter, the initial resistance R when compliant conductive laminated film keeps flat is measured0；
（2）The alternating bending compliant conductive laminated film, measures and records compliant conductive laminated film during bending in various degree
Radius of curvature, while the resistance R of the compliant conductive laminated film under different curvature radius is measured and recorded by ohmmeter, build
Resistance-radius of curvature the relation curve of the compliant conductive laminated film is found, the resistance for resettling the compliant conductive laminated film becomes
Rate-curvature relationship curve, wherein resistance change rate are R/R0；
（3）The compliant conductive laminated film is attached at into curved surface to be measured, the resistance value of now compliant conductive laminated film is measured, and
Calculate the resistance change rate of now compliant conductive laminated film, then by calculated resistance change rate and step（2）Set up
Resistance change rate-curvature relationship curve is compared, and obtains the curvature of curved surface to be measured, takes the inverse of curvature, curved surface as to be measured
Radius of curvature.
2. a kind of sticking type curvature radius measurement method according to claim 1, it is characterised in that：Described compliant conductive
Laminated film includes high molecular film material substrate and is compound in the nano silver wire of the high molecular film material substrate single side surface
Conductive network, the thickness of described high molecular film material substrate is 0.1 ~ 2 mm, the face of described nano silver wire conductive network
Density is 10 ~ 300 mg/m2。
3. a kind of sticking type curvature radius measurement method according to claim 2, it is characterised in that：Described nano silver wire
Conductive network is made up of the nano silver wire of 40 ~ 150 nm of diameter, 20 ~ 150 μm of length.
4. a kind of sticking type curvature radius measurement method according to claim 2, it is characterised in that：Described compliant conductive
The preparation process of laminated film is：Contain finely dispersed nano silver wire in the single side surface multiple spin coating of smooth substrate of glass
Substrate of glass is dried at 60 ~ 90 DEG C after each spin coating by nano silver wire ethanol solution, after spin coating all terminates, by glass base
Bottom 15 ~ 40 min of heat treatment at 150 ~ 250 DEG C, i.e., prepare described nano silver wire on the surface of substrate of glass conductive
Network；Then nano silver wire is provided with by what gluey high molecular film material was coated in described substrate of glass by the tape casting
The surface of conductive network, hereafter 30 ~ 240 min film-formings of heat treatment at 40 ~ 120 DEG C obtain described soft after taking off film
Property conductive composite film.
5. a kind of sticking type curvature radius measurement method according to claim 2, it is characterised in that：Described macromolecule is thin
Membrane material is any one in epoxy resin, polymethyl methacrylate, polyaniline and polyethylene terephthalate.
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| CN109029801A (en) * | 2018-05-25 | 2018-12-18 | 苏州大学 | A kind of compound membrane pressure sensor of metal nanometer line and preparation method thereof |
| CN112033277A (en) * | 2020-09-08 | 2020-12-04 | 东南大学 | Curvature sensor based on paper folding structure |
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Application publication date: 20170419 |