CN105352802A - Lamellar optical cement elasticity modulus testing method and sample - Google Patents
Lamellar optical cement elasticity modulus testing method and sample Download PDFInfo
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- CN105352802A CN105352802A CN201510845871.8A CN201510845871A CN105352802A CN 105352802 A CN105352802 A CN 105352802A CN 201510845871 A CN201510845871 A CN 201510845871A CN 105352802 A CN105352802 A CN 105352802A
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Abstract
It can not accurately reflect the elasticity modulus of optical cement and the relationship of thickness, curing process for existing method, the invention proposes a kind of lamelliform optical cement elasticity modulus test method and samples. The method includes 3 steps, and according to formula
Optical cement elastic modulus E 3 is calculated. The sample is made of bottom glass from bottom to top, optical adhesive layer, upper layer glass. Beneficial technical effect: optical cement is solidificated between 2 blocks of glass with fixed interval (FI), is fabricated to glass-lamelliform optical cement-glass sample by the characteristics of present invention is according to actual production technology, can be utmostly close to actual parameter status. In addition, bulk strain of the present invention by test sample, and then the elasticity modulus of lamelliform optical cement is extrapolated indirectly, to better solve caused display problem in touch screen bonding process.
Description
Technical field
The invention belongs to technical field of liquid crystal display, be specifically related to a kind of bonding lamelliform optical cement elastic modulus method of testing and sample.
Background technology
Liquid crystal display (LiquidCrystalDisplay, LCD), through the development of decades, has become the mainstream technology of flat pannel display.Along with the appearance of smart mobile phone taking i Phone as representative, touch function has become the standard configuration of smart mobile phone or display.Touch-screen is bonded on liquid crystal display by general employing optical cement.Optical cement thickness normally 100 ~ 300um, in lamelliform.Because optical cement is between touch-screen and liquid crystal display, the elastic modulus of optical cement has larger impact for touch characteristic and display characteristic.
In actual bonding process, for the liquid crystal display of certain model, in order to obtain best optical effect, need test of many times determination optical cement thickness and curing process.Find in test: (1), for fixing liquid crystal display, when optical cement curing process is identical, changes optical cement thickness and the smart mobile phone after binding touch-screen can be caused to occur that the probability of optical speckle raises greatly; (2), for fixing liquid crystal display, when optical cement thickness is identical, curing process change can cause the smart mobile phone after binding touch-screen to occur that the probability of optical speckle raises greatly; (3) identical optical cement thickness and curing process, adopt the liquid crystal display (even if liquid crystal display all nominals index is all identical) of different manufacturers, and the smart mobile phone after binding touch-screen occurs that the probability of optical speckle raises greatly.These all illustrate the display performance that will ensure the smart mobile phone after binding touch-screen, need the strict mechanics parameter of matching optics glue and the mechanics parameter of liquid crystal display.As can be seen from (1) and (2) above, the thickness of optical cement and curing process all can affect its mechanics parameter.Therefore know the mechanics parameter (elastic modulus) of the optical cement of specific thicknesses, specific curing process in advance, analyze mechanical characteristic when coordinating different liquid crystal display, greatly can improve product yield, reduce production cost.
For verifying the impact of optical cement thickness further, the optical cement that thickness is respectively 100um, 200um, 400um, 800um, 1mm, 2mm is have cured between 2 layers of glass, form the testing experiment of three layers, specimen surface is pasted with foil gauge, be fixed on drawing machine, when applying identical pulling force, the output of the foil gauge on each specimen surface has relatively big difference, illustrate that the elastic modulus of the optical cement of different-thickness is different, namely the elastic modulus of optical cement is relevant with thickness.Existing in the theoretic knowledge of optical cement, all think once optical cement has solidified, its characteristic (comprising elastic modulus, Poisson ratio etc.) also just secures, can not along with changes such as the shapes of sample.
In existing method of testing, usually needing to make thickness is the sample of 5mm, and the elastic modulus obtained thus may be used in the application of each thickness, shape in reality.As can be seen from test above, when optical cement is the lamelliform of a hundreds of micron, its elastic modulus and thickness have higher correlativity, and the elastic modulus that 5mm sample records is not useable for the optical cement layer that thickness is a hundreds of micron.Therefore need to find and new can obtain the method for testing that thickness is the lamelliform optical cement of a hundreds of micron." a kind of bonding attached energy in surface of soft material and the measuring method of elastic modulus " (grant number: CN102183441B) and " method of testing coating elastic modulus " (application number: CN103528885A) discloses the method for testing of the elastic modulus for sheet-like materials.In " a kind of bonding attached energy in surface of soft material and the measuring method of elastic modulus " (grant number: CN102183441B), its measured object mass-energy is attached directly in stiff base, and measuring sonde directly contacts with measured matter.In " method of testing coating elastic modulus " (application number: CN103528885A), tested coating material is also be painted on sample, then will there is the sample of tested coating and not have cated antithesis sample to bond together, 2 antithesis samples are bonded together simultaneously, be subject to load displacement curve when stretching by comparative analysis 2 various sample, obtain the elastic modulus of coating.Disclosed in these 2 patents, method all cannot for the measurement of lamelliform optical cement elastic modulus.Main cause is that the optical cement of current bonding touch-screen is the liquid of A and B component mostly, by becoming the solid with stronger adhesive property after heat or ultraviolet curing after 2 kinds of components fully mix.Because the elastic modulus of optical cement is relevant with thickness, therefore when making sample, must the thickness of optics of liquids glue of control A and B component, be then cured.That is solidification after optical cement be fixed on there is certain interval 2 laminar substrates between.Owing to directly cannot touch optical cement, 2 methods above all can not be used for the elastic modulus measuring lamelliform optical cement.
Summary of the invention
In view of existing method accurately cannot reflect the relation of the elastic modulus of optical cement and thickness, curing process, and existing measuring method cannot accurately detect thickness be in a test difficult problem for the elastic modulus of the optical cement of the fixed thickness of 100 ~ 360 microns, this patent proposes a kind of method of testing and sample block of simple to operation, good reliability.Specific as follows:
a kind of lamelliform optical cement elastic modulus method of testing,described optical cement, when daily accumulating, is divided into A group reagent and B group reagent, when it is desired to be used, uses after A group reagent and the mixing of B group reagent; Carry out as follows:
The sample of step one, making three-decker:
1.1 cleaning bottom glass and upper strata glass;
1.2, by the optical cement A group reagent of accumulating state and the mixing of optical cement B group reagent, fully to stir, de-bubble, form liquid optical cement;
The thickness of optical cement is preset between 100 to 360um by 1.3;
1.4 are fixed with adhesive tape respectively on four limits of bottom top surface of glass; The optical cement thickness that thickness and the step 1.3 of described adhesive tape are determined is identical; The region that described adhesive tape surrounds is in order to place liquid optical cement;
1.5 liquid optical cements step 1.2 obtained are poured on bottom center of glass region, and static placement, until liquid optical cement freely trickles and covers bottom glass completely; Unnecessary liquid optical cement flows out from the end face of adhesive tape;
1.6 upper strata glass is placed on the bottom glass that is coated with adhesive tape and liquid optical cement and top, form the semi-manufacture of the 3-tier architecture of " bottom glass+liquid optical cement+upper strata glass ";
The semi-manufacture of 1.7 3-tier architectures step 1.6 obtained carry out high temperature or ultra-violet curing, make the liquid optical cement between bottom glass and upper strata glass become optical cement layer; Described optical cement layer is the optical cement of solid; Namely the sample of three-decker is obtained; The structure of the sample of described three-decker is " bottom glass+optical cement layer+upper strata glass ";
Step 2, tension test is carried out to the sample of three-decker:
2.1 on the end face of the sample of three-decker or the central area of bottom surface bonding foil gauge, subsequently, the sample of the three-decker of bonding foil gauge is vertically placed;
2.2 will be bonded with foil gauge and the bottom of the sample of the three-decker of vertically placing, top are fixed together with the lower chuck of drawing machine, upper grip respectively;
Foil gauge is accessed strain acquisition system by lead-in wire by 2.3;
2.4 by drawing machine, applies fixing tensile force f to the sample of the three-decker being bonded with foil gauge; The scope of tensile force f is between 50 to 500N;
2.5 records are bonded with the strain numerical value ε of sample under tensile force f of the three-decker of foil gauge;
The optical cement elastic modulus of step 3, calculating three layers of sample:
According to formula
calculate optical cement elastic modulus E 3,
In formula: E1, E2, E3 are the elastic modulus of bottom glass, upper strata glass, optical cement respectively, E1 and E2 adopts the elastic modulus of simple glass, S1, S2, S3 are the stressed sectional area of bottom glass, upper strata glass, optical cement respectively, Si=Wi × Di, i=1,2,3, Wi are the width on limit, chuck place of bottom glass, upper strata glass, optical cement respectively, Di is the thickness of bottom glass, upper strata glass, optical cement respectively, i.e. S1=W1 × D1, S2=W2 × D2, S3=W3 × D3.
adopt the sample that a kind of lamelliform optical cement elastic modulus method of testing of the present invention obtains:
The sample of described three-decker is made up of bottom glass 1 from bottom to top, optical cement layer 2, upper strata glass 3; Wherein,
A () is as the Diagonal Dimension≤264mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 250um to 300um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 200um to 250um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 150um to 200um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 100um to 150um;
(b) when bottom glass or upper strata glass Diagonal Dimension > 264mm also≤534mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 270um to 320um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 220um to 270um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 170um to 220um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 120um to 170um;
(c) when bottom glass or upper strata glass Diagonal Dimension > 534mm also≤990mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 290um to 340um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 240um to 290um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 190um to 240um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 140um to 190um;
D () is as the Diagonal Dimension > 990mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 310um to 360um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 260um to 310um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 210um to 260um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 160um to 210um.
useful technique effect
Optical cement, according to the feature of the production technology of reality, is solidificated between 2 blocks of glass with fixed interval (FI) by the present invention, is made into the sample of glass-lamelliform optical cement-glass, can at utmost close to actual parameter status.In addition, the present invention by the bulk strain of test sample, and then extrapolates the elastic modulus of lamelliform optical cement indirectly, thus solves the display problem caused in touch-screen bonding process better.
When the thickness that the present invention is directed to optical cement is hundreds of micron, its elastic modulus and thickness have the problem of correlativity, propose a kind of consistent with actual production technique, simple and practical method of testing.The method adopts common mechanical stretch equipment to carry out indirectly testing, first the sample of the three-decker of glass+optical cement+glass all identical with actual product thickness and technique is made, by the power-strain stress relation adopting common drawing machine to test three layers of sample, indirectly derive the elastic modulus of lamelliform optical cement, manufacturer is not needed to increase extra testing apparatus, derivation method is simple, be easy to operation, has larger actual application value.
Adopt the sample that the present invention obtains, for the product that loseless method obtains, and its elastic mould value measuring by precision, when doing follow-up experiment with it or detect, to greatest extent the single file modulus of reality can be mated truly with performance parameters, thus the propelling effect of promotion can be played the stable of production technology and raising, technical research and optimization.
Accompanying drawing explanation
Fig. 1 is process flow diagram of the present invention.
Fig. 2 is stretching of the present invention-strain-gauge test system schematic.
Fig. 3 is the schematic diagram of sticky note adhesive tape in Fig. 1.
The cut-open view of Fig. 4 sample obtained by the present invention.
In figure, the sample 6 of bottom glass 1, optical cement layer 2, upper strata glass 3, liquid optical cement 4, adhesive tape 5, three-decker, upper grip 7, lower chuck 8, strain acquisition system 9, foil gauge 10.
Embodiment
Now be described with reference to the accompanying drawings design feature of the present invention and ins and outs.
See Fig. 1, a kind of lamelliform optical cement elastic modulus method of testing, described optical cement, when daily accumulating, is divided into A group reagent and B group reagent, when it is desired to be used, uses after A group reagent and the mixing of B group reagent; Carry out as follows:
The sample of step one, making three-decker:
1.1 cleaning bottom glass and upper strata glass;
1.2, by the optical cement A group reagent of accumulating state and the mixing of optical cement B group reagent, fully to stir, de-bubble, form liquid optical cement;
The thickness of optical cement is preset between 100 to 360um by 1.3;
1.4 are fixed with adhesive tape respectively on four limits of bottom top surface of glass; The optical cement thickness that thickness and the step 1.3 of described adhesive tape are determined is identical; The region that described adhesive tape surrounds is in order to place liquid optical cement; As shown in Figure 3;
1.5 liquid optical cements step 1.2 obtained are poured on bottom center of glass region, and static placement, until liquid optical cement freely trickles and covers bottom glass completely; Unnecessary liquid optical cement flows out from the end face of adhesive tape;
1.6 upper strata glass is placed on the bottom glass that is coated with adhesive tape and liquid optical cement and top, form the semi-manufacture of the 3-tier architecture of " bottom glass+liquid optical cement+upper strata glass ";
The semi-manufacture of 1.7 3-tier architectures step 1.6 obtained carry out high temperature or ultra-violet curing, make the liquid optical cement between bottom glass and upper strata glass become optical cement layer; Described optical cement layer is the optical cement of solid; Namely the sample of three-decker is obtained; The structure of the sample of described three-decker is " bottom glass+optical cement layer+upper strata glass ";
Step 2, tension test is carried out to the sample of three-decker, as shown in Figure 2:
2.1 on the end face of the sample of three-decker or the central area of bottom surface bonding foil gauge, subsequently, the sample of the three-decker of bonding foil gauge is vertically placed;
2.2 will be bonded with foil gauge and the bottom of the sample of the three-decker of vertically placing, top are fixed together with the lower chuck of drawing machine, upper grip respectively;
Foil gauge is accessed strain acquisition system by lead-in wire by 2.3;
2.4 by drawing machine, applies fixing tensile force f to the sample of the three-decker being bonded with foil gauge; The scope of tensile force f is between 50 to 500N;
2.5 records are bonded with the adaptability to changes numerical value ε of sample under tensile force f of the three-decker of foil gauge;
The optical cement elastic modulus of the sample of step 3, calculating three-decker:
According to formula
calculate optical cement elastic modulus E 3,
In formula: E1, E2, E3 are the elastic modulus of bottom glass, upper strata glass, optical cement respectively, E1 and E2 adopts the elastic modulus of simple glass, S1, S2, S3 are the stressed sectional area of bottom glass, upper strata glass, optical cement respectively, Si=Wi × Di, i=1,2,3, Wi are the width on limit, chuck place of bottom glass, upper strata glass, optical cement respectively, Di is the thickness of bottom glass, upper strata glass, optical cement respectively, i.e. S1=W1 × D1, S2=W2 × D2, S3=W3 × D3.
Furtherly, in step 1.3, the thickness of optical cement confirms as follows:
A () is as the Diagonal Dimension≤264mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 250um to 300um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 200um to 250um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 150um to 200um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 100um to 150um;
(b) when bottom glass or upper strata glass Diagonal Dimension > 264mm also≤534mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 270um to 320um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 220um to 270um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 170um to 220um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 120um to 170um;
(c) when bottom glass or upper strata glass Diagonal Dimension > 534mm also≤990mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 290um to 340um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 240um to 290um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 190um to 240um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 140um to 190um;
D () is as the Diagonal Dimension > 990mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 310um to 360um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 260um to 310um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 210um to 260um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 160um to 210um.
Furtherly, this lamelliform optical cement elastic modulus method of testing is the indirect inspection that optical cement layer is not more than 360um, and without the need to the anti-elastic modulus pushing away optical cement.
See Fig. 4, adopt the sample that a kind of lamelliform optical cement elastic modulus method of testing of the present invention obtains, the sample of described three-decker is made up of bottom glass (1) from bottom to top, optical cement layer (2), upper strata glass (3); Wherein,
As the Diagonal Dimension≤264mm of bottom glass or upper strata glass, the thickness of optical cement layer (2) is between 100 to 300um; Time between 264mm to 534mm, the thickness of optical cement layer (2) increases 20um again; Time between 534mm to 990mm, the thickness of optical cement layer (2) increases 40um again; During more than 990mm, the thickness of optical cement layer (2) increases 60um again.
Furtherly, as the Diagonal Dimension≤264mm of bottom glass or upper strata glass: as the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 250um to 300um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 200um to 250um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 150um to 200um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 100um to 150um;
Furtherly, when bottom glass or upper strata glass Diagonal Dimension > 264mm also≤534mm time: as the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 270um to 320um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 220um to 270um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 170um to 220um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 120um to 170um;
Furtherly, when bottom glass or upper strata glass Diagonal Dimension > 534mm also≤990mm time: as the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 290um to 340um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 240um to 290um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 190um to 240um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 140um to 190um;
Furtherly, as the Diagonal Dimension > 990mm of bottom glass or upper strata glass: as the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 310um to 360um; As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 260um to 310um; As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 210um to 260um; As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 160um to 210um.
embodiment 1
(1) clean bottom glass and upper strata glass, the thickness of bottom glass and upper strata glass is 0.7mm, and catercorner length is for being 20mm × 50mm;
(2) glue of A, B two kinds of components of optical cement is mixed according to the ratio of 1:1, fully stirs, de-bubble, form available liquid optical cement;
(3) be the adhesive tape of 200um at the Corner Strapped thickness of bottom glass 1;
(4) liquid optical cement is poured on bottom glass, leaves standstill, treat that liquid optical cement freely trickles and cover bottom glass completely;
(5) upper strata glass is placed on bottom glass and liquid optical cement, forms the sample of 3-tier architecture;
(6) sample is put into baking oven 3 hours, oven temperatures is set as 70 DEG C, and the liquid optical cement between 2 layers of glass becomes Solid–state Optics glue;
(7) the bonding foil gauge in sample center after hardening;
(8) sample after solidification is fixed on the upper lower chuck of drawing machine;
(9) by the lead-in wire of foil gauge access strain acquisition system;
(10) pulling force 50N is applied to the sample after solidification;
(11) strain stress of sample under tensile force f after record solidification, ε=21.70u ε;
(12) according to formula
calculate optical cement elastic modulus E 3, by F=50N; ε=21.7u ε; S1=S2=0.7 × 20mm=14mm
2; S3=0.2 × 20mm=4mm
2; E1=E2=7.2 × 10
10pa brings above-mentioned formula into, can calculate elastic modulus E 3=3.75 × 10 of optical cement
7pa.
embodiment 2
In order to solve a test difficult problem for the elastic modulus of the optical cement of the fixed thickness only having a hundreds of micron, the present invention proposes a kind of method of testing of lamelliform optical cement elastic modulus, comprising the steps:
(1) clean bottom glass and upper strata glass, the thickness of bottom glass and upper strata glass is 1.1mm, is of a size of 174mm × 315mm;
(2) glue of A, B two kinds of components of optical cement is mixed according to the ratio of 1:1, fully stirs, de-bubble, form available optical cement;
(3) be the adhesive tape of 250um at the Corner Strapped thickness of bottom glass;
(4) optical cement is poured on bottom glass, leaves standstill, treat that optical cement freely trickles and cover bottom glass completely;
(5) sample is put into baking oven 3 hours, oven temperatures is set as 70 DEG C, and the liquid optical cement between 2 layers of glass becomes Solid–state Optics glue;
(6) the bonding foil gauge in sample center after hardening;
(7) sample after solidification is fixed on the upper lower chuck of drawing machine;
(8) by the lead-in wire of foil gauge access strain acquisition system;
(9) pulling force 50N is applied to the sample after solidification;
(10) strain stress of sample under tensile force f after record solidification, ε=14.49u ε;
(11) according to formula
calculate optical cement elastic modulus E
3, by F=400N; ε=14.49u ε; S1=S2=1.1 × 174mm=191.4mm
2; S3=0.25 × 315mm=78.75mm
2; E1=E2=7.2 × 10
10pa brings above-mentioned formula into, can calculate elastic modulus E 3=6.4 × 10 of optical cement
8pa.
The difficulty that the present invention and prior art make sample block contrasts:
in sum, the more existing detection technique of the inventive method, more can be reflected in the actual conditions of two-dimentional small scale (in the scope of 100 to 360um), can play better instruct and prediction work actual production.
Claims (8)
1. a lamelliform optical cement elastic modulus method of testing, described optical cement, when daily accumulating, is divided into A group reagent and B group reagent, when it is desired to be used, uses after A group reagent and the mixing of B group reagent; It is characterized in that: carry out as follows:
The sample of step one, making three-decker:
1.1 cleaning bottom glass and upper strata glass;
1.2, by the optical cement A group reagent of accumulating state and the mixing of optical cement B group reagent, fully to stir, de-bubble, form liquid optical cement;
The thickness of optical cement is preset between 100 to 360um by 1.3;
1.4 are fixed with adhesive tape respectively on four limits of bottom top surface of glass; The optical cement thickness that thickness and the step 1.3 of described adhesive tape are determined is identical; The region that described adhesive tape surrounds is in order to place liquid optical cement;
1.5 liquid optical cements step 1.2 obtained are poured on bottom center of glass region, and static placement, until liquid optical cement freely trickles and covers bottom glass completely; Unnecessary liquid optical cement flows out from the end face of adhesive tape;
1.6 tops upper strata glass being placed on the bottom glass being coated with adhesive tape and liquid optical cement, form the semi-manufacture of the 3-tier architecture of " bottom glass+liquid optical cement+upper strata glass ";
The semi-manufacture of 1.7 3-tier architectures step 1.6 obtained carry out high temperature or ultra-violet curing, make the liquid optical cement between bottom glass and upper strata glass become optical cement layer; Described optical cement layer is the optical cement of solid; Namely the sample of three-decker is obtained; The structure of the sample of described three-decker is " bottom glass+optical cement layer+upper strata glass ";
Step 2, tension test is carried out to the sample of three-decker:
2.1 on the end face of the sample of three-decker or the central area of bottom surface bonding foil gauge, subsequently, the sample of the three-decker of bonding foil gauge is vertically placed;
2.2 will be bonded with foil gauge and the bottom of the sample of the three-decker of vertically placing, top are fixed together with the lower chuck of drawing machine, upper grip respectively;
Foil gauge is accessed strain acquisition system by lead-in wire by 2.3;
2.4 by drawing machine, applies fixing tensile force f to the sample of the three-decker being bonded with foil gauge; The scope of tensile force f is between 50 to 500N;
2.5 records are bonded with the strain numerical value ε of sample under tensile force f of the three-decker of foil gauge;
The optical cement elastic modulus of the sample of step 3, calculating three-decker:
According to formula
calculate optical cement elastic modulus E 3,
In formula: E1, E2, E3 are the elastic modulus of bottom glass, upper strata glass, optical cement respectively, E1 and E2 adopts the elastic modulus of simple glass, S1, S2, S3 are the stressed sectional area of bottom glass, upper strata glass, optical cement respectively, Si=Wi × Di, i=1,2,3, Wi are the width on limit, chuck place of bottom glass, upper strata glass, optical cement respectively, Di is the thickness of bottom glass, upper strata glass, optical cement respectively, i.e. S1=W1 × D1, S2=W2 × D2, S3=W3 × D3.
2. a kind of lamelliform optical cement elastic modulus method of testing according to claim 1, is characterized in that:
In step 1.3, the thickness of optical cement confirms as follows:
A () is as the Diagonal Dimension≤264mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 250um to 300um;
As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 200um to 250um;
As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 150um to 200um;
As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 100um to 150um;
(b) when bottom glass or upper strata glass Diagonal Dimension > 264mm also≤534mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 270um to 320um;
As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 220um to 270um;
As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 170um to 220um;
As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 120um to 170um;
(c) when bottom glass or upper strata glass Diagonal Dimension > 534mm also≤990mm time:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 290um to 340um;
As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 240um to 290um;
As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 190um to 240um;
As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 140um to 190um;
D () is as the Diagonal Dimension > 990mm of bottom glass or upper strata glass:
As the thickness G reatT.GreaT.GT 1.1mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 310um to 360um;
As the thickness≤1.1mm of bottom glass or upper strata glass and > 0.7mm time, the thickness of optical cement layer is at 260um to 310um;
As the thickness≤0.7mm of bottom glass or upper strata glass and > 0.3mm time, the thickness of optical cement layer is at 210um to 260um;
As the thickness≤0.3mm of bottom glass or upper strata glass, the thickness of optical cement layer is at 160um to 210um.
3. a kind of lamelliform optical cement elastic modulus method of testing according to claim 1, is characterized in that: this lamelliform optical cement elastic modulus method of testing is the indirect inspection that optical cement layer is not more than 360um.
4. adopt the sample that described in claim 1,2 or 3, a kind of lamelliform optical cement elastic modulus method of testing obtains, it is characterized in that: the sample of described three-decker is made up of bottom glass (1) from bottom to top, optical cement layer (2), upper strata glass (3); Wherein,
As the Diagonal Dimension≤264mm of bottom glass or upper strata glass, the thickness of optical cement layer (2) is between 100 to 300um;
Time between 264mm to 534mm, the thickness of optical cement layer (2) increases 20um again;
Time between 534mm to 990mm, the thickness of optical cement layer (2) increases 40um again;
During more than 990mm, the thickness of optical cement layer (2) increases 60um again.
5. the sample adopting a kind of lamelliform optical cement elastic modulus method of testing to obtain as claimed in claim 4, is characterized in that: as the Diagonal Dimension≤264mm of bottom glass and/or upper strata glass:
If during the thickness G reatT.GreaT.GT 1.1mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 250um to 300um;
If the thickness≤1.1mm of bottom glass and/or upper strata glass when being greater than > 0.7mm, then the thickness of optical cement layer is at 200um to 250um;
If the thickness≤0.7mm of bottom glass and/or upper strata glass when being greater than > 0.3mm, then the thickness of optical cement layer is at 150um to 200um;
If during the thickness≤0.3mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 100um to 150um.
6. the sample adopting a kind of lamelliform optical cement elastic modulus method of testing to obtain as claimed in claim 4, is characterized in that: when bottom glass and/or upper strata glass Diagonal Dimension > 264mm also≤534mm time:
If during the thickness G reatT.GreaT.GT 1.1mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 270um to 320um;
If the thickness≤1.1mm of bottom glass and/or upper strata glass when being greater than > 0.7mm, then the thickness of optical cement layer is at 220um to 270um;
If the thickness≤0.7mm of bottom glass and/or upper strata glass when being greater than > 0.3mm, then the thickness of optical cement layer is at 170um to 220um;
If during the thickness≤0.3mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 120um to 170um.
7. the sample adopting a kind of lamelliform optical cement elastic modulus method of testing to obtain as claimed in claim 4, is characterized in that: when bottom glass or upper strata glass Diagonal Dimension > 534mm also≤990mm time:
If during the thickness G reatT.GreaT.GT 1.1mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 290um to 340um;
If the thickness≤1.1mm of bottom glass and/or upper strata glass when being greater than > 0.7mm, then the thickness of optical cement layer is at 240um to 290um;
If the thickness≤0.7mm of bottom glass and/or upper strata glass when being greater than > 0.3mm, then the thickness of optical cement layer is at 190um to 240um;
If during the thickness≤0.3mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 140um to 190um.
8. the sample adopting a kind of lamelliform optical cement elastic modulus method of testing to obtain as claimed in claim 4, is characterized in that: as the Diagonal Dimension > 990mm of bottom glass or upper strata glass:
If during the thickness G reatT.GreaT.GT 1.1mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 310um to 360um;
If the thickness≤1.1mm of bottom glass and/or upper strata glass when being greater than > 0.7mm, then the thickness of optical cement layer is at 260um to 310um;
If the thickness≤0.7mm of bottom glass and/or upper strata glass when being greater than > 0.3mm, then the thickness of optical cement layer is at 210um to 260um;
If during the thickness≤0.3mm of bottom glass and/or upper strata glass, then the thickness of optical cement layer is at 160um to 210um.
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106018091A (en) * | 2016-06-29 | 2016-10-12 | 苏州市明大高分子科技材料有限公司 | Method for testing tensile property of material with low elasticity modulus and high surface adhesive capacity |
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| CN112753010A (en) * | 2019-08-19 | 2021-05-04 | 京东方科技集团股份有限公司 | Foldable display screen, assembling method thereof and display device |
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| CN111220481A (en) * | 2020-01-21 | 2020-06-02 | 大连理工大学 | Method for testing elastic modulus of three-layer composite paper in each layer surface |
| CN111220481B (en) * | 2020-01-21 | 2021-06-25 | 大连理工大学 | Method for testing elastic modulus of three-layer composite paper in each layer surface |
| CN112798442A (en) * | 2020-12-11 | 2021-05-14 | 合肥维信诺科技有限公司 | Device and method for testing normal fatigue of rubber material |
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