CN107033794A - A kind of OCA optical cements and preparation method thereof - Google Patents
A kind of OCA optical cements and preparation method thereof Download PDFInfo
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- CN107033794A CN107033794A CN201710300794.7A CN201710300794A CN107033794A CN 107033794 A CN107033794 A CN 107033794A CN 201710300794 A CN201710300794 A CN 201710300794A CN 107033794 A CN107033794 A CN 107033794A
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J7/00—Adhesives in the form of films or foils
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F265/00—Macromolecular compounds obtained by polymerising monomers on to polymers of unsaturated monocarboxylic acids or derivatives thereof as defined in group C08F20/00
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J151/00—Adhesives based on graft polymers in which the grafted component is obtained by reactions only involving carbon-to-carbon unsaturated bonds; Adhesives based on derivatives of such polymers
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2301/00—Additional features of adhesives in the form of films or foils
- C09J2301/20—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself
- C09J2301/208—Additional features of adhesives in the form of films or foils characterized by the structural features of the adhesive itself the adhesive layer being constituted by at least two or more adjacent or superposed adhesive layers, e.g. multilayer adhesive
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J2451/00—Presence of graft polymer
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Abstract
The invention provides a kind of preparation method of OCA optical cements, comprise the following steps：A) OCA optical glues are coated with weight mould release membrance, obtain pending glue-line；The OCA optical glues are followed successively by the first flexible glue layer glue, ebonite layer glue and the second flexible glue layer glue from lower to upper；B) the pending glue-line for obtaining step a) carries out heat cure and metal halid lamp solidification, the composite layer after being solidified successively；C) fitted on the composite layer after the solidification that step b) is obtained light mould release membrance, obtain OCA optical cements.Compared with prior art, the preparation method for the OCA optical cements that the present invention is provided uses the OCA optical glues of complex superposition, carried out by specific curing mode stage curing, so as to get OCA optical cements curing degree it is high, solidification effect is good and has preferable mechanical property.Test result indicates that, the curing degree for the OCA optical cements that the present invention is provided is bubble-free in 100%, solidification process, and peeling force is without significant change after solidification, and product strength is high, elasticity is big.
Description
Technical field
It is to be related to a kind of OCA optical cements and its preparation side more specifically the present invention relates to adhesive material technical field
Method.
Background technology
OCA optical cements be it is a kind of have it is optically transparent without the extraordinary double faced adhesive tape of base material, for cementing transparent optical element, tool
Have water white transparency, light transmission rate more than 90%, cementing strength it is good, can solidify under room temperature or middle temperature, and have cure shrinkage
Small the features such as, be one of raw material of important touch-screen.
At present, the OCA optical cements of in the market are that OCA optical glues are made into no base material, are then respectively fitted on upper and lower surface
One layer of mould release membrance, is mainly used in mobile phone screen, for bonding ito thin film and ito thin film and plastics inscription plate.But, it is existing
OCA optical cements in technology typically use Stereolithography in production, because bondline thickness is larger, often exist in production
The problem of solidification is not exclusively, solidification effect is poor, so as to constrain the production yield of OCA optical cements；And it is multiple again by multi-shell curing
Although the mode of conjunction can improve curing degree, can have a negative impact again to the mechanical property of product.
The content of the invention
In view of this, it is an object of the invention to provide a kind of OCA optical cements and preparation method thereof, the system that the present invention is provided
OCA optical cements curing degree that Preparation Method is obtained is high, solidification effect is good and has preferable mechanical property.
The invention provides a kind of preparation method of OCA optical cements, comprise the following steps：
A) OCA optical glues are coated with weight mould release membrance, obtain pending glue-line；The OCA optical glues are from lower to upper
It is followed successively by the first flexible glue layer glue, ebonite layer glue and the second flexible glue layer glue；
B) the pending glue-line for obtaining step a) carries out heat cure and metal halid lamp solidification successively, after being solidified
Composite layer；
C) fitted on the composite layer after the solidification that step b) is obtained light mould release membrance, obtain OCA optical cements.
It is preferred that, the thickness of weight mould release membrance described in step a) is 50 μm~200 μm, and off-type force is 50g/f~100g/f.
It is preferred that, the mode that OCA optical glues are coated with described in step a) is multi-layer co-extruded coating.
It is preferred that, the layer glue of the first flexible glue described in step a) is to include resin, UV light triggers, coupling agent and curing agent
OCA optical glues, the mass ratio of resin, UV light triggers, coupling agent and curing agent in first flexible glue layer glue is
(80~95)：(0.1~5)：(0.3~5)：(0.01~0.1)；
The coating thickness of the first flexible glue layer glue is 50 μm~100 μm.
It is preferred that, the layer glue of ebonite described in step a) is to include resin, UV light triggers, coupling agent, curing agent and dilute
Release the OCA optical glues of agent, the matter of resin, UV light triggers, coupling agent, curing agent and diluent in the ebonite layer glue
Amount is than being (80~95)：(0.1~5)：(0.3~5)：(0.5~5)：(10~40)；
The coating thickness of the ebonite layer glue is 20 μm~30 μm.
It is preferred that, the layer glue of the second flexible glue described in step a) is to include resin, UV light triggers, coupling agent, curing agent
With the OCA optical glues of diluent, resin, UV light triggers, coupling agent, curing agent in second flexible glue layer glue and dilute
The mass ratio for releasing agent is (80~95)：(0.1~5)：(0.3~5)：(0.01~0.1)：(10~40)；
The coating thickness of the second flexible glue layer glue is 30 μm~70 μm.
It is preferred that, heat cure described in step b) is carried out in heat cure section；It is roasting that the heat cure section includes 5~10 sections
Case, the temperature of the baking box is 50 DEG C~110 DEG C, and adjacent oven temperature is different, and the temperature difference of adjacent baking box is 10 DEG C~20 DEG C；
The time of the heat cure is 60s~300s.
It is preferred that, metal halid lamp described in step b) is solidificated in metal halid lamp solidification section and carried out；The metal halogen
Metal halid lamp number in plain lamp solidification section is 2~8, and adjacent metal Halogen lamp LED interlocks up and down using pending glue-line as plane
Arrangement, the horizontal range of adjacent metal Halogen lamp LED is 15cm~30cm, the vertical range of each metal halid lamp and pending glue-line
For 5cm~10cm；
The wavelength of the metal halid lamp solidification is 350nm~450nm, and the time is 30s~180s.
It is preferred that, the thickness of light mould release membrance described in step c) is 25 μm~200 μm, and off-type force is 1g/f~15g/f.
Present invention also offers a kind of OCA optical cements, it is prepared from by the preparation method described in above-mentioned technical proposal.
The invention provides a kind of preparation method of OCA optical cements, comprise the following steps：A) it is coated with weight mould release membrance
OCA optical glues, obtain pending glue-line；The OCA optical glues are followed successively by the first flexible glue layer glue, ebonite layer from lower to upper
Glue and the second flexible glue layer glue；B) the pending glue-line for obtaining step a) carries out heat cure successively and metal halid lamp is solid
Change, the composite layer after being solidified；C) fit light mould release membrance, obtain on the composite layer after the solidification that step b) is obtained
OCA optical cements.Compared with prior art, the preparation method for the OCA optical cements that the present invention is provided uses the OCA optics of complex superposition
Glue, is carried out stage curing by specific curing mode, so as to get OCA optical cements curing degree is high, solidification effect is good and
With preferable mechanical property.Test result indicates that, the curing degree for the OCA optical cements that the present invention is provided is 100%, is solidified
Peeling force is without significant change after bubble-free in journey, solidification, and product strength is high, elasticity is big.
Brief description of the drawings
The structural representation for the OCA optical cements that Fig. 1 provides for the present invention.
Embodiment
Below in conjunction with the embodiment of the present invention, technical scheme is clearly and completely described, it is clear that institute
The embodiment of description is only a part of embodiment of the invention, rather than whole embodiments.Based on the embodiment in the present invention,
The every other embodiment that those of ordinary skill in the art are obtained under the premise of creative work is not made, belongs to this hair
The scope of bright protection.
The invention provides a kind of preparation method of OCA optical cements, comprise the following steps：
A) OCA optical glues are coated with weight mould release membrance, obtain pending glue-line；The OCA optical glues are from lower to upper
It is followed successively by the first flexible glue layer glue, ebonite layer glue and the second flexible glue layer glue；
B) the pending glue-line for obtaining step a) carries out heat cure and metal halid lamp solidification successively, after being solidified
Composite layer；
C) fitted on the composite layer after the solidification that step b) is obtained light mould release membrance, obtain OCA optical cements.
The present invention is coated with OCA optical glues on weight mould release membrance first, obtains pending glue-line.In the present invention, it is described
The base material of weight mould release membrance is preferably PET, PVC, PC, PE, PP or OPP, more preferably PET；The present invention is to the heavy mould release membrance
Source is not particularly limited, and uses above-mentioned base material well known to those skilled in the art for PET, PVC, PC, PE, PP or OPP weight
The commercial goods of mould release membrance.In the present invention, the thickness of the heavy mould release membrance is preferably 50 μm~200 μm, more preferably
100μm；The off-type force of the heavy mould release membrance is preferably 50g/f~100g/f, more preferably 80g/f.
In the present invention, the OCA optical glues are followed successively by the first flexible glue layer glue, ebonite layer glue and the from lower to upper
Two flexible glues layer glue.In the present invention, first flexible glue layer glue preferably comprise resin, UV light triggers, coupling agent and
The OCA optical glues of curing agent.In the present invention, the resin in first flexible glue layer glue be preferably acrylic resin,
One or more in polyurethane based resin and epoxy polyester resinoid, more preferably acrylic resin；First flexible glue
The mass ratio of resin, UV light triggers, coupling agent and curing agent in layer glue is preferably (80~95)：(0.1~5)：(0.3
~5)：(0.01~0.1), more preferably 95：2.5：2.45：0.05.The present invention does not have to the source of first flexible glue layer glue
Have specifically limited, using commercial goods well known to those skilled in the art.In the present invention, the first flexible glue layer glue
Coating thickness be preferably 50 μm~100 μm, more preferably 80 μm.
In the present invention, ebonite layer glue preferably comprises resin, UV light triggers, coupling agent, curing agent and dilute
Release the OCA optical glues of agent.In the present invention, the resin in the ebonite layer glue is preferably acrylic resin, polyurethane
One or more in resinoid and epoxy polyester resinoid, more preferably acrylic resin；In the ebonite layer glue
Resin, UV light triggers, coupling agent, the mass ratio of curing agent and diluent are preferably (80~95)：(0.1~5)：(0.3~
5)：(0.5~5)：(10~40), more preferably 81：2.5：2.5：4：10.The present invention does not have to the source of ebonite layer glue
It is specifically limited, using commercial goods well known to those skilled in the art.In the present invention, the coating of the ebonite layer glue
Thickness is preferably 20 μm~30 μm, more preferably 20 μm.
In the present invention, the second flexible glue layer glue preferably comprises resin, UV light triggers, coupling agent, curing agent
With the OCA optical glues of diluent.In the present invention, the resin in the second flexible glue layer glue is preferably acrylic compounds tree
One or more in fat, polyurethane based resin and epoxy polyester resinoid, more preferably acrylic resin；Described second is soft
The mass ratio of resin, UV light triggers, coupling agent, curing agent and diluent in glue-line glue is preferably (80~95)：(0.1
~5)：(0.3~5)：(0.01~0.1)：(10~40), more preferably 81：2.5：2.45：0.05：14.The present invention is to described the
The source of two flexible glues layer glue is not particularly limited, using commercial goods well known to those skilled in the art.In the present invention
In, the coating thickness of the second flexible glue layer glue is preferably 30 μm~70 μm, more preferably 50 μm.
In the present invention, the mode of the coating OCA optical glues is preferably multi-layer co-extruded coating, and more preferably three layers altogether
Squeezing and coating cloth.The present invention can make the OCA optical glue complex superpositions of different component using multi-layer co-extruded coating, and disposably be coated with
Complete.
Obtain after the pending glue-line, obtained pending glue-line is carried out heat cure and metal halogen by the present invention successively
Lamp solidifies, the composite layer after being solidified.In the present invention, the heat cure is preferably carried out in heat cure section.In this hair
In bright, the heat cure section preferably includes 5~10 section baking boxs, more preferably 7 section baking boxs；Each baking box is sequentially communicated, arrangement form
Heat cure section.In the present invention, the temperature of the baking box is preferably 50 DEG C~110 DEG C, and adjacent oven temperature is different, adjacent baking box
Temperature difference be preferably 10 DEG C~20 DEG C.In a preferred embodiment of the invention, the heat cure section saves temperature successively by 7
Baking box for 50 DEG C, 60 DEG C, 80 DEG C, 100 DEG C, 110 DEG C, 90 DEG C and 70 DEG C is formed.In the present invention, the time of the heat cure
Preferably 60s~300s, more preferably 70s~120s.
In the present invention, the metal halid lamp solidification is preferably carried out in metal halid lamp solidification section.In the present invention,
Metal halid lamp number in the metal halid lamp solidification section is preferably 2~8；Adjacent metal Halogen lamp LED is with pending glue
Layer is is staggered above and below plane, i.e.,：First metal halid lamp exists in the top of pending glue-line, second metal halid lamp
The lower section of pending glue-line, the 3rd metal halid lamp is in the top of pending glue-line, and the 4th metal halid lamp is pending
The lower section of glue-line, by that analogy；Also, the horizontal range of adjacent metal Halogen lamp LED is preferably 15cm~30cm；Each metal halogen
The vertical range of lamp and pending glue-line is preferably 5cm~10cm.In the present invention, because metal halid lamp solidifies the gold in section
Category halogen light irradiation can realize that therefore, the length of metal halid lamp solidification section includes head and the tail metal halogen within the specific limits
Lamp extends the horizontal range of the adjacent metal Halogen lamp LED, i.e.,：When metal halid lamp number is 2, metal halid lamp is solid
Change horizontal range of the length of section for 2 adjacent metal Halogen lamp LEDs；When metal halid lamp number is 8, metal halid lamp solidification
The length of section is the horizontal range of 8 adjacent metal Halogen lamp LEDs.
In the present invention, the wavelength of the metal halid lamp solidification is preferably 350nm~450nm；The metal halid lamp
The time of solidification is 30s~180s, more preferably 100s~150s.
In the present invention, the heat cure section is connected with metal halid lamp solidification section, ensure that pending glue-line
Continuously sequentially pass through above-mentioned heat cure section and metal halid lamp solidifies section, complete solidification process, the compound adhesive after being solidified
Layer.In the present invention, the composite layer after the solidification attach most importance to successively from lower to upper mould release membrance, the first flexible glue layer, ebonite layer and
Second flexible glue layer.
After composite layer after being solidified, light mould release membrance of being fitted on the composite layer of the invention after the solidification is obtained
To OCA optical cements.In the present invention, the base material of the light mould release membrance is preferably PET, PVC, PC, PE, PP or OPP, is more preferably
PET；The present invention is not particularly limited to the source of the light mould release membrance, use above-mentioned base material well known to those skilled in the art for
The commercial goods of PET, PVC, PC, PE, PP or OPP light mould release membrance.In the present invention, the thickness of the light mould release membrance is excellent
Elect 25 μm~200 μm, more preferably 50 μm as；The off-type force of the light mould release membrance is preferably 1g/f~15g/f, more preferably
10g/f。
Present invention also offers a kind of OCA optical cements, it is prepared from by the preparation method described in above-mentioned technical proposal.At this
In invention, the OCA optical cements include：
Weight mould release membrance；
It is compounded in the first flexible glue layer on the heavy mould release membrance；
It is compounded in the upper ebonite layer of the first flexible glue layer；
It is compounded in the second flexible glue layer on the ebonite layer；
It is compounded in the light mould release membrance on the second flexible glue layer.
Referring to Fig. 1, the structural representation of OCA optical cements that Fig. 1 provides for the present invention, wherein, 1 attaches most importance to mould release membrance, and 2 are
First flexible glue layer, 3 be ebonite layer, and 4 be the second flexible glue layer, and 5 be light mould release membrance.
The invention provides a kind of preparation method of OCA optical cements, comprise the following steps：A) it is coated with weight mould release membrance
OCA optical glues, obtain pending glue-line；The OCA optical glues are followed successively by the first flexible glue layer glue, ebonite layer from lower to upper
Glue and the second flexible glue layer glue；B) the pending glue-line for obtaining step a) carries out heat cure successively and metal halid lamp is solid
Change, the composite layer after being solidified；C) fit light mould release membrance, obtain on the composite layer after the solidification that step b) is obtained
OCA optical cements.Compared with prior art, the preparation method for the OCA optical cements that the present invention is provided uses the OCA optics of complex superposition
Glue, is carried out stage curing by specific curing mode, so as to get OCA optical cements curing degree is high, solidification effect is good and
With preferable mechanical property.Test result indicates that, the curing degree for the OCA optical cements that the present invention is provided is 100%, is solidified
Peeling force is without significant change after bubble-free in journey, solidification, and product strength is high, elasticity is big.
In order to further illustrate the present invention, it is described in detail below by following examples.Following examples of the present invention
OCA optical glues (including flexible glue layer glue, ebonite layer glue) used are by the limited public affairs of Gu Le nations of Guangdong Province new material science and technology
Department provides.
Embodiment 1
(1) on the heavy mould release membrance that off-type force is 80g/f, thickness is 100 μm, using three-layer co-extruded coating method, one
Secondary property is coated with the OCA optical glues of one layer of 150 μ m-thick, the OCA optical glues be followed successively by from lower to upper the first flexible glue layer glue,
Ebonite layer glue and the second flexible glue layer glue, wherein, the component of the first flexible glue layer glue is：Acrylic resin 95wt%, UV light
Initiator 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, solid content is 100%, and coating thickness is 80 μ
m；Ebonite layer glue component be：Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.5wt%,
Curing agent 4wt%, diluent 10wt%, solid content is 85%, and coating thickness is 20 μm；Second flexible glue layer glue component be：
Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, diluent
14wt%, solid content is 70%, and coating thickness is 50 μm, obtains pending glue-line；
(2) by pending glue-line successively through heat cure section (7 section temperature be followed successively by 50 DEG C, 60 DEG C, 80 DEG C, 100 DEG C, 110
DEG C, the baking box of 90 DEG C and 70 DEG C) carry out heat cure 90s and metal halid lamp solidification section (400nm metal halid lamps 6, adjacent gold
Belong to Halogen lamp LED using pending glue-line as plane above and below be staggered, and horizontal range is 20cm, and each metal halid lamp is located with waiting
The vertical range for managing glue-line is 8cm) carry out metal halid lamp solidification 120s, the composite layer after being solidified, after the solidification
Composite layer attach most importance to successively from lower to upper mould release membrance, the first flexible glue layer, ebonite layer and the second flexible glue layer；
(3) the second flexible glue layer overlying last layer off-type force of composite layer after hardening is that 10g/f, thickness are 50 μm
Light mould release membrance, obtains OCA optical cements.
The LX-D shore durometer provided using Beijing epoch Jia Xiang Science and Technology Ltd.s tests the first flexible glue layer
Shore hardness is 20D, and the shore hardness of ebonite layer is 38D, and the shore hardness of the second flexible glue layer is 20D.
Embodiment 2
(1) on the heavy mould release membrance that off-type force is 80g/f, thickness is 100 μm, using three-layer co-extruded coating method, one
Secondary property is coated with the OCA optical glues of one layer of 100 μ m-thick, the OCA optical glues be followed successively by from lower to upper the first flexible glue layer glue,
Ebonite layer glue and the second flexible glue layer glue, wherein, the component of the first flexible glue layer glue is：Acrylic resin 95wt%, UV light
Initiator 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, solid content is 100%, and coating thickness is 50 μ
m；Ebonite layer glue component be：Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.5wt%,
Curing agent 4wt%, diluent 10wt%, solid content is 85%, and coating thickness is 20 μm；Second flexible glue layer glue component be：
Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, diluent
14wt%, solid content is 70%, and coating thickness is 30 μm, obtains pending glue-line；
(2) by pending glue-line successively through heat cure section (7 section temperature be followed successively by 50 DEG C, 60 DEG C, 80 DEG C, 100 DEG C, 110
DEG C, the baking box of 90 DEG C and 70 DEG C) carry out heat cure 70s and metal halid lamp solidification section (350nm metal halid lamps 8, adjacent gold
Belong to Halogen lamp LED using pending glue-line as plane above and below be staggered, and horizontal range is 20cm, and each metal halid lamp is located with waiting
The vertical range for managing glue-line is 10cm) carry out metal halid lamp solidification 100s, the composite layer after being solidified, after the solidification
Composite layer attach most importance to successively from lower to upper mould release membrance, the first flexible glue layer, ebonite layer and the second flexible glue layer；
(3) the second flexible glue layer overlying last layer off-type force of composite layer after hardening is that 10g/f, thickness are 50 μm
Light mould release membrance, obtains OCA optical cements, the curing degree of product is 100%；The shore hardness of first flexible glue layer is 20D, ebonite layer
Shore hardness be 38D, the second flexible glue layer shore hardness be 20D.
Embodiment 3
(1) on the heavy mould release membrance that off-type force is 80g/f, thickness is 100 μm, using three-layer co-extruded coating method, one
Secondary property is coated with the OCA optical glues of one layer of 200 μ m-thick, the OCA optical glues be followed successively by from lower to upper the first flexible glue layer glue,
Ebonite layer glue and the second flexible glue layer glue, wherein, the component of the first flexible glue layer glue is：Acrylic resin 95wt%, UV light
Initiator 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, solid content is 100%, and coating thickness is 100
μm；Ebonite layer glue component be：Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.5wt%,
Curing agent 4wt%, diluent 10wt%, solid content is 85%, and coating thickness is 30 μm；Second flexible glue layer glue component be：
Acrylic resin 81wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, diluent
14wt%, solid content is 70%, and coating thickness is 70 μm, obtains pending glue-line；
(2) by pending glue-line successively through heat cure section (7 section temperature be followed successively by 50 DEG C, 60 DEG C, 80 DEG C, 100 DEG C, 110
DEG C, the baking box of 90 DEG C and 70 DEG C) carry out heat cure 120s and metal halid lamp solidification section (450nm metal halid lamps 4, it is adjacent
Metal halid lamp using pending glue-line as plane above and below be staggered, and horizontal range is 20cm, and each metal halid lamp is with treating
The vertical range for handling glue-line is 5cm) carry out metal halid lamp solidification 150s, the composite layer after being solidified, the solidification
Composite layer afterwards attach most importance to successively from lower to upper mould release membrance, the first flexible glue layer, ebonite layer and the second flexible glue layer；
(3) the second flexible glue layer overlying last layer off-type force of composite layer after hardening is that 10g/f, thickness are 50 μm
Light mould release membrance, obtains OCA optical cements, the curing degree of product is 100%；The shore hardness of first flexible glue layer is 20D, ebonite layer
Shore hardness be 38D, the second flexible glue layer shore hardness be 20D.
Comparative example 1
On the heavy mould release membrance that off-type force is 80g/f, thickness is 100 μm, the flexible glue layer glue of one layer of 200 μ m-thick of coating
(acrylic resin 95wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, admittedly contain
Measure as 100%), through heat cure section, (7 section temperature are followed successively by 50 DEG C, 60 DEG C, 80 DEG C, 100 DEG C, 110 DEG C, 90 DEG C and 70 DEG C roasting
Case) heat cure 270s is carried out, the flexible glue layer after being solidified, then the flexible glue layer overlying last layer off-type force after obtained solidification
For the light mould release membrance that 10g/f, thickness are 50 μm, OCA optical cements are obtained, the curing degree of product is 85%, the shore of flexible glue layer
Hardness is 15.2D.
Comparative example 2
On the heavy mould release membrance that off-type force is 80g/f, thickness is 100 μm, the flexible glue layer glue of one layer of 200 μ m-thick of coating
(acrylic resin 95wt%, UV light trigger 2.5wt%, acrylic acid coupling agent 2.45wt%, curing agent 0.05wt%, admittedly contain
Measure as 100%), solidifying section through metal halid lamp, (450nm metal halid lamps 4, adjacent metal Halogen lamp LED is to scribble OCA optics
The film surface of the mould release membrance of glue is to be staggered above and below plane, and horizontal range is 20cm, and each metal halid lamp is with scribbling OCA
The vertical range of the film surface of the mould release membrance of optical glue is 5cm) carry out the flexible glue after metal halid lamp solidification 270s is solidified
Layer, then after obtained solidification flexible glue layer overlying last layer off-type force be 10g/f, the light mould release membrance that thickness is 50 μm, obtain
OCA optical cements, the curing degree of product is 90%, and the shore hardness of flexible glue layer is 16.1D.
The performance of the OCA optical cements provided the embodiment of the present invention 1~3 and comparative example 1~2 is tested, as a result such as table 1
It is shown.
The performance data for the OCA optical cements that the embodiment of the present invention 1~3 of table 1 and comparative example 1~2 are provided
As shown in Table 1, the preparation method for the OCA optical cements that the embodiment of the present invention 1~3 is provided is provided compared to comparative example 1~2
OCA optical cements preparation method, can solve the problem that OCA optical cements in process of production because thickness it is excessive solidification not exclusively, solidification
The technical problem of effect difference, reduces the bubble occurred in colloid, improves production yield, improves the mechanical property of product.
The described above of the disclosed embodiments, enables professional and technical personnel in the field to realize or using the present invention.It is right
A variety of modifications of these embodiments will be apparent for those skilled in the art, and as defined herein one
As principle can realize in other embodiments without departing from the spirit or scope of the present invention.Therefore, the present invention will
It will not be intended to be limited to the embodiments shown herein, and be to fit to consistent with principles disclosed herein and features of novelty
Most wide scope.
Claims (10)
1. a kind of preparation method of OCA optical cements, comprises the following steps：
A) OCA optical glues are coated with weight mould release membrance, obtain pending glue-line；The OCA optical glues are from lower to upper successively
For the first flexible glue layer glue, ebonite layer glue and the second flexible glue layer glue；
B) the pending glue-line for obtaining step a) carries out heat cure and metal halid lamp solidification successively, compound after being solidified
Glue-line；
C) fitted on the composite layer after the solidification that step b) is obtained light mould release membrance, obtain OCA optical cements.
2. preparation method according to claim 1, it is characterised in that the thickness of weight mould release membrance described in step a) is 50 μm
~200 μm, off-type force is 50g/f~100g/f.
3. preparation method according to claim 1, it is characterised in that the side of OCA optical glues is coated with described in step a)
Formula is multi-layer co-extruded coating.
4. preparation method according to claim 1, it is characterised in that the layer glue of the first flexible glue described in step a) is to include
Resin, UV light in resin, UV light triggers, the OCA optical glues of coupling agent and curing agent, the first flexible glue layer glue draw
The mass ratio for sending out agent, coupling agent and curing agent is (80~95)：(0.1~5)：(0.3~5)：(0.01~0.1)；
The coating thickness of the first flexible glue layer glue is 50 μm~100 μm.
5. preparation method according to claim 1, it is characterised in that the layer glue of ebonite described in step a) is to include tree
Resin, UV light in fat, UV light triggers, coupling agent, the OCA optical glues of curing agent and diluent, the ebonite layer glue
Initiator, coupling agent, the mass ratio of curing agent and diluent are (80~95)：(0.1~5)：(0.3~5)：(0.5~5)：(10
~40)；
The coating thickness of the ebonite layer glue is 20 μm~30 μm.
6. preparation method according to claim 1, it is characterised in that the layer glue of the second flexible glue described in step a) is to include
Tree in resin, UV light triggers, coupling agent, the OCA optical glues of curing agent and diluent, the second flexible glue layer glue
Fat, UV light triggers, coupling agent, the mass ratio of curing agent and diluent are (80~95)：(0.1~5)：(0.3~5)：(0.01
~0.1)：(10~40)；
The coating thickness of the second flexible glue layer glue is 30 μm~70 μm.
7. preparation method according to claim 1, it is characterised in that heat cure is in heat cure Duan Zhongjin described in step b)
OK；The heat cure section includes 5~10 section baking boxs, and the temperature of the baking box is 50 DEG C~110 DEG C, and adjacent oven temperature is different,
The temperature difference of adjacent baking box is 10 DEG C~20 DEG C；
The time of the heat cure is 60s~300s.
8. preparation method according to claim 1, it is characterised in that metal halid lamp is solidificated in metal described in step b)
Carried out in Halogen lamp LED solidification section；Metal halid lamp number in the metal halid lamp solidification section is 2~8, adjacent metal halogen
Plain lamp using pending glue-line as plane above and below be staggered, the horizontal range of adjacent metal Halogen lamp LED is 15cm~30cm, each gold
The vertical range for belonging to Halogen lamp LED and pending glue-line is 5cm~10cm；
The wavelength of the metal halid lamp solidification is 350nm~450nm, and the time is 30s~180s.
9. preparation method according to claim 1, it is characterised in that the thickness of light mould release membrance described in step c) is 25 μm
~200 μm, off-type force is 1g/f~15g/f.
10. a kind of OCA optical cements, are prepared from by the preparation method described in any one of claim 1~9.
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| CN109536051A (en) * | 2018-12-07 | 2019-03-29 | 深圳市宝力新材料有限公司 | A kind of low dielectric OCA optical cement, optical adhesive film and its membrane preparation method |
| CN111334217A (en) * | 2020-05-18 | 2020-06-26 | 苏州世华新材料科技股份有限公司 | Regionally cured high-filling AB adhesive, and preparation method and application thereof |
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| CN107033794B (en) | 2020-06-19 |
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