CN109401714A - A kind of OCA optics adhesive and its preparation method and application - Google Patents
A kind of OCA optics adhesive and its preparation method and application Download PDFInfo
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- CN109401714A CN109401714A CN201811200197.8A CN201811200197A CN109401714A CN 109401714 A CN109401714 A CN 109401714A CN 201811200197 A CN201811200197 A CN 201811200197A CN 109401714 A CN109401714 A CN 109401714A
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- adhesive
- oca optics
- resin
- polyester polyol
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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
- C09J175/00—Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
- C09J175/04—Polyurethanes
- C09J175/06—Polyurethanes from polyesters
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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
- C09J7/20—Adhesives in the form of films or foils characterised by their carriers
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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
- C09J7/30—Adhesives in the form of films or foils characterised by the adhesive composition
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- Organic Chemistry (AREA)
- Adhesives Or Adhesive Processes (AREA)
Abstract
The invention discloses a kind of OCA optics adhesives, it is characterized in that, the OCA optics adhesive is Aqueous Polyurethane Adhesives, is made of the following components of parts by weight meter: 100~200 parts of polyester polyol, 50~80 parts of isocyanates, 25~50 parts of hydrophilic chain extender, 20~30 parts of salt forming agent, 1~2 part of organotin catalysts, 1~2 part of light stabilizer, 5~10 parts of optics additive, 5~10 parts of optical material, 2~5 parts of crosslinking agent.The invention also discloses the preparation method and application of OCA optics adhesive.Adhesive of the invention has the characteristics that wide purposes, environmental protection, preparation process are simple, also has good optical property, mechanical property and adhesive property.
Description
Technical field
The present invention relates to polymeric material fields, more particularly to one kind to be used for ito film, Electronic Paper, transparent devices, projection screen
Assembling, display assembling, lens assembling, resistive touch screen, capacitive touch screen, panel and other associated electrical optical instruments
The environmentally friendly OCA optics adhesive tape in fields such as bonding and preparation method thereof.
Background technique
The optics adhesive of OCA optical adhesive tape is the extraordinary adhesive for being bonded transparent optical element, feature be it is colourless,
Transparent, light transmission rate 90% or more, cementing strength it is good, can solidify under room temperature or medium temperature and have the spies such as cure shrinkage is small
Point, be mainly used for ito film, Electronic Paper, transparent devices, projection screen assembling, display assembling, lens assembling, resistive touch screen,
Capacitive touch screen, panel and bonding of other associated electrical optical instruments etc..
Optics adhesive is prepared the difference measured and is caused its type numerous due to practical raw material difference or raw material of the same race
More, preparing the major ingredient that optics adhesive uses has: organic silicon rubber, polyurethane, epoxy resin, acrylic resin and unsaturation are poly-
Some auxiliary materials will be usually added when preparing in ester etc., and to improve its optical property or reduce cure shrinkage, these are transparent auxiliary
Material can ensure that transparent and sufficient display brightness, and provide durable adhesive effect, still, how apt selection gluing
Agent, the principle that there is no a system general, also there is no the adhesives that " all-purpose adhesive " etc is arbitrarily used for people, select gluing
The principle of agent is generally comprised to be determined according to the chemical property for being glued material；Determined according to the physical property for being glued material etc..
Summary of the invention
For overcome the deficiencies in the prior art, one of the objects of the present invention is to provide a kind of OCA optics adhesive, the glue
Glutinous agent has the characteristics that wide purposes, environmental protection, preparation process are simple, also has good optical property, mechanical property and cementability
Energy.
The second object of the present invention: a kind of preparation method of OCA optics adhesive is provided.
The third object of the present invention is to provide a kind of application of OCA optics adhesive.
An object of the present invention is implemented with the following technical solutions:
A kind of OCA optics adhesive, characterized in that the OCA optics adhesive is Aqueous Polyurethane Adhesives, by weight
The following components composition of part meter: 100~200 parts of polyester polyol, 50~80 parts of isocyanates, hydrophilic chain extender 25~50
Part, 20~30 parts of salt forming agent, 1~2 part of organotin catalysts, 1~2 part of light stabilizer, 5~10 parts of optics additive, optics material
5~10 parts, 2~5 parts of crosslinking agent of material.
Preferably, the polyester polyol is HT38 polyester polyol, HT3000 polyester polyol, HT100 polyester polyols
One or both of alcohol, HT756 polyester polyol, HT218 polyester polyol, molecular weight are 600~1000.
Preferably, the isocyanates is dicyclohexyl methyl hydride diisocyanate, hexamethylene diisocyanate, different Fo Er
One or both of ketone diisocyanate or more.
Preferably, the hydrophilic chain extender is tartaric acid, dihydromethyl propionic acid, one in dimethylolpropionic acid half ester
Kind.
Preferably, the salt forming agent is one of sodium hydroxide, ammonium hydroxide, triethylamine.
Preferably, the light stabilizer is one of light stabilizer 770, light stabilizer 944, light stabilizer 292 or more
Kind.Light stabilizer can shield or absorb the energy of ultraviolet light, quenching singlet oxygen and peroxide be resolved into inert matter
Etc. functions, make high molecular polymer under the radiation of light, can exclude or slow down photochemical reaction possibility, prevent or delay light is old
The process of change extends high polymer product service life to reach.
Preferably, the optics additive is neodymium-doped optical grade calcium carbonate.
Preferably, the optical material refers to a kind of material that can be shone or change colour by light stimulus, wherein the material
Including the material by luminescence-utraviolet, the material by ultraviolet color-changing and the material of infrared light emission can be passed through.
Described to be not particularly limited by the material of luminescence-utraviolet, it is, for example, possible to use photo-luminescent pigments, photic hair
Photoinitiator dye etc..These materials can be used alone or two or more any combination thereof uses.
The photo-luminescent pigment may include, for example, organic fluorescent pigment, inorganic fluorescent pigment etc..The luminescence generated by light
Pigment may include, for example, diphenyl ethylene derivatives class dyestuff, imidazole derivatives species dyestuff, benzimidazole dyestuff, cumarin spread out
Biological species dyestuff, diphenyl amine dyestuff etc..
The pigment and dyestuff of the luminescence generated by light can be used in the form of solid-state, liquid, powder etc., and preferably with powder shape
Formula uses.
The luminescence generated by light powder is lanthanide complex, organic fluorescence materials, inorganic fluorescent material etc., and preferably group of the lanthanides is matched
Close object.
The maximum excitation wavelength of the material by luminescence-utraviolet is not particularly limited, for example, the maximum excitation
Wavelength can be 300~450 nanometers, preferably 350~420 nanometers.The light of this and the laser of the used laser designator
And the light source of display is related, when the wavelength of the light is greater than 450 nanometers, is equivalent to visible light region, it can show with described
Show that the light source of device overlaps, to reduce visibility.
Preferably, the crosslinking agent is isocyanate compound, epoxide, melamine resinoid, aziridines
One or both of compound or more.
The second object of the present invention is realized using following methods:
A method of preparing the OCA optics adhesive, characterized in that be prepared using following steps:
1) reaction kettle is added in the polyester polyol, isocyanates and organotin catalysts according to formula ratio, in 80
~110 DEG C of mixings prepare performed polymer in 1.5-4 hours；
2) according to formula ratio by the hydrophilic chain extender, salt forming agent, optics additive, optical material, crosslinking agent and light
Stabilizer is added in step 1), under the conditions of 70-100 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by polyurethane gluing
Agent.
The third object of the present invention is realized using following scheme:
A kind of adhesive tape prepared using the OCA optics adhesive, characterized in that including substrate layer, release layer and by institute
State the adhesive layer that OCA optics adhesive is prepared；The substrate is polyolefin resin, polyester resin, cellulose family
Resin, polycarbonate resin, acrylic resin, styrene resin, vinyl chloride resin, amide resinoid, acid imide
Resinoid, polyether sulfone resin, sulfone resinoid, polyether etherketone resinoid, polyphenylene sulfide resinoid, vinyl alcohol resin, inclined two
It is vinyl chloride resin, butyral vinyl resins, acrylic resinoid, polyformaldehyde resinoid, any one in epoxylite
Kind；The substrate with a thickness of 5~100um；The release layer uses polyethylene terephthalate, polypropylene or polyethylene
One of be prepared.When the thickness of the base film is less than 5 microns, the mechanical strength of the base film may under
Drop, and when the thickness of the base film is more than 100 microns, toughness can decline, to may produce in adhesion process
Anger bubble.
Compared with prior art, the beneficial effects of the present invention are:
1, optics adhesive simple process prepared by the present invention does not use organic solvent, and performance adjustable extent is wide, passes through
Adjustment Monomer Formations can be realized the polyurethane elastomer material of different hardness, mechanical property, adhesive property, meet different uses
Demand.
2, optics adhesive of the present invention and the optical adhesive tape using material preparation have good optical
Energy, mechanical property and adhesive property have apparent advantage relative to existing properties of product, a variety of for electronic equipment etc.
Bright material all has good adhesive property and matching properties, and optical adhesive tape has high homogeneity, the light of each point everywhere
It is consistent with optical physics chemical property to learn constant.
3, different from traditional polymerisation in solution mode preparation process, the present invention uses aqueous preparation process, will not generate molten
The environmental issue of agent volatilization pollution atmosphere.
Specific embodiment
In the following, being described further in conjunction with specific embodiment to the present invention:
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 100~200 parts of polyester polyol, 50~80 parts of isocyanates, 25~50 parts of hydrophilic chain extender, salt forming agent
20~30 parts, 1~2 part of organotin catalysts, 1~2 part of light stabilizer, 5~10 parts of optics additive, 5~10 parts of optical material,
2~5 parts of crosslinking agent.
Preferably, the polyester polyol is HT38 polyester polyol, HT3000 polyester polyol, HT100 polyester polyols
One or both of alcohol, HT756 polyester polyol, HT218 polyester polyol, molecular weight are 600~1000.
Preferably, the isocyanates is dicyclohexyl methyl hydride diisocyanate, hexamethylene diisocyanate, different Fo Er
One or both of ketone diisocyanate or more.
Preferably, the aqueous chain extender is one of tartaric acid, dihydromethyl propionic acid, dimethylolpropionic acid half ester.
Preferably, the salt forming agent is one of sodium hydroxide, ammonium hydroxide, triethylamine.
Preferably, the light stabilizer is one of light stabilizer 770, light stabilizer 944, light stabilizer 292 or more
Kind.Light stabilizer can shield or absorb the energy of ultraviolet light, quenching singlet oxygen and peroxide be resolved into inert matter
Etc. functions, make high molecular polymer under the radiation of light, can exclude or slow down photochemical reaction possibility, prevent or delay light is old
The process of change extends high polymer product service life to reach.
Preferably, the optics additive is neodymium-doped optical grade calcium carbonate.
Preferably, the optical material refers to a kind of material that can be shone or change colour by light stimulus, wherein the material
Including the material by luminescence-utraviolet, the material by ultraviolet color-changing and the material of infrared light emission can be passed through.
Described to be not particularly limited by the material of luminescence-utraviolet, it is, for example, possible to use photo-luminescent pigments, photic hair
Photoinitiator dye etc..These materials can be used alone or two kinds and the use of two or more any combination thereofs.
The photo-luminescent pigment may include, for example, organic fluorescent pigment, inorganic fluorescent pigment etc..The luminescence generated by light
Pigment may include, for example, diphenyl ethylene derivatives class dyestuff, imidazole derivatives species dyestuff, benzimidazole dyestuff, cumarin spread out
Biological species dyestuff, diphenyl amine dyestuff etc..
The pigment and dyestuff of the luminescence generated by light can be used in the form of solid-state, liquid, powder etc., and preferably with powder shape
Formula uses.
The luminescence generated by light powder is lanthanide complex, organic fluorescence materials, inorganic fluorescent material etc., and preferably group of the lanthanides is matched
Close object.
The maximum excitation wavelength of the material by luminescence-utraviolet is not particularly limited, for example, the maximum excitation
Wavelength can be 300~450 nanometers, preferably 350~420 nanometers.The light of this and the laser of the used laser designator
And the light source of display is related, when the wavelength of the light is greater than 450 nanometers, is equivalent to visible light region, it can show with described
Show that the light source of device overlaps, to reduce visibility.
Preferably, the crosslinking agent is isocyanate compound, epoxide, melamine resinoid, aziridines
One or both of compound or more.
The second object of the present invention is realized using following methods:
A method of preparing the OCA optics adhesive, characterized in that be prepared using following steps:
1) reaction kettle is added in the polyester polyol, isocyanates and organotin catalysts according to formula ratio, in 80
~110 DEG C of mixings prepare performed polymer in 1.5-4 hours；
2) according to formula ratio by the hydrophilic chain extender, salt forming agent, optics additive, optical material, crosslinking agent and light
Stabilizer is added in step 1), under the conditions of 70-100 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by polyurethane gluing
Agent.
The third object of the present invention is realized using following scheme:
A kind of adhesive tape prepared using the OCA optics adhesive, characterized in that including substrate layer, release layer and by institute
State the adhesive layer that OCA optics adhesive is prepared；The substrate is polyolefin resin, polyester resin, cellulose family
Resin, polycarbonate resin, acrylic resin, styrene resin, vinyl chloride resin, amide resinoid, acid imide
Resinoid, polyether sulfone resin, sulfone resinoid, polyether etherketone resinoid, polyphenylene sulfide resinoid, vinyl alcohol resin, inclined two
It is vinyl chloride resin, butyral vinyl resins, acrylic resinoid, polyformaldehyde resinoid, any one in epoxylite
Kind；The substrate with a thickness of 5~100um；The release layer uses polyethylene terephthalate, polypropylene or polyethylene
One of be prepared.When the thickness of the base film is less than 5 microns, the mechanical strength of the base film may under
Drop, and when the thickness of the base film is more than 100 microns, toughness can decline, to may produce in adhesion process
Anger bubble.
Specific embodiment is as follows:
Embodiment 1
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 100 parts of HT38 polyester polyol, 50 parts of dicyclohexyl methyl hydride diisocyanate, 25 parts of tartaric acid, sodium hydroxide
20 parts, 1 part of organotin catalysts, 7701 parts of light stabilizer, 5 parts of neodymium-doped optical grade calcium carbonate, 5 parts of optical material, isocyanates
2 parts of compound.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) according to formula ratio by the HT38 polyester polyol, dicyclohexyl methyl hydride diisocyanate and organotin catalyzed
Reaction kettle is added in agent, is mixed 1.5 hours in 80 DEG C and prepares performed polymer；
2) according to formula ratio by the tartaric acid, sodium hydroxide, light stabilizer 770, optical material, neodymium-doped optical grade carbonic acid
Calcium and isocyanate compound are added in step 1), under the conditions of 70 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by gathering
Urethane adhesive.
Embodiment 2
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 200 parts of HT38 polyester polyol, 80 parts of dicyclohexyl methyl hydride diisocyanate, 50 parts of tartaric acid, sodium hydroxide
30 parts, 2 parts of organotin catalysts, 7702 parts of light stabilizer, 10 parts of neodymium-doped optical grade calcium carbonate, 10 parts of optical material, isocyanic acid
5 parts of ester compounds.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) according to formula ratio by the HT38 polyester polyol, dicyclohexyl methyl hydride diisocyanate and organotin catalyzed
Reaction kettle is added in agent, is mixed 3 hours in 100 DEG C and prepares performed polymer；
2) according to formula ratio by the tartaric acid, sodium hydroxide, light stabilizer 770, optical material, neodymium-doped optical grade carbonic acid
Calcium and isocyanate compound are added in step 1), under the conditions of 80 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by gathering
Urethane adhesive.
Embodiment 3
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 150 parts of polyester polyol, 80 parts of isocyanates, 50 parts of dihydromethyl propionic acid, 25 parts of ammonium hydroxide, organotin catalyzed
2 parts of agent, 9442 parts of light stabilizer, 8 parts of neodymium-doped optical grade calcium carbonate, 10 parts of optical material, 4 parts of crosslinking agent.The polyester polyols
Alcohol is the mixture for the pure and mild HT3000 polyester polyol of HT38 polyester polyols that mass ratio is 2:1；The isocyanates is quality
Than the mixture of dicyclohexyl methyl hydride diisocyanate and hexamethylene diisocyanate for 1:1；The optical material is energy
By the material of luminescence-utraviolet, which can also use photo-luminescent pigment, photoluminescent dyes etc., be used to prepare
The adhesive of different colours；The crosslinking agent is the mixture of the isocyanate compound that mass ratio is 1:1 and epoxide.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) reaction kettle is added in the polyester polyol, isocyanates and organotin catalysts according to formula ratio, in 90
It DEG C is mixed and to prepare performed polymer in 4 hours；
2) according to formula ratio by the hydrophilic chain extender, salt forming agent, optics additive, optical material, crosslinking agent and light
Stabilizer is added in step 1), under the conditions of 100 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by adhesive for polyurethane.
Embodiment 4
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 120 parts of HT756 polyester polyol, 60 parts of dicyclohexyl methyl hydride diisocyanate, 30 parts of tartaric acid, ammonium hydroxide 25
Part, 2 parts of organotin catalysts, 9442 parts of light stabilizer, 8 parts of neodymium-doped optical grade calcium carbonate, 10 parts of optical material, epoxide
4 parts.The optical material is can be by the material of luminescence-utraviolet, which can receive for 300~450
Rice, preferably 350~420 nanometers, this is related with the light source of the light of the laser of the used laser designator and display, when
When the wavelength of the light is greater than 450 nanometers, it is equivalent to visible light region, it can overlap with the light source of the display,
To reduce visibility.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) the HT756 polyester polyol, dicyclohexyl methyl hydride diisocyanate and organotin are urged according to formula ratio
Reaction kettle is added in agent, is mixed 2.5 hours in 110 DEG C and prepares performed polymer；
2) according to formula ratio by the tartaric acid, ammonium hydroxide, light stabilizer 944, optical material, neodymium-doped optical grade calcium carbonate and
Epoxide is added in step 1), under the conditions of 90 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by polyurethane gluing
Agent.
Embodiment 5
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 200 parts of HT38 polyester polyol, 50 parts of dicyclohexyl methyl hydride diisocyanate, 35 parts of tartaric acid, sodium hydroxide
25 parts, 2 parts of organotin catalysts, 7701 parts of light stabilizer, 5 parts of neodymium-doped optical grade calcium carbonate, 5 parts of optical material, isocyanates
2 parts of compound.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) according to formula ratio by the HT38 polyester polyol, dicyclohexyl methyl hydride diisocyanate and organotin catalyzed
Reaction kettle is added in agent, is mixed 3 hours in 100 DEG C and prepares performed polymer；
2) according to formula ratio by the tartaric acid, sodium hydroxide, light stabilizer 770, optical material, neodymium-doped optical grade carbonic acid
Calcium and isocyanate compound are added in step 1), under the conditions of 95 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by gathering
Urethane adhesive.
Embodiment 6
A kind of OCA optics adhesive, the OCA optics adhesive are Aqueous Polyurethane Adhesives, by parts by weight meter with
The following group is grouped as: 120 parts of polyester polyol, 80 parts of isocyanates, 50 parts of dihydromethyl propionic acid, 25 parts of sodium hydroxide, organotin
2 parts of catalyst, 9442 parts of light stabilizer, 8 parts of neodymium-doped optical grade calcium carbonate, 10 parts of optical material, 4 parts of crosslinking agent.The polyester
Polyalcohol be mass ratio be 1:2:1 HT3000 polyester polyol, the pure and mild HT756 polyester polyol of HT100 polyester polyols it is mixed
Close object；The isocyanates is the dicyclohexyl methyl hydride diisocyanate and hexamethylene diisocyanate that mass ratio is 2:1
Mixture；The optical material be can by the material of luminescence-utraviolet, the optical material can also use photo-luminescent pigment,
Photoluminescent dyes etc. are used to prepare the adhesive of different colours；The crosslinking agent is the isocyanates chemical combination that mass ratio is 1:1
The mixture of object and epoxide.
The preparation step of OCA optics adhesive described in the present embodiment is as follows:
1) reaction kettle is added in the polyester polyol, isocyanates and organotin catalysts according to formula ratio, in 100
It DEG C is mixed and to prepare performed polymer in 4 hours；
2) according to formula ratio by the hydrophilic chain extender, salt forming agent, optics additive, optical material, crosslinking agent and light
Stabilizer is added in step 1), under the conditions of 100 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by adhesive for polyurethane.
Optical adhesive tape is prepared using the OCA optics adhesive of above-mentioned six embodiments, obtains four kinds of optical adhesive tapes, number point
Not Wei optical adhesive tape 1-6, and optical adhesive tape of the invention and commercially available normal tape are compared.
1, above-mentioned four kinds of optical adhesive tapes are tested for the property with commercially available normal tape, comparison result see the table below 1:
The test of 1 properties of product of table
By 1 data of deck watch, the overall performance of the OCA optical adhesive tape of formula preparation of the present invention is common better than commercially available
Adhesive tape has higher adhesion, and thickness is uniform, for a long time using will not lead to the problem of xanthochromia, removing and rotten, and for
A variety of transparent materials such as electronic equipment all have good adhesive property and matching properties.
2, above-mentioned six kinds of optical adhesive tapes and commercially available normal tape are subjected to light transmittance detection, light transmittance uses light transmittance mist degree
Tester is tested, and reference standard GB/T 2410-2008,3 glass specimens of each sample preparation are tested, and compares knot
Fruit see the table below 2:
The light transmittance of the optical adhesive tape of the present invention of table 2 and commercially available normal tape detects
2 data of table it is found that optical adhesive tape of the present invention light transmittance be better than commercially available normal tape, in actual application,
The optical adhesive tape has high homogeneity, and the optical constant of each point everywhere is consistent with optical physics chemical property.
3, above-mentioned four kinds of optical adhesive tapes and commercially available normal tape are subjected to refractive index detection, edge inside optical adhesive tape of the present invention
The refractive index that any direction measures all is that it is different to compare the refractive index that adhesive tape all directions measure with being worth.
4, above-mentioned four kinds of optical adhesive tapes and commercially available normal tape are subjected to Thermal Expansion Detection, edge inside optical adhesive tape of the present invention
The thermal expansion coefficient that any direction measures all is that it is different to compare the thermal expansion coefficient that adhesive tape all directions measure with being worth.
It will be apparent to those skilled in the art that can make various other according to the above description of the technical scheme and ideas
Corresponding change and deformation, and all these changes and deformation all should belong to the protection scope of the claims in the present invention
Within.
Claims (10)
1. a kind of OCA optics adhesive, characterized in that the OCA optics adhesive is Aqueous Polyurethane Adhesives, by parts by weight
The following components of meter forms: 100~200 parts of polyester polyol, 50~80 parts of isocyanates, 25~50 parts of hydrophilic chain extender,
20~30 parts of salt forming agent, 1~2 part of organotin catalysts, 1~2 part of light stabilizer, 5~10 parts of optics additive, optical material 5
~10 parts, 2~5 parts of crosslinking agent.
2. OCA optics adhesive according to claim 1, characterized in that the polyester polyol is HT38 polyester polyols
One of alcohol, HT3000 polyester polyol, HT100 polyester polyol, HT756 polyester polyol, HT218 polyester polyol or
Two kinds, molecular weight is 600~1000.
3. OCA optics adhesive according to claim 1, characterized in that the isocyanates is dicyclohexyl methyl hydride two
One or both of isocyanates, hexamethylene diisocyanate, isophorone diisocyanate or more.
4. OCA optics adhesive according to claim 1, characterized in that the aqueous chain extender is tartaric acid, dihydroxy first
One of base propionic acid, dimethylolpropionic acid half ester.
5. OCA optics adhesive according to claim 1, characterized in that the salt forming agent is sodium hydroxide, ammonium hydroxide, three
One of ethamine.
6. OCA optics adhesive according to claim 1, characterized in that the light stabilizer is light stabilizer 770, light
One of stabilizer 944, light stabilizer 292 are a variety of；The optics additive is neodymium-doped optical grade calcium carbonate.
7. OCA optics adhesive according to claim 1, characterized in that the optical material, which refers to, a kind of can pass through light
Stimulation and shine or discoloration material, wherein the material include can by the material of luminescence-utraviolet, by ultraviolet color-changing
Material and material by infrared light emission.
8. OCA optics adhesive according to claim 1, characterized in that the crosslinking agent is isocyanate compound, ring
One or both of oxygen compound, melamine resinoid, aziridines compound or more.
9. a kind of method for preparing the OCA optics adhesive according to the claims, characterized in that use following steps system
It is standby to form:
1) reaction kettle is added in the polyester polyol, isocyanates and organotin catalysts according to formula ratio, in 80~110
It DEG C is mixed and to prepare performed polymer in 1.5-4 hours；
2) hydrophilic chain extender, salt forming agent, optics additive, optical material, crosslinking agent and light are stablized according to formula ratio
Agent is added in step 1), under the conditions of 70-100 DEG C of temperature after Hybrid Heating reaction chain extension, can be prepared by adhesive for polyurethane.
10. it is a kind of using OCA optics adhesive described in the claims prepare adhesive tape, characterized in that including substrate layer, from
Type layer and the adhesive layer being prepared by the OCA optics adhesive；The substrate is polyolefin resin, polyesters tree
Rouge, cellulosic resin, polycarbonate resin, acrylic resin, styrene resin, vinyl chloride resin, amides
Resin, imide resin, polyether sulfone resin, sulfone resinoid, polyether etherketone resinoid, polyphenylene sulfide resinoid, vinyl alcohol
Resinoid, vinylidene chloride like resin, butyral vinyl resins, acrylic resinoid, polyformaldehyde resinoid, epoxylite
In any one；The substrate with a thickness of 5~100um；The release layer uses polyethylene terephthalate, poly- third
One of alkene or polyethylene are prepared.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811200197.8A CN109401714A (en) | 2018-10-16 | 2018-10-16 | A kind of OCA optics adhesive and its preparation method and application |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811200197.8A CN109401714A (en) | 2018-10-16 | 2018-10-16 | A kind of OCA optics adhesive and its preparation method and application |
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| CN109401714A true CN109401714A (en) | 2019-03-01 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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