CN109796902A - A kind of Vehicular display device optics pressure sensitive adhesive and preparation method thereof - Google Patents
A kind of Vehicular display device optics pressure sensitive adhesive and preparation method thereof Download PDFInfo
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- CN109796902A CN109796902A CN201910074841.XA CN201910074841A CN109796902A CN 109796902 A CN109796902 A CN 109796902A CN 201910074841 A CN201910074841 A CN 201910074841A CN 109796902 A CN109796902 A CN 109796902A
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Abstract
The invention belongs to optics pressure sensitive adhesive technical fields, more particularly, to a kind of Vehicular display device optics pressure sensitive adhesive and preparation method thereof.Vehicular display device optics pressure sensitive adhesive in the present invention, is mainly grouped as by the group of following parts by weight: dendritic acrylic copolymer 15-55 parts, 45-85 parts of single double bond acrylic ester monomer, 0.01-0.1 parts of crosslinking agent, 0.05-0.9 parts of photoinitiator and 0.01-0.08 parts of levelling agent.It is acted on by the cooperation of each component, obtained optics pressure sensitive adhesive greatly improves the fillibility and adhesion strength of product while guaranteeing reliability.
Description
Technical field
The present invention relates to optics pressure sensitive adhesive technical field, more particularly, to a kind of Vehicular display device optics pressure sensitive adhesive and its
Preparation method.
Background technique
With flourishing for Vehicular display device industry, between original touch screen (TP) and display module (LCM) because of
There is iron frame, optics pressure sensitive adhesive (OCA) can not accomplish 500 μm or more of thickness, and entire industry is filled using basic glue, with
Iron frame is gradually cancelled, and display device structure is thinning, and the optics pressure sensitive adhesive of thickness is gradually applied by market between 150 μm -350 μm.That
The optics pressure sensitive adhesive that filling adhesive effect is played in Vehicular display device is particularly important.
The raw material that conventional optical pressure sensitive glue formula uses is use prepolymer containing double bonds or long chain third
The polymer of olefin(e) acid esters, addition initiator, the monomer of esters of acrylic acid, antioxidant, levelling agent etc. carry out according to a certain percentage
It is mixed into optics pressure sensitive adhesive glue.By glue application between release film, then solidification winding obtains finished product.This OCA formula
Fillibility can be made big, but use and be difficult to obtain good fillibility on vehicle-mounted, because filling better, glue
Bulk properties is softer, then corresponding adhesion strength and reliability will decline, it is assumed that and soft monomer is placed excessively, then 105 DEG C/
The stringent reliability test of this comparison of 1000H just will appear the bad problem such as bubble.Therefore common vehicle-mounted in the market
Optical pressure sensitive glue padding only has 20% or so, and (200 μm of optics pressure sensitive adhesives can be used in 40 μm of ink cover board glass below
Glass).
In consideration of it, the present invention is specifically proposed.
Summary of the invention
It is an object of the present invention to provide a kind of Vehicular display device optics pressure sensitive adhesives, to solve to exist in the prior art
Optics pressure sensitive adhesive use and be difficult to obtain good fillibility on vehicle-mounted or fillibility is fine, but adhesion strength and trust
The poor problem of property.By the present invention in that mixed with the polymer and acrylic ester monomer of resin-like, photoinitiator and levelling agent
It closes, the fillibility and adhesion strength of product is greatly improved while guaranteeing reliability.
It is a further object to provide a kind of preparation method of Vehicular display device optics pressure sensitive adhesive, this method behaviour
Make simply, cost is relatively low, by the way that each component to be mixed to and carried out ultraviolet light, can be obtained with preferable reliability, filling
The optics pressure sensitive adhesive of property and adhesion strength.
In order to realize above-mentioned purpose of the invention, the following technical scheme is adopted:
A kind of Vehicular display device optics pressure sensitive adhesive, is mainly grouped as by the group of following parts by weight:
Dendritic acrylic copolymer 15-55 parts, 45-85 parts of single double bond acrylic ester monomer, crosslinking agent 0.01-
0.1 part, 0.05-0.9 parts of photoinitiator and 0.01-0.08 parts of levelling agent.
Preferably, the Vehicular display device is mainly grouped as by the group of following parts by weight with optics pressure sensitive adhesive:
Dendritic acrylic copolymer 20-50 parts, 50-80 parts of single double bond acrylic ester monomer, crosslinking agent 0.05-
0.08 part, 0.3-0.8 parts of photoinitiator and 0.02-0.05 parts of levelling agent.
Preferably, the dendritic acrylic copolymer is acrylic ester copolymer of the weight average molecular weight 150,000-60 ten thousand
The acrylate copolymer of object, more preferably weight average molecular weight 300,000-60 ten thousand.
Preferably, the structural formula of the dendritic acrylic copolymer are as follows:
Preferably, the element number x in the branch Rx of the dendritic acrylic copolymer is 5-30, preferably 10-
25；
Preferably, the element number n in the Rn in the main chain of the dendritic acrylic copolymer is 5-50, preferably
20-40；
Preferably, by weight percentage, the dendritic acrylic copolymer is the Tg temperature by 70%-85%
The single double bond esters of acrylic acid of temperature >=80 DEG C Tg of≤- 10 DEG C of single double bond acrylic ester monomer and 15%-30%
Monomer or propylene Monomer of acyls are copolymerized to obtain；
It is highly preferred that the single double bond acrylic ester monomer of temperature≤- 10 DEG C Tg is selected from Isooctyl acrylate monomer, third
Olefin(e) acid isobutyl ester, 2 (2- ethoxy ethoxy) ethyl propylene acid esters, tetrahydrofuran acrylate, dodecyl acrylate, ten
Dialkyl methyl acrylate, isodecyl acrylate, Isooctyl acrylate monomer, caprolactone and the poly- diethanol of methoxyl group list
At least one of acrylate；
It is highly preferred that the single double bond acrylate monomer and acrylamide monomers of temperature >=80 DEG C Tg are selected from third
Olefin(e) acid ester, isobornyl acrylate, isobornyl methacrylate, aromatic acrylates, 3,3,5- trimethyl-cyclohexanes third
At least one of olefin(e) acid ester, acryloyl morpholine and acrylamide.
Preferably, the crosslinking agent is the acrylic ester monomer of two double bonds, it is preferable that the crosslinking agent is selected from hexamethylene
Alkane Dimethanol Diacrylate, 1,4-butanediol dimethylacrylate, dimethacrylate, 1,6 hexylene glycols
Diacrylate, 1, at least one of 3 butanediol dimethylacrylates and dipropylene glycol diacrylate.
Preferably, the acrylic ester monomer of the single double bond is selected from Isooctyl acrylate monomer, isobutyl acrylate, 2 (2-
Ethoxy ethoxy) ethyl propylene acid esters, tetrahydrofuran acrylate, dodecyl acrylate, dodecyl methyl propylene
Mono acrylic ester, the acrylic acid of the poly- diethanol of acid esters, isodecyl acrylate, Isooctyl acrylate monomer, caprolactone, methoxyl group
Ester, isobornyl acrylate, isobornyl methacrylate, aromatic acrylates and 3,3,5- trimethyl-cyclohexane acrylic acid
At least one of ester.
Preferably, the photoinitiator is selected from 1- hydroxycyclohexyl phenyl ketone, photoinitiator 1713, photoinitiator MBF
At least one of with photoinitiator TPO；
Preferably, the levelling agent in levelling agent BYK333, levelling agent BYK-336 and levelling agent BYK-341 extremely
Few one kind.
The preparation method of Vehicular display device optics pressure sensitive adhesive as described above, comprising the following steps:
(a) by dendritic acrylic copolymer, single double bond acrylic ester monomer, crosslinking agent, photoinitiator and stream
Flat agent mixing；
(b) glue application after the completion of mixing in step (a) is obtained into car-mounted display between two layers of release film after solidification
Device optics pressure sensitive adhesive.
Preferably, the mixed temperature is 30-40 DEG C, more preferably 35-40 DEG C.
Preferably, the solidification uses ultraviolet light；
Preferably, the light intensity of the ultraviolet light is 20-180mw/cm2, more preferably 20-100mw/cm2；
Preferably, the energy of the ultraviolet light is 1000-1600mj/cm2, more preferably 1200-1500mj/cm2。
Compared with the prior art, the invention has the following beneficial effects:
(1) Vehicular display device in the present invention is with optics pressure sensitive adhesive mainly by forming following weight percentage components: tree
Dendritic 15-55 parts of acrylic copolymer, 45-85 parts of single double bond acrylic ester monomer, 0.01-0.1 parts of crosslinking agent, light draw
Agent 0.05-0.9 parts and levelling agent 0.01-0.08 parts of hair.It is acted on by the cooperation of each component, obtained optics pressure sensitive adhesive exists
Guarantee to greatly improve the fillibility and adhesion strength of product while reliability.The present invention uses dendritic acroleic acid polymerization
Object, main chain provides preferable reliability and preferably adhesion strength, and soft collateral chain provides preferable fillibility,
It is bonded factory, after fitting, into high temperature and pressure deaeration, under high temperature and pressure, branch is moved, and it is oily to can be very good filling
The step between ink placement and glass is filled, so that ink fillibility be made to be easily reached 30-45% in the position at black dead angle.
(2) preparation method of the Vehicular display device optics pressure sensitive adhesive in the present invention, easy to operate, cost is relatively low, passes through
Each component is mixed to and carried out ultraviolet light, the optics pressure sensitive adhesive with preferable reliability and adhesion strength can be obtained.
Specific embodiment
Embodiment of the present invention is described in detail below in conjunction with embodiment, but those skilled in the art will
Understand, the following example is merely to illustrate the present invention, and is not construed as limiting the scope of the invention.It is not specified in embodiment specific
Condition person carries out according to conventional conditions or manufacturer's recommended conditions.Reagents or instruments used without specified manufacturer is
The conventional products that can be obtained by commercially available purchase.
A kind of Vehicular display device optics pressure sensitive adhesive, is mainly grouped as by the group of following parts by weight:
Dendritic acrylic copolymer 15-55 parts, 45-85 parts of single double bond acrylic ester monomer, crosslinking agent 0.01-
0.1 part, 0.05-0.9 parts of photoinitiator and 0.01-0.08 parts of levelling agent.
The present invention is by using 2015-55 parts of dendritic acrylic copolymers, 45-85 parts of single double bond esters of acrylic acid
Monomer, 0.01-0.1 part crosslinking agent, 0.05-0.9 parts of photoinitiators and 0.01-0.08 parts of levelling agents, match in the coordination of each component
Cooperating the optics pressure sensitive adhesive obtained under has excellent reliability and cohesive force, and the fillibility of product can be improved.
Preferably, the Vehicular display device is mainly grouped as by the group of following parts by weight with optics pressure sensitive adhesive:
Dendritic acrylic copolymer 20-50 parts, 50-80 parts of single double bond acrylic ester monomer, crosslinking agent 0.05-
0.08 part, 0.3-0.8 parts of photoinitiator and 0.02-0.05 parts of levelling agent.
By the parts by weight of further preferred each component, obtained Vehicular display device has more excellent with optics pressure sensitive adhesive
Different reliability and cohesive force.
Preferably, the dendritic acrylic copolymer is acrylic ester copolymer of the weight average molecular weight 150,000-60 ten thousand
The acrylate copolymer of object, more preferably weight average molecular weight 300,000-60 ten thousand.
Preferably, the structural formula of the dendritic acrylic copolymer are as follows:
Preferably, the element number x in the branch Rx of the dendritic acrylic copolymer is 5-30, preferably 10-
25；
Preferably, the element number n in the Rn in the main chain of the dendritic acrylic copolymer is 5-50, preferably
20-40；
The structure of existing acrylate copolymer is as follows, and the present invention is using dendritic acrylate copolymer, dendroid
The main chain of acrylate copolymer play the subjective role of entire formula reliability, can satisfy preferable reliability so that
It is not in the problems such as bubble is with yellow side in bonding the reliability test after display.Simultaneously at normal temperature, dendritic
Strand is intertwine with each other, so that the elongation at break of OCA is big, it is not easy to it is disconnected, therefore client because be bonded it is bad caused by do over again
After tearing screen open, OCA is particularly easy to clean up from display.In addition dendritic branch, while under the conditions of pressurizeing deaeration, branch
It is moved by temperature and pressure, is easy to fill the gap in the regions such as oily ink dead angle, it is highly filled so as to reach
Purpose.
Conventional acrylic polymer architecture
Preferably, by weight percentage, the dendritic acrylic copolymer is the Tg temperature by 70%-85%
The single double bond esters of acrylic acid of temperature >=80 DEG C Tg of≤- 10 DEG C of single double bond acrylic ester monomer and 15%-30%
Monomer or propylene Monomer of acyls are copolymerized to obtain；
Pass through the single double bond acrylic ester monomer of temperature≤- 10 DEG C Tg and single double bond acrylic acid of temperature >=80 DEG C Tg
The acrylic copolymer main chain that esters monomer or propylene Monomer of acyls are copolymerized provides preferable reliability and preferably bonds
Power, branch provide preferable fillibility.
It is highly preferred that the single double bond acrylic ester monomer of temperature≤- 10 DEG C Tg is selected from Isooctyl acrylate monomer, third
Olefin(e) acid isobutyl ester, 2 (2- ethoxy ethoxy) ethyl propylene acid esters, tetrahydrofuran acrylate, dodecyl acrylate, ten
Dialkyl methyl acrylate, isodecyl acrylate, Isooctyl acrylate monomer, caprolactone and the poly- diethanol of methoxyl group list
At least one of acrylate；
It is highly preferred that the single double bond acrylate monomer and acrylamide monomers of temperature >=80 DEG C Tg are selected from third
Olefin(e) acid ester, isobornyl acrylate, isobornyl methacrylate, aromatic acrylates, 3,3,5- trimethyl-cyclohexanes third
At least one of olefin(e) acid ester, acryloyl morpholine and acrylamide.
Preferably, the crosslinking agent is the acrylic ester monomer of two double bonds, it is preferable that the crosslinking agent is selected from hexamethylene
Alkane Dimethanol Diacrylate, 1,4-butanediol dimethylacrylate, dimethacrylate, 1,6 hexylene glycols
Diacrylate, 1, at least one of 3 butanediol dimethylacrylates and dipropylene glycol diacrylate.
The present invention is by being added cyclohexane dimethanol diacrylate, 1,4-butanediol dimethylacrylate, diethyl two
The crosslinking agents such as alcohol dimethylacrylate generate chemical bond between the molecule of line style, are connected with each other linear molecule, shape
Structure is reticulated, so that the optics pressure sensitive adhesive arrived intensity with higher and elasticity.
Preferably, the acrylic ester monomer of the single double bond is selected from Isooctyl acrylate monomer, isobutyl acrylate, 2 (2-
Ethoxy ethoxy) ethyl propylene acid esters, tetrahydrofuran acrylate, dodecyl acrylate, dodecyl methyl propylene
Mono acrylic ester, the acrylic acid of the poly- diethanol of acid esters, isodecyl acrylate, Isooctyl acrylate monomer, caprolactone, methoxyl group
Ester, isobornyl acrylate, isobornyl methacrylate, aromatic acrylates and 3,3,5- trimethyl-cyclohexane acrylic acid
At least one of ester.
Preferably, the photoinitiator is selected from 1- hydroxycyclohexyl phenyl ketone, photoinitiator 1713, photoinitiator MBF
At least one of with photoinitiator TPO；
Photoinitiator is that one kind can absorb centainly in ultraviolet region (250~420nm) or visible region (400~800nm)
The energy of wavelength generates free radicals, cation etc., to cause the compound of monomer polymerization crosslinking curing.The present invention passes through choosing
With at least one of 1- hydroxycyclohexyl phenyl ketone, photoinitiator 1713, photoinitiator MBF and photoinitiator TPO, can have
Effect ground makes glue curing, the optics pressure sensitive adhesive being had excellent performance.
Preferably, the levelling agent in levelling agent BYK333, levelling agent BYK-336 and levelling agent BYK-341 extremely
Few one kind.
The present invention is used as levelling agent using at least one of BYK333, BYK-336 and BYK-341, can improve covering with paint liquid
Permeability, a possibility that spot and spot are generated when can be reduced brushing, increase spreadability, make film forming uniformly, it is natural.
The preparation method of Vehicular display device optics pressure sensitive adhesive as described above, comprising the following steps:
(a) by dendritic acrylic copolymer, single double bond acrylic ester monomer, crosslinking agent, photoinitiator and stream
Flat agent mixing；
(b) glue application after the completion of mixing in step (a) is obtained into car-mounted display between two layers of release film after solidification
Device optics pressure sensitive adhesive.
Preparation method is simple for Vehicular display device optics pressure sensitive adhesive in the present invention, the light obtained by this method
Learning pressure sensitive adhesive has excellent reliability and cohesive force.
Preferably, the mixed temperature is 30-40 DEG C, more preferably 35-40 DEG C.
Typical but non-limiting mixed temperature is, for example, 30 DEG C, 31 DEG C, 32 DEG C, 33 DEG C, 34 DEG C, 35 DEG C, 36 DEG C, 37
DEG C, 38 DEG C, 39 DEG C or 40 DEG C.
Preferably, the solidification uses ultraviolet light；
Preferably, the light intensity of the ultraviolet light is 20-180mw/cm2, more preferably 20-100mw/cm2；
The typical but non-limiting light intensity of ultraviolet light is, for example, 50mw/cm2、60mw/cm2、80mw/cm2、100mw/
cm2、120mw/cm2、150mw/cm2Or 180mw/cm2。
Preferably, the energy of the ultraviolet light is 1000-1600mj/cm2, more preferably 1200-1500mj/cm2。
The typical but non-limiting energy of ultraviolet light is, for example, 1000mj/cm2、1100mj/cm2、1200mj/cm2、
1300mj/cm2、1400mj/cm2、1500mj/cm2Or 1600mj/cm2。
The preparation method of Vehicular display device optics pressure sensitive adhesive as described above, specifically includes the following steps:
By dendritic acrylic copolymer, single double bond acrylic ester monomer, crosslinking agent, photoinitiator and levelling agent
It is blended under 30-40 DEG C of high temperature and is stirred, after mixing evenly, obtained glue is coated on coating machine, passes through painting
Glue application between two layers of release film, is carried out UV irradiation by UV illumination unit, UV lamp is Metal halogen lamp, and UV irradiates item by the leftover of bolt of cloth
Part are as follows: light intensity 20-180mw/cm2, UV energy: 1000-1600mj/cm2.It is wound to obtain OCA product after irradiation.Fitting is de-
After bubble, UV irradiation, UVA irradiation condition are as follows: 2000-4000mj/cm are carried out2。
Below with reference to specific embodiment and comparative example, the present invention will be further described.
Embodiment 1
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
20 parts of dendritic acrylic copolymer, 65 parts of Isooctyl acrylate monomer, 8 parts of acrylate hydroxypropyl acrylate, acrylic acid ice
4 parts of piece ester, 3 parts of butyl acrylate, 0.03 part of 1,6 hexanediyl ester, 0.4 part of 1- hydroxycyclohexyl phenyl ketone,
MBF0.4 parts and 0.01 part of levelling agent BYK333；
The dendritic acrylic copolymer is by Isooctyl acrylate monomer 75%, hydroxypropyl acrylate 10% and acrylic acid
The copolymer of norbornene ester 15%；The weight average molecular weight 500,000 of dendritic acrylic copolymer, wherein branching units quantity is 20,
Branch spacer units quantity 50 in backbone units；
The preparation method of the Vehicular display device optics pressure sensitive adhesive, comprising the following steps:
By dendritic acrylic copolymer, Isooctyl acrylate monomer, acrylate hydroxypropyl acrylate, acrylic acid norbornene ester, propylene
Acid butyl ester, 1,6 hexanediyl esters, 1- hydroxycyclohexyl phenyl ketone, MBF0.4 parts and levelling agent BYK333 mixing,
It is stirred at 38 DEG C, after mixing evenly, the glue after the completion of mixing is coated on coating machine, by coating head by glue
Water is coated between two layers of release film, 150 μm of coating thickness, carries out UV irradiation by UV illumination unit, UV lamp is Metal halogen lamp, UV
Irradiation condition are as follows: light intensity 150mw/cm2, UV energy: 1500mj/cm2, wound after irradiation, obtain Vehicular display device optics
Pressure sensitive adhesive；
Optics pressure sensitive adhesive is bonded according to the structure of TP+OCA+LCM (12 cun), then deaeration carries out 3000mj/ again
cm2Solidification irradiation.
Embodiment 2
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
50 parts of dendritic acrylic copolymer, 30 parts of tetrahydrofuran acrylate, 10 parts of dodecyl acrylate, third
4 parts of olefin(e) acid isobornyl thiocyanoacetate, 6 parts of isobornyl methacrylate, 0.04 part of 1,4-butanediol dimethylacrylate, photoinitiator
1713 0.3 parts and 0.08 part of levelling agent BYK333.
The dendritic acrylic copolymer be 70% tetrahydrofuran acrylate, 10% dodecyl acrylate,
The copolymer of 10% isobornyl acrylate and 10% isobornyl methacrylate；Dendritic acrylic copolymer is divided equally again
Son amount 600,000, wherein branching units quantity is 30, the branch spacer units quantity 50 in backbone units；
The preparation method of the Vehicular display device optics pressure sensitive adhesive, comprising the following steps:
By dendritic acrylic copolymer, tetrahydrofuran acrylate, dodecyl acrylate, isobomyl acrylate
Ester, isobornyl methacrylate, 0.1 part of 1,4-butanediol dimethylacrylate, photoinitiator 1713 and levelling agent
BYK333 mixing, is stirred at 35 DEG C, after mixing evenly, the glue after the completion of mixing is coated on coating machine,
By coating head by glue application between two layers of release film, 100 μm of coating thickness, by UV illumination unit carry out UV irradiation,
UV lamp is Metal halogen lamp, UV irradiation condition are as follows: light intensity 120mw/cm2, UV energy: 1600mj/cm2, wound, obtained after irradiation
Vehicular display device optics pressure sensitive adhesive；
Optics pressure sensitive adhesive is bonded according to the structure of TP+OCA+LCM (12 cun), then deaeration carries out 3000mj/ again
cm2Solidification irradiation.
Embodiment 3
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
52 parts of dendritic acrylic copolymer, 35 parts of caprolactone, 20 parts of dodecyl acrylate, acrylic acid
15 parts of isobornyl thiocyanoacetate, 12 parts of Isooctyl acrylate monomer, 0.05 part of 1,4-butanediol dimethylacrylate, photoinitiator 1,713 0.6
Part and 0.05 part of levelling agent BYK333.
The dendritic acrylic copolymer is 65% caprolactone, 20% dodecyl acrylate, 10%
The copolymer of isobornyl acrylate and 5% isobornyl methacrylate；Dendritic acrylic copolymer weight average molecular weight
450000, wherein branching units quantity is 20, the branch spacer units quantity 40 in backbone units；
The preparation method of the Vehicular display device optics pressure sensitive adhesive, comprising the following steps:
By dendritic acrylic copolymer, caprolactone, dodecyl acrylate, isobornyl acrylate,
Isooctyl acrylate monomer, 1,4-butanediol dimethylacrylate, photoinitiator 1713 and levelling agent BYK333 mixing, at 40 DEG C
It is stirred, after mixing evenly, the glue after the completion of mixing is coated on coating machine, by coating head by glue application
Between two layers of release film, 150 μm of coating thickness, UV irradiation is carried out by UV illumination unit, UV lamp is Metal halogen lamp, and UV irradiates item
Part are as follows: light intensity 180mw/cm2, UV energy: 1600mj/cm2, wound after irradiation, obtain Vehicular display device optical pressure sensitive
Glue；
Optics pressure sensitive adhesive is bonded according to the structure of TP+OCA+LCM (12 cun), then deaeration carries out 2500mj/ again
cm2Solidification irradiation.
Embodiment 4
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
18 parts of dendritic acrylic copolymer, 30 parts of dodecyl methyl acrylate, 10 parts of isodecyl acrylate, third
3 parts of olefin(e) acid isobornyl thiocyanoacetate, 5 parts of Isooctyl acrylate monomer, 0.04 part of 1,3 butanediol dimethylacrylate, photoinitiator 1713
0.4 part and 0.03 part of levelling agent BYK333.
The dendritic acrylic copolymer is 65% caprolactone, 20% isodecyl acrylate, 10% propylene
The copolymer of sour isobornyl thiocyanoacetate and 5% aromatic acrylates；Dendritic acrylic copolymer weight average molecular weight 400,000, wherein
Branching units quantity is 28, the branch spacer units quantity 45 in backbone units；
The preparation method of the Vehicular display device optics pressure sensitive adhesive, comprising the following steps:
By dendritic acrylic copolymer, dodecyl methyl acrylate, isodecyl acrylate, isobomyl acrylate
Ester, Isooctyl acrylate monomer, 1,3 butanediol dimethylacrylates, photoinitiator 1713 and levelling agent BYK333 mixing, at 30 DEG C
Under be stirred, after mixing evenly, the glue after the completion of mixing is coated on coating machine, is applied glue by coating head
Cloth carries out UV irradiation between two layers of release film, by UV illumination unit, and UV lamp is Metal halogen lamp, UV irradiation condition are as follows: light intensity
150mw/cm2, UV energy: 1400mj/cm2, wound after irradiation, obtain Vehicular display device optics pressure sensitive adhesive；
Optics pressure sensitive adhesive is bonded according to the structure of TP+OCA+LCM (12 cun), then deaeration carries out 3500mj/ again
cm2Solidification irradiation.
Embodiment 5
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
15 parts of dendritic acrylic copolymer, 30 parts of Isooctyl acrylate monomer, 5 parts of acrylate hydroxypropyl acrylate, acrylic acid ice
5 parts of piece ester, 5 parts of butyl acrylate, 0.01 part of 1,6 hexanediyl ester, 0.02 part of 1- hydroxycyclohexyl phenyl ketone,
MBF0.03 parts and 0.01 part of levelling agent BYK333；
The dendritic acrylic copolymer is same as Example 1.
The preparation method of the Vehicular display device optics pressure sensitive adhesive is same as Example 1.
Embodiment 6
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
55 parts of dendritic acrylic copolymer, 20 parts of Isooctyl acrylate monomer, 10 parts of acrylate hydroxypropyl acrylate, acrylic acid ice
9 parts of piece ester, 6 parts of butyl acrylate, 0.1 part of 1,6 hexanediyl ester, 0.08 part of 1- hydroxycyclohexyl phenyl ketone,
MBF0.5 parts and 0.4 part of levelling agent BYK333；
The dendritic acrylic copolymer is same as Example 1.
The preparation method of the Vehicular display device optics pressure sensitive adhesive is same as Example 1.
Comparative example 1
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
5 parts of dendritic acrylic copolymer, 65 parts of Isooctyl acrylate monomer, 8 parts of acrylate hydroxypropyl acrylate, acrylic acid borneol
4 parts of ester, 3 parts of butyl acrylate, 0.03 part of 1,6 hexanediyl ester, 0.4 part of 1- hydroxycyclohexyl phenyl ketone,
MBF0.4 parts and 0.01 part of levelling agent BYK333；
The dendritic acrylic copolymer is same as Example 1.
The preparation method of the Vehicular display device optics pressure sensitive adhesive is same as Example 1.
Unlike the first embodiment, the parts by weight of dendritic acrylic copolymer will not protected in the present invention in comparison 1
Within the scope of shield.
Comparative example 2
A kind of Vehicular display device optics pressure sensitive adhesive, mainly by forming following weight percentage components:
5 parts of dendritic acrylic copolymer, 70 parts of Isooctyl acrylate monomer, 10 parts of acrylate hydroxypropyl acrylate, acrylic acid ice
5 parts of piece ester, 10 parts of butyl acrylate, 0.005 part of 1,6 hexanediyl ester, 1- hydroxycyclohexyl phenyl ketone 0.005
Part, MBF0.002 parts and 0.005 part of levelling agent BYK333；
Unlike the first embodiment, in comparison 2 content of each component not within scope of protection of the present invention.
Comparative example 3
A kind of conventional full fitting OCA is identical as the post cure condition of embodiment 1.
Test example
Adhesion strength, optical property and reliability are carried out to the TP+OCA+LCM in embodiment 1-6, comparative example 1 and comparative example 2
It can test, test result is as shown in Table 1；
As shown in Table 1, the optics pressure sensitive adhesive that 1-6 of the embodiment of the present invention is prepared, it is main using dendritic polymer
Chain provides preferable reliability and preferably adhesion strength, and soft collateral chain provides preferable fillibility, manufactured
TP+OCA+LCM has excellent cohesive force and reliability, is routinely bonded OCA better than the prior art.
Unlike the first embodiment, the parts by weight of dendritic acrylic copolymer are not at this in comparison 1 for comparative example 1
Within invention scope of protection；Unlike the first embodiment, the content of each component is not in the present invention in comparison 2 for comparative example 2
Within scope of protection.TP+OCA+LCM made of optics pressure sensitive adhesive in comparison 1 and comparison 2 is in adhesion strength and trusts performance
Aspect is relatively poor.It follows that the optics pressure sensitive adhesive each component in the present invention is in scope of protection of the present invention, and lead to
The cooperation effect between each component is crossed, just can get adhesion strength and trusts the optics pressure sensitive adhesive haveing excellent performance.
Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention., rather than its limitations；To the greatest extent
Pipe present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that: its according to
So be possible to modify the technical solutions described in the foregoing embodiments, or to some or all of the technical features into
Row equivalent replacement；And these are modified or replaceed, various embodiments of the present invention technology that it does not separate the essence of the corresponding technical solution
The range of scheme.
Claims (10)
1. a kind of Vehicular display device optics pressure sensitive adhesive, which is characterized in that be mainly grouped as by the group of following parts by weight:
Dendritic acrylic copolymer 15-55 parts, 45-85 parts of single double bond acrylic ester monomer, crosslinking agent 0.01-0.1
Part, 0.05-0.9 parts of photoinitiator and 0.01-0.08 parts of levelling agent.
2. Vehicular display device optics pressure sensitive adhesive according to claim 1, which is characterized in that the Vehicular display device is used up
Pressure sensitive adhesive is learned mainly to be grouped as by the group of following parts by weight:
Dendritic acrylic copolymer 20-50 parts, 50-80 parts of single double bond acrylic ester monomer, crosslinking agent 0.05-0.08
Part, 0.3-0.8 parts of photoinitiator and 0.02-0.05 parts of levelling agent.
3. Vehicular display device optics pressure sensitive adhesive according to claim 1 or 2, which is characterized in that described dendritic third
Olefin(e) acid copolymer is weight average molecular weight in 150,000-60 ten thousand acrylate copolymer, and more preferably weight average molecular weight is 300,000-60
Ten thousand acrylate copolymer.
4. Vehicular display device optics pressure sensitive adhesive according to claim 1 or 2, which is characterized in that described dendritic third
The structural formula of olefin(e) acid copolymer are as follows:
Preferably, the element number x in the branch Rx of the dendritic acrylic copolymer is 5-30, preferably 10-25；
Preferably, the element number n in the Rn in the main chain of the dendritic acrylic copolymer is 5-50, preferably 20-
40；
Preferably, by weight percentage, the dendritic acrylic copolymer is temperature≤- 10 Tg by 70%-85%
DEG C single double bond acrylic ester monomer and 15%-30% temperature >=80 DEG C Tg single double bond acrylic ester monomer or
Propylene Monomer of acyls is copolymerized to obtain；
It is highly preferred that the single double bond acrylic ester monomer of temperature≤- 10 DEG C Tg is selected from Isooctyl acrylate monomer, acrylic acid
Isobutyl ester, 2 (2- ethoxy ethoxy) ethyl propylene acid esters, tetrahydrofuran acrylate, dodecyl acrylate, dodecane
Methyl acrylate, isodecyl acrylate, Isooctyl acrylate monomer, caprolactone and the poly- diethanol of methoxyl group single propylene
At least one of acid esters；
It is highly preferred that the single double bond acrylate monomer and acrylamide monomers of temperature >=80 DEG C Tg are selected from acrylic acid
Ester, isobornyl acrylate, isobornyl methacrylate, aromatic acrylates, 3,3,5- trimethyl-cyclohexane acrylic acid
At least one of ester, acryloyl morpholine and acrylamide.
5. Vehicular display device optics pressure sensitive adhesive according to claim 1 or 2, which is characterized in that the crosslinking agent is two
The acrylic ester monomer of a double bond, it is preferable that the crosslinking agent is selected from cyclohexane dimethanol diacrylate, 1,4-butanediol
Dimethylacrylate, dimethacrylate, 1,6 hexanediyl esters, 1,3 butanediol dimethyl allenes
At least one of acid esters and dipropylene glycol diacrylate.
6. Vehicular display device optics pressure sensitive adhesive according to claim 1 or 2, which is characterized in that the single double bond
Acrylic ester monomer is selected from Isooctyl acrylate monomer, isobutyl acrylate, 2 (2- ethoxy ethoxy) ethyl propylene acid esters, four
Hydrogen furanacrylate, dodecyl acrylate, dodecyl methyl acrylate, isodecyl acrylate, acrylic acid are different pungent
Mono acrylic ester, acrylate, isobornyl acrylate, the methacrylic acid of the poly- diethanol of ester, caprolactone, methoxyl group
Isobornyl thiocyanoacetate, aromatic acrylates and 3, at least one of 3,5- trimethyl-cyclohexane acrylate.
7. Vehicular display device optics pressure sensitive adhesive according to claim 1 or 2, which is characterized in that the photoinitiator choosing
From at least one of 1- hydroxycyclohexyl phenyl ketone, photoinitiator 1713, photoinitiator MBF and photoinitiator TPO；
Preferably, the levelling agent in levelling agent BYK333, levelling agent BYK-336 and levelling agent BYK-341 at least one
Kind.
8. the preparation method of Vehicular display device optics pressure sensitive adhesive according to claim 1-7, which is characterized in that
The following steps are included:
(a) by dendritic acrylic copolymer, single double bond acrylic ester monomer, crosslinking agent, photoinitiator and levelling agent
Mixing；
(b) glue application after the completion of mixing in step (a) Vehicular display device is obtained to use between two layers of release film, after solidification
Optics pressure sensitive adhesive.
9. the preparation method of Vehicular display device optics pressure sensitive adhesive according to claim 8, which is characterized in that the mixing
Temperature be 30-40 DEG C, more preferably 35-40 DEG C.
10. the preparation method of Vehicular display device optics pressure sensitive adhesive according to claim 8, which is characterized in that described solid
Change and uses ultraviolet light；
Preferably, the light intensity of the ultraviolet light is 20-180mw/cm2, more preferably 20-100mw/cm2；
Preferably, the energy of the ultraviolet light is 1000-1600mj/cm2, more preferably 1200-1500mj/cm2。
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| CN201910074841.XA CN109796902A (en) | 2019-01-25 | 2019-01-25 | A kind of Vehicular display device optics pressure sensitive adhesive and preparation method thereof |
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| CN201910074841.XA CN109796902A (en) | 2019-01-25 | 2019-01-25 | A kind of Vehicular display device optics pressure sensitive adhesive and preparation method thereof |
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| WO2005060444A2 (en) * | 2003-12-03 | 2005-07-07 | Virginia Tech Intellectual Properties, Inc. | Hyperbranched segmented copolymers and methods of making same |
| CN1919893A (en) * | 2005-08-26 | 2007-02-28 | 中国科学院成都有机化学有限公司 | Hyperbranched great macromonomer, acrylate resin containing hyperbranched structure and preparation method |
| CN105176419A (en) * | 2010-12-10 | 2015-12-23 | 日立化成株式会社 | Optical Adhesive Resin Composition, Optical Adhesive Sheet Using Same, And Image Display Device |
| CN108329851A (en) * | 2018-02-05 | 2018-07-27 | 苏州凡赛特材料科技有限公司 | A kind of high ink fillibility is bonded OCA and preparation method thereof entirely |
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2019
- 2019-01-25 CN CN201910074841.XA patent/CN109796902A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005060444A2 (en) * | 2003-12-03 | 2005-07-07 | Virginia Tech Intellectual Properties, Inc. | Hyperbranched segmented copolymers and methods of making same |
| CN1919893A (en) * | 2005-08-26 | 2007-02-28 | 中国科学院成都有机化学有限公司 | Hyperbranched great macromonomer, acrylate resin containing hyperbranched structure and preparation method |
| CN105176419A (en) * | 2010-12-10 | 2015-12-23 | 日立化成株式会社 | Optical Adhesive Resin Composition, Optical Adhesive Sheet Using Same, And Image Display Device |
| CN108329851A (en) * | 2018-02-05 | 2018-07-27 | 苏州凡赛特材料科技有限公司 | A kind of high ink fillibility is bonded OCA and preparation method thereof entirely |
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