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CN105111998B - Ultraviolet light curing adhesive - Google Patents

Ultraviolet light curing adhesive Download PDF

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CN105111998B
CN105111998B CN201510599894.5A CN201510599894A CN105111998B CN 105111998 B CN105111998 B CN 105111998B CN 201510599894 A CN201510599894 A CN 201510599894A CN 105111998 B CN105111998 B CN 105111998B
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acrylate
adhesive
urethane acrylate
ultraviolet light
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CN105111998A (en
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尹万安
丁清华
陈明源
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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Zhangjiagang Kangdexin Optronics Material Co Ltd
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Abstract

The invention provides a kind of ultraviolet light curing adhesive.The ultraviolet light curing adhesive, in parts by weight, including 5~20 parts of polyester acrylate oligomers, 15~35 parts of urethane acrylate, 5~20 parts of epoxy acrylate, 50~120 parts of reactive diluent and 1~3 part of light trigger.Simultaneously comprising three kinds of polyester acrylate oligomers, urethane acrylate and epoxy acrylate unsaturated oligomers in above-mentioned adhesive, this can be effectively improved the adhesion strength and weatherability of adhesive, adhesive is had preferable combination property.The dosage of each component is limited simultaneously and is advantageous to obtain the ultraviolet light curing adhesive for having high bonding strength, good weatherability properties and good coating waste water performance concurrently within the above range.

Description

Ultraviolet light curing adhesive
Technical field
The present invention relates to Photocurable adhesive field, in particular to a kind of ultraviolet light curing adhesive.
Background technology
Ultraviolet light curing adhesive be it is a kind of have solidify rapid, green, bonding force is strong, solidification when without fuel factor and The adhesive of the features such as wide adaptation range.Its principle is using light trigger under ultraviolet light, triggers unsaturated organic list Body the chemical reaction such as is polymerize, is grafted, is crosslinked and reaching a kind of adhesive solidified rapidly.Due to hardening time is short, energy The features such as utilization rate is high, solidification temperature is low, free from environmental pollution is measured, so it receives the extensive concern of people once appearance.
Publication No. CN102898980 patent application provides a kind of ultraviolet curing acrylic ester adhesive, its by Methyl methacrylate, butyl acrylate, vinylacetate and toluene etc. are made.The adhesive has curing rate fast, viscous The advantages that intensity is high and shock resistance is good is connect, is widely used to the bonding of the multiple materials such as metal, glass, crystal and stone material, With preferable economic results in society.But for the adhesive there is also many weak points, such as using toluene as solvent, there is ring in it The problems such as high, impact resistance difference and light are polluted in border, heat endurance is relatively low.
Grant number provides a kind of Liquid optical clear adhesive for liquid crystal display touch screen for CN102732183 Chinese patent, its It is made by liquid synthetic rubber, terpene resin, latent curing agent, light trigger with antioxidant etc..The transparent adhesive tape has printing opacity The advantages that property is good, ductility is good and yellowing resistance is excellent.But there is also to the inorganic ground such as a variety of organic substrates and glass The problem of adhesive strength deficiency.
Grant number provides a kind of ultraviolet light curing adhesive for CN101701143 Chinese patent, its by polyester-type and Urethane diacrylate oligomer, isobornyl acrylate isoreactivity free radical monomer, 1- hydroxycyclohexyl phenylketones and silicon Alkane coupling agent etc. is made.The adhesive is applied to a variety of organic substrates, glass and metal etc., and moderate strength bonding can be achieved. But the weatherability of material is not referred to, it is not suitable for outdoor application.
In a word, there is the defects of adhesion strength and weatherability can not get both in existing ultraviolet light curing adhesive.On in view of State the presence of problem, it is necessary to prepare and a kind of have high bond strength and the ultraviolet curing adhesive of good weatherability properties concurrently.
The content of the invention
It is a primary object of the present invention to provide a kind of ultraviolet light curing adhesive, to solve UV-curing in the prior art Change the problem of adhesive high bond strength and good weatherability properties can not get both.
To achieve these goals, one aspect of the invention provides a kind of ultraviolet light curing adhesive, in parts by weight, The adhesive includes 5~20 parts of polyester acrylate oligomers, 15~35 parts of urethane acrylate, 5~20 parts of ring Oxypropylene acid esters, 50~120 parts of reactive diluent and 1~3 part of light trigger.
Further, in parts by weight, adhesive include 8~12 parts polyester acrylate oligomers, 20~30 parts Urethane acrylate, 8~15 parts of epoxy acrylate, 50~70 parts of reactive diluent and 1.5~3 parts it is light-initiated Agent.
Further, the weight of reactive diluent and polyester acrylate oligomers, urethane acrylate and epoxy third The ratio of three kinds of acrylate gross weights of olefin(e) acid ester is 4:6~6:4.
Further, reactive diluent is monofunctional compound;Polyester acrylate oligomers include 1~2 function Base;Urethane acrylate includes 1~3 functional group;And epoxy acrylate includes 1~3 functional group.
Further, reactive diluent includes isobornyl acrylate, ethoxyethoxyethyl acrylate, tetrahydrochysene furan Mutter acrylate and 4- hy-droxybutyls.
Further, in parts by weight, reactive diluent includes 5~20 parts of isobornyl acrylate, 5~25 parts of second Epoxide ethoxyethyl acrylate, 20~40 parts of tetrahydrofuran acrylate and 20~30 parts of 4- acrylic acid hydroxyl fourths Ester.
Further, urethane acrylate is aliphatic urethane acrylate, preferably single functionality aliphatic poly Urethane acrylate and/or bifunctionality aliphatic urethane acrylate.
Further, in parts by weight, adhesive is also steady including 0.1~5 part of UV absorbers, 0.1~5 part of light Determine agent and 0.2~1 part of antioxidant.
Further, in parts by weight, adhesive is also steady including 0.2~1 part of UV absorbers, 0.5~2 part of light Determine agent and 0.5~1 part of antioxidant.
Further, light trigger is selected from 1- hydroxycyclohexyl phenyl ketones, 2,4,6 (trimethylbenzoyl) diphenyl Phosphine oxide, 2- hydroxy-2-methyl -1- phenyl -1- acetone and 1,1- (- 4,1- the phenylenes of methylene-two) double [2- hydroxyl -2- first Base -1- propane ketone] composition group in one or more;
UV absorbers are selected from hydroxyl phenol and triazine, the tert-amyl phenols of 2- (2H- BTA -2- bases) -4,6- two With 6- methylheptyls 2- { 4- [4,6- bis- (4- xenyls) -1,3,5- triazine -2- bases] -3- hydroxyphenoxies } propionic ester composition One or more in group;
Light stabilizer is selected from decanedioic acid methyl isophthalic acid, 2,2,6,6- pentamethyl -4- piperidine esters, two [2,2,6,6- tetramethyls -1- (octyl group epoxide) -4- piperidyls] sebacate and it is poly- [6- [(1,1,3,3- tetramethyl butyls) amino]] -1,3,5- triazine -2, 4- [(2,2,6,6,-tetramethyl-4-piperidyl) imino group] -1,6- oneself two support [(2,2,6,6- tetramethyl -4- piperidyls) imido Base] } composition group in one or more;
Antioxidant is selected from hydroquinone dibenzyl ether, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecanol fat With the one or more in the group of four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters composition.
The invention provides a kind of ultraviolet light curing adhesive.Apply the technical scheme of the present invention, it is provided by the invention on State in adhesive while include polyester acrylate oligomers, three kinds of unsaturations of urethane acrylate and epoxy acrylate Oligomer.The viscosity of polyester acrylate oligomers is low, and preferable with the compatibility of other components so that adhesive has relatively low Viscosity.Epocryl hydroxyl, ether, ester group isopolarity group, this design feature enable epoxy resin Enough and adherend produces powerful interaction force, and it has higher photocuring activity, and this is advantageous to improve UV-curing Change the bonding strength and polymerization of adhesive;Urethane acrylate has preferable pliability, especially low-temperature flexibility, And its own also has good wearability, ageing resistance and high-tear strength, thus the addition of urethane acrylate is favourable In combination properties such as the toughness, wearability, ageing resistance for improving ultraviolet curing adhesive.Above-mentioned three kinds of unsaturated oligomers are simultaneously Use, the adhesion strength and weatherability of adhesive can be effectively improved, make adhesive that there is preferable combination property.In addition, will The dosage of each component limits within the above range, be advantageous to obtain have concurrently high bonding strength, good weatherability properties and good coating plus The ultraviolet light curing adhesive of work performance.
Embodiment
It should be noted that in the case where not conflicting, the feature in embodiment and embodiment in the application can phase Mutually combination.The present invention is described in detail with reference to embodiment.
As described by background technology, the existing adhesion strength that binding agent be present is asked with what weatherability can not get both Topic.In order to solve this problem, the invention provides a kind of ultraviolet light curing adhesive, and in parts by weight, the adhesive includes 5 ~20 parts of polyester acrylate oligomers, 15~35 parts of urethane acrylate, 5~20 parts of epoxy acrylate, 50 ~120 parts of reactive diluent and 1~3 part of light trigger.
In above-mentioned adhesive provided by the invention simultaneously include polyester acrylate oligomers, urethane acrylate and Three kinds of unsaturated oligomers of epoxy acrylate.The viscosity of polyester acrylate oligomers is low, and with the compatibility of other components Preferably so that adhesive has relatively low viscosity.Epocryl hydroxyl, ether, ester group isopolarity group, this Design feature enables epoxy resin to produce powerful interaction force with adherend, and there is higher photocuring to live for it Property, this is advantageous to the bonding strength and polymerization that improve ultraviolet light curing adhesive;Urethane acrylate has preferable Pliability, especially low-temperature flexibility, and its own also has good wearability, ageing resistance and high-tear strength, thus Being added with for urethane acrylate is beneficial to improve the combination properties such as the toughness, wearability, ageing resistance of ultraviolet curing adhesive. Above-mentioned three kinds of unsaturated oligomers use simultaneously, can be effectively improved the adhesion strength and weatherability of adhesive, have adhesive There is preferable combination property.In addition, the dosage of each component is limited within the above range, be advantageous to obtain that to have high bonding concurrently strong The ultraviolet light curing adhesive of degree, good weatherability properties and good coating waste water performance.
Ultraviolet light curing adhesive is as long as there is said components, you can has higher bonding strength and well weather-proof concurrently Property.In a preferred embodiment, in parts by weight, the adhesive include 8~12 parts polyester acrylate oligomers, 20~30 parts of urethane acrylate, 8~15 parts of epoxy acrylate, 50~70 parts of reactive diluent and 1.5~3 The light trigger of part.By the control of the ratios of said components within the above range, be advantageous to further to balance bonding strength, weather-proof The performance of each side such as property, wearability, to obtain the more excellent ultraviolet light curing adhesive of performance.
In a preferred embodiment, the adhesive include polyester acrylate oligomers, urethane acrylate, Epoxy acrylate, reactive diluent and light trigger;Wherein the weight of reactive diluent and polyester acrylate oligomers, The ratio of three kinds of acrylate gross weights of urethane acrylate and epoxy acrylate is 4:6~6:4.By reactive diluent with gathering The weight ratio of three kinds of acrylate sums of ester acrylate oligomer, urethane acrylate and epoxy acrylate is limited to Be advantageous to further improve bonding strength, good weatherability properties and the good coating waste water of ultraviolet light curing adhesive in above range Performance etc. combination property.
In a preferred embodiment, reactive diluent is monofunctional compound;Polyester acrylate oligomers Include 1~2 functional group;Urethane acrylate includes 1~3 functional group;And epoxy acrylate includes 1~3 official Can base.The functional group contained of above-mentioned each component is controlled within the above range respectively, is advantageous to that ultra-violet curing bonding will be prepared The polymerization speed of agent is controlled in the range of more suitably.Matched somebody with somebody simultaneously by appropriate functional group and compare ultraviolet light curing adhesive most Selection is adjusted in the network structure of whole solidification polymer, and it is comprehensive to make it have more preferable bonding strength, toughness, weatherability etc. Performance.
It is public that the epoxy acrylate of single functionality includes the 620-100 of Changxing company, 6209 and RAHN of Changxing company The 4188 of department;The epoxy acrylate of bifunctionality includes CN104NS and the MIWON public affairs of the 6210G of Changxing company, Sartomer The MIRAMER230 of department;MIRAMER ERP400 of the epoxy acrylate of three-functionality-degree including MIWON companies, Changxing company The GU1700P of 6261 and Guo Jing chemical companies.
The CN3108NS models of single functionality polyester acrylate oligomers including Sartomer, Changxing company 6314C-55 models and the D100 of ALLEX companies;The polyester acrylate oligomers of bifunctionality include Guo Jing chemical companies The PS420 of GU8703D, MIWON company and the CN704 of Sartomer.
In above-mentioned ultraviolet light curing adhesive, reactive diluent can select reactive diluent commonly used in the art, as long as The viscosity of adhesive can be adjusted for it.In a preferred embodiment, above-mentioned reactive diluent include but It is not limited to isobornyl acrylate, ethoxyethoxyethyl acrylate, tetrahydrofuran acrylate and 4- acrylic acid hydroxyls One or more in the group of butyl ester composition.Above-mentioned several reactive diluents are except that can reduce the viscous of ultraviolet light curing adhesive It is outside one's consideration, there is good compatibility also between other several unsaturated oligomers, can further improves the synthesis of adhesive Performance.Meanwhile itself as photo-curing monomer, also also have preferably tough with good photocuring activity, cured product Property, it can further improve the toughness of adhesive.
According to the above-mentioned teaching of the present invention, those skilled in the art can select its different activities of specific reactive diluent Proportionate relationship between diluent.In a preferred embodiment, in parts by weight, reactive diluent includes 5~20 parts Isobornyl acrylate, 5~25 parts of ethoxyethoxyethyl acrylate, 20~40 parts of tetrahydrofuran acrylate And 20~30 parts of 4- hy-droxybutyls.The proportionate relationship of each component in above-mentioned reactive diluent is controlled in above range It is interior, be advantageous to further improve reactive diluent in the comprehensive of viscosity, penetration and the toughness of regulation adhesive etc. Energy.
In above-mentioned ultraviolet light curing adhesive, those skilled in the art can select the type of urethane acrylate. In a kind of preferred embodiment, urethane acrylate includes but is not limited to aliphatic urethane acrylate.Aliphatic poly Urethane acrylate has good anti-yellowing property, adds the color inhibition that the component is advantageous to improve ultraviolet light curing adhesive Performance.Preferably, it is single functionality aliphatic urethane acrylate and/or bifunctionality aliphatic urethane acrylate. The aliphatic urethane acrylate of above-mentioned degree of functionality is selected, is advantageous to improve the anti-yellowing property of ultraviolet light curing adhesive, Ensure that it has good reactivity simultaneously.Specifically, single functionality aliphatic urethane acrylate includes but is not limited to Double bond chemical industry 5404 and/or RAHN 4188, bifunctionality aliphatic urethane acrylate include but is not limited to state and refined GU3030Z and/or ALLEX EB8413.During practical application, two kinds in above-mentioned aliphatic urethane acrylate can be selected Or two or more uses.
In above-mentioned ultraviolet light curing adhesive, those skilled in the art can select to add the type of auxiliary agent.A kind of excellent In the embodiment of choosing, in parts by weight, adhesive is also stable including 0.1~5 part of UV absorbers, 0.1~5 part of light Agent and 0.2~1 part of antioxidant.The UV absorbers, light stabilizer and antioxidant for adding aforementioned proportion are favourable In the uv-resistance, heat-resisting xanthochromia and the fast light xanthochromia that improve ultraviolet light curing adhesive.
In a preferred embodiment, in parts by weight, described adhesive is also inhaled including 0.2~1 part of ultraviolet light Receive agent, 0.5~2 part of light stabilizer and 0.5~1 part of antioxidant.UV absorbers, the light for adding aforementioned proportion are steady Determine agent and antioxidant is advantageous to further improve uv-resistance, heat-resisting xanthochromia and the fast light xanthochromia of ultraviolet light curing adhesive Property.
In above-mentioned ultraviolet light curing adhesive, those skilled in the art can select light trigger, UV absorbers, light The type of stabilizer and antioxidant.In a preferred embodiment, light trigger includes but is not limited to 1- hydroxyl rings Hexyl phenyl ketone, 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxides, 2- hydroxy-2-methyl -1- phenyl -1- acetone and One or more in the group of the 1,1- (- 4,1- phenylenes of methylene-two) double [2- hydroxy-2-methyl -1- propane ketone] compositions;It is purple Outer light absorber include but is not limited to hydroxyl phenol and triazine, the tert-amyl phenols of 2- (2H- BTA -2- bases) -4,6- two and The group of 6- methylheptyls 2- { 4- [4,6- bis- (4- xenyls) -1,3,5- triazine -2- bases] -3- hydroxyphenoxies } propionic ester composition In one or more;Light stabilizer includes but is not limited to decanedioic acid methyl isophthalic acid, 2,2,6,6- pentamethyl -4- piperidine esters, two [2, 2,6,6- tetramethyls -1- (octyl group epoxide) -4- piperidyls] sebacate and poly- { [6- [(1,1,3,3- tetramethyl butyls) ammonia Base]] -1,3,5- triazines -2,4- [(2,2,6,6,-tetramethyl-4-piperidyl) imino group] -1,6- oneself two support [(2,2,6,6- tetramethyls Base -4- piperidyls) imino group] composition group in one or more;Antioxidant includes but is not limited to hydroquinones dibenzyl Ether, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecanol fat and four [β-(3,5- di-tert-butyl-hydroxy phenyls) Propionic acid] pentaerythritol ester composition group in one or more.Above-mentioned substance is selected to be advantageous to solidification is anti-as light trigger The reaction rate answered is controlled in suitable scope;Above-mentioned substance is selected as UV absorbers, light stabilizer and antioxygen Agent, it is comprehensive to be advantageous to further uv-resistance energy, heat-resisting xanthochromia and fast light xanthochromia of raising ultraviolet light curing adhesive etc. Performance is closed, so as to improve its weatherability.
The present invention is further illustrated with reference to embodiment.
The raw material and manufacturer used in embodiment 1 to 14 and comparative example 1 is shown in Table 1.
Table 1
The preparation technology of ultraviolet curing adhesive is as follows in the embodiment of the present invention 1 to 14 and comparative example 1:
At normal temperatures and pressures, by reactive diluent, polyester acrylate oligomers, urethane acrylate, propylene oxide Acid esters is mixed to get the first question response thing;Question response thing and light trigger are mixed to get the second question response thing, second treated anti- Answer thing to be heated to 50 DEG C, stir simultaneously, transparency liquid is completely dissolved into light trigger;It is optional by being added in the second question response thing UV absorbers, optional light stabilizer, optional antioxidant, stir 0.5h, static 2h, sampling Detection is qualified, mistake Required ultraviolet light curing adhesive is made in filter.In manufacturing process, moistureproof lucifuge should be noted.
The component of obtained ultraviolet light curing adhesive is shown in Table 2 and table 3 respectively in embodiment 1 to 14 and comparative example 1.
Table 2
Table 3
The property of obtained ultraviolet light curing adhesive is shown in Table 4 and table 5 respectively in embodiment 1 to 14 and comparative example 1.
Viscosity:By BROOKFIELD DV2T type viscosimeters, at 25 DEG C, the viscosity of above-mentioned ultra-violet curing agent is carried out Test.
Light transmittance:By HUNTER LAB COLORQUESTXE type sub-ray spectrometers, using projective techniques, to above-mentioned purple The light transmittance of coated sand intensifier is tested.
Refractive index:By ATAGO NAR-1T type Abbe refractometers, the refractive index of above-mentioned ultra-violet curing agent is tested.
Colourity APHA:By MN VISOCOLOR type visual colorimetric determination instrument, the colourity APHA of above-mentioned ultra-violet curing agent is carried out Test.
Water content:By PRECISA XM60 type karl Fischer moisture meters, the water content of above-mentioned ultra-violet curing agent is carried out Test.
Outward appearance:Observe by the naked eye.
Table 4
Table 5
By the following method to the adhesive property of obtained ultraviolet light curing adhesive in embodiment 1 to 14 and comparative example 1 Tested:
Obtained adhesive in embodiment 1 to 14 and comparative example 1 is fitted on plastic basis material, coating 24um thickness glues Mixture, the test film is reciprocally attached to the polyethylene terephthalate as clung body respectively using 2kg roller × 2 time (PET), polyvinyl chloride (PVC), makrolon (PC), polystyrene (PS), polymethyl methacrylate (PMMA), on glass. It is cut into that 25mm is wide, using the material of gained as test film, 180 is determined under 23 DEG C, 50%RH atmosphere after attaching 1 hour Spend peel strength.Test result is shown in Table 6 and table 7 respectively.
Table 6
Table 7
The weatherability of obtained ultraviolet light curing adhesive in embodiment 1 to 14 and comparative example 1 is entered by the following method Row test:
The assay method of initial yellowing degree (b*):Using ColorQUEST XE type visible spectrometers, according to JIS K7105 determines the initial yellowing degree (b*) of ultraviolet light curing adhesive.
Fast light xanthochromia degree (b* (UV)) assay method:Ultraviolet light curing adhesive is passed through into ultraviolet light in QUV testers After irradiating 250h and 500h, using ColorQUEST XE type visible spectrometers, initial stage is determined according to JIS K7105 Xanthochromia degree (b* (UV)).
Heat-resisting xanthochromia degree (b* (heat) assay method:Obtained ultraviolet light curing adhesive is under 85 DEG C × 85%RH atmosphere Place 250 hours and 500 hours, using ColorQUEST XE type visible spectrometers, determined according to JIS K7105 Initial yellowing degree (b* (heat).
Water boiling resistance assay method:By the boiling under the conditions of boiling water (100 DEG C) of obtained ultraviolet light curing adhesive, pass through Different time tests bonding force situation.
The method of testing of bonding force is as described above.Test result is shown in Table 8 and table 9.
Table 8
Table 9
As can be seen from the above description, adhesive provided by the invention has preferable bonding strength, while also has There is preferable weather resisteant.
In above-mentioned adhesive provided by the invention simultaneously include polyester acrylate oligomers, urethane acrylate and Three kinds of unsaturated oligomers of epoxy acrylate.The viscosity of polyester acrylate oligomers is low, and with the compatibility of other components Preferably so that adhesive has relatively low viscosity.Epocryl hydroxyl, ether, ester group isopolarity group, this Design feature enables epoxy resin to produce powerful interaction force with adherend, and there is higher photocuring to live for it Property, this is advantageous to the bonding strength and polymerization that improve ultraviolet light curing adhesive;Urethane acrylate has preferable Pliability, especially low-temperature flexibility, and its own also has good wearability, ageing resistance and high-tear strength, thus Being added with for urethane acrylate is beneficial to improve the combination properties such as the toughness, wearability, ageing resistance of ultraviolet curing adhesive. Above-mentioned three kinds of unsaturated oligomers use simultaneously, can be effectively improved the adhesion strength and weatherability of adhesive, have adhesive There is preferable combination property.In addition, the dosage of each component is limited within the above range, be advantageous to obtain that to have high bonding concurrently strong The ultraviolet light curing adhesive of degree, good weatherability properties and good coating waste water performance.
The preferred embodiments of the present invention are the foregoing is only, are not intended to limit the invention, for the skill of this area For art personnel, the present invention can have various modifications and variations.Within the spirit and principles of the invention, that is made any repaiies Change, equivalent substitution, improvement etc., should be included in the scope of the protection.

Claims (10)

1. a kind of ultraviolet light curing adhesive, it is characterised in that in parts by weight, described adhesive includes 5~20 parts of polyester Acrylate oligomer, 15~35 parts of urethane acrylate, 5~20 parts of epoxy acrylate, 50~120 parts of activity Diluent and 1~3 part of light trigger;The reactive diluent is monofunctional compound;The polyester acrylate is low Polymers includes 1~2 functional group;The urethane acrylate includes 1~3 functional group;And the epoxy acrylate Include 1~3 functional group.
2. adhesive according to claim 1, it is characterised in that in parts by weight, described adhesive, including 8~12 parts The polyester acrylate oligomers, 20~30 parts of the urethane acrylate, 8~15 parts of the epoxy acrylic Ester, 50~70 parts of the reactive diluent and 1.5~3 parts of the light trigger.
3. adhesive according to claim 2, it is characterised in that the weight of the reactive diluent and the polyester Acid esters oligomer, the ratio of three kinds of acrylate gross weights of the urethane acrylate and the epoxy acrylate are 4:6~ 6:4。
4. adhesive according to claim 1, it is characterised in that the reactive diluent include isobornyl acrylate, Ethoxyethoxyethyl acrylate, tetrahydrofuran acrylate and 4- hy-droxybutyls.
5. adhesive according to claim 4, it is characterised in that in parts by weight, the reactive diluent includes 5~20 Part the isobornyl acrylate, 5~25 parts of the ethoxyethoxyethyl acrylate, described the four of 20~40 parts Hydrogen furanacrylate and 20~30 parts of the 4- hy-droxybutyls.
6. adhesive according to claim 1, it is characterised in that the urethane acrylate is aliphatic polyurethane third Olefin(e) acid ester.
7. adhesive according to claim 6, it is characterised in that the aliphatic urethane acrylate is single functionality Aliphatic urethane acrylate and/or bifunctionality aliphatic urethane acrylate.
8. the adhesive according to any one of claim 2 to 5, it is characterised in that in parts by weight, described adhesive is also UV absorbers including 0.1~5 part, 0.1~5 part of light stabilizer and 0.2~1 part of antioxidant.
9. according to the adhesive described in claim 8, it is characterised in that in parts by weight, described adhesive also include 0.2~ 1 part of the UV absorbers, 0.5~2 part of the light stabilizer and 0.5~1 part of the antioxidant.
10. according to the adhesive described in claim 8, it is characterised in that the light trigger is selected from 1- hydroxy-cyclohexyl benzene Base ketone, 2,4,6 (trimethylbenzoyl) diphenyl phosphine oxides, 2- hydroxy-2-methyl -1- phenyl -1- acetone and 1,1- are (sub- - 4,1- the phenylenes of methyl-two) double [2- hydroxy-2-methyl -1- propane ketone] composition group in one or more;
The UV absorbers are selected from hydroxyl phenol and triazine, the tert-amyl phenols of 2- (2H- BTA -2- bases) -4,6- two With 6- methylheptyls 2- { 4- [4,6- bis- (4- xenyls) -1,3,5- triazine -2- bases] -3- hydroxyphenoxies } propionic ester composition One or more in group;
The light stabilizer is selected from decanedioic acid methyl isophthalic acid, 2,2,6,6- pentamethyl -4- piperidine esters, two [2,2,6,6- tetramethyls -1- (octyl group epoxide) -4- piperidyls] sebacate and it is poly- [6- [(1,1,3,3- tetramethyl butyls) amino]] -1,3,5- triazine -2, 4- [(2,2,6,6,-tetramethyl-4-piperidyl) imino group] -1,6- oneself two support [(2,2,6,6- tetramethyl -4- piperidyls) imido Base] } composition group in one or more;
The antioxidant is selected from hydroquinone dibenzyl ether, β-(3,5- di-tert-butyl-hydroxy phenyl) propionic acid octadecanol fat With the one or more in the group of four [β-(3,5- di-tert-butyl-hydroxy phenyls) propionic acid] pentaerythritol esters composition.
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