CN103224770A - Adhesive for solar cell backboard and preparation method thereof - Google Patents
Adhesive for solar cell backboard and preparation method thereof Download PDFInfo
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- CN103224770A CN103224770A CN2013101020347A CN201310102034A CN103224770A CN 103224770 A CN103224770 A CN 103224770A CN 2013101020347 A CN2013101020347 A CN 2013101020347A CN 201310102034 A CN201310102034 A CN 201310102034A CN 103224770 A CN103224770 A CN 103224770A
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Abstract
The invention discloses adhesive for a solar cell backboard and a preparation method of the adhesive for the solar cell backboard. The adhesive for the solar cell backboard is characterized by comprising the following components, by weight, 100 parts of polyurethane prepolymers, 100-110 parts of solvent, 5-10 parts of curing agents and 0.05-0.5 part of uvioresistant agents. The components are mixed to obtain the adhesive, wherein the polyurethane prepolymers are formed by polymerization of 60-95 parts by weight of polyester glycol, 5-30 parts by weight of fluorine-containing polyether glycol and 5-12 parts by weight of diisocyanate chemical compounds at a certain temperature. The prepared adhesive is high in bonding strength on the solar back board with a PVDF film and good in ultraviolet light aging resisting performance and hydrolysising resisting property. After the adhesive is compounded and laminated, and under the relative humidity condition, an aging test on the adhesive is conducted for 3000 hours at the temperature of 85 DEG C and an accelerated aging test is conducted on the adhesive, the peel strength of the adhesive can still satisfy relevant requirements of solar back board industries.
Description
Technical field
The present invention relates to area of solar cell, particularly a kind of suitable solar cell backboard polyurethane adhesive and preparation method thereof.
Background technology
Along with Nonrenewable resources gradually reduce and the mineral substance resource is produced, the various pollution problems that produce in using, each state is all in the development and use that progressively strengthen the renewable energy resources and clean energy.In these new forms of energy, sun power is one of most important energy wherein.What solar facilities was commonly used at present is solar panel, and it is to be a visual plant of electric energy with conversion of solar energy.This type of service life of the products will guarantee that generally according to designing more than 25 years product reaches the time limit of service of length like this, and the back veneer material that requires to constitute the solar cell module has certain mechanical strength, electric insulating quality, weathering resistance, moistureproofness and thermotolerance etc.Yet single plastic film is difficult to possess these functions simultaneously, several different plastic films need be combined with each other.The sun power backboard is generally 3-tier architecture, both sides are for containing fluorine film such as fluorinated ethylene propylene (PVF) film or polyvinylidene difluoride (PVDF) (PVDF) film, the centre is polyethylene terephthalate (PET) film, PVF or PVDF film surface free energy are very low, very difficult sticking, with the compound difficulty of PET film, need these several tunics are bonding and laminated together with special caking agent.Because the solar cell module will be in outdoor application decades, therefore the caking agent that is used for solar cell backboard requires to stand two 85 tests of 1000-3000h, to having relatively high expectations of caking agent self, domestic sun power backboard manufacturer to adopt from the caking agent of Europe or Japanese import, and price is very expensive.China does not also have the sophisticated caking agent that can reach related request at present.
Suggestion is used with polyester to two liquid response type polyurethane resins of main body as caking agent among Japanese Patent JP2008-130647H and the JP2008-140866.But hydrolysis, xanthochromia in use take place and produce splitting in this kind polyurethane adhesive easily, thereby are unable to bear the life-time service more than 20 years.Therefore, need exploitation badly and a kind ofly can be used for solar cell backboard, can satisfy the caking agent of present solar battery product requirement.
Summary of the invention
The present invention has overcome the defective of prior art, and the good sun power backboard of a kind of hydrolysis and ultraviolet resistance irradiation performance caking agent and preparation method thereof is provided.
In order to solve the problems of the technologies described above, the present invention is achieved by the following technical solutions: a kind of solar cell backboard caking agent, composed of the following components by weight:
100 parts of polyurethane prepolymers
Solvent 100-110 part
Solidifying agent 5-10 part
Anti ultraviolet agent 0.05-0.5 part
Further:
By weight, described polyurethane prepolymer consists of:
Polyester diol 60-95 part
Fluorochemical polyether dibasic alcohol 5-30 part
Diisocyanate cpd 5-12 part
Described solvent is preferably a kind of in ethyl acetate, butylacetate, acetone, the butanone.
Described solidifying agent is preferably a kind of in hexamethylene diisocyanate, tolylene diisocyanate and the diphenylmethanediisocyanate tripolymer.
Described anti ultraviolet agent is preferably 2-(2 '-hydroxyl-3 ', 5 '-two uncle's phenyl)-5-chlorination benzotriazole or Octabenzone.
Described polyester diol is preferably the polycondensate of the polycondensate of phthalic acid and ethylene glycol, butyleneglycol or hexanodioic acid and ethylene glycol, butyleneglycol.
Described diisocyanate cpd is preferably a kind of in tolylene diisocyanate, diphenylmethanediisocyanate and the hexamethylene diisocyanate.
At solar cell backboard caking agent of the present invention, preferably composed of the following components by weight: 100 parts of polyurethane prepolymers, 105 parts of ethyl acetate, 8 parts of hexamethylene diisocyanate trimers, 2-(2 '-hydroxyl-3 ', 5 '-two uncle's phenyl)-0.3 part of 5-chlorination benzotriazole.
The present invention also provides the preparation method of above-mentioned solar cell backboard with caking agent, may further comprise the steps:
(1) by prescription polyester diol, fluorochemical polyether dibasic alcohol are put in the reactor, be warming up to 70~110 ℃, drop into diisocyanate cpd, insulation reaction 5~6 hours is cooled to 60~70 ℃, obtains polyurethane prepolymer;
(2) by prescription, with polyurethane prepolymer and solvent and stir, be cooled to 20~30 ℃, adding solidifying agent and anti ultraviolet agent stir, and promptly obtain sun power backboard polyurethane adhesive.
Solvent among the present invention can be selected one or more the combination in ethyl acetate, butylacetate, acetone, the butanone for use, is preferably ethyl acetate; The weight part of solvent is 100-110 part.
Solidifying agent among the present invention can be selected a kind of in hexamethylene diisocyanate (HDI), tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI) tripolymer for use, is preferably the HDI tripolymer; The weight part of solidifying agent is 5-10 part.
Anti ultraviolet agent among the present invention can be selected one or more the combination in benzophenone class, benzotriazole category, the compound in triazine class for use, be preferably a kind of in the azimidobenzene compounds, 2-(2 '-hydroxyl-3 ' more preferably, 5 '-two uncle's phenyl)-5-chlorination benzotriazole (UV-327) or Octabenzone (UV-531); The weight part of anti ultraviolet agent is 0.05-0.5 part.
Polyester diol among the present invention can select for use in phthalic acid, m-phthalic acid, the hexanodioic acid one or more combination and the polycondensate of one or more combinations in the ethylene glycol, propylene glycol, butyleneglycol, hexylene glycol, hydroxyl value is 20-150, is preferably 50-120; Be preferably the polycondensate of the polycondensate of phthalic acid and ethylene glycol, butyleneglycol or hexanodioic acid and ethylene glycol, butyleneglycol.
Fluorochemical polyether dibasic alcohol among the present invention is that the fluorine of PTMG or polypropylene glycol is polymer-modified, adopting method among the patent CN1861662 to carry out free radical addition by one or more the combination side group of trifluoro propene in PTMG and polypropylene glycol prepares, fluorochemical polyether dibasic alcohol hydroxyl value is 20-150, is preferably 25-120; Fluorine content is 10-33.5%, is preferably 15-30%; More preferably hydroxyl value 38, the fluorochemical polyether dibasic alcohol of fluorine content 25% or hydroxyl value 26, the fluorochemical polyether dibasic alcohol of fluorine content 29%.
Diisocyanate cpd among the present invention can be selected one or more the combination in tolylene diisocyanate (TDI), diphenylmethanediisocyanate (MDI), isophorone diisocyanate (IPDI), the hexamethylene diisocyanate (HDI) for use, is preferably a kind of among TDI, MDI and the HDI.
Compared with prior art, the present invention has the following advantages:
1, caking agent hydrolysis of the present invention and ultraviolet resistance irradiation performance are good, by introduce the side group fluoro-containing group in polyurethane adhesive, have improved the hydrolytic resistance and the ageing resistance of caking agent;
2, use this caking agent compound sun power backboard to have ageing-resistant preferably, anti-hydrolytic performance, stand two 85 test and 15KWh/m of 3000h
2Ultraviolet ageing is handled the back ply adhesion and is still remained on more than the 6.9N/cm, reaches as high as 8.5N/cm.
Embodiment
By the following examples the present invention is carried out more specific description, but the present invention is not limited to described embodiment.
The used product of the present invention all can commercially availablely be obtained or prepare, and part of compounds adopts following abbreviation and explains:
POL2000, POL1000: polyester diol (polycondensate of phthalic acid and ethylene glycol, butyleneglycol, hydroxyl value are 56), model is CF-656, moulds Dehua worker company limited available from Nan Jingkang.
POL1000: polyester diol (polycondensate of phthalic acid and ethylene glycol, butyleneglycol, hydroxyl value are 110), model is CF-6110, moulds Dehua worker company limited available from Nan Jingkang.
POL2000-2: polyester diol (polycondensate of hexanodioic acid and ethylene glycol, butyleneglycol, hydroxyl value are 56), model is POL2356, available from space field, Qingdao chemical industry company limited.
PTMG: PTMG (hydroxyl value 56), model PTMG2000 is available from BASF.
F-PTMG: the fluorochemical polyether dibasic alcohol, adopt the method preparation among the patent CN1861662, hydroxyl value 38, fluorine content 25%.
F-PPG: the fluorochemical polyether dibasic alcohol, adopt the method preparation among the patent CN1861662, hydroxyl value 26, fluorine content 29%, wherein PPG is available from Jiangsu "four news" (new ideas interfacial agents Science and Technology Ltd., model PPG2000.
TDI: tolylene diisocyanate, available from bigization of Cangzhou.
MDI: diphenylmethanediisocyanate, available from Yantai ten thousand China.
HDI: hexamethylene diisocyanate, available from Yantai ten thousand China.
The T-HDI:HDI tripolymer is available from the BASF(model: Basonat HI100).
UV-327:2-(2 '-hydroxyl-3 ', 5 '-two uncle's phenyl)-5-chlorination benzotriazole, available from Ciba company.
UV-531:2-hydroxyl-4-oxy-octyl benzophenone is available from Nantong Wei Hong chemical company.
Embodiment 1
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 100 ℃, drop into TDI, insulation reaction 5 hours is cooled to 70 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 30 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 2
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 110 ℃, drop into TDI, insulation reaction 5 hours is cooled to 60 ℃, obtains polyurethane prepolymer.Add butylacetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 30 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 3
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 100 ℃, drop into TDI, insulation reaction 5.5 hours is cooled to 65 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 20 ℃, drop into T-HDI and UV-531, stir, make sun power backboard polyurethane adhesive.
Embodiment 4
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 70 ℃, drop into TDI, insulation reaction 6 hours is cooled to 60 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 25 ℃, drop into T-HDI and UV-531, stir, make sun power backboard polyurethane adhesive.
Embodiment 5
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 80 ℃, drop into TDI, insulation reaction 6 hours is cooled to 60 ℃, obtains polyurethane prepolymer.Add acetone in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 28 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 6
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 110 ℃, drop into TDI, insulation reaction 5.5 hours is cooled to 65 ℃, obtains polyurethane prepolymer.Add butanone in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 24 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 7
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 100 ℃, drop into TDI, insulation reaction 5.5 hours is cooled to 62 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 20 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 8
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 100 ℃, drop into TDI, insulation reaction 5 hours is cooled to 68 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 30 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Embodiment 9
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, F-PTMG are put in the reactor, be warming up to 90 ℃, drop into MDI, insulation reaction 5 hours is cooled to 70 ℃, obtains polyurethane prepolymer.Add acetone in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 25 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Comparative example 1
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000, PTMG are put in the reactor, be warming up to 100 ℃, drop into TDI, insulation reaction 5 hours is cooled to 70 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 30 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Comparative example 2
The polyurethane prepolymer composition sees Table 1, and the caking agent composition sees Table 2.
The sun power backboard is as follows with the polyurethane adhesive preparation method:
POL2000 is put in the reactor, be warming up to 110 ℃, drop into TDI, insulation reaction 5 hours is cooled to 60 ℃, obtains polyurethane prepolymer.Add ethyl acetate in the polyurethane prepolymer that in aforesaid reaction vessel, obtains, stir, be cooled to 25 ℃, drop into T-HDI and UV-327, stir, make sun power backboard polyurethane adhesive.
Table 1 embodiment 1-9 and Comparative Examples 1-2 polyurethane prepolymer are formed
Table 2 embodiment 1-9 and Comparative Examples 1-2 caking agent are formed
Embodiment 10~20
Sun power backboard of the present invention is tested with adhesive performance:
The present invention estimates the performance of caking agent by the following method, use the caking agent of preparation the two sides all to be passed through the polyethylene terephthalate (PET of corona treatment, east #6021) film and polyvinylidene difluoride (PVDF) (PVDF, the #302 of A Kema company) film carry out compound, the performance of the test compound laminating material attenuation judgement caking agent of interlayer clinging power that is solar cell backboard under two 85 tests and ultraviolet accelerated weathering test.
The preparation method of solar cell backboard is specific as follows:
At first, the caking agent that configures is coated on the one side of PET film, 80 ℃ following dry 2 minutes.The thickness of dry back coating is 11 microns.Then, pvdf membrane is compound on the PET film that applies the caking agent one side, at 60 ℃, 5kg/cm
2Down heating of state, compacting after 1 minute, again with identical method at the PET of this compounding laminates film film opposite side surface recombination pvdf membrane.The composite bed press mold that obtains thus was the used for solar batteries backboard in 72 hours 40 ℃ of following crosslinking reactions.
Interlayer clinging power test: use Tianjin, island to make the AGS-J that is produced, implement to measure according to ASTM D1876.
Hot and humid experiment: use TH-225D that Dongguan Ai Si litchi detecting instrument company limited produces under 85 ℃, 85% moisture condition, to implement the processing of 1000h, 2000h, 3000h respectively, and implement according to IEC61215-10.13.
Ultraviolet accelerated deterioration experiment: the ZN-P that uses Jiangsu Ai Mosheng laboratory apparatus science company limited to produce, and implement uviolizing according to IEC61215-10.10 and handle.
Embodiment and Comparative Examples adhesive performance see Table 3.
Table 3 embodiment 1-9 and the tabulation of Comparative Examples 1-2 adhesive performance
Embodiment 10-20 shows, by in polyurethane adhesive, introducing the side group fluoro-containing group, improved the hydrolytic resistance of caking agent, ageing resistance, use this caking agent compound backboard to have ageing-resistant preferably, anti-hydrolytic performance, stand still to keep higher ply adhesion after two 85 of ultraviolet ageing processing and 3000h tests.
Claims (9)
1. solar cell backboard caking agent, composed of the following components by weight:
100 parts of polyurethane prepolymers
Solvent 100-110 part
Solidifying agent 5-10 part
Anti ultraviolet agent 0.05-0.5 part.
2. solar cell backboard caking agent according to claim 1 is characterized in that by weight, and described polyurethane prepolymer consists of:
Polyester diol 60-95 part
Fluorochemical polyether dibasic alcohol 5-30 part
Diisocyanate cpd 5-12 part.
3. solar cell backboard caking agent according to claim 1 is characterized in that described solvent is a kind of in ethyl acetate, butylacetate, acetone, the butanone.
4. solar cell backboard caking agent according to claim 1 is characterized in that described solidifying agent is a kind of in hexamethylene diisocyanate, tolylene diisocyanate and the diphenylmethanediisocyanate tripolymer.
5. solar cell backboard caking agent according to claim 1 is characterized in that described anti ultraviolet agent is 2-(2 '-hydroxyl-3 ', 5 '-two uncle's phenyl)-5-chlorination benzotriazole or Octabenzone.
6. solar cell backboard caking agent according to claim 2 is characterized in that described polyester diol is the polycondensate of the polycondensate of phthalic acid and ethylene glycol, butyleneglycol or hexanodioic acid and ethylene glycol, butyleneglycol.
7. solar cell backboard caking agent according to claim 2 is characterized in that described diisocyanate cpd is a kind of in tolylene diisocyanate, diphenylmethanediisocyanate and the hexamethylene diisocyanate.
8. solar cell backboard caking agent according to claim 1, it is characterized in that composed of the following components by weight: 100 parts of polyurethane prepolymers, 105 parts of ethyl acetate, 8 parts of hexamethylene diisocyanate trimers, 2-(2 '-hydroxyl-3 ', 5 '-two uncle's phenyl)-0.3 part of 5-chlorination benzotriazole.
9. the described solar cell backboard of claim 1 is characterized in that may further comprise the steps with the preparation method of caking agent:
(1) by prescription polyester diol, fluorochemical polyether dibasic alcohol are put in the reactor, be warming up to 70~110 ℃, drop into diisocyanate cpd, insulation reaction 5~6 hours is cooled to 60~70 ℃, obtains polyurethane prepolymer;
(2) by prescription, with polyurethane prepolymer and solvent and stir, be cooled to 20~30 ℃, adding solidifying agent and anti ultraviolet agent stir, and promptly obtain sun power backboard polyurethane adhesive.
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CN102977835A (en) * | 2012-11-22 | 2013-03-20 | 云南云天化股份有限公司 | Adhesive for solar back panel and preparation method thereof |
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CN106244081A (en) * | 2016-07-28 | 2016-12-21 | 上海乘鹰新材料有限公司 | Solar cell backboard Adhesive composition and preparation method thereof |
CN106244079A (en) * | 2016-08-31 | 2016-12-21 | 惠州富盛绝缘材料有限公司 | A kind of glue of the insulation tube of high temperature resistant low extraction |
CN106367010A (en) * | 2016-08-31 | 2017-02-01 | 惠州富盛绝缘材料有限公司 | Glue for compressor insulating tube |
CN107611199A (en) * | 2017-08-03 | 2018-01-19 | 浙江帆度光伏材料有限公司 | A kind of overlay film type solar cell backboard |
CN109177360A (en) * | 2018-07-27 | 2019-01-11 | 江苏贝格丽新材料科技有限公司 | A kind of paper-plastic stick ornament materials and its manufacturing method |
CN111892898A (en) * | 2019-05-05 | 2020-11-06 | 郑州大学 | Anti-ultraviolet-aging two-component polyurethane hollow glass sealant and preparation method thereof |
CN110041874A (en) * | 2019-05-08 | 2019-07-23 | 苏州十一方生物科技有限公司 | A kind of fluorinated polyether polyol prepolymer and preparation method thereof and pressure-sensitive hot melt adhesive |
CN110437722A (en) * | 2019-08-06 | 2019-11-12 | 苏州德圣辉新能源科技有限公司 | A kind of polyurethane reparation liquid |
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CN111690366A (en) * | 2020-07-28 | 2020-09-22 | 深圳市安伯斯科技有限公司 | Hybrid polyurethane resin glue and preparation method thereof |
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