CN108546539A - A kind of weatherability two-component polyurethane adhesive and solar cell backboard - Google Patents

A kind of weatherability two-component polyurethane adhesive and solar cell backboard Download PDF

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CN108546539A
CN108546539A CN201810331935.6A CN201810331935A CN108546539A CN 108546539 A CN108546539 A CN 108546539A CN 201810331935 A CN201810331935 A CN 201810331935A CN 108546539 A CN108546539 A CN 108546539A
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weatherability
hydroxyl
weight
parts
component polyurethane
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CN108546539B (en
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李永杰
田丛
黄建滔
刘瀛
姜伟
赵伟建
陈月霞
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CHINA LUCKY GROUP Corp
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CHINA LUCKY GROUP Corp
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    • CCHEMISTRY; METALLURGY
    • C09DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09JADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J175/00Adhesives based on polyureas or polyurethanes; Adhesives based on derivatives of such polymers
    • C09J175/04Polyurethanes
    • C09J175/06Polyurethanes from polyesters
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/42Polycondensates having carboxylic or carbonic ester groups in the main chain
    • C08G18/4266Polycondensates having carboxylic or carbonic ester groups in the main chain prepared from hydroxycarboxylic acids and/or lactones
    • C08G18/4269Lactones
    • C08G18/4277Caprolactone and/or substituted caprolactone
    • CCHEMISTRY; METALLURGY
    • C08ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08GMACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
    • C08G18/00Polymeric products of isocyanates or isothiocyanates
    • C08G18/06Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
    • C08G18/28Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
    • C08G18/40High-molecular-weight compounds
    • C08G18/62Polymers of compounds having carbon-to-carbon double bonds
    • C08G18/6216Polymers of alpha-beta ethylenically unsaturated carboxylic acids or of derivatives thereof
    • C08G18/622Polymers of esters of alpha-beta ethylenically unsaturated carboxylic acids
    • C08G18/6225Polymers of esters of acrylic or methacrylic acid
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/0481Encapsulation of modules characterised by the composition of the encapsulation material
    • HELECTRICITY
    • H01ELECTRIC ELEMENTS
    • H01LSEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042PV modules or arrays of single PV cells
    • H01L31/048Encapsulation of modules
    • H01L31/049Protective back sheets
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02EREDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00Energy generation through renewable energy sources
    • Y02E10/50Photovoltaic [PV] energy

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Condensed Matter Physics & Semiconductors (AREA)
  • Electromagnetism (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Health & Medical Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Medicinal Chemistry (AREA)
  • Polymers & Plastics (AREA)
  • Adhesives Or Adhesive Processes (AREA)
  • Polyurethanes Or Polyureas (AREA)

Abstract

The invention discloses a kind of weatherability two-component polyurethane adhesives, the host agent of described adhesive is made of hydroxyl-terminated polyurethane prepolymer A and polyacrylate polyol B, the hydroxyl-terminated polyurethane prepolymer A polymerize to obtain by polyester polyol with two functional isocyanates, and curing agent is polyfunctional isocyanate compound.Hydroxyl-terminated polyurethane prepolymer A proportions are 50 70 parts by weight in the host agent, and polyacrylate polyol B proportions are 30 50 parts by weight, and the equivalent proportion NCO/OH of the isocyanate group in the hydroxyl and curing agent in host agent is 0.5 2.0.Basement membrane interlayer can be made to realize high-adhesion using invention adhesives, and can still keep good adhesive strength after tropical deterioration is tested.

Description

A kind of weatherability two-component polyurethane adhesive and solar cell backboard
Technical field
The present invention relates to still can be with a kind of weatherability of excellent adhesive effect after exposure aging under long-term wet heat condition Two-component polyurethane adhesive, the technology can be applied to solar cell backboard or other open-air industrial fields.
Background technology
Solar energy is following most cleaning, the safe and reliable energy.Photovoltaic industry is increasingly becoming in the world after IT, micro- electricity The industry of another explosive growth after sub- industry.Therefore solar cell, can be used for too at least 25 years outdoor application time The plural layers of positive energy battery back-sheet need to have enough weatherabilities.And each compound adhesive used of structure interlayer must be simultaneously Have the comprehensive performances such as good application property, high bond strength, high-fire resistance, ultraviolet aging resistance and long-term moisture-proof pyrohydrolysis Advantage can just meet the field requirement.
A kind of Solvent type double-component polyurethane adhesive is arrived involved in patent CN102643622A, component A is polyhydroxy Unsaturated-resin, glass transition temperature are 20-50 DEG C, and B component is to be obtained through addition reaction with diisocyanate by polyalcohol - NCO blocked prepolymers, using this method obtain adhesive for polyurethane with good weatherability it is strong, but high-vitrification turn The adhesive of temperature causes compound initial bonding strength to decline in the wetability that can reduce film to a certain degree, compound and wound Easily occurs relative storey displacement in journey.
A kind of solar cell backboard nothing is disclosed in other patents such as CN105524588A based on prepolymer Solvent compound binding agent, the solvent-free volatilization of the technology, and the peel strength between binder and base material can be improved, and through double 85 PET/PVDF splitting power is positively retained at 4.5N/1.5cm after experiment 2000h, in order to make adhesive finally keep good painting Cloth viscosity using polyether polyol and isocyanates carries out that end-NCO prepolymers, and and polyether polyols are obtained by the reaction in the technology Alcohol, small molecule glycol and anti-hydrolysis agent form gluing agent prescription, since polyether polyol and polyester polyol, acrylate are polynary Alcohol is more soft compared to its strand and polarity is lower, so as to cause adhesive cured glue layer strength reduction, therefore, formula Polyether polyols alcohol content increases the peel strength that can reduce system to a certain extent in composition.
After applicant of the present invention is by furtheing investigate the above problem, finds using polyester polyol and gather in oneself Ester polyol combines the excellent polyacrylate polyol of humidity resistance with diisocyanate cpd prepolymer obtained by the reaction As host agent, and the adhesive formula formed using polyisocyanic acid ester polymer as curing agent has excellent initial stripping strong Degree can realize high-adhesion in basement membrane interlayer after curing, and can still keep good bonding strong after tropical deterioration is tested Degree reduces cost, energy saving advantage to improve the yield rate of backboard production, and have.
Invention content
The purpose of the invention is to provide a kind of weatherability two-component polyurethane adhesive, to solve existing solar energy Backboard is poor with adhesive initial adhesion, heat resistance is insufficient, the water-disintegrable difference of wet-heat resisting defect.
Technical scheme applied to solve the technical problem is:
A kind of weatherability two-component polyurethane adhesive, including host agent and curing agent, the host agent is by 50-70 parts by weight end Hydroxyl polyurethane prepolymer A and 30-50 parts by weight of polypropylene acid esters polyalcohol B compositions, the curing agent are multifunctional isocyanic acid Ester, the hydroxyl-terminated polyurethane prepolymer A is polymerize to obtain by polyester polyol with two functional isocyanates, wherein the polyester is more 50-80 parts by weight polycaprolactone polyols are further included in first alcohol;The two functional isocyanates proportion is 5-10 weights Measure part.
Above-mentioned weatherability two-component polyurethane adhesive, the polyacrylate polyol B are by carbon atom number in structure (methyl) acrylate monomer not less than 4 polymerize to obtain, wherein relative in 100 parts by weight of polypropylene acid esters polyalcohol B, It is 1-10 parts by weight, preferably 3-8 parts by weight containing hydroxyl (methyl) acrylate monomer proportion.
The Mw of above-mentioned weatherability two-component polyurethane adhesive, the polycaprolactone polyol is 500-2500, and hydroxyl value is 45-140mgKOH/g;The two functional isocyanates compound is selected from isoflurane chalcone diisocyanate, diphenyl methane -4,4 ' - At least one of diisocyanate, hexamethylene diisocyanate.
The glass transition temperature of above-mentioned weatherability two-component polyurethane adhesive, the polyacrylate polyol B is 0-20 DEG C, preferably 5-15 DEG C.
The Mw of above-mentioned weatherability two-component polyurethane adhesive, the polyacrylate polyol B is 20000-100000.
Above-mentioned weatherability two-component polyurethane adhesive, the curing agent are polyfunctional isocyanate, can be selected from being based on first Phenylene diisocyanate tripolymer, '-diphenylmethane diisocyanate tripolymer, isophorone diisocyanate trimer, hexa-methylene One or more mixtures in diisocyanate trimer.
Above-mentioned weatherability two-component polyurethane adhesive, the hydroxyl-terminated polyurethane prepolymer A and polyacrylate are polynary The equivalent proportion NCO/OH of isocyanate group is 0.5-2.0 in hydroxyl and curing agent in the host agent of alcohol B compositions.
Invention adhesives are used for solar cell backboard, and structure is:
A kind of solar cell backboard, by the film group selected from one or more of polyester film, fluororesin film, polyolefin film At, each interlayer using above-mentioned weatherability two-component polyurethane adhesive, it is compound after under the conditions of 40-50 DEG C, 2-4 days systems of curing .
Advantageous effect
Weatherability two-component polyurethane adhesive provided by the invention is by using hydroxyl-terminated polyurethane prepolymer A and poly- third The mixture of olefin(e) acid ester polyol B obtains adhesive formula as host agent, matching polyfunctional isocyanate as curing agent.Have Excellent base material adaptability, can be used for the Film laminated of one or more of polyester film, fluororesin film, polyolefin film;After solidification It can form the highly cross-linked reticular structure with urethane bond, thus can provide composite membrane excellent ripe using the adhesive Change peel strength, film product can effectively reduce solar energy through 40-50 DEG C, 2-4 days peel strength >=8.0N/15mm after curing Battery back film delamination risk;
Since in long-term hygrothermal environment hydrolysis easily occurs for ester bond, to reduce effective adhesive property of adhesive, Therefore use polyacrylate polyol and hydroxyl-terminated polyurethane prepolymer A as host agent in the adhesive designed in the present invention Formula, wherein polyacrylate polyol main chain are Long carbon chain structure, and in hydroxyl-terminated polyurethane prepolymer also include main chain section The low polycaprolactone polyol ingredient of middle bond content, thus the glued membrane that the adhesive obtained in the present invention is formed after curing can Make composite membrane product that there is permanently effective moisture-proof thermo-environment adaptability, it is strong through HAST50 hours and bis- " 85 " stripping in 2000 hours Degree may remain in 6N/15mm or more.
Specific implementation mode
Host agent of the present invention is polynary by 50-70 parts by weight hydroxyl-terminated polyurethane prepolymer A and 30-50 parts by weight of polypropylene acid esters Alcohol B compositions, the curing agent are polyfunctional isocyanate.The hydroxyl-terminated polyurethane prepolymer A is by polyester polyol and two officials Energy isocyanate polymeric obtains, wherein the polyester polyol further includes 50-80 parts by weight polycaprolactone polyols;It is described Two functional isocyanate proportions are 5-10 parts by weight.
Polyester polyol of the present invention can be polymerize to obtain by aromatic series or aliphatic carboxylic acid with aliphatic polyol, the fragrance Race or aliphatic carboxylic acid can be selected from phthalic acid, M-phthalic acid, terephthalic acid (TPA), succinic acid, adipic acid, sebacic acid One or more mixtures;The aliphatic polyol can be selected from ethylene glycol, diethylene glycol, 1,2- propylene glycol, 1,4- butanediols, One or more mixtures in 1,4-CHDM, 1,6- hexylene glycols, neopentyl glycol, trimethylolpropane, in order to carry The weatherability of high adhesive should further include polycaprolactone polyol, the polycaprolactone polyol in the polyester polyol Alcohol can pass through ethylene glycol, diethylene glycol, 1,2- propylene glycol, 1,4- butanediols, 1,6-HD, neopentyl glycol, trihydroxy methyl third One or more mixtures in alkane cause 6-caprolactone ring-opening polymerisation and form.The Mw of the polycaprolactone polyol is 500- 2500, hydroxyl value 45-140mgKOH/g, preferably Mw are 1000-2000, hydroxyl value 56-110mgKOH/g.
The two functional isocyanate compounds prepared used in hydroxyl-terminated polyurethane prepolymer A can be selected from toluene diisocyanate It is one or more mixed in acid esters, '-diphenylmethane diisocyanate, isophorone diisocyanate, hexamethylene diisocyanate Close object.
The polyacrylate polyol B is that (methyl) acrylate monomer by carbon atom number in structure not less than 4 is poly- Conjunction obtains, relative in 100 parts by weight of polypropylene acid esters polyalcohol B, shared by hydroxyl (methyl) acrylate monomer Ratio is 1-10 parts, preferably 3-8 parts by weight.
Wherein, carbon atom number not less than 4 (methyl) acrylate monomer can be selected from methyl acrylate, ethyl acrylate, Butyl acrylate, isobutyl acrylate, glycidyl acrylate, the just own ester of acrylic acid, cyclohexyl acrylate, acrylic acid are just pungent Ester, Isooctyl acrylate monomer, acrylic acid-2-ethyl caproite, isobornyl acrylate, lauryl acrylate, methyl methacrylate, Ethyl methacrylate, butyl methacrylate, Isobutyl methacrylate, glycidyl methacrylate, metering system The just own ester of acid, cyclohexyl methacrylate, n octyl methacrylate, isooctyl methacrylate, methacrylic acid -2- ethyls The mixture of one or more monomers in own ester, isobornyl methacrylate, lauryl methacrylate.It is excellent in the present invention Select methyl acrylate, ethyl acrylate, butyl acrylate, isobutyl acrylate, glycidyl acrylate, acrylic acid just oneself Ester, cyclohexyl acrylate, n-octyl, Isooctyl acrylate monomer, acrylic acid-2-ethyl caproite, methyl methacrylate, first Base ethyl acrylate, butyl methacrylate, Isobutyl methacrylate, glycidyl methacrylate, methacrylic acid Just own ester, cyclohexyl methacrylate, n octyl methacrylate, isooctyl methacrylate, methacrylic acid -2- ethyl hexyls More preferably include methyl acrylate, ethyl acrylate, butyl acrylate, isobutyl acrylate, acrylic acid contracting at least two in ester Water glyceride, the just own ester of acrylic acid, cyclohexyl acrylate, methyl methacrylate, ethyl methacrylate, methacrylic acid fourth In ester, Isobutyl methacrylate, glycidyl methacrylate, the just own ester of methacrylic acid, cyclohexyl methacrylate At least two monomers mixture.
2-Hydroxy ethyl acrylate, acrylic acid -3- hydroxyls third are can be selected from containing hydroxyl (methyl) acrylate monomer Ester, acrylic acid -4- hydroxybutyls, methacrylic acid -2- hydroxy methacrylates, methacrylic acid -3- hydroxy propyl esters, methacrylic acid - The mixture of one or more monomers in 4- hydroxybutyls.
The glass transition temperature (Tg) of the polyacrylate polyol B is 0~20 DEG C, preferably 5~15 DEG C;Mw is 20000-100000, preferably 40000-80000.
In 100 parts by weight host agents, when hydroxyl-terminated polyurethane prepolymer A proportions are 50-70 parts by weight, polyacrylic acid When ester polyol B proportions are 30-50 parts by weight, adhesive composition can be made to keep good to film interface cohesive force Excellent humidity resistance is played simultaneously, even if can also realize good adhesive strength by outdoor long-term exposure.
The curing agent is polyfunctional isocyanate, be can be selected from based on toluene diisocyanate trimer, diphenyl-methane two One kind or more in isocyanate trimer, isophorone diisocyanate trimer, hexamethylene diisocyanate trimer The mixture of kind, preferably one kind in isophorone diisocyanate trimer and hexamethylene diisocyanate trimer or two Person's mixture.
Hydroxyl included in the host agent of the hydroxyl-terminated polyurethane prepolymer A and polyacrylate polyol B compositions with The equivalent proportion NCO/OH of isocyanate group in curing agent is 0.5-2.0, and preferably NCO/OH is 1.0-1.5.
For more specific description technical scheme of the present invention, further description will be unfolded by embodiment below, but Listed embodiment only plays illustration, and is not intended to limit the scope of the present invention.
Embodiment
The synthetic method of hydroxyl-terminated polyurethane prepolymer A1 is as follows:
40 parts by weight Dynacoll 7250 and 50 parts by weight PD1-10 are weighed by inventory in table 1, addition is stirred equipped with machinery It mixes, in the reaction kettle of thermometer, reflux condensing tube and nitrogen protection, and the ethyl acetate of 100 weight deals is added, be heated to 75 DEG C, after all dissolution of raw material, the Wannate-MDI50 of 10 parts by weight is added drop-wise in 1 hour in reaction system, is kept the temperature The reaction was complete after 2 hours, is down to room temperature discharging, obtains the resin solution (solid content of hydroxyl-terminated polyurethane prepolymer A1 50wt%).
It feeds intake by each weight of material part in table 1, uses synthetic method system identical with hydroxyl-terminated polyurethane prepolymer A1 Standby to obtain the resin solution of hydroxyl-terminated polyurethane prepolymer A2-A4, table 1 show the throwing of hydroxyl-terminated polyurethane prepolymer A1-A4 Doses.
Table 1
The details of each ingredient is as follows in table 1:
Dynacoll 7250 (trade name):Win the polyester polyol of wound industrial group manufacture, Mw=5500, hydroxyl value=18- 24mgKOH/g;
Dynacoll 7320 (trade name):Win the polyester polyol of wound industrial group manufacture, Mw=3500, hydroxyl value=27- 34mgKOH/g;
PD1-10 (trade name):The polycaprolactone polyol of BASF AG's manufacture, Mw=1000, hydroxyl value=108- 116mgKOH/g;
PD1-20 (trade name):The polycaprolactone polyol of BASF AG's manufacture, Mw=2000, hydroxyl value=53- 59mgKOH/g;
220EC (trade name):The polycaprolactone polyol of Daicel company manufacture, Mw=2000, hydroxyl value=56mgKOH/g
Wannate-MDI50:The diisocyanate cpd of Yantai Wanhua chemistry manufacture.
The synthetic method of polyacrylate polyol B1 is as follows:
Equipped with mechanical agitation, thermometer, reflux condensing tube reaction kettle in, by weight be added 100 parts of ethyl acetate, 75 DEG C are heated to, by 33 parts by weight of methylmethacrylate, 50 parts by weight of acrylic acid N-butyls, 14 weight parts of methacrylic acid rings Own ester and 3 weight parts of methacrylic acid hydroxyl ethyl esters are continuously dripped in 5 hours after mixing with 1.1 parts by weight azodiisobutyronitriles It is added in reaction system, heat preservation is down to room temperature after 3 hours, and it is 41000 to obtain yields, hydroxyl value 13mgKOH/g, vitrifying The resin solution for the polyacrylate polyol B1 that transition temperature is 2 DEG C, solid content 50wt%.
It feeds intake by each weight of material part in table 2, is prepared using synthetic method identical with polyacrylate polyol B1 Obtain the resin solution of polyacrylate polyol B2-B4, table 2 show polyacrylate polyol B1-B4 inventory and Product related property parameter.
Table 2
The manufacture of host agent in embodiment:
By the parts by weight of each component in table 3, by the resin solution (50wt%) of 69 parts of hydroxyl-terminated polyurethane prepolymer A1 with The resin solution (50wt%) of 31 parts of polyacrylate polyol B1 is sufficiently mixed, and obtains host agent 1.Host agent 2-6 is led according to preparation 1 same method of agent obtains.
Table 3
Embodiment 1-6
Embodiment 1-6 adhesive therefor formulas are carried out according to parts by weight shown in table 4 to prepare, and are evaluated using properties of sample Method is tested.Wherein, curing agent C is that the hexamethylene diisocyanate trimer class of Beyer Co., Ltd's manufacture cures in table 4 Agent N3300 (trade name), NCO content 21.8wt%, solid content 100%.
Properties of sample evaluation method:
1, the preparation of test sample
The pet film (PET) and 22.5 μm of PVDF thin films that the base material used is 125 μm pass through Sided corona treatment is crossed, the binder solution configured is coated in PET film, glue-spread 20-25g/m2, 80 DEG C of dryings 2 minutes, PVDF thin film is fully bonded with PET film, obtains compound print.
2, initial bonding strength is tested
Compound print samples the peel strength test of progress immediately after the completion of preparing, with reference to standard GB/T/T 2790- 1995《180 ° of peeling strength test method flexible materials of adhesive are to rigid material》In method in peeling rate 300mm/ It is tested under conditions of min, batten width 15mm.
3, peel strength test is cured
The peel strength test that compound print carries out after being cured under the conditions of 50 DEG C, 48 hours, with reference to standard GB/T/ T2790-1995《180 ° of peeling strength test method flexible materials of adhesive are to rigid material》In method in peeling rate It is tested under conditions of 300mm/min, batten width 15mm.
4, HAST ageing-resistant performances are tested
1) HAST50 hours peel strengths:After print after curing is placed 50 hours under 121 DEG C, 100% environment of humidity The peel strength test of progress, with reference to standard GB/T/T 2790-1995《180 ° of peeling strength test methods of adhesive are flexible Material is to rigid material》In method tested under conditions of peeling rate 300mm/min, batten width 15mm.
2) HAST100 hours it is apparent:Print after curing is seen after being placed 100 hours under 121 DEG C, 100% environment of humidity It is apparent to examine sample, if the bad phenomenons such as shrinkage, blistering, delamination occurs in bonding part.
5, long-term high temperature and humidity resistance test
It is after curing according to being used under the conditions of 85 of the requirement in standard GB/T/T2423.3-2006 DEG C, humidity 85% Print is evaluated, and sample standing time is 2000 hours.
Table 4
Comparative example 1-3
A 1-3 adhesive therefor formulas are compared by the parts by weight of each component in table 5 to prepare, and use and implementation The same properties of sample evaluation method of example is tested.
Table 5
It is in conjunction with data in table 3 and table 4 it is found that pre- containing hydroxyl-terminated polyurethane simultaneously in two-component polyurethane adhesive host agent Polymers A and polyacrylate polyol B, thus, two-component polyurethane adhesive provided in embodiment have it is excellent just Beginning peel strength, curing peel strength and wet-hot aging performance, after test in 2000 hours under the conditions of harsh double 85, still It can keep good adhesive property.
According to comparative example 1-3 in table 5 the results show that comparative example 1 and comparative example 2 include the poly- ammonia of terminal hydroxy group when different in being formulated Ester prepolymer A and polyacrylate polyol B, thus initial bonding strength is relatively low, and it is strong to have excellent curing stripping Degree or ageing-resistant performance.And the host agent and curing agent ratio of comparative example 3 are not within the scope of the claims, compared with embodiment effect Initial bonding strength, curing peel strength and wet-hot aging performance are poor.
Two-component polyurethane adhesive provided by the invention can be used in polyester film, fluororesin film, polyolefin film one kind with The bonding of upper film, gained joint product not only has excellent initial bonding strength, but also film product is through 40-50 DEG C, 2-4 days Peel strength >=8.0N/15mm after curing, and there is excellent wet-hot aging performance, it is small through HAST50 hours and bis- " 85 " 2000 When peel strength may remain in 6.0N/15mm or more.

Claims (8)

1. a kind of weatherability two-component polyurethane adhesive, including host agent and curing agent, it is characterised in that:The host agent is by 50- 70 parts by weight hydroxyl-terminated polyurethane prepolymer A and 30-50 parts by weight of polypropylene acid esters polyalcohol B compositions, the curing agent is more Functional isocyanate, the hydroxyl-terminated polyurethane prepolymer A are polymerize to obtain by polyester polyol with two functional isocyanates, In, 50-80 parts by weight polycaprolactone polyols are further included in the polyester polyol;Shared by two functional isocyanate Ratio is 5-10 parts by weight.
2. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The polyacrylate is polynary Alcohol B is that (methyl) acrylate monomer by carbon atom number in structure not less than 4 polymerize to obtain, wherein relative to 100 parts by weight It is 1-10 parts by weight, preferably 3- containing hydroxyl (methyl) acrylate monomer proportion in polyacrylate polyol B 8 parts by weight.
3. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The polycaprolactone polyol Mw be 500-2500, hydroxyl value 45-140mgKOH/g;The two functional isocyanates compound is selected from two isocyanide of isophorone At least one of acid esters, diphenyl methane -4,4 '-diisocyanate, hexamethylene diisocyanate.
4. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The polyacrylate is polynary The glass transition temperature of alcohol B is 0-20 DEG C, preferably 5-15 DEG C.
5. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The polyacrylate is polynary The Mw of alcohol B is 20000-100000.
6. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The curing agent is multifunctional Isocyanates can be selected from different based on toluene diisocyanate trimer, '-diphenylmethane diisocyanate tripolymer, isophorone two One or more mixtures in cyanate tripolymer or hexamethylene diisocyanate trimer.
7. weatherability two-component polyurethane adhesive according to claim 1, it is characterised in that:The hydroxyl-terminated polyurethane is pre- The equivalent proportion NCO/OH of isocyanate group in hydroxyl and curing agent in the host agent of polymers A and polyacrylate polyol B compositions For 0.5-2.0.
8. a kind of solar cell backboard, it is characterised in that:By in polyester film, fluororesin film, polyolefin film it is a kind of with On film composition, each interlayer use as claim 1-7 any one of them weatherability two-component polyurethane adhesives it is compound Afterwards under the conditions of 40-50 DEG C, cures 2-4 days and be made.
CN201810331935.6A 2018-04-13 2018-04-13 Weather-resistant two-component polyurethane adhesive and solar cell back plate Active CN108546539B (en)

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CN110373146A (en) * 2019-07-30 2019-10-25 郑州中原思蓝德高科股份有限公司 Dual-component polyurethane sealant and its preparation method and application
CN111783922A (en) * 2020-06-09 2020-10-16 苏州赛伍应用技术股份有限公司 Radio frequency tag, preparation method thereof and photovoltaic module
CN111909649A (en) * 2020-07-24 2020-11-10 中国乐凯集团有限公司 Adhesive, solar cell back sheet and solar cell
CN112226189A (en) * 2020-09-18 2021-01-15 汕头市鲁汕化工原料有限公司 Double-component water-based adhesive
CN112708388A (en) * 2021-01-08 2021-04-27 中国乐凯集团有限公司 Adhesive for lithium battery packaging
CN113490726A (en) * 2019-10-01 2021-10-08 株式会社Lg化学 Surface protective film, method for manufacturing surface protective film, and method for manufacturing organic light-emitting electronic device

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CN107541173A (en) * 2016-06-29 2018-01-05 上海纽帕化工有限公司 A kind of solar energy backboard adhesive and preparation method thereof

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CN102037040A (en) * 2008-04-01 2011-04-27 汉高公司 High heat resistant adhesive and sealant compositions
CN104479619A (en) * 2014-12-11 2015-04-01 乐凯胶片股份有限公司 Adhesive composition and solar cell rear panel
CN107541173A (en) * 2016-06-29 2018-01-05 上海纽帕化工有限公司 A kind of solar energy backboard adhesive and preparation method thereof

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Publication number Priority date Publication date Assignee Title
CN110373146A (en) * 2019-07-30 2019-10-25 郑州中原思蓝德高科股份有限公司 Dual-component polyurethane sealant and its preparation method and application
CN110373146B (en) * 2019-07-30 2022-02-01 郑州中原思蓝德高科股份有限公司 Two-component polyurethane sealant and preparation method and application thereof
CN113490726A (en) * 2019-10-01 2021-10-08 株式会社Lg化学 Surface protective film, method for manufacturing surface protective film, and method for manufacturing organic light-emitting electronic device
CN111783922A (en) * 2020-06-09 2020-10-16 苏州赛伍应用技术股份有限公司 Radio frequency tag, preparation method thereof and photovoltaic module
CN111783922B (en) * 2020-06-09 2024-04-09 苏州赛伍应用技术股份有限公司 Radio frequency tag, preparation method thereof and photovoltaic module
CN111909649A (en) * 2020-07-24 2020-11-10 中国乐凯集团有限公司 Adhesive, solar cell back sheet and solar cell
CN111909649B (en) * 2020-07-24 2022-06-21 中国乐凯集团有限公司 Adhesive, solar cell back sheet and solar cell
CN112226189A (en) * 2020-09-18 2021-01-15 汕头市鲁汕化工原料有限公司 Double-component water-based adhesive
CN112708388A (en) * 2021-01-08 2021-04-27 中国乐凯集团有限公司 Adhesive for lithium battery packaging

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