WO2018121656A1 - 一种白色聚烯烃封装胶膜及其制备方法 - Google Patents

一种白色聚烯烃封装胶膜及其制备方法 Download PDF

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WO2018121656A1
WO2018121656A1 PCT/CN2017/119303 CN2017119303W WO2018121656A1 WO 2018121656 A1 WO2018121656 A1 WO 2018121656A1 CN 2017119303 W CN2017119303 W CN 2017119303W WO 2018121656 A1 WO2018121656 A1 WO 2018121656A1
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white
parts
polyolefin
encapsulating film
film according
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PCT/CN2017/119303
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English (en)
French (fr)
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阳志荣
郭森
唐舫成
汪加胜
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广州鹿山新材料股份有限公司
江苏鹿山光电科技有限公司
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Publication of WO2018121656A1 publication Critical patent/WO2018121656A1/zh

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    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/04—Non-macromolecular additives inorganic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
    • C09J11/02—Non-macromolecular additives
    • C09J11/06—Non-macromolecular additives organic
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J123/00—Adhesives based on homopolymers or copolymers of unsaturated aliphatic hydrocarbons having only one carbon-to-carbon double bond; Adhesives based on derivatives of such polymers
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor 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
    • H01L31/04—Semiconductor 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
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/048—Encapsulation of modules
    • H01L31/0481—Encapsulation of modules characterised by the composition of the encapsulation material
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2201/00—Properties
    • C08L2201/08—Stabilised against heat, light or radiation or oxydation
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2203/00—Applications
    • C08L2203/20—Applications use in electrical or conductive gadgets
    • C08L2203/204—Applications use in electrical or conductive gadgets use in solar cells
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
    • C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
    • C—CHEMISTRY; METALLURGY
    • C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
    • C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
    • C08L2205/00—Polymer mixtures characterised by other features
    • C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2203/00—Applications of adhesives in processes or use of adhesives in the form of films or foils
    • C09J2203/322—Applications of adhesives in processes or use of adhesives in the form of films or foils for the production of solar panels
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2301/00—Additional features of adhesives in the form of films or foils
    • C09J2301/40—Additional features of adhesives in the form of films or foils characterized by the presence of essential components
    • C09J2301/408—Additional features of adhesives in the form of films or foils characterized by the presence of essential components additives as essential feature of the adhesive layer
    • Y—GENERAL 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
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E10/00—Energy generation through renewable energy sources
    • Y02E10/50—Photovoltaic [PV] energy

Definitions

  • the present application relates to the field of solar cell module packaging materials, and in particular, to a white polyolefin encapsulant film and a preparation method thereof.
  • the traditional double-glass high-reaction components are mainly EVA film, and the back is white high-reverse EVA film, but the long-term use temperature of solar cells is about 70 °C. At this temperature, EVA will creep and at the same time It will be gradually decomposed.
  • the water vapor transmission rate of EVA is 10-30g/m 2 ⁇ day. The water vapor easily penetrates through the side of the double glass high-reaction component. EVA hydrolysis releases acetic acid, which causes the cell to be corroded and increases the potential induction. The probability of attenuation (PID) and snail formation is reduced, which reduces the service life of the double-glass components. Therefore, it is necessary to develop a high anti-packaging material with low water permeability and prolong the power generation cycle of the solar double-glass components.
  • a first object of the present application is to provide a white polyolefin encapsulating film which has low manufacturing cost and high moisture barrier property and can be used for a solar cell. field.
  • a second object of the present application is to provide a method for preparing a white polyolefin encapsulating film in the first aspect, which is simple in process, simple in operation, and low in cost.
  • a white polyolefin encapsulating film comprising the following ingredients in parts by weight:
  • the polyolefin resin A has a melt index of 3 to 30 g/10 min and a melting point of 60 to 115 °C.
  • the polyolefin resin B has a melt index of 10 to 45 g/10 min and a melting point of 50 to 100 °C.
  • the organic peroxy compound initiator is carbonic acid-O, O-(1,1-dimethylethyl)-O-(2-ethylhexyl) ester, t-butyl peroxycarbonate 2-ethylhexyl ester, tert-butylperoxy 2-ethylhexyl carbonate, tert-butyl peroxycarbonate 2-ethylhexyl ester, tert-butylperoxyformate 2-ethylhexyl ester, One or any combination of 2-ethylhexyl t-butylperoxyformate and 2-ethylhexylperoxyperoxycarbonate.
  • the crosslinking assistant is triallyl isocyanurate, triallyl isocyanurate, 1,3,5-tri-2-propenyl-1,3,5- Triazine-2,4,6(1H,3H,5H)-trione, triallyl isocyanate, triisopropylisocyanate, triallyl isocyanurate and isocyanurate One or any combination of propyl esters.
  • the tackifying coupling agent is vinyltriethoxysilane, ethylenetriethoxysilane, triethoxyvinylsilane, vinyltriethoxysilane, (triethoxysilyl)ethylene One or any combination of triethoxyvinylsilanes.
  • the masterbatch is a mixture of a titanium white pigment and the polyolefin resin A, which is formed by twin-screw melt extrusion of a strand; and the titanium white pigment is used in an amount of 40% by weight.
  • the amount of the polyolefin resin A used is -70% by weight, and is 30% to 60% by weight.
  • the titanium white pigment comprises titanium dioxide and aluminum oxide, and the content of titanium dioxide is more than 96% by weight, and the content of aluminum oxide is more than 3% by weight.
  • the light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinol) alkanoate;
  • the ultraviolet light absorber is [2-hydroxy-4-(xin) Oxy)phenyl]phenyl ketone.
  • a method for preparing a white polyolefin encapsulating film comprising the steps of: formulating a polyolefin resin A, a polyolefin resin B, an organic peroxy compound initiator, a crosslinking assistant, a viscosity-increasing coupling agent, and a color
  • the masterbatch, the light stabilizer and the ultraviolet light absorber are uniformly mixed in the mixing tank, and then put into a casting machine, and after plasticating, extruding, casting, drawing and winding, the white polyolefin encapsulating film is obtained.
  • the white polyolefin encapsulating film provided by the present application has good water blocking performance, can effectively reduce the water vapor transmission rate, thereby improving the penetration of water vapor on the side of the solar cell double glass component, and avoiding corrosion of the cell sheet, effectively The snail pattern is prevented from being generated, and the anti-PID function is played, which prolongs the service life of the double glass component.
  • the white polyolefin encapsulating film with good water blocking performance solves the defect that the conventional white high-reverse EVA packaging film has low water blocking performance.
  • the organic peroxy compound initiator and the crosslinking assistant are added to the formulation, and the chemical cross-linking causes the polyolefin to be transformed into a three-dimensional network structure, which increases the molecular weight, and the molecular chain is not easy to move and diffuse, thereby making
  • the white polyolefin encapsulating film of the solar cell has good compactness, low porosity and excellent water blocking performance, which greatly improves the service life and power generation cycle of the component.
  • the white polyolefin encapsulating film with good water blocking performance provided by the present application has excellent heat-resistant oxygen aging and anti-ultraviolet performance, and is added with a light stabilizer and a conventional white high-reverse EVA double glass component.
  • the cross-linking reaction produces less UV groups, and can effectively quench the free radicals generated by light and oxygen, which greatly reduces the use of double-glass components. Yellowing and cracking.
  • the preparation method of the white polyolefin encapsulating film with good water blocking performance provided by the application has the advantages of simple process, simple operation and low cost.
  • 1 is a bar graph of water vapor transmission rate of a white polyolefin encapsulating film according to Examples 1-7 of the present application;
  • a white polyolefin encapsulating film with good water blocking performance comprising the following components by weight: polyolefin resin A 100 parts; polyolefin resin B20-50 parts; organic peroxy compound initiator 0.6-2.0 parts; 0.5-2.5 parts of co-agent; 0.3-0.8 part of tackifying coupling agent; 15-25 parts of masterbatch; 0.1-0.6 part of light stabilizer; 0.1-0.6 part of ultraviolet light absorber.
  • the polyolefin resin A has a melt index of 3 to 30 g/10 min and a melting point of 60 to 115 °C.
  • the polyolefin resin B has a melt index of 10 to 45 g/10 min and a melting point of 50 to 100 °C.
  • the organic peroxy compound initiator is carbonic acid-O,O-(1,1-dimethylethyl)-O-(2-ethylhexyl) ester, tert-butyl 2-ethylhexyl oxycarbonate, 2-ethylhexylperoxy-tert-butylperoxide, 2-ethylhexyl peroxybutyrate, 2-ethylhexyl t-butylperoxyformate One or any combination of an ester, 2-ethylhexyl t-butylperoxycarboxylate, and 2-ethylhexyl t-butylperoxycarbonate.
  • the crosslinking assistant is triallyl isocyanurate, triallyl isocyanurate, 1,3,5-tri-2-propenyl-1,3, 5-triazine-2,4,6(1H,3H,5H)-trione, triallyl isocyanate, triisopropylisocyanate, triallyl isocyanurate and isocyanuric acid One or any combination of triallyl esters.
  • the tackifying coupling agent is vinyltriethoxysilane, ethylenetriethoxysilane, triethoxyvinylsilane, vinyltriethoxysilane, (triethoxysilyl) One or any combination of ethylene, triethoxyvinylsilane.
  • (triethoxysilyl) ethylene also known as vinyl triethoxysilane or triethoxyvinylsilane, molecular weight of 190.32, CAS number 78-08-0, it is a colorless A clear liquid with an ester taste.
  • the masterbatch is a mixture of a titanium white pigment and the polyolefin resin A, which is obtained by pelletizing by twin-screw melt extrusion; and the amount of the titanium white pigment is by weight. 40% to 70%, the polyolefin resin A is used in an amount of 30% to 60% by weight.
  • the titanium white pigment comprises titanium dioxide and aluminum oxide, and the content of titanium dioxide is greater than 96% by weight, and the content of aluminum oxide is greater than 3% by weight.
  • the light stabilizer is bis(2,2,6,6-tetramethyl-4-piperidinol) alkanoate;
  • the ultraviolet light absorber is [2-hydroxy-4- (octyloxy)phenyl]phenyl ketone.
  • a method for preparing a white polyolefin encapsulating film with good water blocking performance comprising the steps of: formulating a polyolefin resin A, a polyolefin resin B, an organic peroxy compound initiator, a crosslinking assistant, and a viscosity-increasing agent
  • the coupling agent, the masterbatch, the light stabilizer and the ultraviolet light absorber are uniformly mixed in the mixing tank, and then put into a casting machine, which is obtained by plasticating extrusion, casting, drawing and winding.
  • a white polyolefin encapsulating film having good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 3 g/10 min and a melting point of 115 ° C; 20 parts of a melt index of 10 g / 10 minutes, polyolefin resin B having a melting point of 100 ° C; 2.0 parts of carbon peroxyacid-O, O-(1,1-dimethylethyl)-O-(2-ethylhexyl) ester, 0.6 parts of triene Propyl isocyanurate, 0.8 parts of vinyltriethoxysilane, 25 parts of masterbatch, 0.4 parts of bis(2,2,6,6-tetramethyl-4-piperidinol) alginate , 0.6 parts of [2-hydroxy-4-(octyloxy)phenyl]phenyl ketone, the above components are uniformly mixed through a mixing tank, put into a casting machine and set parameters, and plasticized and ex
  • the masterbatch is a mixture of 40% titanium dioxide and 60% polyolefin A, which are formed by twin-screw melt extrusion stripping.
  • a white polyolefin encapsulating film having good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 10 g/10 min and a melting point of 105 ° C; 25 parts of a melt index of 15 g / 10 minutes, polyolefin resin B having a melting point of 90 ° C; 1.5 parts of t-butyl peroxycarbonate 2-ethylhexyl ester, 0.8 parts of triallyl isocyanurate, 0.7 parts of ethylene triethoxysilane, 22 parts masterbatch, 0.1 part bis(2,2,6,6-tetramethyl-4-piperidinol) alkalate, 0.5 part [2-hydroxy-4-(octyloxy)phenyl] Phenyl ketone, the above components are uniformly mixed through a mixing tank, put into a casting machine and set parameters, and plasticized, extruded, cast, drawn, and wound to form a white high-resistance solar
  • the masterbatch is a mixture of 46% titanium dioxide and 54% polyolefin A, which are formed by twin-screw melt extrusion stripping.
  • a white polyolefin encapsulating film with good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 15 g/10 min and a melting point of 95 ° C; 30 parts of a melt index of 25 g / 10 minutes, polyolefin resin B having a melting point of 80 ° C; 1.2 parts of t-butyl peroxy 2-ethylhexyl carbonate, 1.0 part of 1,3,5-tri-2-propenyl-1,3,5-three Pyrazine-2,4,6(1H,3H,5H)-trione, 0.6 parts of triethoxyvinylsilane, 20 parts of masterbatch, 0.3 parts of bis(2,2,6,6-tetramethyl-4 -piperidinol)succinate, 0.4 parts of [2-hydroxy-4-(octyloxy)phenyl]phenyl ketone, the above components are uniformly mixed in a mixing tank, put into a casting machine
  • the masterbatch is a mixture of 52% titanium dioxide and 48% polyolefin A, which are formed by double-screw melt extrusion stripping.
  • a white polyolefin encapsulating film with good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 20 g/10 min and a melting point of 80 ° C; 35 parts of a melt index of 30 g / 10 minutes, polyolefin resin B having a melting point of 70 ° C; 1.0 part of t-butyl peroxycarbonate 2-ethylhexyl ester, 1.5 parts of triallyl isocyanate, 0.5 part of vinyl triethoxysilane, 18 parts of masterbatch, 0.2 part of bis(2,2,6,6-tetramethyl-4-piperidinol) alkalate, 0.2 part of [2-hydroxy-4-(octyloxy)phenyl]phenyl ketone,
  • the components are uniformly mixed in a mixing tank, put into a casting machine and set parameters, and plasticized, extruded, cast, drawn, and wound to form a white high-resistance poly
  • the masterbatch is a mixture of 58% titanium dioxide and 42% polyolefin A, which are formed by twin-screw melt extrusion stripping.
  • a white polyolefin encapsulating film with good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 25 g/10 min and a melting point of 70 ° C; 45 parts of a melt index of 35 g / 10 min, polyolefin resin B having a melting point of 60 ° C; 0.6 part of 2-ethylhexyl t-butylperoxyformate, 2.5 parts of triisopropyliso-cyanurate, 0.3 part (triethoxymethyl) Silyl) ethylene, 15 parts masterbatch, 0.5 part bis(2,2,6,6-tetramethyl-4-piperidinol) alginate, 0.3 parts [2-hydroxy-4-(octyloxy) Phenyl]phenyl ketone, the above components are uniformly mixed through a mixing tank, put into a casting machine and set parameters, and plasticized, extruded, cast, drawn, and wound to form white high-resi
  • the masterbatch is a mixture of 64% titanium dioxide and 36% polyolefin A, which are formed by double-screw melt extrusion stripping.
  • a white polyolefin encapsulating film with good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 30 g/10 min and a melting point of 60 ° C; 50 parts of a melt index of 45 g / 10 minutes, polyolefin resin B having a melting point of 50 ° C; 0.8 parts of t-butyl peroxycarbonate 2-ethylhexyl ester, 2.0 parts of triallyl isocyanurate, 0.4 parts of triethoxyvinylsilane, 17 parts Masterbatch, 0.6 parts of bis(2,2,6,6-tetramethyl-4-piperidinol) alginate, 0.1 part of [2-hydroxy-4-(octyloxy)phenyl]phenyl Ketone, the above components are uniformly mixed through a mixing tank, put into a casting machine and set parameters, and plasticized, extruded, cast, drawn, and wound to form a white high-resistance poly
  • the masterbatch is a mixture of 70% titanium dioxide and 30% polyolefin A, which are formed by twin-screw melt extrusion stripping.
  • a white polyolefin encapsulating film having good water blocking performance comprising the following components by weight: 100 parts of polyolefin resin A having a melt index of 25 g/10 min and a melting point of 70 ° C; and 55 parts of a melt index of 50 g / 10 minutes, polyolefin resin B having a melting point of 45 ° C; 0.7 part of a mixture of t-butyl peroxycarbonate 2-ethylhexyl ester and t-butyl peroxycarbonate 2-ethylhexyl ester, 1.8 parts of isocyanuric acid three a mixture of allyl ester and triallyl isocyanate, a mixture of 0.3 parts of triethoxyvinylsilane and vinyltriethoxysilane, 19 parts of masterbatch, 0.7 parts of bis (2,2,6,6- Tetramethyl-4-piperidinol) adenate, 0.2 parts of [2-hydroxy-4-(octyloxy)pheny
  • the masterbatch is a mixture of 73% titanium dioxide and 27% polyolefin A, which are formed by twin-screw melt extrusion stripping.
  • Test instrument water vapor transmission rate tester
  • Test principle the sample is fixed in the middle of the test chamber, the test chamber is divided into two chambers, the stable relative humidity gas flows in the upper chamber of the film, the dry gas flows in the lower chamber of the film, and the water molecules pass through the sample.
  • the gas is diffused to the other side of the dry gas, carried by the flowing gas to the sensor, and analyzed by the water vapor concentration measured by the sensor to calculate the water vapor transmission rate.
  • the temperature is 25 ° C
  • the humidity of the dry air in the lower chamber is 0%
  • the humidity of the upper chamber gas is 80%
  • the thickness of the sample is 1.5 mm.
  • the white polyolefin encapsulating film having good water blocking performance obtained in Examples 1-7 was subjected to an aging test.
  • the specific test methods and test results are as follows:
  • Test standard wet heat and ultraviolet aging test according to the experimental method of GB/T 29848-2013;
  • Damp heat aging temperature 85 ° C + 2 ° C, relative humidity 85% + 2%, after 1000 h taken out;
  • Ultraviolet aging 60 KW ⁇ h/m 2 was irradiated at a wavelength of 280 nm to 400 nm.
  • the white polyolefin encapsulating film provided by the embodiment of the present application has a low water vapor transmission rate and a high aging resistance compared with the white EVA packaging film.
  • the water vapor transmission rate of -30 g/m 2 ⁇ day, the white polyolefin encapsulating film of Examples 1-7 has a water vapor transmission rate of less than 10% of the competitors, and can greatly reduce the potential induced attenuation (PID). And the probability of occurrence of snail patterns.
  • PID potential induced attenuation
  • excellent aging resistance can greatly extend the power generation cycle and service life of solar dual-glass components, especially in the harsh environment.

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  • General Physics & Mathematics (AREA)
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  • Computer Hardware Design (AREA)
  • Microelectronics & Electronic Packaging (AREA)
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  • Inorganic Chemistry (AREA)
  • Processes Of Treating Macromolecular Substances (AREA)
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Abstract

本申请公开了一种白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：聚烯烃树脂A 100份；聚烯烃树脂B 20-50份；有机过氧化合物引发剂0.6-2.0份；交联助剂0.5-2.5份；增粘偶联剂0.3-0.8份；色母粒15-25份；光稳定剂0.1-0.6份；紫外光吸收剂0.1-0.6份。该白色聚烯烃封装胶膜有效的降低了水汽透过率，从而改善了水汽对太阳电池双玻组件侧面的渗透作用，避免电池片的腐蚀，有效的阻止了蜗牛纹的产生和起到了抗PID的作用，延长了双玻组件的使用寿命。本申请还公开了一种白色聚烯烃封装胶膜的制备方法，工艺简单，操作简便，成本低。

Description

一种白色聚烯烃封装胶膜及其制备方法 技术领域
本申请涉及太阳电池组件封装材料技术领域，尤其涉及一种白色聚烯烃封装胶膜及其制备方法。
背景技术
随着社会的不断发展，环境污染和能源短缺成为人类面临的最大挑战，利用太阳电池将清洁的、可再生的太阳能转换成电能是解决这两个问题最有效的方法之一。普通电池片的寿命是30年，而组件的使用只有25年，因此太阳电池组件的高使用寿命成为人们日益关注的重点，而双玻高反组件具有生命周期更高的发电量，比普通单玻组件高出10％以上，且使用寿命比普通单玻组件长5年以上。传统单玻组件的衰减大约在0.7％左右，双玻高反组件是0.5％，因此双玻高反组件越来越受到人们的青睐。
目前传统的双玻高反组件主要为EVA胶膜，背面为白色高反EVA胶膜，但是太阳电池的长期使用温度约在70℃左右，在此温度下，EVA会发生蠕变，同时在高温下会逐步分解，EVA的水汽透过率为10-30g/m 2·day，水汽易通过双玻高反组件的侧面进行渗透，EVA水解释放出醋酸，导致电池片被腐蚀，增加了电势诱导衰减(PID)和蜗牛纹发生的概率，降低双玻组件的使用寿命，因此有必要开发一种低透水性能的高反封装材料，延长太阳能双玻组件的发电周期。
发明内容
为了克服现有技术的不足，第一方面，本申请的第一个目的在于提供一种白色聚烯烃封装胶膜，该聚烯烃封装胶膜制造成本低、水汽阻隔性能高，可以用于太阳电池领域。
第二方面，本申请的第二个目的在于提供第一方面中的白色聚烯烃封装胶膜的制备方法，该方法工艺简单，操作简便，成本低。
本申请的第一个目的采用以下技术方案实现：
一种白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：
Figure PCTCN2017119303-appb-000001
进一步地，所述聚烯烃树脂A的熔融指数为3-30g/10min，熔点为60-115℃。
进一步地，所述聚烯烃树脂B的熔融指数为10-45g/10min，熔点为50-100℃。
进一步地，所述有机过氧化合物引发剂为碳过氧酸-O，O-(1，1-二甲基乙基)-O-(2-乙基己基)酯、叔丁基过氧化碳酸-2-乙基己酯、叔丁基过氧化2-乙基已基碳酸酯、叔丁过氧化碳酸-2-乙基己酯、叔丁基过氧基甲酸2-乙基已基酯、叔丁基过氧基甲酸2-乙基己基酯和叔丁基过氧化碳酸-2-乙基己酯中的一 种或任意组合。
进一步地，所述交联助剂为三烯丙基异氰脲酸酯、三烯丙基异三聚氰酸酯、1，3，5-三-2-丙烯基-1，3，5-三嗪-2，4，6(1H，3H，5H)-三酮、三烯丙基异氰酸酯、三异丙基异三聚氰酸酯、异氰脲酸三烯丙酯和异氰尿酸三烯丙酯中的一种或任意组合。
进一步地，所述增粘偶联剂为乙烯基三乙氧基硅烷、乙烯三乙氧基硅烷、三乙氧基乙烯硅烷、乙烯基三乙氧硅烷、(三乙氧基甲硅烷基)乙烯、三乙氧基乙烯基硅烷中的一种或任意组合。
进一步地，所述色母粒为钛白颜料和所述聚烯烃树脂A的混合物，经双螺杆熔融挤出拉条切粒而成；并且，所述钛白颜料的用量按重量计为40％-70％，所述聚烯烃树脂A的用量按重量计为30％-60％。
进一步地，所述钛白颜料包含二氧化钛和氧化铝，并且二氧化钛的含量按重量计大于96％，氧化铝的含量按重量计大于3％。
进一步地，所述光稳定剂为双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯；所述紫外光吸收剂为[2-羟基-4-(辛氧基)苯基]苯基酮。
本申请的第二个目的采用以下技术方案实现：
一种白色聚烯烃封装胶膜的制备方法，其包括以下步骤：将配方量的聚烯烃树脂A、聚烯烃树脂B、有机过氧化合物引发剂、交联助剂、增粘偶联剂、色母粒、光稳定剂和紫外光吸收剂经过混料釜混合均匀后，投入流延机中，经过塑化挤出、流延、牵引、收卷，即得所述白色聚烯烃封装胶膜。
相比现有技术，本申请的有益效果在于：
(1)本申请所提供的白色聚烯烃封装胶膜，其阻水性能好，能够有效降低水汽透过率，从而改善水汽对太阳电池双玻组件侧面的渗透作用，避免电池片 的腐蚀，有效的阻止了蜗牛纹的产生，起到了抗PID的作用，延长了双玻组件的使用寿命。
(2)本申请所提供的阻水性能好的白色聚烯烃封装胶膜，解决了现有常规白色高反EVA封装胶膜阻水性能低的缺陷。配方中加入了有机过氧化合物引发剂和交联助剂，发生化学交联的使聚烯烃变成交联三维网状结构，增大了分子量，同时分子链不易运动和扩散，从而使制成的太阳电池用白色聚烯烃封装胶膜的致密性好，孔隙率低，阻水性能优，大大提高了组件的使用寿命和发电周期。
(3)本申请所提供的阻水性能好的白色聚烯烃封装胶膜，具有优良的耐热氧老化和抗紫外性能，与常规白色高反EVA双玻组件相比，加入了光稳定剂和和紫外吸收剂的聚烯烃体系，交联反应产生的UV基团较少，并且能有效地猝灭在光、氧作用下产生的能引发降解的自由基，大大降低了双玻组件使用过程中出现的黄变和龟裂。
(4)本申请所提供的阻水性能好的白色聚烯烃封装胶膜的制备方法，工艺简单，操作简便，成本低。
附图说明
图1为本申请实施例1-7的白色聚烯烃封装胶膜水汽透过率柱状图；
图2为本申请实施例1-7的白色聚烯烃封装胶膜耐老化测试结果图。
具体实施方式
下面，结合附图以及具体实施方式，对本申请做进一步描述：
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成 分：聚烯烃树脂A100份；聚烯烃树脂B20-50份；有机过氧化合物引发剂0.6-2.0份；交联助剂0.5-2.5份；增粘偶联剂0.3-0.8份；色母粒15-25份；光稳定剂0.1-0.6份；紫外光吸收剂0.1-0.6份。
作为优选的方案，所述聚烯烃树脂A的熔融指数为3-30g/10min，熔点为60-115℃。
作为优选的方案，所述聚烯烃树脂B的熔融指数为10-45g/10min，熔点为50-100℃。
作为优选的方案，所述有机过氧化合物引发剂为碳过氧酸-O，O-(1，1-二甲基乙基)-O-(2-乙基己基)酯、叔丁基过氧化碳酸-2-乙基己酯、叔丁基过氧化2-乙基已基碳酸酯、叔丁过氧化碳酸-2-乙基己酯、叔丁基过氧基甲酸2-乙基已基酯、叔丁基过氧基甲酸2-乙基己基酯和叔丁基过氧化碳酸-2-乙基己酯中的一种或任意组合。
作为优选的方案，所述交联助剂为三烯丙基异氰脲酸酯、三烯丙基异三聚氰酸酯、1，3，5-三-2-丙烯基-1，3，5-三嗪-2，4，6(1H，3H，5H)-三酮、三烯丙基异氰酸酯、三异丙基异三聚氰酸酯、异氰脲酸三烯丙酯和异氰尿酸三烯丙酯中的一种或任意组合。
作为优选的方案，所述增粘偶联剂为乙烯基三乙氧基硅烷、乙烯三乙氧基硅烷、三乙氧基乙烯硅烷、乙烯基三乙氧硅烷、(三乙氧基甲硅烷基)乙烯、三乙氧基乙烯基硅烷中的一种或任意组合。
其中，(三乙氧基甲硅烷基)乙烯，又名乙烯基三乙氧基硅烷或三乙氧基乙烯基硅烷，分子量为190.32，CAS编号为78-08-0，它是一种无色透明液体，具有酯味。
作为优选的方案，所述色母粒为钛白颜料和所述聚烯烃树脂A的混合物， 经双螺杆熔融挤出拉条切粒而成；并且，所述钛白颜料的用量按重量计为40％-70％，所述聚烯烃树脂A的用量按重量计为30％-60％。
作为优选的方案，所述钛白颜料包含二氧化钛和氧化铝，并且二氧化钛的含量按重量计大于96％，氧化铝的含量按重量计大于3％。
作为优选的方案，所述光稳定剂为双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯；所述紫外光吸收剂为[2-羟基-4-(辛氧基)苯基]苯基酮。
一种阻水性能好的白色聚烯烃封装胶膜的制备方法，其包括以下步骤：将配方量的聚烯烃树脂A、聚烯烃树脂B、有机过氧化合物引发剂、交联助剂、增粘偶联剂、色母粒、光稳定剂和紫外光吸收剂经过混料釜混合均匀后，投入流延机中，经过塑化挤出、流延、牵引、收卷，即得。
实施例1
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为3g/10min、熔点为115℃的聚烯烃树脂A；20份熔融指数为10g/10min、熔点为100℃的聚烯烃树脂B；2.0份碳过氧酸-O，O-(1，1-二甲基乙基)-O-(2-乙基己基)酯、0.6份三烯丙基异氰脲酸酯、0.8份乙烯基三乙氧基硅烷、25份色母粒、0.4份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.6份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为40％的钛白粉和60％的聚烯烃A的混合物，它们经双螺杆熔融挤出拉条切粒而成。
实施例2
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为10g/10min、熔点为105℃的聚烯烃树脂A；25份熔融指数为15g/10min、熔点为90℃的聚烯烃树脂B；1.5份叔丁基过氧化碳酸-2-乙基己酯、0.8份三烯丙基异三聚氰酸酯、0.7份乙烯三乙氧基硅烷、22份色母粒、0.1份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.5份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为46％的钛白粉和54％的聚烯烃A的混合物，它们经双螺杆熔融挤出拉条切粒而成。
实施例3
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为15g/10min、熔点为95℃的聚烯烃树脂A；30份熔融指数为25g/10min、熔点为80℃的聚烯烃树脂B；1.2份叔丁基过氧化2-乙基已基碳酸酯、1.0份1，3，5-三-2-丙烯基-1，3，5-三嗪-2，4，6(1H，3H，5H)-三酮、0.6份三乙氧基乙烯硅烷、20份色母粒、0.3份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.4份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为52％的钛白粉和48％的聚烯烃A的混合物，它们经双螺 杆熔融挤出拉条切粒而成。
实施例4
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为20g/10min、熔点为80℃的聚烯烃树脂A；35份熔融指数为30g/10min、熔点为70℃的聚烯烃树脂B；1.0份叔丁过氧化碳酸-2-乙基己酯、1.5份三烯丙基异氰酸酯、0.5份乙烯基三乙氧硅烷、18份色母粒、0.2份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.2份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为58％的钛白粉和42％的聚烯烃A的混合物，它们经双螺杆熔融挤出拉条切粒而成。
实施例5
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为25g/10min、熔点为70℃的聚烯烃树脂A；45份熔融指数为35g/10min、熔点为60℃的聚烯烃树脂B；0.6份叔丁基过氧基甲酸2-乙基已基酯、2.5份三异丙基异三聚氰酸酯、0.3份(三乙氧基甲硅烷基)乙烯、15份色母粒、0.5份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.3份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为64％的钛白粉和36％的聚烯烃A的混合物，它们经双螺 杆熔融挤出拉条切粒而成。
实施例6
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为30g/10min、熔点为60℃的聚烯烃树脂A；50份熔融指数为45g/10min、熔点为50℃的聚烯烃树脂B；0.8份叔丁基过氧化碳酸-2-乙基己酯、2.0份异氰尿酸三烯丙酯、0.4份三乙氧基乙烯基硅烷、17份色母粒、0.6份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.1份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为70％的钛白粉和30％的聚烯烃A的混合物，它们经双螺杆熔融挤出拉条切粒而成。
实施例7
一种阻水性能好的白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：100份熔融指数为25g/10min、熔点为70℃的聚烯烃树脂A；55份熔融指数为50g/10min、熔点为45℃的聚烯烃树脂B；0.7份叔丁基过氧化碳酸-2-乙基己酯和叔丁基过氧化碳酸-2-乙基己酯的混合物、1.8份异氰尿酸三烯丙酯和三烯丙基异氰酸酯的混合物、0.3份三乙氧基乙烯基硅烷和乙烯基三乙氧基硅烷的混合物、19份色母粒、0.7份双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯、0.2份[2-羟基-4-(辛氧基)苯基]苯基酮，将上述组分经过混料釜混合均匀，投入流延机并设定好参数，经过塑化挤出、流延、牵引、收卷，制成白色高阻水 的太阳电池用聚烯烃封装胶膜。
其中，所述色母粒为73％的钛白粉和27％的聚烯烃A的混合物，它们经双螺杆熔融挤出拉条切粒而成。
测试例1-水汽透过率测试
对实施例1-7所获取的阻水性能好的白色聚烯烃封装胶膜进行水汽透过率测试。具体的测试方法和测试结果如下所述：
测试仪器：水汽透过率测定仪
测试原理：把试样固定在测试腔中间，将测试腔分上下两个腔，稳定的相对湿度的气体在薄膜的上腔流动，干燥的气体在薄膜的下腔流动，水分子透过试样扩散到另一侧的干燥气体中，被流动的气体携带至传感器，通过传感器测量到的水汽浓度进行分析，从而计算出水汽透过率。
技术参数：温度为25℃，下腔干燥空气的湿度为0％，上腔气体湿度为80％，样品厚度为1.5mm。
表1 实施例1-7的聚烯烃封装胶膜的水汽透过率测试结果
Figure PCTCN2017119303-appb-000002
测试例2-老化测试
对实施例1-7所获取的阻水性能好的白色聚烯烃封装胶膜进行老化测试。具体的测试方法和测试结果如下所述：
测试标准：根据GB/T 29848-2013的实验方法进行湿热和紫外老化测试；
湿热老化：温度85℃+2℃，相对湿度85％+2％，时间1000h后取出；
紫外老化：波长为280nm-400nm条件下辐照60KW·h/m 2。
表2 实施例1-7的白色聚烯烃封装胶膜的老化测试结果
Figure PCTCN2017119303-appb-000003
从表1-2的记录可得，本申请实施例所提供的白色聚烯烃封装胶膜，具有较低的水汽透过率和较高的耐老化性能，相较于白色EVA封装胶膜的10-30g/m 2·day的水汽透过率，实施例1-7的白色聚烯烃封装胶膜的水汽透过率仅为同类竞争产品的10％以内，能够大大地减少电势诱导衰减(PID)和蜗牛纹发生的概率。同时，优异的耐老化性能能够大大地延长太阳能双玻组件的发电周期和使用寿命，尤其在比较恶劣的环境中具有无法比拟的优势。
对本领域的技术人员来说，可根据以上描述的技术方案以及构思，做出其它各种相应的改变以及形变，而所有的这些改变以及形变都应该属于本申请权利要求的保护范围之内。

Claims (10)

  1. 一种白色聚烯烃封装胶膜，其包括按照重量份计的以下成分：
    Figure PCTCN2017119303-appb-100001
  2. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述聚烯烃树脂A的熔融指数为3-30g/10min，熔点为60-115℃。
  3. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述聚烯烃树脂B的熔融指数为10-45g/10min，熔点为50-100℃。
  4. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述有机过氧化合物引发剂为碳过氧酸-O，O-(1，1-二甲基乙基)-O-(2-乙基己基)酯、叔丁基过氧化碳酸-2-乙基己酯、叔丁基过氧化2-乙基己基碳酸酯、叔丁过氧化碳酸-2-乙基己酯、叔丁基过氧基甲酸2-乙基己基酯、叔丁基过氧基甲酸2-乙基己基酯和叔丁基过氧化碳酸-2-乙基己酯中的一种或任意组合。
  5. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述交联助剂为三烯丙基异氰脲酸酯、三烯丙基异三聚氰酸酯、1，3，5-三-2-丙烯基-1，3，5-三嗪-2，4，6(1H，3H，5H)-三酮、三烯丙基异氰酸酯、三异丙基异三聚氰酸酯、异氰脲酸三烯丙酯和异氰尿酸三烯丙酯中的一种或任意组合。
  6. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述增粘偶联剂为乙烯基三乙氧基硅烷、乙烯三乙氧基硅烷、三乙氧基乙烯硅烷、乙烯基三乙氧硅烷、(三乙氧基甲硅烷基)乙烯、三乙氧基乙烯基硅烷中的一种或任意组合。
  7. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述色母粒为钛白颜料和所述聚烯烃树脂A的混合物；并且，所述钛白颜料的用量按重量计为40％-70％，所述聚烯烃树脂A的用量按重量计为30％-60％。
  8. 根据权利要求7所述的白色聚烯烃封装胶膜，其中，所述钛白颜料包含二氧化钛和氧化铝，并且二氧化钛的含量按重量计大于96％，氧化铝的含量按重量计大于3％。
  9. 根据权利要求1所述的白色聚烯烃封装胶膜，其中，所述光稳定剂为双(2，2，6，6-四甲基-4-哌啶醇)葵二酸酯；所述紫外光吸收剂为[2-羟基-4-(辛氧基)苯基]苯基酮。
  10. 一种如权利要求1-9中任意一项所述的白色聚烯烃封装胶膜的制备方法，其包括以下步骤：将配方量的聚烯烃树脂A、聚烯烃树脂B、有机过氧化合物引发剂、交联助剂、增粘偶联剂、色母粒、光稳定剂和紫外光吸收剂经过混料釜混合均匀后，投入流延机中，经过塑化挤出、流延、牵引、收卷，即得所述白色聚烯烃封装胶膜。
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