CN114525105A - Two-component organic silicon pouring sealant for photovoltaic junction box and preparation method thereof - Google Patents
Two-component organic silicon pouring sealant for photovoltaic junction box and preparation method thereof Download PDFInfo
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- CN114525105A CN114525105A CN202111305287.5A CN202111305287A CN114525105A CN 114525105 A CN114525105 A CN 114525105A CN 202111305287 A CN202111305287 A CN 202111305287A CN 114525105 A CN114525105 A CN 114525105A
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- 239000000565 sealant Substances 0.000 title claims abstract description 84
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 title claims abstract description 44
- 229910052710 silicon Inorganic materials 0.000 title claims abstract description 44
- 239000010703 silicon Substances 0.000 title claims abstract description 44
- 238000002360 preparation method Methods 0.000 title claims abstract description 40
- 238000002156 mixing Methods 0.000 claims abstract description 101
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 77
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 64
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 64
- 239000000945 filler Substances 0.000 claims abstract description 60
- 239000003381 stabilizer Substances 0.000 claims abstract description 35
- 239000004526 silane-modified polyether Substances 0.000 claims abstract description 29
- 239000003054 catalyst Substances 0.000 claims abstract description 10
- 239000007822 coupling agent Substances 0.000 claims abstract description 8
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 8
- 239000004014 plasticizer Substances 0.000 claims abstract description 8
- 239000011259 mixed solution Substances 0.000 claims description 36
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 22
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 20
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 20
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 11
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 11
- WNROFYMDJYEPJX-UHFFFAOYSA-K aluminium hydroxide Chemical compound [OH-].[OH-].[OH-].[Al+3] WNROFYMDJYEPJX-UHFFFAOYSA-K 0.000 claims description 11
- 239000012299 nitrogen atmosphere Substances 0.000 claims description 11
- 229920000570 polyether Polymers 0.000 claims description 11
- 239000004408 titanium dioxide Substances 0.000 claims description 11
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 claims description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000012948 isocyanate Substances 0.000 claims description 6
- 238000003756 stirring Methods 0.000 claims description 6
- LFQCEHFDDXELDD-UHFFFAOYSA-N tetramethyl orthosilicate Chemical compound CO[Si](OC)(OC)OC LFQCEHFDDXELDD-UHFFFAOYSA-N 0.000 claims description 6
- HQYALQRYBUJWDH-UHFFFAOYSA-N trimethoxy(propyl)silane Chemical compound CCC[Si](OC)(OC)OC HQYALQRYBUJWDH-UHFFFAOYSA-N 0.000 claims description 6
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 5
- FMGBDYLOANULLW-UHFFFAOYSA-N 3-isocyanatopropyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)CCCN=C=O FMGBDYLOANULLW-UHFFFAOYSA-N 0.000 claims description 5
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims description 4
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 4
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 4
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 claims description 4
- 229920001296 polysiloxane Polymers 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 3
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical compound [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 2
- BOTDANWDWHJENH-UHFFFAOYSA-N Tetraethyl orthosilicate Chemical compound CCO[Si](OCC)(OCC)OCC BOTDANWDWHJENH-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- XQBCVRSTVUHIGH-UHFFFAOYSA-L [dodecanoyloxy(dioctyl)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCCCCCC)(CCCCCCCC)OC(=O)CCCCCCCCCCC XQBCVRSTVUHIGH-UHFFFAOYSA-L 0.000 claims description 2
- 239000003963 antioxidant agent Substances 0.000 claims description 2
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 2
- ZQKXQUJXLSSJCH-UHFFFAOYSA-N melamine cyanurate Chemical compound NC1=NC(N)=NC(N)=N1.O=C1NC(=O)NC(=O)N1 ZQKXQUJXLSSJCH-UHFFFAOYSA-N 0.000 claims description 2
- 239000000377 silicon dioxide Substances 0.000 claims description 2
- ZQZCOBSUOFHDEE-UHFFFAOYSA-N tetrapropyl silicate Chemical compound CCCO[Si](OCCC)(OCCC)OCCC ZQZCOBSUOFHDEE-UHFFFAOYSA-N 0.000 claims description 2
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 2
- CPUDPFPXCZDNGI-UHFFFAOYSA-N triethoxy(methyl)silane Chemical compound CCO[Si](C)(OCC)OCC CPUDPFPXCZDNGI-UHFFFAOYSA-N 0.000 claims description 2
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 2
- 239000011787 zinc oxide Substances 0.000 claims description 2
- 235000012239 silicon dioxide Nutrition 0.000 claims 1
- 239000000203 mixture Substances 0.000 abstract description 8
- 230000001070 adhesive effect Effects 0.000 abstract description 3
- 238000004382 potting Methods 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 239000003795 chemical substances by application Substances 0.000 description 12
- 239000000084 colloidal system Substances 0.000 description 10
- SSDSCDGVMJFTEQ-UHFFFAOYSA-N octadecyl 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoate Chemical group CCCCCCCCCCCCCCCCCCOC(=O)CCC1=CC(C(C)(C)C)=C(O)C(C(C)(C)C)=C1 SSDSCDGVMJFTEQ-UHFFFAOYSA-N 0.000 description 9
- 238000004078 waterproofing Methods 0.000 description 9
- 230000000052 comparative effect Effects 0.000 description 7
- NCWQJOGVLLNWEO-UHFFFAOYSA-N methylsilicon Chemical compound [Si]C NCWQJOGVLLNWEO-UHFFFAOYSA-N 0.000 description 7
- 239000003921 oil Substances 0.000 description 7
- 239000007787 solid Substances 0.000 description 7
- 238000000034 method Methods 0.000 description 6
- 239000012530 fluid Substances 0.000 description 5
- 239000007788 liquid Substances 0.000 description 5
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 description 3
- 230000000704 physical effect Effects 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 238000005336 cracking Methods 0.000 description 2
- 239000013078 crystal Substances 0.000 description 2
- 239000000843 powder Substances 0.000 description 2
- 239000004590 silicone sealant Substances 0.000 description 2
- MTEZSDOQASFMDI-UHFFFAOYSA-N 1-trimethoxysilylpropan-1-ol Chemical compound CCC(O)[Si](OC)(OC)OC MTEZSDOQASFMDI-UHFFFAOYSA-N 0.000 description 1
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 1
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- ARGICNMLPHJXTP-UHFFFAOYSA-N [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].C(=C)C(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O ARGICNMLPHJXTP-UHFFFAOYSA-N 0.000 description 1
- OUGKFJZADGTJRG-UHFFFAOYSA-N [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O OUGKFJZADGTJRG-UHFFFAOYSA-N 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 125000003545 alkoxy group Chemical group 0.000 description 1
- 239000012752 auxiliary agent Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000002041 carbon nanotube Substances 0.000 description 1
- 229910021393 carbon nanotube Inorganic materials 0.000 description 1
- 239000007809 chemical reaction catalyst Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 229910021485 fumed silica Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000036314 physical performance Effects 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000002940 repellent Effects 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000004576 sand Substances 0.000 description 1
- 229910000077 silane Inorganic materials 0.000 description 1
- 239000008247 solid mixture Substances 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- 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
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- 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
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular additives
-
- 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
- C09J171/00—Adhesives based on polyethers obtained by reactions forming an ether link in the main chain; Adhesives based on derivatives of such polymers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2227—Oxides; Hydroxides of metals of aluminium
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08L2203/206—Applications use in electrical or conductive gadgets use in coating or encapsulating of electronic parts
-
- 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
-
- 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
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Compositions Of Macromolecular Compounds (AREA)
Abstract
The invention relates to an organic silicon pouring sealant, and discloses a two-component organic silicon pouring sealant for a photovoltaic junction box and a preparation method thereof, wherein the two-component organic silicon pouring sealant comprises a component A and a component B, wherein the component A comprises alpha, omega-dihydroxy polydimethylsiloxane, a filler, a plasticizer and a stabilizer in parts by weight; the component B comprises silane modified polyether, a cross-linking agent, a coupling agent and a catalyst; the preparation method comprises the following steps: fully mixing high-viscosity alpha, omega-dihydroxy polydimethylsiloxane with a filler; fully mixing the medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the plasticizer and the stabilizer; finally, mixing the two mixtures to prepare a component A; fully mixing silane modified polyether, a cross-linking agent, a coupling agent and a catalyst according to a proportion to prepare a component B; mixing the component A and the component B to prepare organic silicon pouring sealant; the organic silicon potting adhesive prepared by the invention has the advantages of short curing time, high temperature resistance, high humidity resistance and other weather resistance, and high insulativity, heat conductivity and flame retardance.
Description
Technical Field
The invention relates to an organic silicon pouring sealant, in particular to a two-component organic silicon pouring sealant for a photovoltaic junction box and a preparation method thereof.
Background
The photovoltaic junction box is a connector used for connecting the solar silicon crystal panel and a solar control system, plays a role in transmitting current generated by the solar silicon crystal panel to a connecting device of an external system, and is an important photovoltaic module; the photovoltaic junction box is often installed in adverse environments such as high temperature, high humidity, high illumination, salt fog, sand wind and the like, and is very easy to corrode, so in order to prolong the service life of the photovoltaic junction box, the electronic elements in the junction box are often sealed by using pouring sealant so as to increase the oxidation resistance, impact resistance and weather resistance of the junction box, and meanwhile, the electronic elements can generate larger heat when being used, so that the insulation property, thermal conductivity and flame resistance of the potting sealant are also important performance indexes when being used.
In the prior art, a lot of pouring sealants for photovoltaic junction boxes exist, such as publication No. CN102181264B, which discloses a high-performance silicone sealant for photovoltaic modules, and the weight of the components of the high-performance silicone sealant for photovoltaic modules is as follows: 100 parts of alpha, omega-dihydroxy polydimethylsiloxane, 50-200 parts of ultrafine reinforcing powder, 10-100 parts of functional powder auxiliary agent, 3-8 parts of methyl tributyrinoxime silane, 1-4 parts of vinyl tributyrinoxime silane, 1-3 parts of tetrabutoximino silane, 5-20 parts of fumed silica, 0.2-3 parts of 3-aminopropyltriethoxysilane, 0.2-4 parts of gamma-glycidyl ether oxypropyltrimethoxysilane and 0.05-0.5 part of organosilicon condensation type reaction catalyst, and the organosilicon sealant has good comprehensive performance and can prolong the service life of solar products; and as disclosed in publication No. CN201510216593.X, a solvent-free silicone potting adhesive is disclosed, wherein the used heat-conducting filler contains graphite powder, carbon nanotubes and other electric-conducting materials, and the heat conductivity of the heat-conducting filler reaches 1.2W/mk.
The curing performance of the pouring sealant for the photovoltaic junction box is a technical index which is focused on by users in the using process, the pouring sealant which is commonly used at present comprises a single-component pouring sealant and a double-component pouring sealant, but the curing depth of the single-component sealant is small, the curing thickness is not more than 6mm, the curing depth of the double-component pouring sealant is large, but the requirements on the curing time and the curing temperature are also high, so that the double-component organic silicon pouring sealant for the photovoltaic junction box without filler and with high weather resistance needs to be provided.
Disclosure of Invention
The invention aims to solve the problem of low curing performance of the pouring sealant for the photovoltaic junction box in the prior art, and provides the two-component organic silicon pouring sealant for the photovoltaic junction box, which has the effects of obviously reducing curing time, obviously enhancing high temperature resistance and high humidity resistance of colloid and obviously increasing the weather resistance of the pouring sealant by adding silane modified polyether into the components; the solid filler is fully dispersed in the colloid by a method of mixing alpha, omega-dihydroxy polydimethylsiloxane with medium viscosity and high viscosity, and the problems of cracking and reduction of physical properties of the colloid after curing caused by uneven mixing of the solid filler are prevented.
In order to achieve the purpose, the invention adopts the following technical scheme:
the two-component organic silicon pouring sealant for the photovoltaic junction box is characterized by comprising a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of a plasticizer and 0.1-1 part by mass of a stabilizer; the component B comprises, by mass, 20-50 parts of silane modified polyether, 30-60 parts of a crosslinking agent, 2-10 parts of a coupling agent and 0.05-1 part of a catalyst.
According to the invention, the silane modified polyether is added in the two-component silane coupling agent, so that the curing performance of the pouring sealant is obviously improved; the silane modified polyether is poly-alkoxy terminated polyether, the 3-isocyanate propyl trimethoxy silane is reacted with hydroxyl terminated polyether, amino is introduced on the polyether, the polyether can rapidly react with an organic component and an inorganic component, the curing time of colloid is accelerated, the adhesive property with the inorganic component is facilitated when the terminal box is sealed by the colloid, the silane modified polyether can also enhance the high temperature resistance and the high humidity resistance of the colloid, and the weather resistance of the pouring sealant can be obviously enhanced after the silane modified polyether is added into the pouring sealant.
Preferably, the alpha, omega-dihydroxy polydimethylsiloxane comprises 10-20 parts by mass of medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane and 20-40 parts by mass of high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, wherein the viscosity of the medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane is 1000-5000cp, and the viscosity of the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane is 5000-20000 cp.
Preferably, the filler is selected from one or more of silica, calcium carbonate, alumina, aluminum hydroxide, zinc oxide, melamine cyanurate, and titanium dioxide.
Preferably, the plasticizer is methyl silicone oil.
Preferably, the stabilizer is selected from one or both of antioxidants 1076 and uv 326.
Preferably, the silane modified polyether is low viscosity polyalkoxy terminated polyether, and the preparation steps are as follows:
stirring 100 parts by weight of 3-isocyanate propyl trimethoxy silane at high speed to prepare dealcoholized 3-isocyanate propyl trimethoxy silane, and stirring for 1 hour at the stirring temperature of 115 ℃; then, uniformly mixing 130 parts by mass of hydroxyl-terminated polyether and dealcoholized 3-isocyanatopropyl trimethoxy silane, and reacting for 2.5 hours after mixing to obtain the high-activity silane modified polyether.
Preferably, the cross-linking agent is one or more of methyl orthosilicate, ethyl orthosilicate, propyl orthosilicate, polyethyl silicate, methyltrimethoxysilane, methyltriethoxysilane and polymethyltriethoxysilane (3# water repellent).
Preferably, the coupling agent is selected from one or more of gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
Preferably, the catalyst is selected from one or more of dibutyltin dilaurate, dioctyltin dilaurate, stannous octoate and tin chelates.
The invention also provides a preparation method of the double-component organic silicon pouring sealant for the photovoltaic junction box, which is characterized by comprising the following steps of:
(1) preparation of a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare the mixed filler with the medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the plasticizer and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1-1.5 h, and the mixing pressure is-0.05-0.08 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, a cross-linking agent and a coupling agent according to a ratio to prepare a mixed solution, wherein the mixing time is 0.5-1 h, then slowly dripping a catalyst into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20-40 min after the dripping of the catalyst is finished to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
In the preparation process, the invention adopts a method of mixing alpha, omega-dihydroxy polydimethylsiloxane with medium viscosity and high viscosity to fully disperse the solid filler in the component A, thereby preventing the problems of fracture and reduction of physical properties of the solidified colloid caused by uneven mixing of the solid filler; firstly, mixing high-viscosity alpha, omega-dihydroxy polydimethylsiloxane and solid filler to prepare mixed filler, then mixing medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane and other liquids to prepare high-viscosity mixed liquid, and finally mixing the two mixtures; the solid mixture and the medium-viscosity liquid are easier to be fully and uniformly mixed, and the controllability and the energy consumption are high and low during mixing; meanwhile, the viscosity of the liquid is reduced along with the reduction of the temperature, the temperature of the medium-viscosity mixture is high, the temperature of the high-viscosity mixture is low, after the two are mixed, the heat transfer can occur at the liquid surface contact point of the high-viscosity mixture and the low-viscosity mixture, so that the viscosity of the contact position of the high-viscosity fluid and the low-viscosity fluid tends to be in a balanced state, the internal stress between the two fluids is reduced, and the two fluids with different viscosities can be rapidly mixed.
Therefore, the invention has the following beneficial effects:
(1) by adding the silane modified polyether into the components, the curing time is obviously shortened, the high temperature resistance and high humidity resistance of the colloid are obviously enhanced, and the weather resistance of the pouring sealant is obviously improved;
(2) the method for mixing the alpha, omega-dihydroxy polydimethylsiloxane with medium and high viscosities can fully disperse the solid filler in the colloid, prevent the problems of cracking and physical property reduction of the solidified colloid caused by uneven mixing of the solid filler, reduce the internal stress between two fluids with medium and high viscosities during mixing, and is more favorable for rapid mixing.
Detailed Description
The invention is further described below with reference to specific embodiments.
In the present invention, all the raw materials are commercially available or commonly used in the art, and the methods in the following examples are conventional in the art unless otherwise specified.
Example 1:
a two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the alpha, omega-dihydroxy polydimethylsiloxane is 1000cp of medium viscosity alpha, omega-dihydroxy polydimethylsiloxane, 20000cp of high viscosity alpha, omega-dihydroxy polydimethylsiloxane (the mass ratio is 3: 1), the filler is aluminum hydroxide, alumina and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of methyl orthosilicate, 2-10 parts by mass of gamma-aminopropyl trimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare the mixed filler with the medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the methyl silicone oil and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, methyl orthosilicate and gamma-aminopropyltriethoxysilane according to a proportion to prepare a mixed solution, wherein the mixing time is 0.5h, slowly dropwise adding dibutyltin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20min after dropwise adding is finished to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Example 2:
a two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of methyl silicone oil and 0.1-1 part by mass of a stabilizer, the alpha, omega-dihydroxy polydimethylsiloxane is 2000cp medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, 8000cp high-viscosity alpha, omega-dihydroxy polydimethylsiloxane (the mass ratio is 3: 1), the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of methyltrimethoxysilane, 2-10 parts by mass of N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare the mixed filler with the medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the methyl silicone oil and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, methyltrimethoxysilane and N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane according to the proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyl tin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20min after dropwise adding is finished to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Example 3:
a two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the alpha, omega-dihydroxy polydimethylsiloxane is 1500cp medium-viscosity alpha and omega-dihydroxy polydimethylsiloxane, the 5000cp high-viscosity alpha, omega-dihydroxy polydimethylsiloxane (the mass ratio is 3: 1), the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of methyl orthosilicate, 2-10 parts by mass of 1146 and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparing a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare the mixed filler with the medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the methyl silicone oil and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, methyl orthosilicate and 1146 according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyltin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20min after dropwise adding to obtain a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Example 4:
a two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the alpha, omega-dihydroxy polydimethylsiloxane is 6000cp medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, 20000cp high-viscosity alpha, omega-dihydroxy polydimethylsiloxane (the mass ratio is 3: 1), the filler is aluminum hydroxide, alumina and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of 3# waterproofing agent, 2-10 parts by mass of gamma-aminopropyltrimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare the mixed filler with the medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the methyl silicone oil and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1 hour, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, 3# waterproofing agent and gamma-aminopropyltriethoxysilane according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyl tin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting for 20min under a pressure of-0.06 MPa after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Example 5:
a two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the alpha, omega-dihydroxy polydimethylsiloxane is 1500cp medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, 6000cp high-viscosity alpha, omega-dihydroxy polydimethylsiloxane (the mass ratio is 3: 1), the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of 3# waterproofing agent, 2-10 parts by mass of gamma-aminopropyltrimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing the alpha, omega-dihydroxy polydimethylsiloxane with the filler according to the proportion to prepare a mixed filler with medium viscosity; then fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the methyl silicone oil and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, 3# waterproofing agent and gamma-aminopropyltrimethoxysilane according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyl tin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20min after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and (3) fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Comparative example 1: (polyether is not added)
A two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 30-60 parts by mass of a 3# waterproof agent, 40-70 parts by mass of gamma-aminopropyltrimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing alpha, omega-dihydroxy polydimethylsiloxane, filler, methyl silicone oil and stabilizer according to a proportion to prepare a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing 3-isocyanatopropyl trimethoxy silane, 3# waterproofing agent and 1145 according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyltin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting for 20min in vacuum after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Comparative example 2: (unmodified polyether)
A two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of a stabilizer, the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts of hydroxyl-terminated polyether, 30-60 parts of 3# waterproof agent, 2-10 parts of gamma-aminopropyl trimethoxy silane and 0.05-1 part of dibutyl tin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing alpha, omega-dihydroxy polydimethylsiloxane, filler, methyl silicone oil and stabilizer according to a proportion to prepare a component A, wherein the mixing time is 1h, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing 3-isocyanatopropyl trimethoxy silane, 3# waterproofing agent and 1145 according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyltin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting for 20min in vacuum after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Comparative example 3: (Medium viscosity single blend)
A two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of high-viscosity alpha, omega-dihydroxy polydimethylsiloxane (viscosity is 20000cp), 20-50 parts by mass of filler, 1-10 parts by mass of oil of methyl silicon and 0.1-1 part by mass of stabilizer, the filler comprises aluminum hydroxide, aluminum oxide and titanium dioxide (mass ratio is 2: 6: 1), and the stabilizer comprises an antioxidant 1076 and uv326 (mass ratio is 9: 1); the component B comprises 20-50 parts of 3-isocyanate propyl trimethoxy silane, 30-60 parts of 3# waterproof agent, 2-10 parts of gamma-aminopropyl trimethoxy silane and 0.05-1 part of dibutyl tin dilaurate in parts by mass.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, filler, methyl silicone oil and stabilizer according to a proportion to prepare a component A, wherein the mixing time is 1 hour, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing 3-isocyanatopropyl trimethoxy silane, 3# waterproofing agent and 1145 according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyltin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting for 20min in vacuum after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
Comparative example 4: (high viscosity single blend)
A two-component organic silicon pouring sealant for a photovoltaic junction box comprises a component A and a component B, wherein the component A comprises 30-60 parts by mass of medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane (the viscosity is 1500cp), 20-50 parts by mass of a filler, 1-10 parts by mass of methyl silicone oil and 0.1-1 part by mass of a stabilizer, the filler is aluminum hydroxide, aluminum oxide and titanium dioxide (the mass ratio is 2: 6: 1), and the stabilizer is an antioxidant 1076 and uv326 (the mass ratio is 9: 1); the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of 3# waterproofing agent, 2-10 parts by mass of gamma-aminopropyltrimethoxysilane and 0.05-1 part by mass of dibutyltin dilaurate.
A preparation method of a two-component organic silicon pouring sealant for a photovoltaic junction box comprises the following steps:
(1) preparation of a component A: fully mixing the medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the filler, the methyl silicone oil and the stabilizer according to the proportion to prepare a component A, wherein the mixing time is 1 hour, and the mixing pressure is-0.05 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, 3# waterproofing agent and gamma-aminopropyltrimethoxysilane according to a proportion to prepare a mixed solution, mixing for 0.5h, then slowly dropwise adding dibutyl tin dilaurate into the mixed solution in a nitrogen atmosphere, and reacting in vacuum for 20min after dropwise adding to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
The organic pouring sealant is prepared by fully and uniformly mixing the above examples and comparative examples through a static mixer, and the performance is tested, and the test results are shown in the following table.
The result shows that the performance of the organic silicon pouring sealant is better, the flame retardant performance reaches V-0 grade, the heat conductivity coefficient is better, and the physical performance is high, in addition, the curing time is within 60min, the shortest curing temperature is 43min in the embodiment 3, the curing time is 80min in the comparative example, and the surface of the organic silicon pouring sealant slightly cracks under the high-temperature high-humidity environment, which indicates that the curing performance of the organic silicon pouring sealant is enhanced, the curing time is reduced, the moisture resistance and the high-temperature resistance of the organic silicon pouring sealant are enhanced, and the weather resistance of the organic silicon pouring sealant is obviously improved by adding silane modified polyether and adopting an alpha, omega-dihydroxy polydimethylsiloxane high-low viscosity mixing method, and the performances of the pouring sealants of the comparative examples 1, 2, 3 and 4 are lower than those of the examples.
Claims (9)
1. The two-component organic silicon pouring sealant for the photovoltaic junction box is characterized by comprising a component A and a component B, wherein the component A comprises 30-60 parts by mass of alpha, omega-dihydroxy polydimethylsiloxane, 20-50 parts by mass of a filler, 1-10 parts by mass of a plasticizer and 0.1-1 part by mass of a stabilizer; the component B comprises 20-50 parts by mass of silane modified polyether, 30-60 parts by mass of cross-linking agent, 2-10 parts by mass of coupling agent and 0.05-1 part by mass of catalyst, wherein the alpha, omega-dihydroxy polydimethylsiloxane comprises 10-20 parts by mass of medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane and 20-40 parts by mass of high-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the viscosity of the medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane is 1000-5000cp, and the viscosity of the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane is 5000-20000 cp.
2. The two-component organic silicon pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the filler is selected from one or more of silicon dioxide, calcium carbonate, aluminum oxide, aluminum hydroxide, zinc oxide, melamine cyanurate and titanium dioxide.
3. The two-component silicone pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the plasticizer is methyl silicone oil.
4. The two-component silicone pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the stabilizer is one or two selected from antioxidants 1076 and uv 326.
5. The two-component organic silicon pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the silane modified polyether is a low-viscosity polyalkoxy terminated polyether, and the preparation steps are as follows:
stirring 100 parts by weight of 3-isocyanate propyl trimethoxy silane at high speed to prepare dealcoholized 3-isocyanate propyl trimethoxy silane, and stirring for 1 hour at the stirring temperature of 115 ℃; then, 130 parts by weight of hydroxyl-terminated polyether and dealcoholized 3-isocyanatopropyl trimethoxy silane are uniformly mixed and react for 2.5 hours to prepare the high-activity silane modified polyether.
6. The two-component organic silicon pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the cross-linking agent is one or more of methyl orthosilicate, ethyl orthosilicate, propyl orthosilicate, polyethyl silicate, methyltrimethoxysilane, methyltriethoxysilane and polymethyltriethoxysilane.
7. The two-component organic silicon pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the coupling agent is one or more selected from gamma-aminopropyltrimethoxysilane, gamma-aminopropyltriethoxysilane, N-beta-aminoethyl-gamma-aminopropyltrimethoxysilane and gamma-glycidoxypropyltrimethoxysilane.
8. The two-component silicone pouring sealant for the photovoltaic junction box as claimed in claim 1, wherein the catalyst is one or more selected from dibutyltin dilaurate, dioctyltin dilaurate, stannous octoate and chelated tin.
9. The preparation method of the two-component organic silicon pouring sealant for the photovoltaic junction box as claimed in any one of claims 1 to 8, which is characterized by comprising the following steps:
(1) preparation of a component A: fully mixing the high-viscosity alpha, omega-dihydroxy polydimethylsiloxane and the filler according to the proportion to prepare a medium-viscosity mixed filler; then fully mixing the medium-viscosity alpha, omega-dihydroxy polydimethylsiloxane, the plasticizer and the stabilizer to prepare a high-viscosity mixed solution; then slowly adding the medium-viscosity filler into the high-viscosity mixed solution, and fully mixing to obtain a component A, wherein the mixing time is 1-1.5 h, and the mixing pressure is-0.05-0.08 MPa;
(2) b, preparation of a component: fully mixing silane modified polyether, a cross-linking agent and a coupling agent according to a ratio to prepare a mixed solution, wherein the mixing time is 0.5-1 h, then slowly dropwise adding a catalyst into the mixed solution in a nitrogen atmosphere, and reacting for 20-40 min under the pressure of-0.06-0.08 MPa after the dropwise adding of the catalyst is finished to prepare a component B;
(3) preparing an organic pouring sealant: and fully and uniformly mixing the component A and the component B to prepare the organic pouring sealant.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144316A (en) * | 2022-12-22 | 2023-05-23 | 道生天合材料科技(上海)股份有限公司 | Condensed type organic silicon pouring sealant and preparation method thereof |
| CN116285771A (en) * | 2022-12-22 | 2023-06-23 | 隆基绿能科技股份有限公司 | Heat conduction filler and preparation method thereof, pouring sealant and preparation method thereof, junction box and photovoltaic module |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768421A (en) * | 2010-01-29 | 2010-07-07 | 陈世龙 | Dual-component silicone sealant for solar photovoltaic components and preparation method thereof |
| CN102304345A (en) * | 2011-08-25 | 2012-01-04 | 文仁光 | Composition of double-component organosilicon photovoltaic component sealant, and preparation method thereof |
| CN102516927A (en) * | 2011-12-20 | 2012-06-27 | 江苏明昊新材料科技有限公司 | Two-component casting glue for capsulation of solar photovoltaic module and preparation method thereof |
| CN102977840A (en) * | 2012-12-31 | 2013-03-20 | 上海回天化工新材料有限公司 | Two-component silicone sealant for solar module resisting damp, heat and ageing and preparation method thereof |
| CN103305182A (en) * | 2013-07-10 | 2013-09-18 | 上海回天化工新材料有限公司 | Condensed type double-component RTV pouring sealant for solar module |
-
2021
- 2021-11-05 CN CN202111305287.5A patent/CN114525105A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101768421A (en) * | 2010-01-29 | 2010-07-07 | 陈世龙 | Dual-component silicone sealant for solar photovoltaic components and preparation method thereof |
| CN102304345A (en) * | 2011-08-25 | 2012-01-04 | 文仁光 | Composition of double-component organosilicon photovoltaic component sealant, and preparation method thereof |
| CN102516927A (en) * | 2011-12-20 | 2012-06-27 | 江苏明昊新材料科技有限公司 | Two-component casting glue for capsulation of solar photovoltaic module and preparation method thereof |
| CN102977840A (en) * | 2012-12-31 | 2013-03-20 | 上海回天化工新材料有限公司 | Two-component silicone sealant for solar module resisting damp, heat and ageing and preparation method thereof |
| CN103305182A (en) * | 2013-07-10 | 2013-09-18 | 上海回天化工新材料有限公司 | Condensed type double-component RTV pouring sealant for solar module |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116144316A (en) * | 2022-12-22 | 2023-05-23 | 道生天合材料科技(上海)股份有限公司 | Condensed type organic silicon pouring sealant and preparation method thereof |
| CN116285771A (en) * | 2022-12-22 | 2023-06-23 | 隆基绿能科技股份有限公司 | Heat conduction filler and preparation method thereof, pouring sealant and preparation method thereof, junction box and photovoltaic module |
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Application publication date: 20220524 |