CN116426242B - Single-component room temperature vulcanization dealcoholized photovoltaic frame sealant - Google Patents
Single-component room temperature vulcanization dealcoholized photovoltaic frame sealant Download PDFInfo
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- CN116426242B CN116426242B CN202310415724.1A CN202310415724A CN116426242B CN 116426242 B CN116426242 B CN 116426242B CN 202310415724 A CN202310415724 A CN 202310415724A CN 116426242 B CN116426242 B CN 116426242B
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- calcium carbonate
- kaolin
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- 239000000565 sealant Substances 0.000 title claims abstract description 53
- 238000004073 vulcanization Methods 0.000 title claims abstract description 13
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 103
- 239000000945 filler Substances 0.000 claims abstract description 55
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 51
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 32
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 32
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 32
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 28
- 125000001449 isopropyl group Chemical group [H]C([H])([H])C([H])(*)C([H])([H])[H] 0.000 claims abstract description 28
- 125000004423 acyloxy group Chemical group 0.000 claims abstract description 26
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 23
- 230000001070 adhesive effect Effects 0.000 claims abstract description 22
- 239000007822 coupling agent Substances 0.000 claims abstract description 19
- 239000004945 silicone rubber Substances 0.000 claims abstract description 18
- 239000003054 catalyst Substances 0.000 claims abstract description 16
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 16
- 239000004014 plasticizer Substances 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 238000002360 preparation method Methods 0.000 claims description 46
- 238000003756 stirring Methods 0.000 claims description 37
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 claims description 16
- 239000002245 particle Substances 0.000 claims description 13
- 239000011259 mixed solution Substances 0.000 claims description 12
- 239000012043 crude product Substances 0.000 claims description 11
- 238000001035 drying Methods 0.000 claims description 10
- 239000000853 adhesive Substances 0.000 claims description 8
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 7
- 239000004205 dimethyl polysiloxane Substances 0.000 claims description 7
- 229920001971 elastomer Polymers 0.000 claims description 7
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims description 7
- 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 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 claims description 6
- 239000000203 mixture Substances 0.000 claims description 6
- -1 polydimethylsiloxane Polymers 0.000 claims description 6
- 238000001816 cooling Methods 0.000 claims description 5
- 238000002156 mixing Methods 0.000 claims description 5
- 238000000967 suction filtration Methods 0.000 claims description 5
- 238000005406 washing Methods 0.000 claims description 5
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 claims description 3
- AMTWCFIAVKBGOD-UHFFFAOYSA-N dioxosilane;methoxy-dimethyl-trimethylsilyloxysilane Chemical compound O=[Si]=O.CO[Si](C)(C)O[Si](C)(C)C AMTWCFIAVKBGOD-UHFFFAOYSA-N 0.000 claims description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 2
- 239000007788 liquid Substances 0.000 claims description 2
- 229940083037 simethicone Drugs 0.000 claims description 2
- 238000000034 method Methods 0.000 abstract description 9
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 abstract description 6
- 239000000741 silica gel Substances 0.000 abstract description 6
- 229910002027 silica gel Inorganic materials 0.000 abstract description 6
- 230000009286 beneficial effect Effects 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 4
- 230000000052 comparative effect Effects 0.000 description 11
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 6
- 235000013870 dimethyl polysiloxane Nutrition 0.000 description 6
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 4
- 239000006185 dispersion Substances 0.000 description 4
- 230000003014 reinforcing effect Effects 0.000 description 4
- 229920002545 silicone oil Polymers 0.000 description 4
- 238000006243 chemical reaction Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 229920006267 polyester film Polymers 0.000 description 3
- 239000000243 solution Substances 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000005054 agglomeration Methods 0.000 description 2
- 230000002776 aggregation Effects 0.000 description 2
- 230000002349 favourable effect Effects 0.000 description 2
- 238000007731 hot pressing Methods 0.000 description 2
- 238000007719 peel strength test Methods 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- CBENFWSGALASAD-UHFFFAOYSA-N Ozone Chemical compound [O-][O+]=O CBENFWSGALASAD-UHFFFAOYSA-N 0.000 description 1
- 239000000919 ceramic Substances 0.000 description 1
- 229940008099 dimethicone Drugs 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000000499 gel Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- XNGIFLGASWRNHJ-UHFFFAOYSA-L phthalate(2-) Chemical compound [O-]C(=O)C1=CC=CC=C1C([O-])=O XNGIFLGASWRNHJ-UHFFFAOYSA-L 0.000 description 1
- 239000007858 starting material Substances 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
- 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
- C08K3/24—Acids; Salts thereof
- C08K3/26—Carbonates; Bicarbonates
- C08K2003/265—Calcium, strontium or barium carbonate
-
- 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
- C08K2201/00—Specific properties of additives
- C08K2201/011—Nanostructured additives
-
- 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
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Sealing Material Composition (AREA)
Abstract
The application relates to the technical field of dealcoholized silica gel, and collectively discloses a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant. The single-component room temperature vulcanization dealcoholized photovoltaic frame sealant comprises the following raw materials in parts by weight: 80-120 parts of silicone rubber, 10-30 parts of plasticizer, 5-15 parts of cross-linking agent, 1-5 parts of coupling agent, 0.1-1 part of catalyst and 50-150 parts of modified filler; the raw materials of the modified filler comprise calcium carbonate, kaolin and isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate. In the method, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is used for modifying calcium carbonate and kaolin, and the modified calcium carbonate and kaolin are grafted on the surfaces of the calcium carbonate and the kaolin, so that the calcium carbonate and the kaolin are uniformly dispersed in the silicon rubber; the addition of the kaolin is beneficial to improving the joint faults caused by alkaline substances in the raw materials, thereby improving the adhesive property of the prepared sealant.
Description
Technical Field
The application relates to the technical field of dealcoholized silica gel, in particular to a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant.
Background
The dealcoholized silica gel has simple use, good cementing tightness to metal, glass, ceramic and the like, and also has excellent ozone resistance, corona discharge resistance, oxygen atom resistance, insulation, water resistance and moisture resistance. When preparing dealcoholized silica gel, calcium carbonate is added into the raw materials, so that the function of filling gel can be achieved, and the cost can be saved, but the surface energy of the calcium carbonate is very high, and particles are easy to agglomerate, so that the adhesive property of the dealcoholized silica gel is affected.
Disclosure of Invention
In order to improve the adhesive property of the dealcoholized silica gel, the application provides a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant.
The application provides a single-component room temperature vulcanization dealcoholization photovoltaic frame sealant which adopts the following technical scheme:
the single-component room temperature vulcanization dealcoholized photovoltaic frame sealant comprises the following raw materials in parts by weight: 80-120 parts of silicon rubber, 10-30 parts of plasticizer, 5-15 parts of cross-linking agent, 1-5 parts of coupling agent, 0.1-1 part of catalyst and 50-150 parts of modified filler; the raw materials of the modified filler comprise calcium carbonate, kaolin and isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate.
By adopting the technical scheme, the filler is modified by using the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is grafted on the surface of the filler, the filler is coated, the acting force between the surfaces of the filler is reduced, and therefore, the dispersibility of the filler is improved, and the filler is uniformly dispersed in the silicon rubber; the filler is a mixture of calcium carbonate and kaolin, which is favorable for improving contact faults caused by alkaline substances in raw materials, thereby improving the adhesive property of the prepared sealant.
In a specific embodiment, the weight ratio of the calcium carbonate, the kaolin, the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1: (0.05-0.1): (0.03-0.05).
By adopting the technical scheme, the proportion of calcium carbonate, kaolin and isopropyl dioleoyl (dioctyl phosphate acyloxy) titanate is further limited, and the dispersion performance of the prepared modified filler is further improved.
In a specific embodiment, the method of preparing the modified filler comprises the steps of:
adding isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into cyclohexanone, and uniformly stirring to obtain a mixed solution; and (3) drying the calcium carbonate and the kaolin, adding the dried calcium carbonate and the kaolin into the mixed solution, stirring and reacting at 80-90 ℃ for 65-75min to obtain a modified liquid, carrying out suction filtration to obtain a crude product, washing and drying to obtain the modified filler.
By adopting the technical scheme, the modified filler with better dispersion performance is prepared by using the method.
In a specific embodiment, the calcium carbonate has a particle size of 30-50nm.
By adopting the technical scheme, when the particle size of the calcium carbonate is smaller, the agglomeration phenomenon is easy to occur in the silicon rubber, when the particle size of the calcium carbonate is larger, the specific surface area of the calcium carbonate is smaller, and after the calcium carbonate is added into the silicon rubber, the reinforcing effect on a system is poorer; the particle size of the calcium carbonate is 30-50nm, so that the calcium carbonate has a good dispersing effect, has a good reinforcing effect on a system, and is beneficial to improving the bonding strength of the prepared sealant.
In a specific embodiment, the cross-linking agent comprises one or a mixture of methyltrimethoxysilane and vinyltrimethoxysilane.
In a specific embodiment, the coupling agent comprises one or more of gamma-aminopropyl trimethoxysilane, vinyl triethoxysilane, N- (2-aminoethyl) -3-aminopropyl trimethoxysilane.
In a specific embodiment, the catalyst comprises dibutyl tin dilaurate.
In a specific embodiment, the silicone rubber comprises an alpha, omega-dihydroxy polydimethylsiloxane.
In a specific embodiment, the plasticizer comprises dimethicone.
In a specific embodiment, the method for preparing the sealant comprises the following steps:
uniformly stirring and mixing silicone rubber, a plasticizer and a modified filler, stirring and dehydrating for 2-4 hours under the vacuum degree of 130-170 ℃ and (-0.09) - (-0.1) MPa, and then cooling to 40-30 ℃ to obtain base rubber;
adding a cross-linking agent into the base adhesive, stirring for 50-70min under the vacuum degree of (-0.095) - (-0.1) MPa, adding a coupling agent and a catalyst, and stirring for 30-60min under the vacuum degree of (-0.09) - (-0.1) MPa to obtain the sealant.
By adopting the technical scheme, the sealant with stronger bonding performance is prepared by using the method.
In summary, the present application includes at least one of the following beneficial technical effects:
1. in the method, the filler is modified by using isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is grafted on the surface of the filler, the filler is coated, the acting force between the surfaces of the filler is reduced, and therefore the dispersibility of the filler is improved, and the filler is uniformly dispersed in the silicone rubber; the filler is a mixture of calcium carbonate and kaolin, which is favorable for improving contact faults caused by alkaline substances in raw materials, so that the adhesive property of the prepared sealant is improved;
2. the particle size of the calcium carbonate is limited to be 30-50nm, so that the calcium carbonate has a good dispersing effect, has a good reinforcing effect on a system, and is beneficial to improving the bonding strength of the prepared sealant;
3. in the application, the silicone rubber, the plasticizer and the modified filler are stirred and mixed uniformly, and stirred and dehydrated to obtain the base rubber; and adding a cross-linking agent, a coupling agent and a catalyst into the base adhesive, and stirring for reaction to obtain the sealant with strong bonding performance.
Detailed Description
The present application is described in further detail below with reference to examples.
All the starting materials in the examples are commercially available. Wherein the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is provided by Jie chemical technology Co., ltd, guangzhou, and has the model number of phthalate 311; simethicone CAS No.: 63148-62-9.
Preparation example
Preparation example 1
Preparation example 1 provides a preparation method of modified filler, which comprises the following steps:
adding isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into cyclohexanone, and uniformly stirring to obtain a mixed solution; drying calcium carbonate and kaolin at 100 ℃ for 1.5 hours, then adding the dried calcium carbonate and kaolin into the mixed solution, stirring the mixed solution at 85 ℃ for reaction for 70 minutes to obtain a modified solution, carrying out suction filtration to obtain a crude product, washing the crude product with acetone, and drying the crude product at 80 ℃ to obtain a modified filler; wherein the particle size of the calcium carbonate is 30-50nm; the weight ratio of the calcium carbonate to the kaolin to the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.03:0.02; the weight ratio of cyclohexanone to calcium carbonate is 5:1.
preparation example 2
Preparation example 2 differs from preparation example 1 in that the weight ratio of calcium carbonate, kaolin, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.05:0.03; the remaining steps are identical to those of preparation 1.
Preparation example 3
Preparation example 3 differs from preparation example 1 in that the weight ratio of calcium carbonate, kaolin, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.07:0.04; the remaining steps are identical to those of preparation 1.
Preparation example 4
Preparation example 4 differs from preparation example 1 in that the weight ratio of calcium carbonate, kaolin, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.1:0.05; the remaining steps are identical to those of preparation 1.
Preparation example 5
Preparation example 5 differs from preparation example 1 in that the weight ratio of calcium carbonate, kaolin, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.12:0.06; the remaining steps are identical to those of preparation 1.
Preparation example 6
Preparation example 6 differs from preparation example 3 in that the particle size of calcium carbonate is 10 to 30nm; the remaining steps are identical to those of preparation 3.
Preparation example 7
Preparation example 7 differs from preparation example 3 in that the particle size of calcium carbonate is 50-70nm; the remaining steps are identical to those of preparation 3.
Preparation example 8
Preparation example 8 provides a preparation method of the modified filler, which comprises the following steps:
adding isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into cyclohexanone, and uniformly stirring to obtain a mixed solution; drying calcium carbonate at 100 ℃ for 1.5 hours, then adding the calcium carbonate into the mixed solution, stirring the mixed solution at 85 ℃ for reaction for 70 minutes to obtain a modified solution, carrying out suction filtration to obtain a crude product, washing the crude product with acetone, and drying the crude product at 80 ℃ to obtain a modified filler; wherein the particle size of the calcium carbonate is 30-50nm; the weight ratio of the calcium carbonate to the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.02; the weight ratio of cyclohexanone to calcium carbonate is 5:1.
preparation example 9
Preparation example 9 provides a preparation method of the modified filler, which comprises the following steps:
adding isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into cyclohexanone, and uniformly stirring to obtain a mixed solution; drying kaolin at 100 ℃ for 1.5 hours, then adding the kaolin into the mixed solution, stirring and reacting for 70 minutes at 85 ℃ to obtain a modified solution, carrying out suction filtration to obtain a crude product, washing the crude product with acetone, and drying the crude product at 80 ℃ to obtain a modified filler; the weight ratio of kaolin to isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1:0.02; the weight ratio of cyclohexanone to kaolin is 5:1.
examples
Example 1
The embodiment 1 provides a preparation method of a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant, which comprises the following steps:
adding 80kg of silicone rubber, 10kg of plasticizer and 50kg of modified filler in preparation example 1 into a vacuum stirring kettle, stirring and uniformly mixing, stirring and dehydrating for 3 hours at 150 ℃ and a vacuum degree of-0.095 MPa, and then cooling to 35 ℃ to obtain base rubber;
adding 5kg of cross-linking agent into the base adhesive, stirring for 60min at the vacuum degree of-0.098 MPa, adding 1kg of coupling agent and 0.1kg of catalyst, and stirring for 45min at the vacuum degree of-0.095 MPa to obtain the sealant; wherein the silicone rubber is alpha, omega-dihydroxy polydimethylsiloxane; the plasticizer is dimethyl silicone oil; the cross-linking agent is methyltrimethoxysilane; the coupling agent is gamma-aminopropyl trimethoxy silane; the catalyst is dibutyl tin dilaurate.
Examples 2 to 7
Examples 2-7 differ from example 1 in that the modified filler was not used and are detailed in Table 1.
TABLE 1 selection of modified fillers for examples 1-7
Example 8
Embodiment 8 provides a preparation method of a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant, which comprises the following steps:
adding 100kg of silicone rubber, 20kg of plasticizer and 100kg of modified filler in preparation example 3 into a vacuum stirring kettle, stirring and uniformly mixing, stirring and dehydrating for 3 hours at 150 ℃ and a vacuum degree of-0.095 MPa, and then cooling to 35 ℃ to obtain base rubber;
adding 10kg of cross-linking agent into the base adhesive, stirring for 60min at the vacuum degree of-0.098 MPa, adding 3kg of coupling agent and 0.5kg of catalyst, and stirring for 45min at the vacuum degree of-0.095 MPa to obtain the sealant; wherein the silicone rubber is alpha, omega-dihydroxy polydimethylsiloxane; the plasticizer is dimethyl silicone oil; the cross-linking agent is methyltrimethoxysilane; the coupling agent is gamma-aminopropyl trimethoxy silane; the catalyst is dibutyl tin dilaurate.
Example 9
Embodiment 9 provides a preparation method of a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant, which comprises the following steps:
120kg of silicone rubber, 30kg of plasticizer and 150kg of modified filler in preparation example 3 are added into a vacuum stirring kettle, stirred and mixed uniformly, stirred and dehydrated for 3 hours at 150 ℃ and a vacuum degree of minus 0.095MPa, and then cooled to 35 ℃ to obtain base rubber;
adding 15kg of cross-linking agent into the base adhesive, stirring for 60min at the vacuum degree of-0.098 MPa, adding 5kg of coupling agent and 1kg of catalyst, and stirring for 45min at the vacuum degree of-0.095 MPa to obtain the sealant; wherein the silicone rubber is alpha, omega-dihydroxy polydimethylsiloxane; the plasticizer is dimethyl silicone oil; the cross-linking agent is methyltrimethoxysilane; the coupling agent is gamma-aminopropyl trimethoxy silane; the catalyst is dibutyl tin dilaurate.
Example 10
Example 10 differs from example 8 in that the coupling agent is vinyltriethoxysilane, the remainder of the procedure being in accordance with example 8.
Example 11
Example 11 differs from example 8 in that the coupling agent is N- (2-aminoethyl) -3-aminopropyl trimethoxysilane and the remaining steps are identical to example 8.
Comparative example
Comparative example 1
Comparative example 1 provides a method for preparing a single-component room temperature vulcanization dealcoholized photovoltaic frame sealant, comprising the following steps:
adding 80kg of silicone rubber, 10kg of plasticizer and 50kg of filler into a vacuum stirring kettle, stirring and uniformly mixing, stirring and dehydrating for 3 hours at 150 ℃ and a vacuum degree of-0.095 MPa, and then cooling to 35 ℃ to obtain base rubber; wherein the filler is a mixture of calcium carbonate and kaolin, and the weight ratio of the calcium carbonate to the kaolin is 1:0.03;
adding 5kg of cross-linking agent into the base adhesive, stirring for 60min at the vacuum degree of-0.098 MPa, adding 1kg of coupling agent and 0.1kg of catalyst, and stirring for 45min at the vacuum degree of-0.095 MPa to obtain the sealant; wherein the silicone rubber is alpha, omega-dihydroxy polydimethylsiloxane; the plasticizer is dimethyl silicone oil; the cross-linking agent is methyltrimethoxysilane; the coupling agent is gamma-aminopropyl trimethoxy silane; the catalyst is dibutyl tin dilaurate.
Comparative example 2
Comparative example 2 differs from example 1 in that the modified filler of preparation 8 was used as the modified filler, and the remaining steps were identical to those of example 1.
Comparative example 3
Comparative example 3 differs from example 1 in that the modified filler of preparation 9 was used as the modified filler, and the remaining steps were identical to those of example 1.
Performance test peel strength: the sealant in each example and comparative example was coated on a PET polyester film according to GB/T2791-1995 adhesive T peel strength test method, and then was bonded with another PET polyester film by hot pressing at 200℃and a glue layer thickness of 10 μm, the PET polyester film thickness was 0.1mm, the hot pressing time of an electric iron was 5 seconds, and after bonding, a test strip of 2.5cm width was cut for T-type peel strength test, the tensile speed was 50 mm/min, and T-type peel strength was measured; the greater the peel strength, the higher the tack.
Table 2 results of performance test of sealants
In combination with example 1 and comparative example 1, the adhesive property of the sealant in example 1 is far higher than that of comparative example 1, and it can be seen that in the preparation of the sealant, the filler is modified by using isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, and isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is grafted on the surface of the filler to coat the filler, so that the dispersibility of the filler is improved, the filler is uniformly dispersed in the silicone rubber, and therefore, the adhesive property of the prepared sealant is improved.
In combination with examples 1 and comparative examples 1-2, the sealant of example 1 had the best adhesion, and it can be seen that the filler was a mixture of calcium carbonate and kaolin to give a sealant having better adhesion.
In combination with examples 1-5, the sealants of examples 2-4 have better adhesion properties, and it can be seen that when the filler is modified with isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate, the ratio of calcium carbonate, kaolin, isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is preferably 1: (0.05-0.1): (0.03-0.05), the prepared modified filler has better dispersion performance, thereby improving the adhesive property of the prepared sealant.
In combination with examples 3, 6 and 7, the sealant of example 3 has the best adhesion, and it can be seen that when the particle size of the selected calcium carbonate is small in the preparation of the modified filler, the dispersion performance in the silicone rubber is poor and the agglomeration phenomenon is easy to occur; when the grain diameter of the selected calcium carbonate is larger, the specific surface area of the calcium carbonate is smaller, the reinforcing effect on the system is poorer, and the adhesive property of the prepared sealant can be influenced; in the embodiment 3, calcium carbonate with the particle size of 30-50nm is selected, and the prepared sealant has better adhesive property.
In combination with examples 3, 8 and 9, the adhesive property of the sealant in example 8 is best, and it can be seen that when the sealant is prepared, the adhesive property of the prepared sealant tends to be improved and then reduced by increasing the amount of raw materials.
In combination with examples 8, 10 and 11, the sealant in example 8 has the best adhesive property, and it can be seen that when the sealant is prepared, the coupling agent is gamma-aminopropyl trimethoxy silane, and the prepared sealant has better adhesive property.
The present embodiment is merely illustrative of the present application and is not intended to be limiting, and those skilled in the art, after having read the present specification, may make modifications to the present embodiment without creative contribution as required, but is protected by patent laws within the scope of the claims of the present application.
Claims (7)
1. A single-component room temperature vulcanization dealcoholization photovoltaic frame sealant is characterized in that: the sealant comprises the following raw materials in parts by weight: 80-120 parts of silicone rubber, 10-30 parts of plasticizer, 5-15 parts of cross-linking agent, 1-5 parts of coupling agent, 0.1-1 part of catalyst and 50-150 parts of modified filler; the raw materials of the modified filler comprise calcium carbonate, kaolin and isopropyl dioleoyl (dioctyl phosphate acyloxy) titanate; the weight ratio of the calcium carbonate to the kaolin to the isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate is 1: (0.05-0.1): (0.03-0.05); the particle size of the calcium carbonate is 30-50nm;
the preparation method of the modified filler comprises the following steps:
adding isopropyl dioleate acyloxy (dioctyl phosphate acyloxy) titanate into cyclohexanone, and uniformly stirring to obtain a mixed solution; and (3) drying the calcium carbonate and the kaolin, adding the dried calcium carbonate and the kaolin into the mixed solution, stirring and reacting at 80-90 ℃ for 65-75min to obtain a modified liquid, carrying out suction filtration to obtain a crude product, washing and drying to obtain the modified filler.
2. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to claim 1, wherein: the cross-linking agent comprises one or a mixture of methyl trimethoxy silane and vinyl trimethoxy silane.
3. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to claim 1, wherein: the coupling agent comprises one or more of gamma-aminopropyl trimethoxysilane, vinyl triethoxysilane and N- (2-aminoethyl) -3-aminopropyl trimethoxysilane.
4. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to claim 1, wherein: the catalyst comprises dibutyl tin dilaurate.
5. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to claim 1, wherein: the silicone rubber comprises alpha, omega-dihydroxy polydimethylsiloxane.
6. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to claim 1, wherein: the plasticizer comprises simethicone.
7. The single-component room temperature vulcanizing dealcoholized photovoltaic frame sealant according to any one of claims 1 to 6, wherein: the preparation method of the sealant comprises the following steps:
uniformly stirring and mixing silicone rubber, a plasticizer and a modified filler, stirring and dehydrating for 2-4 hours under the vacuum degree of 130-170 ℃ (-0.09) - (-0.1) MPa, and then cooling to 30-40 ℃ to obtain base rubber;
adding a cross-linking agent into the base adhesive, stirring for 50-70min under the vacuum degree of (-0.095) - (-0.1) MPa, adding a coupling agent and a catalyst, and stirring for 30-60min under the vacuum degree of (-0.09) - (-0.1) MPa to obtain the sealant.
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| CN202310415724.1A CN116426242B (en) | 2023-04-18 | 2023-04-18 | Single-component room temperature vulcanization dealcoholized photovoltaic frame sealant |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281631A (en) * | 2004-03-31 | 2005-10-13 | Aica Kogyo Co Ltd | Adhesive composition |
| CN105062407A (en) * | 2015-09-09 | 2015-11-18 | 蓝星（成都）新材料有限公司 | Low-viscosity organosilicon sealant for LED (light-emitting diode) potting and preparation method thereof |
| CN105713394A (en) * | 2016-03-02 | 2016-06-29 | 广东杰果新材料有限公司 | High-viscosity single-component oxime removing type silicone rubber capable of being stored stably and preparation method thereof |
| CN114196371A (en) * | 2021-11-30 | 2022-03-18 | 广州市白云化工实业有限公司 | Dealcoholized silicone structure sealant |
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- 2023-04-18 CN CN202310415724.1A patent/CN116426242B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005281631A (en) * | 2004-03-31 | 2005-10-13 | Aica Kogyo Co Ltd | Adhesive composition |
| CN105062407A (en) * | 2015-09-09 | 2015-11-18 | 蓝星（成都）新材料有限公司 | Low-viscosity organosilicon sealant for LED (light-emitting diode) potting and preparation method thereof |
| CN105713394A (en) * | 2016-03-02 | 2016-06-29 | 广东杰果新材料有限公司 | High-viscosity single-component oxime removing type silicone rubber capable of being stored stably and preparation method thereof |
| CN114196371A (en) * | 2021-11-30 | 2022-03-18 | 广州市白云化工实业有限公司 | Dealcoholized silicone structure sealant |
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