CN115124922B - Primer and preparation method and application thereof - Google Patents
Primer and preparation method and application thereof Download PDFInfo
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- CN115124922B CN115124922B CN202210801072.0A CN202210801072A CN115124922B CN 115124922 B CN115124922 B CN 115124922B CN 202210801072 A CN202210801072 A CN 202210801072A CN 115124922 B CN115124922 B CN 115124922B
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- Prior art keywords
- silicone rubber
- primer
- vinyl
- catalyst
- rubber frame
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 claims abstract description 132
- 229920002379 silicone rubber Polymers 0.000 claims abstract description 75
- 239000003054 catalyst Substances 0.000 claims abstract description 70
- 239000004945 silicone rubber Substances 0.000 claims abstract description 64
- 239000002904 solvent Substances 0.000 claims abstract description 59
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 37
- 239000004964 aerogel Substances 0.000 claims abstract description 35
- 229920002799 BoPET Polymers 0.000 claims abstract description 28
- 239000003822 epoxy resin Substances 0.000 claims abstract description 27
- 229920000647 polyepoxide Polymers 0.000 claims abstract description 27
- 239000006087 Silane Coupling Agent Substances 0.000 claims abstract description 24
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims abstract description 21
- 229920002554 vinyl polymer Polymers 0.000 claims abstract description 19
- FZHAPNGMFPVSLP-UHFFFAOYSA-N silanamine Chemical compound [SiH3]N FZHAPNGMFPVSLP-UHFFFAOYSA-N 0.000 claims abstract description 18
- UKRDPEFKFJNXQM-UHFFFAOYSA-N vinylsilane Chemical compound [SiH3]C=C UKRDPEFKFJNXQM-UHFFFAOYSA-N 0.000 claims abstract description 18
- 238000000034 method Methods 0.000 claims abstract description 17
- 238000002156 mixing Methods 0.000 claims abstract description 16
- 239000002994 raw material Substances 0.000 claims abstract description 15
- 239000007822 coupling agent Substances 0.000 claims abstract description 12
- 238000006243 chemical reaction Methods 0.000 claims abstract description 8
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical group [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 60
- 229910052697 platinum Inorganic materials 0.000 claims description 30
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 22
- 238000007731 hot pressing Methods 0.000 claims description 21
- 150000001555 benzenes Chemical class 0.000 claims description 13
- 239000000203 mixture Substances 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 10
- OMPJBNCRMGITSC-UHFFFAOYSA-N Benzoylperoxide Chemical compound C=1C=CC=CC=1C(=O)OOC(=O)C1=CC=CC=C1 OMPJBNCRMGITSC-UHFFFAOYSA-N 0.000 claims description 7
- 235000019400 benzoyl peroxide Nutrition 0.000 claims description 7
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 6
- 238000000576 coating method Methods 0.000 claims description 6
- 229920001187 thermosetting polymer Polymers 0.000 claims description 5
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 4
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 4
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical group CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 4
- 239000008096 xylene Substances 0.000 claims description 4
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 3
- 239000007787 solid Substances 0.000 claims description 3
- 230000002457 bidirectional effect Effects 0.000 claims description 2
- 229920000642 polymer Polymers 0.000 abstract description 2
- 239000003566 sealing material Substances 0.000 abstract description 2
- 229920005862 polyol Polymers 0.000 description 27
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 25
- 239000012948 isocyanate Substances 0.000 description 24
- 150000002513 isocyanates Chemical class 0.000 description 24
- 150000003077 polyols Chemical class 0.000 description 24
- CTKINSOISVBQLD-VKHMYHEASA-N (S)-Glycidol Chemical compound OC[C@H]1CO1 CTKINSOISVBQLD-VKHMYHEASA-N 0.000 description 20
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 16
- 239000000047 product Substances 0.000 description 11
- HIHIPCDUFKZOSL-UHFFFAOYSA-N ethenyl(methyl)silicon Chemical compound C[Si]C=C HIHIPCDUFKZOSL-UHFFFAOYSA-N 0.000 description 10
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 8
- -1 and has low density Substances 0.000 description 7
- AANMVENRNJYEMK-UHFFFAOYSA-N 4-propan-2-ylcyclohex-2-en-1-one Chemical compound CC(C)C1CCC(=O)C=C1 AANMVENRNJYEMK-UHFFFAOYSA-N 0.000 description 6
- 229920001971 elastomer Polymers 0.000 description 6
- 238000005538 encapsulation Methods 0.000 description 6
- 150000003384 small molecules Chemical class 0.000 description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 5
- OMIGHNLMNHATMP-UHFFFAOYSA-N 2-hydroxyethyl prop-2-enoate Chemical compound OCCOC(=O)C=C OMIGHNLMNHATMP-UHFFFAOYSA-N 0.000 description 3
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 description 3
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 239000012975 dibutyltin dilaurate Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 238000004806 packaging method and process Methods 0.000 description 3
- NDWUBGAGUCISDV-UHFFFAOYSA-N 4-hydroxybutyl prop-2-enoate Chemical compound OCCCCOC(=O)C=C NDWUBGAGUCISDV-UHFFFAOYSA-N 0.000 description 2
- 239000004593 Epoxy Substances 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 description 2
- 239000000853 adhesive Substances 0.000 description 2
- 230000001070 adhesive effect Effects 0.000 description 2
- RJGHQTVXGKYATR-UHFFFAOYSA-L dibutyl(dichloro)stannane Chemical compound CCCC[Sn](Cl)(Cl)CCCC RJGHQTVXGKYATR-UHFFFAOYSA-L 0.000 description 2
- 239000012467 final product Substances 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000012774 insulation material Substances 0.000 description 2
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical group CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 229920002545 silicone oil Polymers 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 125000003944 tolyl group Chemical group 0.000 description 2
- QXJQHYBHAIHNGG-UHFFFAOYSA-N trimethylolethane Chemical compound OCC(C)(CO)CO QXJQHYBHAIHNGG-UHFFFAOYSA-N 0.000 description 2
- 230000006978 adaptation Effects 0.000 description 1
- 238000007718 adhesive strength test Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000003139 buffering effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 125000003055 glycidyl group Chemical group C(C1CO1)* 0.000 description 1
- 229920006280 packaging film Polymers 0.000 description 1
- 239000012785 packaging film Substances 0.000 description 1
- 229920000139 polyethylene terephthalate Polymers 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 238000004321 preservation Methods 0.000 description 1
- 238000010008 shearing Methods 0.000 description 1
- 230000003068 static effect Effects 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D183/00—Coating compositions 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; Coating compositions based on derivatives of such polymers
- C09D183/04—Polysiloxanes
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/06—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material
- B32B27/065—Layered products comprising a layer of synthetic resin as the main or only constituent of a layer, which is next to another layer of the same or of a different material of foam
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B27/00—Layered products comprising a layer of synthetic resin
- B32B27/36—Layered products comprising a layer of synthetic resin comprising polyesters
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B32—LAYERED PRODUCTS
- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B3/00—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form
- B32B3/02—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions
- B32B3/08—Layered products comprising a layer with external or internal discontinuities or unevennesses, or a layer of non-planar shape; Layered products comprising a layer having particular features of form characterised by features of form at particular places, e.g. in edge regions characterised by added members at particular parts
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/18—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by features of a layer of foamed material
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
- B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
- B32B5/32—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed at least two layers being foamed and next to each other
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/671—Unsaturated compounds having only one group containing active hydrogen
- C08G18/672—Esters of acrylic or alkyl acrylic acid having only one group containing active hydrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G59/00—Polycondensates containing more than one epoxy group per molecule; Macromolecules obtained by polymerising compounds containing more than one epoxy group per molecule using curing agents or catalysts which react with the epoxy groups
- C08G59/14—Polycondensates modified by chemical after-treatment
- C08G59/1433—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds
- C08G59/1477—Polycondensates modified by chemical after-treatment with organic low-molecular-weight compounds containing nitrogen
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/042—Coating with two or more layers, where at least one layer of a composition contains a polymer binder
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J7/00—Chemical treatment or coating of shaped articles made of macromolecular substances
- C08J7/04—Coating
- C08J7/043—Improving the adhesiveness of the coatings per se, e.g. forming primers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C09D175/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/002—Priming paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/63—Additives non-macromolecular organic
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- B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
- B32B2266/00—Composition of foam
- B32B2266/12—Gel
- B32B2266/126—Aerogel, i.e. a supercritically dried gel
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2383/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2383/04—Polysiloxanes
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2475/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2475/04—Polyurethanes
- C08J2475/14—Polyurethanes having carbon-to-carbon unsaturated bonds
- C08J2475/16—Polyurethanes having carbon-to-carbon unsaturated bonds having terminal carbon-to-carbon unsaturated bonds
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2483/00—Characterised by the use of 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; Derivatives of such polymers
- C08J2483/04—Polysiloxanes
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- 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
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- Health & Medical Sciences (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- General Chemical & Material Sciences (AREA)
- Paints Or Removers (AREA)
Abstract
The invention belongs to the technical field of high polymer sealing materials, and discloses a primer and a preparation method and application thereof. Method (1): (1) preparing raw materials according to the total of 100 parts by weight: 6-12 parts of vinyl silicone rubber, 0.1-1 part of vinyl silane coupling agent, 0.1-1 part of amino silane coupling agent, 0.3-1 part of vulcanizing agent, 1-6 parts of epoxy resin, 0.1-0.2 part of catalyst and the balance of benzene solvent; (2) Mixing an aminosilane coupling agent, epoxy resin and part of benzene solvent at 50-100 ℃ for reaction for 1-3h; (3) And (3) adding the rest raw materials into the product obtained in the step (2) at normal temperature to prepare the primer. Method (2): the primer is prepared by uniformly mixing 3-20 parts of vinyl silicone rubber, 0.3-1 part of vulcanizing agent, 3-20 parts of compatilizer, 0.1-0.5 part of No. 2 catalyst and the balance of benzene solvent at normal temperature according to the total of 100 parts by mass. The primer prepared by the invention can form good adhesion between the silicone rubber on the aerogel film felt and the PET film.
Description
Technical Field
The invention belongs to the technical field of high polymer sealing materials, and particularly relates to a primer and a preparation method and application thereof.
Background
Aerogel is an emerging heat insulation material at present, has extremely low heat conductivity coefficient which is far lower than that of static air at normal temperature by 0.25W/m.K, has heat insulation and heat preservation effects which are incomparable with other materials, and has low density, water resistance, flame retardance, corrosion resistance and long service life, and is called super heat insulation and heat insulation material. At present, the method is widely applied to the fields of new energy, construction, petrochemical industry and the like.
In the new energy automobile field, single aerogel felt is difficult to satisfy the in-service use in battery field, often needs to set up the rubber frame around aerogel felt, and the rubber frame itself compresses the resilience better, and the electricity core is heated and can cause certain inflation effect in the use, appears the condition of swelling, and the rubber frame just can bear certain pressure this moment, plays the effect of buffering. Therefore, when preparing aerogel blanket insulation products for use in the battery field, a rubber frame needs to be disposed in the surrounding area of the aerogel blanket prior to encapsulation. At this time, however, the situation that the PET packaging film on the surface of the aerogel felt product is difficult to bond with the rubber frame on the periphery of the aerogel felt can occur, so that the packaging of the prepared aerogel felt product is not firm, the rubber frame and the PET film are easy to delaminate, and the use of the aerogel felt product is affected.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide a primer and a preparation method and application thereof.
In order to achieve the above purpose, the invention provides two preparation methods of primer, which concretely comprises the following steps:
the preparation method (1) comprises the following preparation steps:
(1) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 6-12 parts of vinyl silicone rubber, 0.1-1 part of vinyl silane coupling agent, 0.1-1 part of amino silane coupling agent, 0.3-1 part of vulcanizing agent, 1-6 parts of epoxy resin, 0.1-0.2 part of catalyst and the balance of benzene solvent; the catalyst is a platinum catalyst, and the benzene series solvent is one or a mixture of toluene and xylene;
(2) Mixing an aminosilane coupling agent, epoxy resin and part of benzene solvent at 50-100 ℃ for reaction for 1-3h; the dosage of the part of benzene series solvent accounts for 40% -90% of the total amount of the benzene series solvent;
(3) And (2) adding vinyl silicone rubber, a vinyl silane coupling agent, a vulcanizing agent, a catalyst and residual benzene solvent into the product obtained in the step (2) at normal temperature, and mixing to obtain the primer.
Preferably, the vinyl silicone rubber is a solid silicone rubber containing vinyl groups.
Preferably, the vinyl silane coupling agent is vinyl trimethoxy silane or vinyl triethoxy silane; the aminosilane coupling agent is one or a mixture of two of 3-aminopropyl trimethoxy silane and 3-aminopropyl triethoxy silane; the epoxy resin is one or a mixture of two of E20 and E44; the vulcanizing agent is one of dibenzoyl peroxide vulcanizing agent and bis-tetra vulcanizing agent.
The preparation method (2) comprises the following preparation steps:
(1) Preparing a compatilizer: removing free water in the small molecular polyol, then reacting the small molecular polyol with isocyanate at 50-80 ℃ for 1-5 hours, cooling and keeping the temperature to 50-60 ℃ after the reaction is finished, adding a No. 1 benzene solvent, then adding a No. 1 catalyst, adding (S) -glycidol and small molecular unsaturated monohydric alcohol, and continuously reacting for 1-5 hours at 50-60 ℃ to prepare a compatilizer; wherein the mole ratio of the sum of the hydroxyl groups in the small molecular polyol, (S) -glycidol and the small molecular unsaturated monohydric alcohol to the isocyanate groups in the isocyanate is 1:1, and the mole ratio of the hydroxyl groups in the small molecular polyol and the isocyanate groups in the isocyanate is 1:2-2.5, and the mole ratio of the hydroxyl groups in the (S) -glycidol and the hydroxyl groups in the small molecular unsaturated monohydric alcohol is 1:0.5-2; the addition amount of the 1# benzene series solvent is 50-95% of the sum of the mass of the dehydrated micromolecular polyol, isocyanate, (S) -glycidol and the mass of the micromolecular unsaturated monohydric alcohol; the catalyst 1 is dibutyl tin dilaurate or dibutyl tin dichloride, and the addition amount of the catalyst 1 is one to five parts per million of the mass sum of dehydrated micromolecular polyol, isocyanate, benzene solvent 1, (S) -glycidol and micromolecular unsaturated monohydric alcohol;
(2) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 3-20 parts of vinyl silicone rubber, 0.3-1 part of vulcanizing agent, 3-20 parts of compatilizer, 0.1-0.5 part of No. 2 catalyst and the balance of No. 2 benzene solvent; uniformly mixing all the raw materials at normal temperature to prepare a primer; wherein the No. 2 catalyst is a platinum catalyst;
the 1# benzene solvent and the 2# benzene solvent in the step (1) and the step (2) are mixed by one or two of toluene and xylene.
Preferably, the vinyl silicone rubber is a solid silicone rubber containing vinyl groups.
Preferably, the vulcanizing agent is one of dibenzoyl peroxide vulcanizing agent and bis-di-tetra vulcanizing agent; the small molecular polyalcohol is trimethylol propane or trimethylol ethane; the isocyanate is IPDI, TDI, MDI or HDI; the small-molecule unsaturated monohydric alcohol is hydroxyethyl acrylate or hydroxybutyl acrylate.
A primer prepared by the preparation method.
Uniformly coating a primer on the top surface of a silicone rubber frame, turning over after surface drying, uniformly coating the primer on the bottom surface of the silicone rubber frame, adding the silicone rubber frame on the periphery of a aerogel sheet felt after surface drying, wherein the shapes and the sizes of the silicone rubber frame and the aerogel sheet felt are matched, and the thickness of the aerogel sheet felt is smaller than that of the silicone rubber frame so as to ensure that the upper end surface and the lower end surface of the silicone rubber frame after the silicone rubber frame is added protrude out of the upper end surface and the lower end surface of the aerogel sheet felt; and then respectively pasting a layer of PET film with the same outline size as the top surface/bottom surface of the silicon rubber frame on the top surface and the bottom surface of the silicon rubber frame, wherein one surface of the PET film, which contacts with the silicon rubber frame, is provided with thermosetting epoxy resin, and the aerogel felt product is prepared by up-down bidirectional hot pressing.
Preferably, the hot pressing temperature is 90-120 ℃, and the hot pressing time is 10-20s.
Preferably, the surface drying mode is that the surface drying is carried out for 10min-30min at normal temperature, and the solvent is completely volatilized.
Compared with the prior art, the invention has the following beneficial effects:
1. in the method (1), firstly, an aminosilane coupling agent is used for partially modifying epoxy resin, so that a siloxane functional group is grafted on the epoxy resin, vinyl contained in vinyl silicone rubber and vinyl contained in vinyl silane coupling agent react with vinyl and hydrogen-containing silicone oil remained in a silicone rubber frame, at the moment, the grafted siloxane functional group on the epoxy resin can react with the vinyl silane coupling agent in the using process, and at the same time, the epoxy functional group contained in a primer can react with the epoxy resin on a PET film, therefore, the primer prepared by the method (1) can form good adhesion between the silicone rubber frame and the PET film, and further realize firm encapsulation of the aerogel film felt;
2. in the method (2), vinyl contained in small-molecule unsaturated monohydric alcohol in vinyl silicone rubber and a compatilizer can react with vinyl and hydrogen-containing silicone oil remained in a silicone rubber frame, and meanwhile, epoxy functional groups contained in glycidyl components in the compatilizer can react with epoxy resin on a PET film, so that the primer prepared by the method (2) can form good adhesion between the silicone rubber frame and the PET film, and further realize firm encapsulation of an aerogel film felt;
3. in the preparation process of the compatilizer, the invention adopts the micromolecular polyalcohol to improve the crosslinking degree of the synthesized molecules, so that the prepared primer product has larger viscosity.
Drawings
Fig. 1: longitudinal section of aerogel sheet felt after adding silicone rubber frame and before packaging PET film.
Fig. 2: aerogel blanket a front view of the final product after encapsulation of the PET film.
Fig. 3: front view of the bond strength test specimen.
Fig. 4: a top view of the bond strength test specimen.
Detailed Description
The present invention will be described in further detail below for the purpose of making the present invention clearer and more specific. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Methyl vinyl silicone rubber in the following examples was purchased from Dongjue silicone (Nanj) Inc., model: 110-3S, molecular weight 63 ten thousand, vinyl content 0.23 mol%.
Preparation method (1) example
Example 1
A preparation method of primer comprises the following preparation steps:
(1) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 12 parts of methyl vinyl silicone rubber, 1 part of vinyl silane coupling agent, 1 part of amino silane coupling agent, 0.5 part of vulcanizing agent, 6 parts of epoxy resin, 0.12 part of catalyst and the balance of benzene solvent;
(2) Mixing an aminosilane coupling agent, epoxy resin and a part of benzene solvent at 50 ℃ for 3 hours; the dosage of the part of benzene series solvent accounts for 80 percent of the total amount of the benzene series solvent;
(3) Adding methyl vinyl silicone rubber, a vinyl silane coupling agent, a vulcanizing agent, a catalyst and residual benzene solvent into the product obtained in the step (2) at normal temperature, and mixing to prepare a primer;
wherein the vinyl silane coupling agent is vinyl trimethoxy silane; the aminosilane coupling agent is 3-aminopropyl trimethoxy silane; the epoxy resin is a mixture of E20 and E44 in a mass ratio of 2:1; the vulcanizing agent is dibenzoyl peroxide vulcanizing agent; the catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, wherein the catalyst part refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst; the benzene solvent is toluene.
Application of primer: uniformly coating a primer on the top surface of a silicone rubber frame, turning over after surface drying, uniformly coating the primer on the bottom surface of the silicone rubber frame, after surface drying, adding the silicone rubber frame on the periphery of a aerogel sheet felt, namely placing the aerogel sheet felt in the silicone rubber frame, wherein the silicone rubber frame and the aerogel sheet felt are in shape and size phase adaptation (the aerogel sheet felt is cuboid, the silicone rubber frame corresponds to a rectangular frame), and the thickness of the aerogel sheet felt is smaller than that of the silicone rubber frame, so that the upper end surface and the lower end surface of the silicone rubber frame protrude out of the upper end surface and the lower end surface of the aerogel sheet felt after the silicone rubber frame is added; then, respectively pasting a layer of PET film with the same outline size as the top surface/bottom surface of the silicon rubber frame on the top surface and the bottom surface of the silicon rubber frame, wherein one surface of the PET film, which contacts the silicon rubber frame, is provided with thermosetting epoxy resin, hot pressing is carried out in an up-down two-way manner, the hot pressing temperature is 90 ℃, the hot pressing time is 15s, and the PET film packaging of the aerogel film felt is realized, so that the aerogel felt product is prepared; a longitudinal cross-sectional view of the aerogel sheet mat after the addition of the silicone rubber frame and before the encapsulation of the PET film is shown in FIG. 1, and a front view of the final product obtained after the encapsulation of the PET film is shown in FIG. 2, wherein 1 represents the aerogel sheet mat, 2 represents the silicone rubber frame, and 3 represents the PET film.
Example 2
A preparation method of primer comprises the following preparation steps:
(1) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 6 parts of methyl vinyl silicone rubber, 0.1 part of vinyl silane coupling agent, 1 part of amino silane coupling agent, 0.6 part of vulcanizing agent, 6 parts of epoxy resin, 0.1 part of catalyst and the balance of benzene solvent;
(2) Mixing an aminosilane coupling agent, epoxy resin and part of benzene solvent at 100 ℃ for reaction for 1h; the dosage of the part of benzene series solvent accounts for 40% of the total amount of the benzene series solvent;
(3) Adding methyl vinyl silicone rubber, a vinyl silane coupling agent, a vulcanizing agent, a catalyst and residual benzene solvent into the product obtained in the step (2) at normal temperature, and mixing to prepare a primer;
wherein the vinyl silane coupling agent is vinyl triethoxysilane; the aminosilane coupling agent is 3-aminopropyl triethoxysilane; the epoxy resin is E20; the vulcanizing agent is a bi-di-tetra vulcanizing agent; the catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, wherein the catalyst part refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst; the benzene solvent is toluene.
Application of primer: the application method is basically the same as in example 1, except that: the hot pressing temperature is 110 ℃, and the hot pressing time is 20s.
Example 3
A preparation method of primer comprises the following preparation steps:
(1) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 10 parts of methyl vinyl silicone rubber, 0.5 part of vinyl silane coupling agent, 0.3 part of amino silane coupling agent, 0.6 part of vulcanizing agent, 5 parts of epoxy resin, 0.12 part of catalyst and the balance of benzene solvent;
(2) Mixing an aminosilane coupling agent, epoxy resin and a part of benzene solvent at 80 ℃ for 3 hours; the dosage of the part of benzene series solvent accounts for 90% of the total amount of the benzene series solvent;
(3) Adding methyl vinyl silicone rubber, a vinyl silane coupling agent, a vulcanizing agent, a catalyst and residual benzene solvent into the product obtained in the step (2) at normal temperature, and mixing to prepare a primer;
wherein the vinyl silane coupling agent is vinyl trimethoxy silane; the aminosilane coupling agent is a mixture of 3-aminopropyl trimethoxy silane and 3-aminopropyl triethoxy silane according to the mol ratio of 2:1; the epoxy resin is E44; the vulcanizing agent is dibenzoyl peroxide vulcanizing agent; the catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, wherein the catalyst part refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst; the benzene solvent is a mixture of toluene and dimethylbenzene according to a molar ratio of 1:1.
Application of primer: the application method is basically the same as in example 1, except that: the hot pressing temperature is 120 ℃, and the hot pressing time is 10s.
Preparation method (2) example
Example 4
A preparation method of primer comprises the following preparation steps:
(1) Preparing a compatilizer: firstly removing free water in the micromolecular polyol in vacuum, then reacting the micromolecular polyol with isocyanate for 5 hours at 50 ℃, keeping the temperature to 50 ℃ after the reaction is finished, adding a No. 1 benzene solvent, then adding a No. 1 catalyst, adding (S) -glycidol and micromolecular unsaturated monohydric alcohol into the mixture, and continuously reacting for 1 hour at 50 ℃ to prepare a compatilizer;
(2) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 3 parts of methyl vinyl silicone rubber, 0.6 part of vulcanizing agent, 20 parts of compatilizer, 0.1 part of 2# catalyst and the balance of 2# benzene solvent; uniformly mixing all the raw materials at normal temperature to prepare a primer; the No. 2 catalyst is a platinum catalyst;
wherein the 1# benzene solvent and the 2# benzene solvent in the step (1) and the step (2) are toluene;
in the step (1), the small molecule polyol is trimethylolpropane; the isocyanate is IPDI; the small-molecule unsaturated monohydric alcohol is hydroxyethyl acrylate; the molar ratio of the sum of the hydroxyl groups in the small molecular polyol, (S) -glycidol and the small molecular unsaturated monohydric alcohol to the isocyanate groups in the isocyanate is 1:1, and the molar ratio of the hydroxyl groups in the small molecular polyol and the isocyanate groups in the isocyanate is 1:2, and the molar ratio of the hydroxyl groups in the (S) -glycidol and the hydroxyl groups in the small molecular unsaturated monohydric alcohol is 1:1.2; the addition amount of the 1# benzene solvent is 50% of the sum of the mass of the dehydrated micromolecular polyol, isocyanate, (S) -glycidol and the mass of the micromolecular unsaturated monohydric alcohol; the catalyst 1 is dibutyl tin dilaurate, and the addition amount of the catalyst 1 is one ten thousandth of the mass sum of dehydrated micromolecular polyol, isocyanate, benzene solvent 1, (S) -glycidol and micromolecular unsaturated monohydric alcohol;
in the step (2), the vulcanizing agent is dibenzoyl peroxide vulcanizing agent; the No. 2 catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, and the part of the No. 2 catalyst refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst.
Application of primer: the application method is basically the same as in example 1, except that: the hot pressing temperature is 100 ℃, and the hot pressing time is 15s.
Example 5
A preparation method of primer comprises the following preparation steps:
(1) Preparing a compatilizer: firstly removing free water in the micromolecular polyol in vacuum, then reacting the micromolecular polyol with isocyanate for 1h at 80 ℃, cooling and keeping the temperature to 60 ℃ after the reaction is finished, adding a 1# benzene solvent, then adding a 1# catalyst, adding (S) -glycidol and micromolecular unsaturated monohydric alcohol into the mixture, and continuously reacting for 2h at 60 ℃ to prepare a compatilizer;
(2) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 10 parts of methyl vinyl silicone rubber, 0.8 part of vulcanizing agent, 10 parts of compatilizer, 0.3 part of 2# catalyst and the balance of 2# benzene solvent; uniformly mixing all the raw materials at normal temperature to prepare a primer; the No. 2 catalyst is a platinum catalyst;
wherein the 1# benzene solvent and the 2# benzene solvent in the step (1) and the step (2) are xylene;
in the step (1), the small molecule polyol is trimethylolethane; the isocyanate is TDI; the small-molecule unsaturated monohydric alcohol is hydroxybutyl acrylate; the molar ratio of the sum of the hydroxyl groups in the small molecular polyol, (S) -glycidol and the small molecular unsaturated monohydric alcohol to the isocyanate groups in the isocyanate is 1:1, the molar ratio of the hydroxyl groups in the small molecular polyol and the isocyanate groups in the isocyanate is 1:2, and the molar ratio of the hydroxyl groups in the (S) -glycidol and the hydroxyl groups in the small molecular unsaturated monohydric alcohol is 1:2; the addition amount of the 1# benzene solvent is 80% of the sum of the mass of the dehydrated micromolecular polyol, isocyanate, (S) -glycidol and the mass of the micromolecular unsaturated monohydric alcohol; the catalyst 1 is dibutyltin dichloride, and the addition amount of the catalyst 1 is five parts per million of the mass sum of dehydrated micromolecular polyol, isocyanate, benzene solvent 1, (S) -glycidol and micromolecular unsaturated monohydric alcohol;
in the step (2), the vulcanizing agent is a bis-di-tetrasulfide agent; the No. 2 catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, and the part of the No. 2 catalyst refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst.
Application of primer: the application method is basically the same as in example 1, except that: the hot pressing temperature is 100 ℃, and the hot pressing time is 15s.
Example 6
A preparation method of primer comprises the following preparation steps:
(1) Preparing a compatilizer: firstly removing free water in the micromolecular polyol in vacuum, then reacting the micromolecular polyol with isocyanate for 3 hours at 80 ℃, cooling and keeping the temperature to 50 ℃ after the reaction is finished, adding a 1# benzene solvent, then adding a 1# catalyst, adding (S) -glycidol and micromolecular unsaturated monohydric alcohol into the mixture, and continuously reacting for 2 hours at 50 ℃ to prepare a compatilizer;
(2) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 15 parts of methyl vinyl silicone rubber, 0.3 part of vulcanizing agent, 10 parts of compatilizer, 0.2 part of 2# catalyst and the balance of 2# benzene solvent; uniformly mixing all the raw materials at normal temperature to prepare a primer; wherein the No. 2 catalyst is a platinum catalyst;
wherein the 1# benzene solvent and the 2# benzene solvent in the step (1) and the step (2) are toluene;
in the step (1), the small molecule polyol is trimethylolpropane; the isocyanate is MDI; the small-molecule unsaturated monohydric alcohol is hydroxyethyl acrylate; the molar ratio of the sum of the hydroxyl groups in the small molecular polyol, (S) -glycidol and the small molecular unsaturated monohydric alcohol to the isocyanate groups in the isocyanate is 1:1, and the molar ratio of the hydroxyl groups in the small molecular polyol and the isocyanate groups in the isocyanate is 1:2.2, and the molar ratio of the hydroxyl groups in the (S) -glycidol and the hydroxyl groups in the small molecular unsaturated monohydric alcohol is 1:0.5; the addition amount of the 1# benzene solvent is 70% of the sum of the mass of the dehydrated micromolecular polyol, isocyanate, (S) -glycidol and the mass of the micromolecular unsaturated monohydric alcohol; the catalyst 1 is dibutyl tin dilaurate, and the addition amount of the catalyst 1 is three parts per million of the mass sum of dehydrated micromolecular polyol, isocyanate, benzene solvent 1, (S) -glycidol and micromolecular unsaturated monohydric alcohol;
in the step (2), the vulcanizing agent is dibenzoyl peroxide vulcanizing agent; the No. 2 catalyst is a platinum catalyst, and is purchased from Dongyuan Crypton organosilicon materials Co., ltd., model 5000PPM, and the part of the No. 2 catalyst refers to the dosage of 5000PPM platinum catalyst, but not to the effective platinum content of 5000PPM platinum catalyst.
Application of primer: the application method is basically the same as in example 1, except that: the hot pressing temperature is 120 ℃, and the hot pressing time is 10s.
Adhesive strength test
The primers prepared in examples 1-6 were prepared into corresponding test samples according to the following preparation procedures: as shown in fig. 3 and 4, the primer was uniformly applied on the top surface of the silicone rubber sheet 4 (the silicone rubber frame in examples 1 to 6, which was made of the same material), the surface was turned over, the primer was uniformly applied on the bottom surface of the silicone rubber sheet 4, the surface was dried, the top and bottom surfaces of the silicone rubber sheet 4 were covered with the upper and lower PET films 5, the surface of the PET film 5 near the silicone rubber sheet 4 was provided with a thermosetting epoxy resin, and the silicone rubber sheet 4 was overlapped with the PET film 5 by hot pressing together, to obtain a test sample. The upper and lower PET films 5 of the test sample respectively comprise a lap joint end 5-1 and a clamping end 5-2 which is reversely extended towards the lap joint end, wherein the thickness of the PET film 5 is 2+/-0.1 mm, the length of the lap joint end 5-1 of the PET film is 12.5+/-0.5 mm, and the width of the lap joint end 5-1 of the PET film is 25+/-0.5 mm; the length of the silicon rubber sheet 4 is 12.5 plus or minus 0.5mm, the width is 25 plus or minus 0.5mm, and the thickness of the silicon rubber sheet is 2 plus or minus 0.1mm.
Clamping ends 5-2 at both ends of the test sample were clamped in upper and lower clamps, the tester was started, the maximum load of shear failure of the test sample was recorded at a speed of 5.+ -.1 mm/min, and the type of failure (cohesive failure, adhesive failure, PET film failure) was recorded, and the adhesive strength was calculated by the maximum load, as follows:
τ=p/(b×l), where: τ is the bond strength (unit: MPa); p is the maximum load (unit: N) of the shear failure of the sample; b is the width (unit: mm) of the lap surface of the sample; l is the length of the lap surface of the sample (unit: mm).
The test results are shown in Table 1. As can be seen from table 1: the primer is coated on the surface of the silicone rubber, and is connected with a PET film with thermosetting epoxy resin on the surface in a hot pressing way, the bonding strength is more than or equal to 3.19MPa, the tensile shearing damage forms are cohesive damage, and the PET film and the silicone rubber are firmly bonded and are not easy to delaminate.
Claims (7)
1. The preparation method of the primer is characterized by comprising the following steps:
(1) The preparation method comprises the following steps of (1) preparing raw materials according to the total of 100 parts by weight: 6-12 parts of vinyl silicone rubber, 0.1-1 part of vinyl silane coupling agent, 0.1-1 part of amino silane coupling agent, 0.3-1 part of vulcanizing agent, 1-6 parts of epoxy resin, 0.1-0.2 part of catalyst and the balance of benzene solvent; the catalyst is a platinum catalyst, and the benzene series solvent is one or a mixture of toluene and xylene;
(2) Mixing an aminosilane coupling agent, epoxy resin and part of benzene solvent at 50-100 ℃ for reaction for 1-3h; the dosage of the part of benzene series solvent accounts for 40% -90% of the total amount of the benzene series solvent;
(3) And (2) adding vinyl silicone rubber, a vinyl silane coupling agent, a vulcanizing agent, a catalyst and residual benzene solvent into the product obtained in the step (2) at normal temperature, and mixing to obtain the primer.
2. A method of preparing a primer as claimed in claim 1, wherein: the vinyl silicone rubber refers to a solid silicone rubber containing vinyl.
3. A method of preparing a primer as claimed in claim 1, wherein: the vinyl silane coupling agent is vinyl trimethoxy silane or vinyl triethoxy silane; the aminosilane coupling agent is one or a mixture of two of 3-aminopropyl trimethoxy silane and 3-aminopropyl triethoxy silane; the epoxy resin is one or a mixture of two of E20 and E44; the vulcanizing agent is one of dibenzoyl peroxide vulcanizing agent and bis-tetra vulcanizing agent.
4. A primer prepared by the process of claim 1.
5. Use of the primer according to claim 4 for the preparation of aerogel blanket products, characterized in that: uniformly coating a primer on the top surface of a silicone rubber frame, turning over after surface drying, uniformly coating the primer on the bottom surface of the silicone rubber frame, adding the silicone rubber frame on the periphery of a aerogel sheet felt after surface drying, wherein the shapes and the sizes of the silicone rubber frame and the aerogel sheet felt are matched, and the thickness of the aerogel sheet felt is smaller than that of the silicone rubber frame so as to ensure that the upper end surface and the lower end surface of the silicone rubber frame after the silicone rubber frame is added protrude out of the upper end surface and the lower end surface of the aerogel sheet felt; and then respectively pasting a layer of PET film with the same outline size as the top surface/bottom surface of the silicon rubber frame on the top surface and the bottom surface of the silicon rubber frame, wherein one surface of the PET film, which contacts with the silicon rubber frame, is provided with thermosetting epoxy resin, and the aerogel felt product is prepared by up-down bidirectional hot pressing.
6. The use of the primer according to claim 5, wherein: the hot pressing temperature is 90-120 ℃, and the hot pressing time is 10-20s.
7. The use of the primer according to claim 6, wherein: the surface drying method is that the surface drying is carried out for 10min-30min at normal temperature, and the solvent is completely volatilized.
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| JP2657438B2 (en) * | 1991-09-27 | 1997-09-24 | 信越化学工業株式会社 | Primer composition |
| CN108485594A (en) * | 2018-03-27 | 2018-09-04 | 点馨（上海）实业有限公司 | adhesive and preparation method |
| CN112280469B (en) * | 2020-10-27 | 2022-03-25 | 东莞市众展有机硅材料有限公司 | Special bottom-coating-free platinum vulcanizing agent for combination of PA (polyamide) substrate and silica gel and preparation method thereof |
| CN113980641A (en) * | 2021-11-26 | 2022-01-28 | 四川东材科技集团股份有限公司 | Primer for improving binding force between silicone rubber and acrylic double-sided adhesive and preparation method thereof |
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