CN112143451A - Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof - Google Patents
Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof Download PDFInfo
- Publication number
- CN112143451A CN112143451A CN202011091964.3A CN202011091964A CN112143451A CN 112143451 A CN112143451 A CN 112143451A CN 202011091964 A CN202011091964 A CN 202011091964A CN 112143451 A CN112143451 A CN 112143451A
- Authority
- CN
- China
- Prior art keywords
- parts
- silicone sealant
- terminated polydimethylsiloxane
- bis
- nano
- Prior art date
- 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.)
- Pending
Links
- 239000004590 silicone sealant Substances 0.000 title claims abstract description 40
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- -1 polydimethylsiloxane Polymers 0.000 claims abstract description 79
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 63
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 63
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 61
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 40
- 229910000019 calcium carbonate Inorganic materials 0.000 claims abstract description 30
- 239000003054 catalyst Substances 0.000 claims abstract description 28
- 239000000945 filler Substances 0.000 claims abstract description 28
- 239000007822 coupling agent Substances 0.000 claims abstract description 27
- 239000004970 Chain extender Substances 0.000 claims abstract description 25
- BTLPDSCJUZOEJB-BUHFOSPRSA-N triethoxy-[(e)-2-triethoxysilylethenyl]silane Chemical group CCO[Si](OCC)(OCC)\C=C\[Si](OCC)(OCC)OCC BTLPDSCJUZOEJB-BUHFOSPRSA-N 0.000 claims abstract description 23
- 239000002250 absorbent Substances 0.000 claims abstract description 17
- 230000002745 absorbent Effects 0.000 claims abstract description 17
- PKBZOGROOQFGOE-UHFFFAOYSA-N trimethoxy(2-trimethoxysilylethenyl)silane Chemical group CO[Si](OC)(OC)C=C[Si](OC)(OC)OC PKBZOGROOQFGOE-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims description 19
- BSDOQSMQCZQLDV-UHFFFAOYSA-N butan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCCC[O-].CCCC[O-].CCCC[O-].CCCC[O-] BSDOQSMQCZQLDV-UHFFFAOYSA-N 0.000 claims description 12
- 239000013522 chelant Substances 0.000 claims description 12
- XPGAWFIWCWKDDL-UHFFFAOYSA-N propan-1-olate;zirconium(4+) Chemical compound [Zr+4].CCC[O-].CCC[O-].CCC[O-].CCC[O-] XPGAWFIWCWKDDL-UHFFFAOYSA-N 0.000 claims description 12
- 238000001816 cooling Methods 0.000 claims description 10
- 238000007599 discharging Methods 0.000 claims description 10
- 238000010438 heat treatment Methods 0.000 claims description 9
- QOWUTEUEDJTSAX-UHFFFAOYSA-H C(CC)O[Zr+2]OCCC.C(C)C(C(=O)[O-])(C(O)(C(=O)[O-])CC(=O)[O-])CC.C(C)C(C(=O)[O-])(C(O)(C(=O)[O-])CC(=O)[O-])CC.C(CC)O[Zr+2]OCCC.C(CC)O[Zr+2]OCCC Chemical compound C(CC)O[Zr+2]OCCC.C(C)C(C(=O)[O-])(C(O)(C(=O)[O-])CC(=O)[O-])CC.C(C)C(C(=O)[O-])(C(O)(C(=O)[O-])CC(=O)[O-])CC.C(CC)O[Zr+2]OCCC.C(CC)O[Zr+2]OCCC QOWUTEUEDJTSAX-UHFFFAOYSA-H 0.000 claims description 8
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical group CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 6
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 6
- JJQZDUKDJDQPMQ-UHFFFAOYSA-N dimethoxy(dimethyl)silane Chemical compound CO[Si](C)(C)OC JJQZDUKDJDQPMQ-UHFFFAOYSA-N 0.000 claims description 6
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N iron oxide Inorganic materials [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 6
- NDLPOXTZKUMGOV-UHFFFAOYSA-N oxo(oxoferriooxy)iron hydrate Chemical compound O.O=[Fe]O[Fe]=O NDLPOXTZKUMGOV-UHFFFAOYSA-N 0.000 claims description 6
- OGIDPMRJRNCKJF-UHFFFAOYSA-N titanium oxide Inorganic materials [Ti]=O OGIDPMRJRNCKJF-UHFFFAOYSA-N 0.000 claims description 6
- HACGJMKWALLVIX-UHFFFAOYSA-N 4-dimethoxysilylbutan-1-amine Chemical group CO[SiH](OC)CCCCN HACGJMKWALLVIX-UHFFFAOYSA-N 0.000 claims description 5
- JQBANXLLICSJTI-UHFFFAOYSA-N CCO[SiH](CCCCN)OCC Chemical group CCO[SiH](CCCCN)OCC JQBANXLLICSJTI-UHFFFAOYSA-N 0.000 claims description 5
- QPLDLSVMHZLSFG-UHFFFAOYSA-N Copper oxide Chemical compound [Cu]=O QPLDLSVMHZLSFG-UHFFFAOYSA-N 0.000 claims description 5
- 239000005751 Copper oxide Substances 0.000 claims description 5
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 5
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 5
- 229910000431 copper oxide Inorganic materials 0.000 claims description 5
- 239000011258 core-shell material Substances 0.000 claims description 5
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 5
- 229910000480 nickel oxide Inorganic materials 0.000 claims description 5
- RSWGJHLUYNHPMX-UHFFFAOYSA-N 1,4a-dimethyl-7-propan-2-yl-2,3,4,4b,5,6,10,10a-octahydrophenanthrene-1-carboxylic acid Chemical compound C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 4
- LVACOMKKELLCHJ-UHFFFAOYSA-N 3-trimethoxysilylpropylurea Chemical compound CO[Si](OC)(OC)CCCNC(N)=O LVACOMKKELLCHJ-UHFFFAOYSA-N 0.000 claims description 4
- 239000006096 absorbing agent Substances 0.000 claims description 4
- 235000014113 dietary fatty acids Nutrition 0.000 claims description 4
- 239000000194 fatty acid Substances 0.000 claims description 4
- 229930195729 fatty acid Natural products 0.000 claims description 4
- 150000004665 fatty acids Chemical class 0.000 claims description 4
- LVNLBBGBASVLLI-UHFFFAOYSA-N 3-triethoxysilylpropylurea Chemical compound CCO[Si](OCC)(OCC)CCCNC(N)=O LVNLBBGBASVLLI-UHFFFAOYSA-N 0.000 claims description 3
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- ZLNAFSPCNATQPQ-UHFFFAOYSA-N ethenyl-dimethoxy-methylsilane Chemical compound CO[Si](C)(OC)C=C ZLNAFSPCNATQPQ-UHFFFAOYSA-N 0.000 claims description 3
- 238000000034 method Methods 0.000 claims description 3
- INJVFBCDVXYHGQ-UHFFFAOYSA-N n'-(3-triethoxysilylpropyl)ethane-1,2-diamine Chemical compound CCO[Si](OCC)(OCC)CCCNCCN INJVFBCDVXYHGQ-UHFFFAOYSA-N 0.000 claims description 3
- ZLDHYRXZZNDOKU-UHFFFAOYSA-N n,n-diethyl-3-trimethoxysilylpropan-1-amine Chemical compound CCN(CC)CCC[Si](OC)(OC)OC ZLDHYRXZZNDOKU-UHFFFAOYSA-N 0.000 claims description 3
- LIBWSLLLJZULCP-UHFFFAOYSA-N n-(3-triethoxysilylpropyl)aniline Chemical compound CCO[Si](OCC)(OCC)CCCNC1=CC=CC=C1 LIBWSLLLJZULCP-UHFFFAOYSA-N 0.000 claims description 3
- KBJFYLLAMSZSOG-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)aniline Chemical compound CO[Si](OC)(OC)CCCNC1=CC=CC=C1 KBJFYLLAMSZSOG-UHFFFAOYSA-N 0.000 claims description 3
- 239000005543 nano-size silicon particle Substances 0.000 claims description 3
- 229910021392 nanocarbon Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- JXUKBNICSRJFAP-UHFFFAOYSA-N triethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CCO[Si](OCC)(OCC)CCCOCC1CO1 JXUKBNICSRJFAP-UHFFFAOYSA-N 0.000 claims description 3
- DQZNLOXENNXVAD-UHFFFAOYSA-N trimethoxy-[2-(7-oxabicyclo[4.1.0]heptan-4-yl)ethyl]silane Chemical compound C1C(CC[Si](OC)(OC)OC)CCC2OC21 DQZNLOXENNXVAD-UHFFFAOYSA-N 0.000 claims description 3
- BPSIOYPQMFLKFR-UHFFFAOYSA-N trimethoxy-[3-(oxiran-2-ylmethoxy)propyl]silane Chemical compound CO[Si](OC)(OC)CCCOCC1CO1 BPSIOYPQMFLKFR-UHFFFAOYSA-N 0.000 claims description 3
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 3
- 229920002554 vinyl polymer Polymers 0.000 claims description 3
- RWLDCNACDPTRMY-UHFFFAOYSA-N 3-triethoxysilyl-n-(3-triethoxysilylpropyl)propan-1-amine Chemical compound CCO[Si](OCC)(OCC)CCCNCCC[Si](OCC)(OCC)OCC RWLDCNACDPTRMY-UHFFFAOYSA-N 0.000 claims 1
- YUYCVXFAYWRXLS-UHFFFAOYSA-N trimethoxysilane Chemical compound CO[SiH](OC)OC YUYCVXFAYWRXLS-UHFFFAOYSA-N 0.000 claims 1
- 238000003860 storage Methods 0.000 abstract description 13
- 230000002035 prolonged effect Effects 0.000 abstract description 3
- 238000012360 testing method Methods 0.000 description 11
- 238000001035 drying Methods 0.000 description 8
- 230000000694 effects Effects 0.000 description 7
- 229920002379 silicone rubber Polymers 0.000 description 7
- 239000000565 sealant Substances 0.000 description 6
- 239000004945 silicone rubber Substances 0.000 description 5
- 230000032683 aging Effects 0.000 description 4
- BFXIKLCIZHOAAZ-UHFFFAOYSA-N methyltrimethoxysilane Chemical compound CO[Si](C)(OC)OC BFXIKLCIZHOAAZ-UHFFFAOYSA-N 0.000 description 4
- 239000001294 propane Substances 0.000 description 4
- PKDCQJMRWCHQOH-UHFFFAOYSA-N triethoxysilicon Chemical compound CCO[Si](OCC)OCC PKDCQJMRWCHQOH-UHFFFAOYSA-N 0.000 description 4
- PZJJKWKADRNWSW-UHFFFAOYSA-N trimethoxysilicon Chemical compound CO[Si](OC)OC PZJJKWKADRNWSW-UHFFFAOYSA-N 0.000 description 4
- 238000010276 construction Methods 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 238000010998 test method Methods 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 125000003545 alkoxy group Chemical group 0.000 description 2
- 238000009826 distribution Methods 0.000 description 2
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 description 2
- XCOASYLMDUQBHW-UHFFFAOYSA-N n-(3-trimethoxysilylpropyl)butan-1-amine Chemical compound CCCCNCCC[Si](OC)(OC)OC XCOASYLMDUQBHW-UHFFFAOYSA-N 0.000 description 2
- 238000004073 vulcanization Methods 0.000 description 2
- IUVCFHHAEHNCFT-INIZCTEOSA-N 2-[(1s)-1-[4-amino-3-(3-fluoro-4-propan-2-yloxyphenyl)pyrazolo[3,4-d]pyrimidin-1-yl]ethyl]-6-fluoro-3-(3-fluorophenyl)chromen-4-one Chemical compound C1=C(F)C(OC(C)C)=CC=C1C(C1=C(N)N=CN=C11)=NN1[C@@H](C)C1=C(C=2C=C(F)C=CC=2)C(=O)C2=CC(F)=CC=C2O1 IUVCFHHAEHNCFT-INIZCTEOSA-N 0.000 description 1
- OUGKFJZADGTJRG-UHFFFAOYSA-N [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O Chemical compound [SiH4].CC(OC(CCC)=NO)C(COC(CCC)=O)OC(CCC)=O OUGKFJZADGTJRG-UHFFFAOYSA-N 0.000 description 1
- TVJPBVNWVPUZBM-UHFFFAOYSA-N [diacetyloxy(methyl)silyl] acetate Chemical compound CC(=O)O[Si](C)(OC(C)=O)OC(C)=O TVJPBVNWVPUZBM-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006227 byproduct Substances 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 229920001971 elastomer Polymers 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 229920001296 polysiloxane Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/06—Non-macromolecular additives organic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- 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
-
- 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
- C08K2201/014—Additives containing two or more different additives of the same subgroup in C08K
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Compositions Of Macromolecular Compounds (AREA)
- Sealing Material Composition (AREA)
Abstract
A single-component dealcoholized room temperature vulcanized silicone sealant and a preparation method thereof are disclosed, wherein the silicone sealant comprises the following raw materials: 90-110 parts of alkoxy-terminated polydimethylsiloxane, 50-200 parts of nano calcium carbonate, 1-5 parts of heat-resistant filler, 0.1-2 parts of UV (ultraviolet) absorbent, 2-7 parts of cross-linking agent, 1-5 parts of chain extender, 1-6 parts of catalyst and 0.5-2 parts of coupling agent; the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene; the preparation method comprises the steps of 1-2 to obtain the silicone sealant; according to the silicone sealant, 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene is/are used as a cross-linking agent, and nano calcium carbonate, heat-resistant filler, UV (ultraviolet) absorbent, chain extender, catalyst and coupling agent are matched, so that the problem of low curing speed in the prior art is solved, the curing speed is obviously improved, and the storage period is prolonged.
Description
Technical Field
The invention relates to the technical field of silicone sealant, in particular to a single-component dealcoholized room temperature vulcanized silicone sealant and a preparation method thereof.
Background
The silicon rubber has excellent weather resistance, high and low temperature resistance, electric insulation and physiological compatibility, so that the silicon rubber has wide application in the fields of aerospace, construction, electronics, medical health and the like. According to the cross-linking vulcanization mode, the rubber can be divided into heat vulcanized silicone rubber and room temperature vulcanized silicone rubber; it can also be divided into addition type silicone rubber and condensation type silicone rubber. The condensed silicone rubber can be further divided into dealcoholized, deacidified, ketoxime, acetone and amide based on the by-products released during vulcanization.
The dealcoholized organosilicon sealant is prepared by mixing hydroxyl-terminated polydimethylsiloxane, methyltrimethoxysilane as a crosslinking agent, a titanium complex as a catalyst, a filler and other additives. Because the dealcoholization type cross-linking agent is methyl trimethoxy silane, the hydrolytic activity of the dealcoholization type cross-linking agent is lower than that of methyl tributyrinoxime silane and methyl triacetoxy silane, so that the curing speed of the dealcoholization type cross-linking agent is slow; meanwhile, the curing speed of the silicone sealant decreases with the storage time.
Disclosure of Invention
The invention aims to provide a single-component dealcoholization type room temperature vulcanized silicone sealant which uses alkoxy-terminated polydimethylsiloxane and is matched with 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene to act as a cross-linking agent, so that the curing speed is increased, and the storage stability of the silicone sealant is improved.
The invention also provides a preparation method of the single-component dealcoholized room temperature vulcanized silicone sealant, which is used for preparing the silicone sealant.
In order to achieve the purpose, the invention adopts the following technical scheme:
the single-component dealcoholized room temperature vulcanized silicone sealant comprises the following raw materials in parts by weight: 90-110 parts of alkoxy-terminated polydimethylsiloxane, 50-200 parts of nano calcium carbonate, 1-5 parts of heat-resistant filler, 0.1-2 parts of UV (ultraviolet) absorbent, 2-7 parts of cross-linking agent, 1-5 parts of chain extender, 1-6 parts of catalyst and 0.5-2 parts of coupling agent;
the alkoxy-terminated polydimethylsiloxane is at least one of trimethoxy silane-terminated polydimethylsiloxane, triethoxy silane-terminated polydimethylsiloxane, methyl dimethoxy silane-terminated polydimethylsiloxane, vinyl dimethoxy silane-terminated polydimethylsiloxane and phenyl dimethoxy silane-terminated polydimethylsiloxane;
the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene.
Preferably, the surface of the nano calcium carbonate is treated by fatty acid, resin acid or titanate, so that the nano calcium carbonate has a core-shell structure.
Preferably, the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000 to 80000 mPas.
Preferably, the UV absorber is an ultraviolet absorber of the benzotriazol type.
Preferably, the heat-resistant filler includes: at least one of nano titanium oxide, nano ferric oxide, nano ferroferric oxide, nano copper oxide, nano nickel oxide, nano silicon nitride or nano carbon tube.
Preferably, the chain extender is at least one of dimethyldimethoxysilane, methylvinyldimethoxysilane, secondary aminobutyldimethoxysilane and secondary aminobutyldiethoxysilane.
Preferably, the coupling agent is gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane, N-N-butyl-3-aminopropyltrimethoxysilane, N-N-butyl-3-aminopropyltriethoxysilane, bis- [3- (trimethoxy silicon) -propyl ] -amine, gamma-ureidopropyltrimethoxysilane, gamma-ureidopropyltriethoxysilane, bis- [3- (triethoxy silicon) -propyl ] -amine, 3-anilinopropyltrimethoxysilane, 3- (phenylamino) propyltriethoxysilane, N-aminopropyltrimethoxysilane, N-butyl-3-aminopropyltrimethoxysilane, N-ureidopropyltrimethoxysilane, N-ureidopropyltriethoxysilane, N-ureidopropyltrimethoxysilane, N-ureidopropyltriethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (1, 3-dimethylbutylidene) -3- (triethoxysilyl) -1-propyleneimine, N- (1, 3-dimethylbutylidene) -3- (trimethylsilyloxy) -1-propyleneimine, N-dimethyl-3-aminopropyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 3- (2, 3-epoxypropoxy) propyltrimethoxysilane and 3- (2, 3-epoxypropoxy) propyltriethoxysilane.
Preferably, the catalyst comprises: tetra-n-propyl zirconate, tetra-n-butyl zirconate, and/or bis (diethyl citrate) dipropoxy zirconium chelate.
A preparation method of a single-component dealcoholized room temperature vulcanized silicone sealant is used for preparing the silicone sealant;
the preparation method comprises the following steps:
step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV (ultraviolet) absorbent into a mixer at room temperature, heating to 100-130 ℃, and stirring for 60-120min under a vacuum condition;
step 2: and cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging.
The invention has the beneficial effects that:
according to the silicone sealant, 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene are/is used as a cross-linking agent of alkoxy end-capped polydimethylsiloxane, and nanometer calcium carbonate, a heat-resistant filler, a UV (ultraviolet) absorbent, a chain extender, a catalyst and a coupling agent are matched, so that the curing speed and the storage stability are effectively improved, the conventional cross-linking agents of methyltrimethoxysilane and vinyltrimethoxysilane are replaced, the problems that in the prior art, the curing speed is low due to the fact that different cross-linking agents are selected, the curing speed is obviously improved, and the storage period is prolonged are solved.
Detailed Description
The technical solution of the present invention is further explained by the following embodiments.
In order to facilitate an understanding of the present invention, a more complete description of the present invention is provided below. The present invention may be embodied in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
The single-component dealcoholized room temperature vulcanized silicone sealant comprises the following raw materials in parts by weight: 90-110 parts of alkoxy-terminated polydimethylsiloxane, 50-200 parts of nano calcium carbonate, 1-5 parts of heat-resistant filler, 0.1-2 parts of UV (ultraviolet) absorbent, 2-7 parts of cross-linking agent, 1-5 parts of chain extender, 1-6 parts of catalyst and 0.5-2 parts of coupling agent;
the alkoxy-terminated polydimethylsiloxane is at least one of trimethoxy silane-terminated polydimethylsiloxane, triethoxy silane-terminated polydimethylsiloxane, methyl dimethoxy silane-terminated polydimethylsiloxane, vinyl dimethoxy silane-terminated polydimethylsiloxane and phenyl dimethoxy silane-terminated polydimethylsiloxane;
the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene.
According to the silicone sealant, 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene are/is used as a cross-linking agent of alkoxy end-capped polydimethylsiloxane, and nanometer calcium carbonate, a heat-resistant filler, a UV (ultraviolet) absorbent, a chain extender, a catalyst and a coupling agent are matched, so that the curing speed and the storage stability are effectively improved, the conventional cross-linking agents of methyltrimethoxysilane and vinyltrimethoxysilane are replaced, the problems that in the prior art, the curing speed is low due to the fact that different cross-linking agents are selected, the curing speed is obviously improved, and the storage period is prolonged are solved.
Preferably, the surface of the nano calcium carbonate is treated by fatty acid, resin acid or titanate, so that the nano calcium carbonate has a core-shell structure.
The nano calcium carbonate is treated by fatty acid, resin acid or titanate to form a core-shell structure, so that the dispersibility of the nano calcium carbonate can be improved; after the surface of the nano calcium carbonate forms a core-shell structure, the mobility and the mobility range of the nano calcium carbonate are improved, the nano calcium carbonate is easy to mix with the alkoxy-terminated polydimethylsiloxane, and the nano calcium carbonate and the alkoxy-terminated polydimethylsiloxane are mixed more uniformly, so that the performance of the nano calcium carbonate can be fully exerted in the alkoxy-terminated polydimethylsiloxane, the glossiness and the mechanical strength of the silicone sealant are improved, and the nano calcium carbonate has high drying property and does not influence the curing speed of the cross-linking agent on the alkoxy-terminated polydimethylsiloxane.
Preferably, the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000 to 80000 mPas.
The viscosity of the alkoxy-terminated polydimethylsiloxane may be in any range, and preferably, is 10000 to 80000 mPas, at which the workability, curing speed and storage stability of the silicone sealant are optimal.
Preferably, the UV absorber is an ultraviolet absorber of the benzotriazol type.
The benzotriazole ultraviolet absorbent has the effect of UV absorption, can absorb UV light, prevents the influence of UV on the silicone sealant, and improves the stability and the storage property of the silicone sealant; meanwhile, the benzotriazole has few impurity types, high content and good stability.
Preferably, the heat-resistant filler includes: at least one of nano titanium oxide, nano ferric oxide, nano ferroferric oxide, nano copper oxide, nano nickel oxide, nano silicon nitride or nano carbon tube.
The heat-resistant filler can improve the heat resistance of the silicone sealant, and can be replaced by other commercially available heat-resistant fillers.
Preferably, the chain extender is at least one of dimethyldimethoxysilane, methylvinyldimethoxysilane, secondary aminobutyldimethoxysilane and secondary aminobutyldiethoxysilane.
Preferably, the coupling agent is gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane, N-N-butyl-3-aminopropyltrimethoxysilane, N-N-butyl-3-aminopropyltriethoxysilane, bis- [3- (trimethoxy silicon) -propyl ] -amine, gamma-ureidopropyltrimethoxysilane, gamma-ureidopropyltriethoxysilane, bis- [3- (triethoxy silicon) -propyl ] -amine, 3-anilinopropyltrimethoxysilane, 3- (phenylamino) propyltriethoxysilane, N-aminopropyltrimethoxysilane, N-butyl-3-aminopropyltrimethoxysilane, N-ureidopropyltrimethoxysilane, N-ureidopropyltriethoxysilane, N-ureidopropyltrimethoxysilane, N-ureidopropyltriethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (1, 3-dimethylbutylidene) -3- (triethoxysilyl) -1-propyleneimine, N- (1, 3-dimethylbutylidene) -3- (trimethylsilyloxy) -1-propyleneimine, N-dimethyl-3-aminopropyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 3- (2, 3-epoxypropoxy) propyltrimethoxysilane and 3- (2, 3-epoxypropoxy) propyltriethoxysilane.
The coupling agent may be replaced by other coupling agents on the market.
Preferably, the catalyst comprises: tetra-n-propyl zirconate, tetra-n-butyl zirconate, and/or bis (diethyl citrate) dipropoxy zirconium chelate.
The scheme uses the combination of tetra-n-propyl zirconate, tetra-n-butyl zirconate and bis (diethyl citrate) dipropoxy zirconium chelate as the catalyst, improves the crosslinking efficiency of alkoxy-terminated polydimethylsiloxane, further improves the curing speed of the silicone sealant, and can be better than the effect of using any one or two when the three are used in combination.
A preparation method of a single-component dealcoholized room temperature vulcanized silicone sealant is used for preparing the silicone sealant;
the preparation method comprises the following steps:
step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV (ultraviolet) absorbent into a mixer at room temperature, heating to 100-130 ℃, and stirring for 60-120min under a vacuum condition;
step 2: and cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging.
And (3) performance testing:
(1) surface drying time: according to GB/T13477.5-2003 (test method for building sealants part 5: determination of open time).
(2) Testing of storage stability: the prepared sealant is placed in an oven at 100 ℃ for 1 day and 2 days, and a sealant strip is formed to test the surface drying time and the curing condition.
(3) Test of tensile bond Strength at 23 ℃: according to GB/T13477.8-2003 (test for tensile bond strength at 23 ℃ C. of the test method for building sealants part 8).
(4) Test of tensile bond strength at 90 ℃: according to GB16776-2005 (test of tensile bond strength of construction Silicone construction adhesive 6.8.590 ℃).
(5) Elongation test for maximum strength at 23 ℃: according to GB/T13477.8-2003 (test method for building sealants part 8: test for elongation for maximum strength at 23 ℃).
Example A:
step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV absorbent into a mixer at room temperature according to the table 1, heating to 110 ℃, and stirring for 80min under a vacuum condition;
step 2: and cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging.
Wherein the alkoxy-terminated polydimethylsiloxane is trimethoxy silane-terminated polydimethylsiloxane, and the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000-80000 mPa & s; the cross-linking agent is 1, 2-bis (triethoxysilyl) ethylene; the heat-resistant filler is the combination of nano titanium oxide and nano ferric oxide; the chain extender is dimethyl dimethoxy silane; the coupling agent is gamma-aminopropyl triethoxysilane; the catalyst is a combination of tetra-n-propyl zirconate, tetra-n-butyl zirconate and (diethyl citrate) dipropoxy zirconium chelate.
TABLE 1 component distribution for example A
The examples A1-A6 were tested for properties and Table 2 was prepared.
TABLE 2 Performance testing of example A
Description of the drawings:
1. as can be seen from the comparison of examples A1 with examples A2-A4, the alkoxy-terminated polydimethylsiloxane of example A1 has a fraction of 80 parts, which is 10 parts less than that of example A2, and although the tack-free time is close to that of examples A2-A4, the mechanical properties are too low because of its content, the tensile bond strength at 23 ℃ is only 1.00MPa, the tensile bond strength at 90 ℃ is only 0.81MPa, and the elongation at the maximum strength at 23 ℃ is only 277%;
as can be seen from the comparison of example A5 with examples A2-A4, the alkoxy-terminated polydimethylsiloxane portion of example A5 was 120 parts, which was 10 parts more than that of example A4, whereas the tack-free times of the two groups of examples were significantly different, the initial tack-free time of example A4 being 12 min; whereas example A5 with an addition of 10 parts of alkoxy-terminated polydimethylsiloxane, the open time of example A5 was 26min, a difference of 14min, both examples reflecting that the addition of 10 parts of alkoxy-terminated polydimethylsiloxane instead resulted in a 50% increase in open time.
2. As can be seen by comparing example A3 with example A6, the difference between these examples is that example A6 does not use a crosslinking agent, i.e., no 1, 2-bis (triethoxysilyl) ethylene is added, and the tack-free time is extended from 8min for example A3 to 90min for example A6 due to the excessively slow crosslinking rate in the formulation, indicating that the 1, 2-bis (triethoxysilyl) ethylene of example A3 has an effect on silicone sealants to increase the cure rate.
In summary, in this example A2-A4, the addition amount of alkoxy-terminated polydimethylsiloxane is controlled to 90-110 parts, and the curing speed of alkoxy-terminated polydimethylsiloxane is significantly improved by 1, 2-bis (triethoxysilyl) ethylene.
Example B:
example B1
Step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV absorbent into a mixer at room temperature, heating to 110 ℃, and stirring for 80min under a vacuum condition;
step 2: cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging; wherein the cross-linking agent is 1, 2-bis (triethoxysilyl) ethylene.
Example B2
Step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV absorbent into a mixer at room temperature, heating to 110 ℃, and stirring for 80min under a vacuum condition;
step 2: cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging; wherein the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene.
Example B3
Step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV absorbent into a mixer at room temperature, heating to 110 ℃, and stirring for 80min under a vacuum condition;
step 2: cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging; wherein the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and 1, 2-bis (triethoxysilyl) ethylene in a weight ratio of 1: 1 in combination.
Wherein, in the examples B1-B3, the alkoxy-terminated polydimethylsiloxane is the trimethoxy silane-terminated polydimethylsiloxane and the viscosity is 10000-80000 mPa & s according to the example A3 in the table 1; the heat-resistant filler is the combination of nano titanium oxide and nano ferric oxide; the chain extender is dimethyl dimethoxy silane; the coupling agent is gamma-aminopropyl triethoxysilane; the catalyst is a combination of tetra-n-propyl zirconate, tetra-n-butyl zirconate and (diethyl citrate) dipropoxy zirconium chelate.
The examples B1-B3 were tested for properties and Table 3 was prepared.
TABLE 3 Performance testing of example B
Description of the drawings:
as can be seen by comparing examples B1-B3, example B1 used 1, 2-bis (triethoxysilyl) ethylene alone, example B2 used 1, 2-bis (triethoxysilyl) ethylene alone, and the initial tack-free of both example B1 and example B2 was comparable to example B3, but only between 1 and 2 minutes, but the difference between both example B1 and example B2 and example B3 began to increase when aged at 100 ℃ for a period of time; after aging for 24h, the tack-free time for example B1 was 14min, the tack-free time for example B2 was 16min, and the tack-free time for example B3 was optimally 12 min; further, after 48h of aging, the tack-free time for example B1 was 32min, the tack-free time for example B2 was 33min, and the tack-free time for example B3 was optimally 27 min; it is illustrated that, in the embodiment B3, since 1, 2-bis (triethoxysilyl) ethylene and 1, 2-bis (triethoxysilyl) ethylene are used simultaneously, the effect of aging resistance is better than that of using two kinds of crosslinking agents alone, especially for the high temperature environment, the storage stability can be improved by using both 1, 2-bis (triethoxysilyl) ethylene and 1, 2-bis (triethoxysilyl) ethylene simultaneously, so as to further prevent the silicone sealant from aging during the storage process, so as to influence the surface drying time, and solve the problem of the prior art that the surface drying performance of the silicone sealant is reduced during the storage process.
Example C:
step 1: according to example A3 in Table 1, alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV absorber were added to a mixer at room temperature, heated to 110 ℃ and stirred under vacuum for 80 min;
step 2: and cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging.
Wherein the alkoxy-terminated polydimethylsiloxane is trimethoxy silane-terminated polydimethylsiloxane, and the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000-80000 mPa & s; the cross-linking agent is 1, 2-bis (triethoxysilyl) ethylene; the heat-resistant filler is the combination of nano titanium oxide and nano ferric oxide; the chain extender is dimethyl dimethoxy silane; the coupling agent is gamma-aminopropyl triethoxysilane; catalysts examples C1-C7 were prepared as shown in Table 4.
TABLE 4 component distribution of catalyst in example C
Description of the drawings:
as seen in examples C1-C6, the tack-free time increased with any of tetra-n-propyl zirconate, tetra-n-butyl zirconate, and bis (diethyl citrate) dipropoxy zirconium chelate; similarly, when a combination of any two of tetra-n-propyl zirconate, tetra-n-butyl zirconate, and bis (diethyl citrate) dipropoxy zirconium chelate is used, although the effect will be as good as when any one is used, the effect is still not optimal; just like example C7, the example uses tetra-n-propyl zirconate, tetra-n-butyl zirconate and bis (diethyl citrate) dipropoxy zirconium chelate at the same time, and the initial surface drying is the best 8min, which shows that any one of tetra-n-propyl zirconate, tetra-n-butyl zirconate and bis (diethyl citrate) dipropoxy zirconium chelate can reduce the surface drying time, further reflects the effect of using the three at the same time, and can achieve the best surface drying time.
Example D:
step 1: adding 90 parts of alkoxy-terminated polydimethylsiloxane, 50 parts of nano calcium carbonate, 1 part of heat-resistant filler and 2 parts of UV (ultraviolet) absorbent into a mixer at room temperature, heating to 90 ℃, and stirring for 120min under a vacuum condition;
step 2: cooling to room temperature, adding 7 parts of cross-linking agent, 1 part of chain extender, 6 parts of catalyst and 0.5 part of coupling agent, stirring for 20min under a vacuum condition, and discharging; wherein the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and 1, 2-bis (triethoxysilyl) ethylene in a weight ratio of 1: 3 in combination.
Wherein, in the examples B1-B3, the alkoxy-terminated polydimethylsiloxane is the trimethoxy silane-terminated polydimethylsiloxane and the viscosity is 10000-80000 mPa & s according to the example A3 in the table 1; the heat-resistant filler is the combination of nano ferroferric oxide, nano copper oxide and nano nickel oxide; the chain extender is the combination of secondary aminobutyldimethoxysilane and secondary aminobutyldiethoxysilane; the coupling agent is the combination of N- (1, 3-dimethyl butylene) -3- (triethoxy silicon base) -1-propane imine and N- (1, 3-dimethyl butylene) -3- (trimethoxysilicon base) -1-propane imine; the catalyst is a combination of tetra-n-propyl zirconate, tetra-n-butyl zirconate and (diethyl citrate) dipropoxy zirconium chelate.
Example E:
step 1: adding 110 parts of alkoxy-terminated polydimethylsiloxane, 200 parts of nano calcium carbonate, 5 parts of heat-resistant filler and 0.2 part of UV absorbent into a mixer at room temperature, heating to 90 ℃, and stirring for 120min under a vacuum condition;
step 2: cooling to room temperature, adding 7 parts of cross-linking agent, 1 part of chain extender, 6 parts of catalyst and 0.5 part of coupling agent, stirring for 20min under a vacuum condition, and discharging; wherein the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and 1, 2-bis (triethoxysilyl) ethylene in a weight ratio of 1: 3 in combination.
Wherein, in the examples B1-B3, the alkoxy-terminated polydimethylsiloxane is the trimethoxy silane-terminated polydimethylsiloxane and the viscosity is 10000-80000 mPa & s according to the example A3 in the table 1; the heat-resistant filler is the combination of nano ferroferric oxide, nano copper oxide and nano nickel oxide; the chain extender is the combination of secondary aminobutyldimethoxysilane and secondary aminobutyldiethoxysilane; the coupling agent is the combination of N- (1, 3-dimethyl butylene) -3- (triethoxy silicon base) -1-propane imine and N- (1, 3-dimethyl butylene) -3- (trimethoxysilicon base) -1-propane imine; the catalyst is a combination of tetra-n-propyl zirconate, tetra-n-butyl zirconate and (diethyl citrate) dipropoxy zirconium chelate.
The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The technical principle of the present invention is described above in connection with specific embodiments. The description is made for the purpose of illustrating the principles of the invention and should not be construed in any way as limiting the scope of the invention. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (9)
1. The single-component dealcoholized room temperature vulcanized silicone sealant is characterized by comprising the following raw materials in parts by weight: 90-110 parts of alkoxy-terminated polydimethylsiloxane, 50-200 parts of nano calcium carbonate, 1-5 parts of heat-resistant filler, 0.1-2 parts of UV (ultraviolet) absorbent, 2-7 parts of cross-linking agent, 1-5 parts of chain extender, 1-6 parts of catalyst and 0.5-2 parts of coupling agent;
the alkoxy-terminated polydimethylsiloxane is at least one of trimethoxy silane-terminated polydimethylsiloxane, triethoxy silane-terminated polydimethylsiloxane, methyl dimethoxy silane-terminated polydimethylsiloxane, vinyl dimethoxy silane-terminated polydimethylsiloxane and phenyl dimethoxy silane-terminated polydimethylsiloxane;
the cross-linking agent is 1, 2-bis (trimethoxysilyl) ethylene and/or 1, 2-bis (triethoxysilyl) ethylene.
2. The silicone sealant according to claim 1, wherein the surface of the nano calcium carbonate is treated with fatty acid, resin acid or titanate, so that the nano calcium carbonate has a core-shell structure.
3. The silicone sealant of claim 1 wherein the viscosity of the alkoxy-terminated polydimethylsiloxane is 10000 to 80000 mPas.
4. The silicone sealant according to claim 1 wherein the UV absorber is an ultraviolet absorber of the benzotriazole type.
5. The silicone sealant of claim 1 wherein said heat resistant filler comprises: at least one of nano titanium oxide, nano ferric oxide, nano ferroferric oxide, nano copper oxide, nano nickel oxide, nano silicon nitride or nano carbon tube.
6. The silicone sealant according to claim 1, wherein the chain extender is at least one of dimethyldimethoxysilane, methylvinyldimethoxysilane, secondary aminobutyldimethoxysilane, secondary aminobutyldiethoxysilane.
7. The silicone sealant according to claim 1, wherein the coupling agent is gamma-aminopropyltriethoxysilane, gamma-aminopropyltrimethoxysilane, N- (2-aminoethyl) -3-aminopropyltriethoxysilane, N-N-butyl-3-aminopropyltrimethoxysilane, N-N-butyl-3-aminopropyltriethoxysilane, bis- [3- (trimethoxysilane) -propyl ] -amine, gamma-ureidopropyltrimethoxysilane, gamma-ureidopropyltriethoxysilane, bis- [3- (triethoxysilyl) -propyl ] -amine, 3-anilinopropyltrimethoxysilane, gamma-ureidopropyltrimethoxysilane, gamma-N-aminopropyltriethoxysilane, gamma-N-aminopropyl-triethoxysilane, gamma-N-aminopropyl-trimethoxysilane, gamma-N-, 3- (phenylamino) propyltriethoxysilane, 3-diethylaminopropyltrimethoxysilane, N- (1, 3-dimethylbutylidene) -3- (triethoxysilyl) -1-propaneimine, N- (1, 3-dimethylbutylidene) -3- (trimethylsilyloxy) -1-propaneimine, N-dimethyl-3-aminopropyltrimethoxysilane, 2- (3, 4-epoxycyclohexyl) ethyltrimethoxysilane, 3- (2, 3-epoxypropoxy) propyltrimethoxysilane and 3- (2, 3-epoxypropoxy) propyltriethoxysilane.
8. The silicone sealant according to any one of claims 1 to 7 wherein the catalyst comprises: tetra-n-propyl zirconate, tetra-n-butyl zirconate, and/or bis (diethyl citrate) dipropoxy zirconium chelate.
9. A method for preparing a one-component dealcoholized room temperature vulcanized silicone sealant, characterized by being used for preparing the silicone sealant according to any one of claims 1 to 8;
the preparation method comprises the following steps:
step 1: adding alkoxy-terminated polydimethylsiloxane, nano calcium carbonate, heat-resistant filler and UV (ultraviolet) absorbent into a mixer at room temperature, heating to 100-130 ℃, and stirring for 60-120min under a vacuum condition;
step 2: and cooling to room temperature, adding the cross-linking agent, the chain extender, the catalyst and the coupling agent, stirring for 20-50 min under a vacuum condition, and discharging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091964.3A CN112143451A (en) | 2020-10-13 | 2020-10-13 | Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011091964.3A CN112143451A (en) | 2020-10-13 | 2020-10-13 | Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112143451A true CN112143451A (en) | 2020-12-29 |
Family
ID=73951684
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202011091964.3A Pending CN112143451A (en) | 2020-10-13 | 2020-10-13 | Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112143451A (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113072809A (en) * | 2021-03-24 | 2021-07-06 | 深圳市新亚电子制程股份有限公司 | Single-component vulcanized silicone rubber and preparation method and application thereof |
| CN113150737A (en) * | 2021-02-07 | 2021-07-23 | 广东莱雅新化工科技有限公司 | Two-component organic silicon pouring sealant and preparation method thereof |
| CN113462350A (en) * | 2021-08-24 | 2021-10-01 | 广东高士高科实业有限公司 | Weather-resistant adhesive |
| CN114292519A (en) * | 2021-12-30 | 2022-04-08 | 广东高士高科实业有限公司 | Double-component silicone rubber and preparation method thereof |
| CN117210192A (en) * | 2023-09-13 | 2023-12-12 | 江西蓝星星火有机硅有限公司 | Single-component ethanol-removing type organic silicon sealant composition and preparation method thereof |
Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565596A (en) * | 2009-05-27 | 2009-10-28 | 深圳市百丽春粘胶实业有限公司 | Neutral silicone weather resistant glue formula and technique for preparing the same |
| JP2011037968A (en) * | 2009-08-10 | 2011-02-24 | Shin-Etsu Chemical Co Ltd | Two-part mixing type organopolysiloxane composition |
| CN103484056A (en) * | 2013-09-09 | 2014-01-01 | 广州市高士实业有限公司 | Dealcoholized silicone sealant and preparation method thereof |
| CN103725009A (en) * | 2014-01-02 | 2014-04-16 | 湖北环宇化工有限公司 | Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide rubber |
| CN104707568A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Porous monolithic material for chromatographic separation, and preparation method and application thereof |
| CN107286897A (en) * | 2017-07-05 | 2017-10-24 | 广州市高士实业有限公司 | A kind of Single-component low-viscosity dealcoholized type organic silicon potting adhesive and preparation method thereof |
| CN107325781A (en) * | 2016-04-29 | 2017-11-07 | 比亚迪股份有限公司 | Silicone sealant compositions, organosilicon sealant and preparation method thereof |
| CN107629756A (en) * | 2017-09-29 | 2018-01-26 | 山东三泽硅胶有限公司 | A kind of neutral room temperature sealing silicone sulfide glue |
| CN109181623A (en) * | 2018-08-07 | 2019-01-11 | 广州集泰化工股份有限公司 | A kind of rapid curing photovoltaic module silicone sealant and preparation method thereof |
| CN109280533A (en) * | 2018-08-09 | 2019-01-29 | 广州市高士实业有限公司 | Single-component dealcoholization-type transparent silicone sealant and its preparation method and application |
| CN109593510A (en) * | 2018-12-17 | 2019-04-09 | 杭州之江新材料有限公司 | Alkoxy end-capped organosilicon polymer, preparation method and single-component de-alcoholized organosilicon sealant |
| CN109666448A (en) * | 2018-11-15 | 2019-04-23 | 安徽兆拓新能源科技有限公司 | A kind of photovoltaic module dealcoholized type sealant and preparation method thereof |
| CN109762511A (en) * | 2018-12-25 | 2019-05-17 | 广州市高士实业有限公司 | A kind of single-component dealcoholization-type room temperature sealing silicone sulfide glue and preparation method thereof |
| CN114702676A (en) * | 2022-04-02 | 2022-07-05 | 深圳市康利邦科技有限公司 | Single-component low-viscosity fast-curing dealcoholization RTV silicone rubber and preparation method thereof |
-
2020
- 2020-10-13 CN CN202011091964.3A patent/CN112143451A/en active Pending
Patent Citations (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101565596A (en) * | 2009-05-27 | 2009-10-28 | 深圳市百丽春粘胶实业有限公司 | Neutral silicone weather resistant glue formula and technique for preparing the same |
| JP2011037968A (en) * | 2009-08-10 | 2011-02-24 | Shin-Etsu Chemical Co Ltd | Two-part mixing type organopolysiloxane composition |
| CN103484056A (en) * | 2013-09-09 | 2014-01-01 | 广州市高士实业有限公司 | Dealcoholized silicone sealant and preparation method thereof |
| CN104707568A (en) * | 2013-12-13 | 2015-06-17 | 中国科学院大连化学物理研究所 | Porous monolithic material for chromatographic separation, and preparation method and application thereof |
| CN103725009A (en) * | 2014-01-02 | 2014-04-16 | 湖北环宇化工有限公司 | Preparation method of fast curing dealcoholization type transparent room-temperature silicon sulfide rubber |
| CN107325781A (en) * | 2016-04-29 | 2017-11-07 | 比亚迪股份有限公司 | Silicone sealant compositions, organosilicon sealant and preparation method thereof |
| CN107286897A (en) * | 2017-07-05 | 2017-10-24 | 广州市高士实业有限公司 | A kind of Single-component low-viscosity dealcoholized type organic silicon potting adhesive and preparation method thereof |
| CN107629756A (en) * | 2017-09-29 | 2018-01-26 | 山东三泽硅胶有限公司 | A kind of neutral room temperature sealing silicone sulfide glue |
| CN109181623A (en) * | 2018-08-07 | 2019-01-11 | 广州集泰化工股份有限公司 | A kind of rapid curing photovoltaic module silicone sealant and preparation method thereof |
| CN109280533A (en) * | 2018-08-09 | 2019-01-29 | 广州市高士实业有限公司 | Single-component dealcoholization-type transparent silicone sealant and its preparation method and application |
| CN109666448A (en) * | 2018-11-15 | 2019-04-23 | 安徽兆拓新能源科技有限公司 | A kind of photovoltaic module dealcoholized type sealant and preparation method thereof |
| CN109593510A (en) * | 2018-12-17 | 2019-04-09 | 杭州之江新材料有限公司 | Alkoxy end-capped organosilicon polymer, preparation method and single-component de-alcoholized organosilicon sealant |
| CN109762511A (en) * | 2018-12-25 | 2019-05-17 | 广州市高士实业有限公司 | A kind of single-component dealcoholization-type room temperature sealing silicone sulfide glue and preparation method thereof |
| CN114702676A (en) * | 2022-04-02 | 2022-07-05 | 深圳市康利邦科技有限公司 | Single-component low-viscosity fast-curing dealcoholization RTV silicone rubber and preparation method thereof |
Non-Patent Citations (5)
| Title |
|---|
| ANNETTE MEINERS等: "Shedding light into adhesive optimization of material interfaces", 《APPL PHYS A》 * |
| 中国技术成果大全编辑部: "《中国技术成果大全》", 31 December 1992 * |
| 何业明 等: "烷氧基封端聚硅氧烷及其脱醇型RTV－1", 《有机硅材料》 * |
| 李万华 等: "脱醇型RTV-1硅橡胶的研制", 《有机硅材料》 * |
| 黄文润 等: "《液体硅橡胶》", 30 June 2009 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113150737A (en) * | 2021-02-07 | 2021-07-23 | 广东莱雅新化工科技有限公司 | Two-component organic silicon pouring sealant and preparation method thereof |
| CN113150737B (en) * | 2021-02-07 | 2022-11-11 | 广东莱雅新化工科技有限公司 | Two-component organic silicon pouring sealant and preparation method thereof |
| CN113072809A (en) * | 2021-03-24 | 2021-07-06 | 深圳市新亚电子制程股份有限公司 | Single-component vulcanized silicone rubber and preparation method and application thereof |
| CN113462350A (en) * | 2021-08-24 | 2021-10-01 | 广东高士高科实业有限公司 | Weather-resistant adhesive |
| CN113462350B (en) * | 2021-08-24 | 2022-04-08 | 广东高士高科实业有限公司 | Weather-resistant adhesive |
| CN114292519A (en) * | 2021-12-30 | 2022-04-08 | 广东高士高科实业有限公司 | Double-component silicone rubber and preparation method thereof |
| CN117210192A (en) * | 2023-09-13 | 2023-12-12 | 江西蓝星星火有机硅有限公司 | Single-component ethanol-removing type organic silicon sealant composition and preparation method thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112143451A (en) | Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof | |
| CN110305621B (en) | Dealcoholized room-temperature curing organosilicon sealant and preparation method thereof | |
| EP1167455B1 (en) | Room temperature rapid-curable silicone composition | |
| CA1323719C (en) | Moisture cured one-part rtv silicone sealant | |
| CN109280533B (en) | Single-component dealcoholized transparent silicone sealant and preparation method and application thereof | |
| JP6092491B1 (en) | Room temperature curable polyorganosiloxane composition and preparation method thereof | |
| CN104710962B (en) | Room temperature vulcanized silicone rubber adhesive and preparation method thereof | |
| CN109762511B (en) | Single-component dealcoholized room temperature vulcanized silicone sealant and preparation method thereof | |
| CN105111747B (en) | A kind of ketoxime removing type room temperature vulcanized silicone rubber of self-catalysis and preparation method thereof | |
| JPH0415263B2 (en) | ||
| CN114316897A (en) | Silicone sealant and preparation method thereof | |
| CN108192349A (en) | A kind of dealcoholized type room temperature vulcanized silicone rubber and preparation method thereof | |
| CN112210341B (en) | Double-vulcanization system building sealant and preparation method thereof | |
| CN112812733B (en) | Low-modulus high-elongation transparent pouring sealant composition and preparation method thereof | |
| JPS62252456A (en) | Room temperature-curable organopolysiloxane composition | |
| US20030065077A1 (en) | Room temperature rapid curing organopolysiloxane composition | |
| CN106634803A (en) | Autocatalytic and dealcoholized room-temperature vulcanized silicone rubber and preparation method thereof | |
| CN115785893A (en) | Low-dielectric organosilicon sealant and preparation method thereof | |
| CN111269578B (en) | High-strength room temperature vulcanized silicone rubber with stable storage and preparation method thereof | |
| CN114292519A (en) | Double-component silicone rubber and preparation method thereof | |
| JPH0211659A (en) | Sealing composition | |
| JP3970484B2 (en) | Room temperature curable sealing material composition for automobiles | |
| CN111763493A (en) | Alcohol-type adhesive and preparation method thereof | |
| CN106753204B (en) | Two-component silicone structural sealant and preparation method thereof | |
| CN116023407B (en) | Modified alkoxy silane and preparation method thereof, dealcoholized silicone weather-resistant sealant prepared from modified alkoxy silane and preparation method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20201229 |