CN108300407B - Low modR vulcanization neutral silicone weather proofing sealant of a kind of one-component de-oxime type and preparation method thereof - Google Patents
Low modR vulcanization neutral silicone weather proofing sealant of a kind of one-component de-oxime type and preparation method thereof Download PDFInfo
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- CN108300407B CN108300407B CN201810236867.5A CN201810236867A CN108300407B CN 108300407 B CN108300407 B CN 108300407B CN 201810236867 A CN201810236867 A CN 201810236867A CN 108300407 B CN108300407 B CN 108300407B
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- 229920001296 polysiloxane Polymers 0.000 title claims abstract description 49
- 239000000565 sealant Substances 0.000 title claims abstract description 41
- 230000007935 neutral effect Effects 0.000 title claims abstract description 31
- 101100514059 Escherichia coli (strain K12) modE gene Proteins 0.000 title claims abstract description 26
- 238000004073 vulcanization Methods 0.000 title claims abstract description 20
- 238000002360 preparation method Methods 0.000 title claims description 21
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 claims abstract description 28
- 229920005601 base polymer Polymers 0.000 claims abstract description 28
- 239000004970 Chain extender Substances 0.000 claims abstract description 24
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 21
- 239000007822 coupling agent Substances 0.000 claims abstract description 18
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 16
- 241000276489 Merlangius merlangus Species 0.000 claims abstract description 15
- 229940088417 precipitated calcium carbonate Drugs 0.000 claims abstract description 14
- 239000004205 dimethyl polysiloxane Substances 0.000 claims abstract description 12
- 235000013870 dimethyl polysiloxane Nutrition 0.000 claims abstract description 12
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 claims abstract description 12
- 239000003054 catalyst Substances 0.000 claims abstract description 9
- 229940008099 dimethicone Drugs 0.000 claims abstract description 9
- 238000007789 sealing Methods 0.000 claims abstract description 8
- 238000006073 displacement reaction Methods 0.000 claims abstract description 7
- 238000011049 filling Methods 0.000 claims abstract description 7
- BLRPTPMANUNPDV-UHFFFAOYSA-N Silane Chemical compound [SiH4] BLRPTPMANUNPDV-UHFFFAOYSA-N 0.000 claims description 34
- 229910000077 silane Inorganic materials 0.000 claims description 29
- ZWEHNKRNPOVVGH-UHFFFAOYSA-N 2-Butanone Chemical compound CCC(C)=O ZWEHNKRNPOVVGH-UHFFFAOYSA-N 0.000 claims description 20
- -1 γ-aminopropyl Chemical group 0.000 claims description 18
- 239000000463 material Substances 0.000 claims description 11
- 125000005646 oximino group Chemical group 0.000 claims description 10
- 238000003756 stirring Methods 0.000 claims description 10
- WYTZZXDRDKSJID-UHFFFAOYSA-N (3-aminopropyl)triethoxysilane Chemical compound CCO[Si](OCC)(OCC)CCCN WYTZZXDRDKSJID-UHFFFAOYSA-N 0.000 claims description 8
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 8
- 229920002554 vinyl polymer Polymers 0.000 claims description 8
- 239000004952 Polyamide Substances 0.000 claims description 7
- 229910000019 calcium carbonate Inorganic materials 0.000 claims description 7
- 230000018044 dehydration Effects 0.000 claims description 7
- 238000006297 dehydration reaction Methods 0.000 claims description 7
- 239000001301 oxygen Substances 0.000 claims description 7
- 229910052760 oxygen Inorganic materials 0.000 claims description 7
- 229920002647 polyamide Polymers 0.000 claims description 7
- 239000002253 acid Substances 0.000 claims description 6
- FWDBOZPQNFPOLF-UHFFFAOYSA-N ethenyl(triethoxy)silane Chemical compound CCO[Si](OCC)(OCC)C=C FWDBOZPQNFPOLF-UHFFFAOYSA-N 0.000 claims description 6
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 claims description 6
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 claims description 5
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 claims description 5
- NKSJNEHGWDZZQF-UHFFFAOYSA-N ethenyl(trimethoxy)silane Chemical compound CO[Si](OC)(OC)C=C NKSJNEHGWDZZQF-UHFFFAOYSA-N 0.000 claims description 5
- 229910052797 bismuth Inorganic materials 0.000 claims description 4
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 4
- 125000001997 phenyl group Chemical group [H]C1=C([H])C([H])=C(*)C([H])=C1[H] 0.000 claims description 4
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 claims description 4
- KSBAEPSJVUENNK-UHFFFAOYSA-L tin(ii) 2-ethylhexanoate Chemical compound [Sn+2].CCCCC(CC)C([O-])=O.CCCCC(CC)C([O-])=O KSBAEPSJVUENNK-UHFFFAOYSA-L 0.000 claims description 4
- POILWHVDKZOXJZ-ARJAWSKDSA-M (z)-4-oxopent-2-en-2-olate Chemical compound C\C([O-])=C\C(C)=O POILWHVDKZOXJZ-ARJAWSKDSA-M 0.000 claims description 3
- 125000004805 propylene group Chemical group [H]C([H])([H])C([H])([*:1])C([H])([H])[*:2] 0.000 claims description 3
- 229920005573 silicon-containing polymer Polymers 0.000 claims description 3
- MMEDJBFVJUFIDD-UHFFFAOYSA-N 2-[2-(carboxymethyl)phenyl]acetic acid Chemical compound OC(=O)CC1=CC=CC=C1CC(O)=O MMEDJBFVJUFIDD-UHFFFAOYSA-N 0.000 claims description 2
- IXAWXWACDBWEJF-UHFFFAOYSA-L C(CCCCCCC)[Sn+2]CCCCCCCC.C(CCCCCCCCCCC)(=O)[O-].C(CCCCCCCCCCC)(=O)[O-].[Sn+4] Chemical compound C(CCCCCCC)[Sn+2]CCCCCCCC.C(CCCCCCCCCCC)(=O)[O-].C(CCCCCCCCCCC)(=O)[O-].[Sn+4] IXAWXWACDBWEJF-UHFFFAOYSA-L 0.000 claims description 2
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 claims description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 2
- ISKQADXMHQSTHK-UHFFFAOYSA-N [4-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=C(CN)C=C1 ISKQADXMHQSTHK-UHFFFAOYSA-N 0.000 claims description 2
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 2
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 2
- 239000004305 biphenyl Substances 0.000 claims description 2
- 235000010290 biphenyl Nutrition 0.000 claims description 2
- 125000006267 biphenyl group Chemical group 0.000 claims description 2
- NSPSPMKCKIPQBH-UHFFFAOYSA-K bismuth;7,7-dimethyloctanoate Chemical compound [Bi+3].CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O.CC(C)(C)CCCCCC([O-])=O NSPSPMKCKIPQBH-UHFFFAOYSA-K 0.000 claims description 2
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 2
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 claims description 2
- 239000011976 maleic acid Substances 0.000 claims description 2
- ZUOUZKKEUPVFJK-UHFFFAOYSA-N phenylbenzene Natural products C1=CC=CC=C1C1=CC=CC=C1 ZUOUZKKEUPVFJK-UHFFFAOYSA-N 0.000 claims description 2
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 claims description 2
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims 2
- 239000005864 Sulphur Substances 0.000 claims 2
- LPPTUXUXRICRFZ-UHFFFAOYSA-N C(C)(=O)O[Si]OC(C)=O.CC=C Chemical compound C(C)(=O)O[Si]OC(C)=O.CC=C LPPTUXUXRICRFZ-UHFFFAOYSA-N 0.000 claims 1
- 235000021355 Stearic acid Nutrition 0.000 claims 1
- VDWOFHDQDYWAKE-UHFFFAOYSA-N acetic acid;dioctyltin Chemical compound CC(O)=O.CC(O)=O.CCCCCCCC[Sn]CCCCCCCC VDWOFHDQDYWAKE-UHFFFAOYSA-N 0.000 claims 1
- KRERSKRMGHWEMW-UHFFFAOYSA-N dioctyltin octanoic acid Chemical compound C(CCCCCCC)[Sn]CCCCCCCC.C(CCCCCCC)(=O)O KRERSKRMGHWEMW-UHFFFAOYSA-N 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims 1
- 125000001301 ethoxy group Chemical group [H]C([H])([H])C([H])([H])O* 0.000 claims 1
- 229910052742 iron Inorganic materials 0.000 claims 1
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims 1
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims 1
- 239000008117 stearic acid Substances 0.000 claims 1
- 239000004590 silicone sealant Substances 0.000 abstract description 23
- 238000007654 immersion Methods 0.000 abstract description 6
- 230000001070 adhesive effect Effects 0.000 abstract description 5
- 238000007731 hot pressing Methods 0.000 abstract description 5
- 230000006378 damage Effects 0.000 abstract description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 238000011084 recovery Methods 0.000 abstract description 3
- 230000000052 comparative effect Effects 0.000 description 24
- 239000013524 weatherproof sealant Substances 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 10
- 239000002994 raw material Substances 0.000 description 9
- 150000003384 small molecules Chemical class 0.000 description 8
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- 229920000642 polymer Polymers 0.000 description 5
- 239000000758 substrate Substances 0.000 description 5
- 239000003795 chemical substances by application Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 239000002480 mineral oil Substances 0.000 description 4
- 235000010446 mineral oil Nutrition 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 239000006087 Silane Coupling Agent Substances 0.000 description 3
- 230000007423 decrease Effects 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 238000011056 performance test Methods 0.000 description 3
- 230000002787 reinforcement Effects 0.000 description 3
- 150000004756 silanes Chemical group 0.000 description 3
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- FYHXNYLLNIKZMR-UHFFFAOYSA-N calcium;carbonic acid Chemical compound [Ca].OC(O)=O FYHXNYLLNIKZMR-UHFFFAOYSA-N 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 2
- 238000010622 cold drawing Methods 0.000 description 2
- 238000004132 cross linking Methods 0.000 description 2
- 229910021485 fumed silica Inorganic materials 0.000 description 2
- 239000007789 gas Substances 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 238000005286 illumination Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- PHQOGHDTIVQXHL-UHFFFAOYSA-N n'-(3-trimethoxysilylpropyl)ethane-1,2-diamine Chemical compound CO[Si](OC)(OC)CCCNCCN PHQOGHDTIVQXHL-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 230000009257 reactivity Effects 0.000 description 2
- 230000003014 reinforcing effect Effects 0.000 description 2
- 229910052710 silicon Inorganic materials 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000000377 silicon dioxide Substances 0.000 description 2
- 230000035882 stress Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 241000790917 Dioxys <bee> Species 0.000 description 1
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 description 1
- 101500021084 Locusta migratoria 5 kDa peptide Proteins 0.000 description 1
- PDNNQADNLPRFPG-UHFFFAOYSA-N N.[O] Chemical compound N.[O] PDNNQADNLPRFPG-UHFFFAOYSA-N 0.000 description 1
- YGHFDTDSFZTYBW-UHFFFAOYSA-N O-silylhydroxylamine Chemical class NO[SiH3] YGHFDTDSFZTYBW-UHFFFAOYSA-N 0.000 description 1
- 235000019082 Osmanthus Nutrition 0.000 description 1
- 241000333181 Osmanthus Species 0.000 description 1
- 229910003978 SiClx Inorganic materials 0.000 description 1
- 235000009470 Theobroma cacao Nutrition 0.000 description 1
- CQQXCSFSYHAZOO-UHFFFAOYSA-L [acetyloxy(dioctyl)stannyl] acetate Chemical compound CCCCCCCC[Sn](OC(C)=O)(OC(C)=O)CCCCCCCC CQQXCSFSYHAZOO-UHFFFAOYSA-L 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000003679 aging effect Effects 0.000 description 1
- 125000003342 alkenyl group Chemical group 0.000 description 1
- OBETXYAYXDNJHR-UHFFFAOYSA-N alpha-ethylcaproic acid Natural products CCCCC(CC)C(O)=O OBETXYAYXDNJHR-UHFFFAOYSA-N 0.000 description 1
- 150000001408 amides Chemical class 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 244000240602 cacao Species 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000009833 condensation Methods 0.000 description 1
- 230000005494 condensation Effects 0.000 description 1
- 238000001816 cooling Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002939 deleterious effect Effects 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 125000000524 functional group Chemical group 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- FFUAGWLWBBFQJT-UHFFFAOYSA-N hexamethyldisilazane Chemical compound C[Si](C)(C)N[Si](C)(C)C FFUAGWLWBBFQJT-UHFFFAOYSA-N 0.000 description 1
- 239000000413 hydrolysate Substances 0.000 description 1
- 230000003301 hydrolyzing effect Effects 0.000 description 1
- XHQSLVIGPHXVAK-UHFFFAOYSA-K iron(3+);octadecanoate Chemical compound [Fe+3].CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O.CCCCCCCCCCCCCCCCCC([O-])=O XHQSLVIGPHXVAK-UHFFFAOYSA-K 0.000 description 1
- 150000002576 ketones Chemical class 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000003389 potentiating effect Effects 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000000047 product Substances 0.000 description 1
- 239000012744 reinforcing agent Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- UQMGAWUIVYDWBP-UHFFFAOYSA-N silyl acetate Chemical compound CC(=O)O[SiH3] UQMGAWUIVYDWBP-UHFFFAOYSA-N 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009974 thixotropic effect Effects 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J183/00—Adhesives based on macromolecular compounds obtained by reactions forming in the main chain of the macromolecule a linkage containing silicon, with or without sulfur, nitrogen, oxygen, or carbon only; Adhesives based on derivatives of such polymers
- C09J183/04—Polysiloxanes
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/02—Non-macromolecular additives
- C09J11/04—Non-macromolecular additives inorganic
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
- C09J11/00—Features of adhesives not provided for in group C09J9/00, e.g. additives
- C09J11/08—Macromolecular 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
- 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
- C08K2201/002—Physical properties
- C08K2201/003—Additives being defined by their diameter
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Sealing Material Composition (AREA)
Abstract
The invention discloses a kind of low modRs of one-component de-oxime type to vulcanize neutral silicone weather proofing sealant, is grouped as by the group calculated by weight as follows: 160 ~ 240 parts of base polymer；30 ~ 80 parts of precipitated calcium carbonate；100 ~ 160 parts of powdered whiting；7 ~ 12 parts of thixotropic agent；12 ~ 30 parts of dimethicone；8 ~ 15 parts of chain extender；13 ~ 19 parts of crosslinking agent；2.5 ~ 5 parts of coupling agent；0.2 ~ 0.4 part of catalyst.The low modR vulcanization neutral silicone weather proofing sealant of the one-component de-oxime type being prepared has low stretch modulus, high resiliency and high elastic recovery rate, and excellent weatherability and good adhesive property, after the processing such as cold drawing-hot pressing, immersion, it is not in interfacial bonding destruction and cohesional failure, it may advantageously facilitate the sealing of the concrete extension joint of the high displacement facilities such as joint filling and road, bridge, airfield runway of the silicone sealant in super high-rise building.
Description
Technical field
The present invention relates to high molecule sealing materials technical fields, more particularly, to a kind of low modulus of one-component de-oxime type
Room temperature vulcanization neutral silicone weather proofing sealant and preparation method thereof.
Background technique
Modulus refers to material the ratio between stress and strain under stress.Modulus after silicone sealant complete cure can divide
It is three kinds: high-modulus, middle modulus and low modulus.The displacement capacity of low modulus silicone sealant can achieve+100/-50, have
The advantages that permanent deformation is big, elastic restoration ratio is higher, excellent cementability and weatherability, can be used for super high-rise building and fills out
The sealing of the concrete extension joint of facilities such as seam, large-sized concrete facility, road, bridge, airfield runway.The silicone of middle high-modulus
Sealant is broken since its modulus is larger, tearing strength is low so that it cohesion easily occurs after immersion, cold drawing hot pressing or immersion illumination
Bad or interfacial bonding is destroyed, and limits it in the application at larger displacement expansion joint.
Although low modulus silicone sealant have the advantages that it is so many, in the market still with the silicone sealant of middle high-modulus
Based on product.Chinese patent CN 104357005A " a kind of concrete road seam one-component silicone sealant and its preparation side
Method " provide a kind of low modulus one-component silicone sealant of road seam with low stretch modulus and good bonding,
For modulus all in 0.37~0.39MPa, the revision of the convention a to decimal is exactly 0.4MPa, is placed exactly in the critical of low modulus and middle high-modulus
Value.Chinese patent CN 106833503A " a kind of ketoxime removing type room temperature vulcanized silicone sealant of low modulus one-component and its preparation side
Method " provide a kind of low modulus silicone sealant of ketoxime removing type, although its modulus between 0.24~0.30MPa, is met low
The modulus requirement of modulus sealant, but surface drying speed is slower, it is undesirable in practical applications between 40~130min；Though
So its a small amount of White Mineral Oil being added can play the role of reducing modulus, increase elongation, and White Mineral Oil dosage is also little, but
It is the aging action by environment, White Mineral Oil can slowly ooze out sealant, contaminated substrate.Chinese patent CN 1618915A is " a kind of
Low modulus silicone sealant and its manufacturing method " provide a kind of low modulus silicone sealant, modulus is in 0.24~0.31MPa
Between, 15~25min of surface drying time.Its methyl ethylene two used (epsilon-caprolactams base) silanes chain extender and ammonia oxygen
Base silane class crosslinking agent, although reactivity is high, source limits, is expensive, is difficult largely to use in process of production.
Summary of the invention
The present invention is to overcome defect described in the above-mentioned prior art, provides a kind of one-component de-oxime type low modR vulcanization
Neutral silicone weather proofing sealant, obtained silicone weatherproof sealant have lower modulus, excellent weather-resistant performance, good
Good cementability and elastic restoration ratio does not need that White Mineral Oil is added to reduce modulus, and without using expensive methyl
(epsilon-caprolactams base) the silanes chain extender of vinyl two and aminoxy silanes class crosslinking agent.
Another object of the present invention is to provide a kind of low modR vulcanization neutral silicone of one-component de-oxime type is weather-proof close
The preparation method of sealing.
In order to solve the above technical problems, the technical solution adopted by the present invention is that:
A kind of low modR of one-component de-oxime type vulcanizes neutral silicone weather proofing sealant, by what is calculated by weight as follows
Group is grouped as:
The base polymer is that both ends are hydroxy-end capped dimethyl silicone polymer, 25 DEG C of the base polymer
At a temperature of viscosity be 80000~120000mPas；
The thixotropic agent is polyamide wax；
The preparation method of the low modR vulcanization neutral silicone weather proofing sealant of the one-component de-oxime type includes following step
It is rapid:
S1. base polymer, dimethicone and chain extender are mixed at a temperature of 45~55 DEG C, add carbonic acid
Calcium, thixotropic agent simultaneously stir dehydration, obtain base-material；
S2. the base-material of S1, crosslinking agent, coupling agent and catalyst are stirred evenly, the low modulus room of one-component de-oxime type is made
Temperature vulcanization neutral silicone weather proofing sealant.
Viscosity at a temperature of the present invention select 25 DEG C is the base polymer of 80000~120000mPas, selects this
The main reason for viscosity section is: when base polymer molecular weight is lower, silicone weatherproof sealant system crosslink density is larger,
The tensile strength and modulus of silicone weatherproof sealant are larger and elongation is lower, are unfavorable for preparing the silicon of low modulus high elongation rate
Ketone weather proofing sealant；But when base polymer viscosity is larger, the viscosity of silicone weatherproof sealant system can decline, and influence work
Skill operability, on the other hand, polymer decline the wetability of substrate surface, affect silicone weatherproof sealant and glue to substrate
Connecing property.Thixotropic agent selects polyamide wax, and the thixotropic nature of silicone sealant can be adjusted by being primarily due to polyamide wax, without having
There is reinforcement, will not influence the modulus of silicone sealant, traditional silicone sealant generally will use gas phase two in the preparation
Silica is thixotropic agent, and fumed silica has the function of reinforcement, can improve the modulus of silicone sealant；Prepare above-mentioned silicone
When sealant, chain extender is added separately to crosslinking agent, and base polymer elder generation and chain extender are expanded at a temperature of 45~55 DEG C
Chain reaction can reduce crosslink density after chain extension, reduce modulus by reducing crosslink density, and then sealant is made to have a high position
Shifting ability, when later period chain extender being avoided to be added together with crosslinking agent, base polymer, which is preferentially crosslinked with crosslinking agent, to react, and expands
Chain agent is unable to fully that chain extending reaction occurs, and keeps chain extension effect unobvious.
To sum up, inventor is the study found that by the viscosity at a temperature of selecting 25 DEG C for 80000~120000mPas's
When base polymer and selecting polyamide wax as thixotropic agent, and cooperate with other components, and preparing by base polymer first with
At a temperature of 45~55 DEG C chain extending reaction occurs for chain extender, and crosslinking agent is added afterwards, finally the low modulus of one-component de-oxime type obtained
Room temperature vulcanization neutral silicone weather proofing sealant fully meet " GB/T 22083-2008 building sealant classification and require " and
The performance requirement of+100/-50LM, the silicone sealant in " GB/T 14683-2017 silicone and modified silicone building sealant "
With low stretch modulus, high resiliency and high elastic recovery rate and excellent weatherability and good adhesive property, in cold drawing-
After the processing such as hot pressing, immersion, is not in interfacial bonding destruction and cohesional failure, may advantageously facilitate silicone sealant in Super High
The sealing of the concrete extension joint of the high displacement facilities such as joint filling and road, bridge, airfield runway in building.
The both ends are that hydroxy-end capped dimethyl silicone polymer is α, alpha, omega-dihydroxy polydimethyl siloxane.
Preferably, the powdered whiting and precipitated calcium carbonate weight ratio are 1~5:1, and the precipitated calcium carbonate is averaged
Partial size is 0.05~0.2 μm, and the average grain diameter of the powdered whiting is 0.5~4 μm.
Preferably, the moisture content of the precipitated calcium carbonate and powdered whiting is less than or equal to 0.18%.
The average grain diameter of powdered whiting is 0.5~4 μm, and the average grain diameter of precipitated calcium carbonate is 0.05~0.2 μm, heavy
Calcium carbonate and precipitated calcium carbonate obtain the average grain diameter of mixed calcium carbonate, since powdered whiting contains by weight mixing
Amount is higher, so the average grain diameter of calcium carbonate is larger in the present invention, that is, the specific surface area of calcium carbonate is smaller, and calcium carbonate is made to exist
Filler is acted mainly as in system rather than reinforcing agent, to further decrease modulus.
Preferably, the chain extender is two butanone oximino silane of diphenyl, two butanone oximino silane of aminomethyl phenyl, methyl second
Two butanone oximino silane of alkenyl, methyl ethylene dipropyl ketoximinosilanes, two butanone oximino silane of dimethyl, methyl ethylene two
One or more of acetoxylsilane.
The above chain extender is compared with acid amide type chain extender, source more extensively, cheaper and storage stability it is also opposite
It is better.For the problem that its chain extension activity is relatively low, can be reached by reacting and arranging in pairs or groups weak reinforced filling in a heated condition
To the effect for reducing modulus.
Preferably, the coupling agent is vinyltriethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-shrink
Glycerol ether oxygen propyl trimethoxy silicane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane, γ-methacryloxypropyl
Base propyl trimethoxy silicane, three second of vinyl trimethoxysilane oligomer, vinyltriethoxysilane and γ-aminopropyl
Oligomer, γ-aminopropyltrimethoxysilane or its oligomer of oxysilane, gamma-aminopropyl-triethoxy-silane and γ-contracting
One or more of the oligomer of water glycerol ether oxygen propyl trimethoxy silicane.
Wherein, vinyltriethoxysilane, gamma-aminopropyl-triethoxy-silane, γ-glycidyl ether oxygen propyl front three
Oxysilane, N- (β-aminoethyl)-γ-aminopropyltrimethoxysilane, γ-methacryloxypropyl trimethoxy silicon
Alkane, γ-aminopropyltrimethoxysilane are small molecule coupling agent.
Wherein, vinyl trimethoxysilane oligomer, vinyltriethoxysilane and gamma-aminopropyl-triethoxy silicon
Oligomer, γ-aminopropyltrimethoxysilane oligomer, gamma-aminopropyl-triethoxy-silane and the γ-glycidyl ether oxygen of alkane
The oligomer of propyl trimethoxy silicane is the oligomeric compound coupling agent that small molecule coupling agent is obtained by reaction.
The silane low polymer is that substance made from dehydration condensation occurs for 2~4 small molecule silane coupling agents.It is preferred that
For the oligomer containing tetra functional and six degrees of functionality, the elasticity and elongation of silicone sealant can be improved.In addition, silane is low
For polymers compares small molecule silane coupling agent, volatility is smaller, therefore more environmentally friendly.
Preferably, the coupling agent is vinyl trimethoxysilane oligomer, vinyltriethoxysilane and γ-ammonia
The oligomer of propyl-triethoxysilicane, γ-aminopropyltrimethoxysilane oligomer, gamma-aminopropyl-triethoxy-silane with
One or more of γ-glycidyl ether oxygen propyl trimethoxy silicane oligomer.
Relative to small molecule coupling agent, the oligomer for selecting small molecule coupling agent to obtain by reaction is as coupling agent, system
The low modR vulcanization neutral silicone weather proofing sealant of the one-component de-oxime type obtained, can be into one on the basis of with low modulus
Step improves adhesive property.Above-mentioned oligomer hydrolyzes, and produces the hydrolysate containing 4~6 silicone hydroxyls, can greatly improve
The crosslink density at interface increases interface cohesive force, so that sealant is while elongation at break improves, tensile strength is unlikely to
It is too low.
Preferably, viscosity of dimethicone at a temperature of 25 DEG C is 100~2000mm2/s。
Preferably, the crosslinking agent is methyl tributanoximo silane, vinyl tributyl ketoximyl silane, three butanone of propyl
Oximino silane, phenyl tributanoximo silane, four butanone oximino silanes, methyl tri acetylacetonate oximino silane, vinyl tri acetylacetonate oxime
One or more of base silane.
Preferably, the catalyst is dibutyl tin dilaurate, dibutyltin diacetate, stannous octoate, tin dilaurate
Dioctyl tin, dioctyl tin diacetate, two isooctyl acid tin of dibutyl, stannous 2-ethylhexoate, maleic acid list octanoic acid two are pungent
One or more of Ji Xi, ferric stearate, cobalt octoate, isooctyl acid bismuth, moon osmanthus Jiao acid bismuth, bismuth neodecanoate.
The preparation method of the low modR vulcanization neutral silicone weather proofing sealant of above-mentioned one-component de-oxime type, including walk as follows
It is rapid:
S1. base polymer, dimethicone and chain extender are mixed at a temperature of 45~55 DEG C, add carbonic acid
Calcium, thixotropic agent simultaneously stir dehydration, obtain base-material；
S2. the base-material of S1, crosslinking agent, coupling agent and catalyst are stirred evenly, the low modulus room of one-component de-oxime type is made
Temperature vulcanization neutral silicone weather proofing sealant.
Preferably, the time being mixed in S1. is 20~30min.
Preferably, the condition that dehydration is stirred in S1. is the stirring dehydration in the case where 120 DEG C, vacuum degree are 0.08~0.1MPa
100~300min.
Preferably, to stir in planet kettle, it is 0.06~0.1MPa that the condition of stirring, which is in vacuum degree, for stirring in S2.,
30~80min is reacted under 200~800rpm of revolving speed.
The present invention protects the low modR vulcanization neutral silicone weather proofing sealant of above-mentioned one-component de-oxime type in superelevation simultaneously
The application in high displacement joint filling in layer building.
The present invention also protects the low modR vulcanization neutral silicone weather proofing sealant of above-mentioned one-component de-oxime type in road, bridge
Beam, airfield runway concrete extension joint sealing in application.
Compared with prior art, the beneficial effects of the present invention are:
The present invention passes through base polymer and choosing of the viscosity for 80000~120000mPas at a temperature of selecting 25 DEG C
By base polymer elder generation and chain extender at 45~55 DEG C when selecting polyamide wax as thixotropic agent, and cooperate with other components, and preparing
At a temperature of chain extending reaction occurs, crosslinking agent is added afterwards, the one-component de-oxime type being finally prepared low modR vulcanization is neutral
Silicone weatherproof sealant fully meets " classification of GB/T 22083-2008 building sealant and requirement " and " GB/T 14683-2017
Silicone and modified silicone building sealant " in+100/-50LM performance requirement, the silicone sealant have low stretch modulus,
High resiliency and high elastic recovery rate and excellent weatherability and good adhesive property are handled in cold drawing-hot pressing, immersion etc.
Afterwards, be not in interfacial bonding destruction and cohesional failure, may advantageously facilitate high displacement of the silicone sealant in super high-rise building
The sealing of the concrete extension joint of the facilities such as joint filling and road, bridge, airfield runway.
Specific embodiment
Further illustrate the present invention below in conjunction with specific embodiment, but embodiment the present invention is not done it is any type of
It limits.
The equal cocoa of raw material in embodiment is by being commercially available；
Unless stated otherwise, the present invention uses reagent, method and apparatus for the art conventional reagent, method and are set
It is standby.
In embodiment and comparative example, base polymer α, alpha, omega-dihydroxy polydimethyl siloxane；
In crosslinking agent, m (phenyl tributanoximo silane): m (vinyl tributyl ketoximyl silane)=1:2 mixture
It is by mass；M (phenyl tributanoximo silane): m (vinyl tributyl ketoximyl silane)=1:3 mixture, m (first
Base tributanoximo silane): m (vinyl tributyl ketoximyl silane)=3.5:1 mixture, is equally by mass；
In coupling agent, m (vinyltrimethoxysilane): m (gamma-aminopropyl-triethoxy-silane)=1:1's is oligomeric
Object, the oligomer of m (gamma-aminopropyl-triethoxy-silane): m (γ-glycidyl ether oxygen propyl trimethoxy silicane)=2:1,
By mass.
Examples 1 to 5
Prepare the low modR vulcanization neutral silicone weather proofing sealant of one-component de-oxime type:
The raw material usage amount of Examples 1 to 5 is as shown in table 1；
Reaction condition is as shown in table 2 in the preparation step of Examples 1 to 5；
Preparation step:
S1. by α, alpha, omega-dihydroxy polydimethyl siloxane, dimethicone and chain extender are mixed at a temperature of T1 (DEG C) and are stirred
T1 (min) is mixed, adding precipitated calcium carbonate, powdered whiting, thixotropic agent in T2 (DEG C), vacuum degree is stirring under P1 (MPa)
It is dehydrated t2 (min), obtains base-material after cooling；
S2. at room temperature, the base-material of S1. is added in planet stirring kettle, adds crosslinking agent, coupling agent and catalyst,
It is P2 (MPa) in vacuum degree, reacts t3 (min) under revolving speed r (rpm), it is neutral has both obtained the single-component room temperature vulcanized low modulus
Silicone weatherproof sealant.
The raw material usage amount (unit: part (weight)) of 1 Examples 1 to 5 of table
Reaction condition in the preparation step of 2 Examples 1 to 5 of table
Comparative example 1
Comparative example 1 the difference from embodiment 1 is that, the viscosity of the base polymer used is 50000mPas；Other are former
Expect that usage amount and preparation step are same as Example 1.
Comparative example 2
Comparative example 2 the difference from embodiment 1 is that, the viscosity of the base polymer used is 150000mPas；Other
Raw material usage amount and preparation step are same as Example 1.
Comparative example 3
Comparative example 3 the difference from embodiment 1 is that, the usage amount of base polymer is 100 parts；Other raw material usage amounts and
Preparation step is same as Example 1.
Comparative example 4
Comparative example 4 the difference from embodiment 1 is that, the silica that thixotropic agent selects the surface HMDS modified, specific surface area
For 150~220m2/g；Other raw material usage amounts and preparation step are same as Example 1.
Comparative example 5
Comparative example 5 the difference from embodiment 1 is that, the usage amount of precipitated calcium carbonate is 120 parts, the use of powdered whiting
Amount is 60 parts；Other raw material usage amounts and preparation step are same as Example 1.
Comparative example 6
Comparative example 6 the difference from embodiment 1 is that, temperature T1 in step S1. (DEG C) is 25 DEG C；Other raw material usage amounts and
Preparation step is same as Example 1.
Comparative example 7
Comparative example 7 the difference from embodiment 1 is that, chain extender is not added in step S1., in step S2. chain extender and hand over
Connection agent is added simultaneously；Other raw material usage amounts and preparation step are same as Example 1.
Performance test
By silicone sealant made from Examples 1 to 5 and comparative example 1~7 according to+100/- in GB/T 14683-2017
50 grades of requirement is tested；
The test result of silicone sealant made from Examples 1 to 5 is as shown in table 3；
The test result of silicone sealant made from comparative example 1~7 is as shown in table 4.
The performance test results of 3 Examples 1 to 5 of table
The performance test results of 4 comparative example 1~7 of table
In table 3,100% stretch modulus≤0.303MPa of Examples 1 to 4, elastic restoration ratio 90% or so, much larger than mark
Alignment request >=80%, and workability is good.Furthermore, it may have excellent weatherability and good cementability, by illumination,
It is still fine with the cementability of substrate after the conditions processing such as immersion and cold drawing hot pressing.
The modulus of embodiment 5, elastic restoration ratio and cementability is stretched surely etc. and all meets that " GB/T 22083-2008 building is close
Sealing classification and require " and " GB/T 14683-2017 silicone and modified silicone building sealant " in low modulus sealant
Performance requirement.But since it uses conventional small molecule coupling agent to make tackifier, 3 silicon of band are only generated after hydrolyzing
The intermediate of hydroxyl.When carrying out tensile bond test, happens is that interfacial failure when elongation 400% or so, and implement
Example 1 is happens is that cohesional failure.Illustrate the Efficient Adhesive Promotion of oligomer than small molecule silane coupling agent than get well.
The test result of comparative example 1~2 and embodiment 1 illustrates that the base polymer of 50000mPas viscosity is due to molecule
Chain is short compared with the base polymer of 80000mPas viscosity, causes crosslink density bigger than normal, therefore intensity and modulus is all larger.And it is basic
When the molecular weight of polymer is up to 150000mPas, the base polymer of 150000mPas viscosity since strand is longer,
Modulus is lower；But since polymer molecular weight is excessive, lead to its worsened wettability to substrate, so there is interfacial bonding
It destroys；Meanwhile it is extrudability be also deteriorated, reduce its workability.
By comparative example 3 it is found that opposite, the dosage of filler then increases, and filler when base polymer usage amount reduces
With certain reinforcing effect, therefore reinforcing effect is more preferable, and tensile strength, modulus and hardness etc. all increase accordingly.About thixotroping
Agent, there are also fumed silicas for thixotropic agent commonly used in the art, and still, fumed silica replaces polyamide wax as thixotropic agent
When being added to silicone weatherproof sealant of the invention, the modulus of silicone weatherproof sealant is caused to increase, this is because gas phase dioxy
SiClx has the function of reinforcement, as shown in the experimental result of comparative example 4 in table 4.
In addition, by comparative example 5 and embodiment 1 it is found that being mended although selected precipitated calcium carbonate is weak reinforced filling
Potent fruit is better than powdered whiting；When increasing precipitated calcium carbonate dosage, reducing powdered whiting dosage, modulus and hardness etc.
It will increase.In addition, reducing powdered whiting dosage, also there is deleterious effect to the extrudability of system.Therefore, precipitated calcium carbonate
It needs to control in amount ranges of the invention with the usage amount of powdered whiting.
Elder generation's chain extension post-crosslinking of the present invention can reduce crosslink density after chain extension, reduce modulus by reducing crosslink density,
But by comparative example 6 and embodiment 1 as it can be seen that when the chain extending reaction temperature of system is lower, chain extension rate is slower, it is same anti-
Between seasonable, chain extension is not enough, it is difficult to crosslink density be effectively reduced, so that the modulus of final silicone weatherproof sealant obtained
It is larger.If chain extension effect is poor, obtained without first chain extension, but in chain extender and crosslinking agent while addition system
The modulus of silicone weatherproof sealant is bigger than normal, as a result lives such as comparative example 7 main reason is that chain extender is two functional group's substances
Property be lower than the crosslinking agent of trifunctional, when the two simultaneously in addition system when, chain extender does not have enough time also that abundant chain extension occurs, and hands over
Connection agent just reacts with base polymer, causes chain extending reaction insufficient, therefore modulus is higher.On the other hand, chain extender
Reactivity is low compared with crosslinking agent, when together with crosslinking agent in addition system, can reduce crosslinking rate, extend surface drying time.
Obviously, the above embodiment of the present invention be only to clearly illustrate example of the present invention, and not be pair
The restriction of embodiments of the present invention.For those of ordinary skill in the art, may be used also on the basis of the above description
To make other variations or changes in different ways.There is no necessity and possibility to exhaust all the enbodiments.It is all this
Made any modifications, equivalent replacements, and improvements etc., should be included in the claims in the present invention within the spirit and principle of invention
Protection scope within.
Claims (9)
1. a kind of low modR of one-component de-oxime type vulcanizes neutral silicone weather proofing sealant, which is characterized in that by as follows by weight
The group that amount part calculates is grouped as:
160 ~ 240 parts of base polymer；
30 ~ 80 parts of precipitated calcium carbonate；
100 ~ 160 parts of powdered whiting；
7 ~ 12 parts of thixotropic agent；
12 ~ 30 parts of dimethicone；
8 ~ 15 parts of chain extender；
13 ~ 19 parts of crosslinking agent；
2.5 ~ 5 parts of coupling agent；
0.2 ~ 0.4 part of catalyst；
The base polymer is that both ends are hydroxy-end capped dimethyl silicone polymer, at a temperature of 25 DEG C of the base polymer
Viscosity be 80000 ~ 120000mPas；
The thixotropic agent is polyamide wax；
The coupling agent is three ethoxy of vinyl trimethoxysilane oligomer, vinyltriethoxysilane and γ-aminopropyl
Oligomer, γ-aminopropyltrimethoxysilane oligomer, gamma-aminopropyl-triethoxy-silane and the γ-glycidol of base silane
One or more of oligomer of ether oxygen propyl trimethoxy silicane；
The preparation method of the low modR vulcanization neutral silicone weather proofing sealant of the one-component de-oxime type includes the following steps:
S1. base polymer, dimethicone and chain extender are mixed at a temperature of 45 ~ 55 DEG C, add calcium carbonate,
Thixotropic agent simultaneously stirs dehydration, obtains base-material；
S2. the base-material of S1, crosslinking agent, coupling agent and catalyst are stirred evenly, the low modR sulphur of one-component de-oxime type is made
Change neutral silicone weather proofing sealant.
2. the low modR of one-component de-oxime type according to claim 1 vulcanizes neutral silicone weather proofing sealant, feature
It is, the powdered whiting and precipitated calcium carbonate weight ratio are 1 ~ 5:1, the average grain diameter of the precipitated calcium carbonate is 0.05 ~
0.2 μm, the average grain diameter of the powdered whiting is 0.5 ~ 4 μm.
3. the low modR of one-component de-oxime type according to claim 1 vulcanizes neutral silicone weather proofing sealant, feature
It is, the chain extender is two butanone oximino silane of diphenyl, two butanone oximino silane of aminomethyl phenyl, two butanone of methyl ethylene
Oximino silane, methyl ethylene dipropyl ketoximinosilanes, two butanone oximino silane of dimethyl, methyl ethylene diacetoxy silicon
One or more of alkane.
4. the low modR of one-component de-oxime type according to claim 1 vulcanizes neutral silicone weather proofing sealant, feature
It is, viscosity of dimethicone at a temperature of 25 DEG C is 100 ~ 2000mm2/s。
5. the low modR of one-component de-oxime type according to claim 1 vulcanizes neutral silicone weather proofing sealant, feature
Be, the crosslinking agent be methyl tributanoximo silane, vinyl tributyl ketoximyl silane, propyl tributanoximo silane,
Phenyl tributanoximo silane, four butanone oximino silanes, methyl tri acetylacetonate oximino silane, in vinyl tri acetylacetonate oximino silane
It is one or more of.
6. the low modR of one-component de-oxime type according to claim 1 vulcanizes neutral silicone weather proofing sealant, feature
It is, the catalyst is dibutyl tin dilaurate, dibutyltin diacetate, stannous octoate, tin dilaurate dioctyl tin, two
Acetic acid dioctyl tin, two isooctyl acid tin of dibutyl, stannous 2-ethylhexoate, maleic acid list octanoic acid dioctyl tin, stearic acid
One or more of iron, cobalt octoate, isooctyl acid bismuth, Yue Gui Jiao acid bismuth, bismuth neodecanoate.
7. the system of the low modR vulcanization neutral silicone weather proofing sealant of the described in any item one-component de-oxime types of claim 1 ~ 6
Preparation Method, which comprises the steps of:
S1. base polymer, dimethicone and chain extender are mixed at a temperature of 45 ~ 55 DEG C, add calcium carbonate,
Thixotropic agent simultaneously stirs dehydration, obtains base-material；
S2. the base-material of S1, crosslinking agent, coupling agent and catalyst are stirred evenly, the low modR sulphur of one-component de-oxime type is made
Change neutral silicone weather proofing sealant.
8. the low modR vulcanization neutral silicone weather proofing sealant of the described in any item one-component de-oxime types of claim 1 ~ 6 is super
The application in high displacement joint filling in skyscraper.
9. the low modR vulcanization neutral silicone weather proofing sealant of the described in any item one-component de-oxime types of claim 1 ~ 6 is in road
Road, bridge, airfield runway concrete extension joint sealing in application.
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| CN108997967A (en) * | 2018-08-09 | 2018-12-14 | 广州集泰化工股份有限公司 | A kind of high displacement performance fire prevention silicone sealant and preparation method thereof suitable for skyscraper |
| CN109370509A (en) * | 2018-08-30 | 2019-02-22 | 广东菊兰新型材料科技有限公司 | A kind of sealant and preparation method that low modulus high elongation rate high thixotropic is ageing-resistant |
| CN109054727A (en) * | 2018-08-31 | 2018-12-21 | 广东菊兰新型材料科技有限公司 | A kind of sealant and preparation method that low modulus high elongation rate Self-leveling is ageing-resistant |
| CN109762510B (en) * | 2018-12-13 | 2021-02-09 | 广州市高士实业有限公司 | Silicone weather-resistant adhesive with high displacement capacity and preparation method thereof |
| CN110511596A (en) * | 2019-09-09 | 2019-11-29 | 青州宇信钙业股份有限公司 | A kind of silicone sealant high elongation rate composite Nano filler and preparation method thereof |
| CN110791101B (en) * | 2019-11-19 | 2021-07-06 | 广州信粤新材料科技有限公司 | Organic silicon waterproof anti-aging material and preparation method thereof |
| CN110982482B (en) * | 2019-12-25 | 2021-08-17 | 广西华纳新材料科技有限公司 | Low-modulus high-elongation silicone sealant with good adhesion and preparation method thereof |
| CN113234414A (en) * | 2021-04-30 | 2021-08-10 | 广州市高士实业有限公司 | Preparation method and application of low-modulus deketoxime type weather-resistant adhesive |
| CN113355044A (en) * | 2021-06-25 | 2021-09-07 | 郑州中原思蓝德高科股份有限公司 | Composite silicone sealant |
| CN114149783B (en) * | 2021-12-14 | 2023-05-30 | 杭州之江有机硅化工有限公司 | Low-temperature-resistant neutral silicone sealant and preparation method thereof |
| CN116589972B (en) * | 2023-07-18 | 2023-09-29 | 山东沃赛新材料科技有限公司 | Preparation method of high-performance fireproof high-temperature-resistant organic silicon sealant |
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