CN116218202A - Sealing ring material and preparation method thereof - Google Patents
Sealing ring material and preparation method thereof Download PDFInfo
- Publication number
- CN116218202A CN116218202A CN202310053294.3A CN202310053294A CN116218202A CN 116218202 A CN116218202 A CN 116218202A CN 202310053294 A CN202310053294 A CN 202310053294A CN 116218202 A CN116218202 A CN 116218202A
- Authority
- CN
- China
- Prior art keywords
- parts
- sealing ring
- polyol
- hours
- flame retardant
- 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.)
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- 239000000463 material Substances 0.000 title claims abstract description 42
- 238000007789 sealing Methods 0.000 title claims abstract description 38
- 238000002360 preparation method Methods 0.000 title abstract description 12
- 229920005862 polyol Polymers 0.000 claims abstract description 26
- 150000003077 polyols Chemical class 0.000 claims abstract description 26
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 25
- 239000000945 filler Substances 0.000 claims abstract description 22
- 239000007787 solid Substances 0.000 claims abstract description 20
- 238000006243 chemical reaction Methods 0.000 claims abstract description 18
- 229920000642 polymer Polymers 0.000 claims abstract description 15
- 239000004970 Chain extender Substances 0.000 claims abstract description 14
- 239000006260 foam Substances 0.000 claims abstract description 13
- 239000004088 foaming agent Substances 0.000 claims abstract description 13
- 239000012948 isocyanate Substances 0.000 claims abstract description 13
- 150000002513 isocyanates Chemical class 0.000 claims abstract description 13
- 239000003381 stabilizer Substances 0.000 claims abstract description 13
- 239000002994 raw material Substances 0.000 claims abstract description 10
- 238000000034 method Methods 0.000 claims abstract description 7
- 239000003063 flame retardant Substances 0.000 claims description 39
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 claims description 38
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 36
- YMWUJEATGCHHMB-UHFFFAOYSA-N Dichloromethane Chemical compound ClCCl YMWUJEATGCHHMB-UHFFFAOYSA-N 0.000 claims description 27
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 26
- ZMXDDKWLCZADIW-UHFFFAOYSA-N N,N-Dimethylformamide Chemical compound CN(C)C=O ZMXDDKWLCZADIW-UHFFFAOYSA-N 0.000 claims description 18
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 claims description 18
- PFKFTWBEEFSNDU-UHFFFAOYSA-N carbonyldiimidazole Chemical compound C1=CN=CN1C(=O)N1C=CN=C1 PFKFTWBEEFSNDU-UHFFFAOYSA-N 0.000 claims description 18
- 239000007822 coupling agent Substances 0.000 claims description 17
- 238000002156 mixing Methods 0.000 claims description 17
- 238000003756 stirring Methods 0.000 claims description 17
- 229910052757 nitrogen Inorganic materials 0.000 claims description 14
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- VTHJTEIRLNZDEV-UHFFFAOYSA-L magnesium dihydroxide Chemical compound [OH-].[OH-].[Mg+2] VTHJTEIRLNZDEV-UHFFFAOYSA-L 0.000 claims description 12
- 239000000347 magnesium hydroxide Substances 0.000 claims description 12
- 229910001862 magnesium hydroxide Inorganic materials 0.000 claims description 12
- 238000010438 heat treatment Methods 0.000 claims description 10
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Chemical compound CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 claims description 9
- HZRKWVJBFLUASO-UHFFFAOYSA-N P(=O)(O)(O)O.CC1(COP(OC1)Cl)C Chemical compound P(=O)(O)(O)O.CC1(COP(OC1)Cl)C HZRKWVJBFLUASO-UHFFFAOYSA-N 0.000 claims description 9
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 claims description 9
- 150000002009 diols Chemical class 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 9
- UUEWCQRISZBELL-UHFFFAOYSA-N 3-trimethoxysilylpropane-1-thiol Chemical compound CO[Si](OC)(OC)CCCS UUEWCQRISZBELL-UHFFFAOYSA-N 0.000 claims description 8
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 7
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 claims description 6
- DDRPCXLAQZKBJP-UHFFFAOYSA-N furfurylamine Chemical compound NCC1=CC=CO1 DDRPCXLAQZKBJP-UHFFFAOYSA-N 0.000 claims description 6
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 6
- 229920001400 block copolymer Polymers 0.000 claims description 5
- 238000001816 cooling Methods 0.000 claims description 5
- 229920001451 polypropylene glycol Polymers 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 4
- 238000000498 ball milling Methods 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 4
- 229920001223 polyethylene glycol Polymers 0.000 claims description 4
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 3
- 238000001035 drying Methods 0.000 claims description 3
- 238000001914 filtration Methods 0.000 claims description 3
- FMIORWSKZKIJQZ-UHFFFAOYSA-N phenol;pyrrole-2,5-dione Chemical compound OC1=CC=CC=C1.O=C1NC(=O)C=C1 FMIORWSKZKIJQZ-UHFFFAOYSA-N 0.000 claims description 3
- WNLRTRBMVRJNCN-UHFFFAOYSA-L adipate(2-) Chemical compound [O-]C(=O)CCCCC([O-])=O WNLRTRBMVRJNCN-UHFFFAOYSA-L 0.000 claims description 2
- 230000008569 process Effects 0.000 abstract description 4
- 230000003014 reinforcing effect Effects 0.000 abstract description 4
- 230000002441 reversible effect Effects 0.000 abstract description 3
- 229920001730 Moisture cure polyurethane Polymers 0.000 abstract description 2
- 230000032683 aging Effects 0.000 abstract description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- JOXIMZWYDAKGHI-UHFFFAOYSA-N toluene-4-sulfonic acid Chemical compound CC1=CC=C(S(O)(=O)=O)C=C1 JOXIMZWYDAKGHI-UHFFFAOYSA-N 0.000 description 10
- 238000012360 testing method Methods 0.000 description 8
- -1 polyoxypropylene Polymers 0.000 description 5
- KOPMZTKUZCNGFY-UHFFFAOYSA-N 1,1,1-triethoxybutane Chemical compound CCCC(OCC)(OCC)OCC KOPMZTKUZCNGFY-UHFFFAOYSA-N 0.000 description 3
- 230000009471 action Effects 0.000 description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 description 3
- 229940043237 diethanolamine Drugs 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000012796 inorganic flame retardant Substances 0.000 description 3
- 239000004014 plasticizer Substances 0.000 description 3
- 229920005830 Polyurethane Foam Polymers 0.000 description 2
- 239000012752 auxiliary agent Substances 0.000 description 2
- 238000006352 cycloaddition reaction Methods 0.000 description 2
- 125000003827 glycol group Chemical group 0.000 description 2
- 230000014759 maintenance of location Effects 0.000 description 2
- 229920002635 polyurethane Polymers 0.000 description 2
- 239000004814 polyurethane Substances 0.000 description 2
- 239000011496 polyurethane foam Substances 0.000 description 2
- 239000004800 polyvinyl chloride Substances 0.000 description 2
- 229920000915 polyvinyl chloride Polymers 0.000 description 2
- 230000002195 synergetic effect Effects 0.000 description 2
- 229920001169 thermoplastic Polymers 0.000 description 2
- 239000004416 thermosoftening plastic Substances 0.000 description 2
- SJECZPVISLOESU-UHFFFAOYSA-N 3-trimethoxysilylpropan-1-amine Chemical compound CO[Si](OC)(OC)CCCN SJECZPVISLOESU-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- 238000006845 Michael addition reaction Methods 0.000 description 1
- 239000006087 Silane Coupling Agent Substances 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000003712 anti-aging effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 230000018044 dehydration Effects 0.000 description 1
- 238000006297 dehydration reaction Methods 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 239000006261 foam material Substances 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- 238000009413 insulation Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 231100000053 low toxicity Toxicity 0.000 description 1
- 239000000395 magnesium oxide Substances 0.000 description 1
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 1
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 238000004064 recycling Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- 239000003566 sealing material Substances 0.000 description 1
- 239000000779 smoke Substances 0.000 description 1
- 238000010561 standard procedure Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 125000003396 thiol group Chemical group [H]S* 0.000 description 1
Classifications
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
- C08L75/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/4009—Two or more macromolecular compounds not provided for in one single group of groups C08G18/42 - C08G18/64
- C08G18/4018—Mixtures of compounds of group C08G18/42 with compounds of group C08G18/48
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
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- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
- C08G18/4236—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups
- C08G18/4238—Polycondensates having carboxylic or carbonic ester groups in the main chain containing only aliphatic groups derived from dicarboxylic acids and dialcohols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
- C08G18/4808—Mixtures of two or more polyetherdiols
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
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- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4825—Polyethers containing two hydroxy groups
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4854—Polyethers containing oxyalkylene groups having four carbon atoms in the alkylene group
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6603—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6607—Compounds of groups C08G18/42, C08G18/48, or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/74—Polyisocyanates or polyisothiocyanates cyclic
- C08G18/76—Polyisocyanates or polyisothiocyanates cyclic aromatic
- C08G18/7614—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring
- C08G18/7621—Polyisocyanates or polyisothiocyanates cyclic aromatic containing only one aromatic ring being toluene diisocyanate including isomer mixtures
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- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L75/00—Compositions of polyureas or polyurethanes; Compositions of derivatives of such polymers
- C08L75/04—Polyurethanes
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G2101/00—Manufacture of cellular products
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- 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
- C08K2003/2217—Oxides; Hydroxides of metals of magnesium
- C08K2003/2224—Magnesium hydroxide
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/02—Flame or fire retardant/resistant
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
- Y02E60/10—Energy storage using batteries
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- Chemical & Material Sciences (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Organic Chemistry (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a sealing ring material and a preparation method thereof, which belong to the technical field of sealing ring materials and comprise the following raw materials in parts by weight: 95-100 parts of polyol a, 0.5-0.6 part of chain extender, 2.5-3 parts of foaming agent, 1.2-1.4 parts of foam stabilizer, 10-11 parts of solid filler and 1.1-1.2 parts of cross-linking agent; 60-70 parts of polyol b and 35-40 parts of isocyanate; the self-made cross-linking agent is added in the process of preparing the sealing ring material, and the cross-linking agent contains a reversible covalent bond, so that on one hand, the cross-linking agent can participate in the reaction of the polyurethane prepolymer to generate a hydroxyl end-capped structure, and the addition of the cross-linking agent has a good reinforcing effect on the sealing ring; on the other hand, the hydroxyl-terminated branched polymer has the advantages of low viscosity, high solubility and the like, the dispersibility is better, and the cavity structure in the structure can better cover free radicals, so that the aging of the sealing ring material is inhibited.
Description
Technical Field
The invention belongs to the technical field of sealing ring materials, and particularly relates to a sealing ring material and a preparation method thereof.
Background
The selection of the sealing ring material has important significance on the sealing performance and the service life, a large amount of auxiliary agents are added to improve the performance of the sealing ring material, but the addition of the auxiliary agents can reduce the partial service performance of the sealing ring to a certain extent; for example, chinese patent No. 103524917a discloses a polyvinyl chloride sealing tape composition for refrigerator, in which a high molecular weight polyvinyl chloride is used as a base resin, and a large amount of plasticizer is added to improve processability and prolong service life, but the added plasticizer is easily separated out to the surface during long-term use, reducing quality and use value of the product. Patent CN109111558A discloses a low smoke low toxicity flame retardant rigid polyurethane foam material, the polyurethane foam material has good heat insulation performance, the added inorganic flame retardant plays a role in condensed phase flame retardance, but the problems of poor dispersibility of the flame retardant, reduced rebound resilience of the foam material, and influence on sealing performance and service life are also existed.
Therefore, a sealing ring material with better performance, good durability and high rebound resilience is needed to meet the use requirement.
Disclosure of Invention
The invention aims to provide a sealing ring material and a preparation method thereof:
the aim of the invention can be achieved by the following technical scheme:
a sealing ring material comprises the following raw materials in parts by weight: 95-100 parts of polyol a, 0.5-0.6 part of chain extender, 2.5-3 parts of foaming agent, 1.2-1.4 parts of foam stabilizer, 10-11 parts of solid filler and 1.1-1.2 parts of cross-linking agent; 60-70 parts of polyol b and 35-40 parts of isocyanate;
the cross-linking agent is prepared by the following steps:
mixing a hydroxyl-terminated branched polymer with N, N' -carbonyldiimidazole, adding the mixture into N, N-dimethylformamide, mixing, setting the temperature to be 60 ℃ under the protection of nitrogen, stirring and reacting for 3 hours, adding furfuryl amine after the reaction is finished, keeping the temperature unchanged and continuously stirring and reacting for 6 hours under the protection of nitrogen, adding maleimido phenol, heating to 80 ℃, and continuously reacting for 24 hours to obtain the cross-linking agent. The hydroxyl-terminated branched polymer is applied to a cross-linking agent, and plays roles of reinforcing and reversible cross-linking in the modified polyurethane foaming material. The polyurethane material is endowed with excellent elastic properties and thermoplastic processability.
Further, the mass ratio of the hydroxyl-terminated branched polymer to the N, N' -carbonyldiimidazole is 1:1, a step of; the molar ratio of the N, N' -carbonyldiimidazole, furfuryl amine and maleimide phenol is 1:1:1, a step of; the ratio of N, N-dimethylformamide to the amount of the hydroxyl-terminated branched polymer used was 1g:20mL.
Further, the solid filler is prepared by the steps of:
adding magnesium hydroxide and a flame-retardant coupling agent into ethanol, performing ball milling for 3 hours, taking out, filtering, and drying to obtain a solid filler; wherein, the dosage ratio of the magnesium hydroxide, the flame retardant coupling agent and the ethanol is 1g:1g:20mL.
Further, the flame retardant coupling agent is prepared by the steps of:
adding 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate and acrylamide into dichloromethane, adding triethylamine, stirring for 16h under the condition of nitrogen protection and 0 ℃, concentrating under reduced pressure after stirring is finished to remove dichloromethane, extracting with water and ethyl acetate, and concentrating to obtain a flame retardant; the molar ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the acrylamide to the triethylamine is 1:1:1, a step of; the dosage ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the dichloromethane is 1g:10mL;
under the protection of nitrogen, adding the flame retardant and gamma-mercaptopropyl trimethoxy silane into toluene, heating to 40 ℃, adding triethylamine, and reacting for 4 hours to obtain the flame retardant coupling agent. The dosage ratio of the flame retardant, the gamma-mercaptopropyl trimethoxysilane, the triethylamine and the toluene is 2.2g:2g:1g:30mL. And (3) reacting the double bond in the flame retardant with the sulfhydryl group in the gamma-mercaptopropyl trimethoxy silane to obtain the flame retardant coupling agent. In order to meet different requirements, a solid filler is prepared, a self-made flame retardant and a silane coupling agent gamma-mercaptopropyl trimethoxy silane undergo a mercapto-alkene Michael addition reaction to obtain a flame retardant coupling agent, the prepared flame retardant coupling agent is used for treating magnesium hydroxide to obtain the solid filler, the dispersibility of the magnesium hydroxide serving as the filler in raw materials is improved, the reinforcing effect of the solid filler serving as the filler is improved, more prominently, the flame retardant coupling agent and the magnesium hydroxide have a synergistic flame retardant effect, the flame retardant coupling agent serving as an organic flame retardant has a good effect of promoting charring of N, P, S elements in the structure; the magnesium hydroxide is used as an inorganic flame retardant, when heated, the magnesium hydroxide can release bound water to absorb heat, the decomposed magnesium oxide can also improve the fire resistance of the synthetic material, and the combination of the organic flame retardant and the inorganic flame retardant can exert the synergistic effect of flame retardance to the greatest extent. The addition of the solid filler also reduces the addition of the additional flame retardant and simultaneously improves the dispersion effect of the solid filler.
Further, the polyol a is polytetrahydrofuran diol; the polyol b is one of polyoxypropylene glycol and polyethylene glycol adipate glycol; the relative molecular masses of polytetrahydrofuran diol, polyoxypropylene diol and polyethylene glycol adipate diol were all 1000.
Further, the chain extender is one of ethylene glycol and propylene glycol.
Further, the foaming agent is water; the foam stabilizer is a polysiloxane-alkylene oxide block copolymer.
Further, the isocyanate is one of 2, 4-toluene diisocyanate and toluene diisocyanate.
A preparation method of a sealing ring material comprises the following steps:
firstly, mixing polyol a, a chain extender, a foaming agent, a foam stabilizer, a solid filler and a cross-linking agent according to parts by weight, and stirring for 30min at 25 ℃ to obtain a component A;
step two, adding the polyol B into a reaction kettle, dehydrating for 2 hours in vacuum, then adding isocyanate at the temperature of 50 ℃, heating to 80 ℃, reacting for 2 hours, and cooling to 25 ℃ to obtain a component B;
and thirdly, mixing the component A and the component B, pouring the mixture into a mold, curing and demolding at the temperature of 25-30 ℃ to obtain the sealing ring material.
The invention has the beneficial effects that:
the self-made cross-linking agent is added in the process of preparing the sealing ring material, so that the performance of the sealing ring material is improved. The cross-linking agent contains Diel s-Al der reversible covalent bonds, namely D-A cycloaddition products, can participate in the reaction of polyurethane prepolymer on one hand to generate a hydroxyl end-capped structure, and has good reinforcing effect on a sealing ring by adding the cross-linking agent, so that the mechanical property of the sealing ring material is improved; the sealing ring material prepared by taking the cross-linking agent as the raw material has good secondary and tertiary thermoplastic processing performance, which means that the recycling rate of the prepared sealing ring material is high after being recycled; on the other hand, the hydroxyl-terminated branched polymer has the advantages of low viscosity, high solubility and the like, the hydroxyl-terminated branched polymer is used as a raw material, a D-A cycloaddition structure is introduced through reaction, the hydroxyl-terminated branched polymer is used as a main body, the dispersibility of the cross-linking agent is better, and the cavity structure in the cross-linking agent structure can better cover free radicals, so that the ageing of a sealing ring material is inhibited, and the use of an anti-aging agent is reduced. In addition, the raw materials which are not added with plasticizers, micromolecular flame retardants and the like and are easy to separate out to the surface can be applied to various household sealing rings such as medical seals, refrigerators and the like and anti-collision protection materials.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below in conjunction with the embodiments of the present invention, and it is apparent that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The present example provides a crosslinker prepared by the steps of:
mixing 0.01mo of triethoxymethyl propane, 0.03mo of diethanol amine and 0.01g of p-toluenesulfonic acid, setting the temperature to 140 ℃ and carrying out normal pressure reaction for 2 hours under the protection of nitrogen, continuously adding 0.03mo of triethoxymethyl propane and 0.03g of p-toluenesulfonic acid in the reduced pressure reaction for 2 hours, continuously adding 0.06mo of diethanol amine and 0.04g of p-toluenesulfonic acid in the reduced pressure reaction for 2 hours, continuously adding 0.06mo of triethoxymethyl propane and 0.05g of p-toluenesulfonic acid in the reduced pressure reaction for 2 hours, continuously adding 0.12mo of diethanol amine and 0.08g of p-toluenesulfonic acid in the reduced pressure reaction for 2 hours, cooling to room temperature after the reduced pressure reaction for 2 hours, and obtaining the hydroxyl-terminated branched polymer.
Mixing a hydroxyl-terminated branched polymer with N, N' -carbonyldiimidazole, adding the mixture into N, N-dimethylformamide, mixing, setting the temperature to be 60 ℃ under the protection of nitrogen, stirring and reacting for 3 hours, adding furfuryl amine after the reaction is finished, keeping the temperature unchanged and continuously stirring and reacting for 6 hours under the protection of nitrogen, adding maleimido phenol, heating to 80 ℃, and continuously reacting for 24 hours to obtain a cross-linking agent; the mass ratio of the hydroxyl-terminated branched polymer to the N, N' -carbonyldiimidazole is 1:1, a step of; the molar ratio of the N, N' -carbonyldiimidazole, furfuryl amine and maleimide phenol is 1:1:1, a step of; the ratio of N, N-dimethylformamide to the amount of the hydroxyl-terminated branched polymer used was 1g:20mL.
Example 2
This example provides a solid filler prepared by the steps of:
adding 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate and acrylamide into dichloromethane, adding triethylamine, stirring for 16h under the condition of nitrogen protection and 0 ℃, concentrating under reduced pressure after stirring is finished to remove dichloromethane, extracting with water and ethyl acetate, and concentrating to obtain a flame retardant; the molar ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the acrylamide to the triethylamine is 1:1:1, a step of; the dosage ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the dichloromethane is 1g:10mL;
under the protection of nitrogen, adding the flame retardant and gamma-mercaptopropyl trimethoxy silane into toluene, heating to 40 ℃, adding triethylamine, and reacting for 4 hours to obtain the flame retardant coupling agent. The dosage ratio of the flame retardant, the gamma-mercaptopropyl trimethoxysilane, the triethylamine and the toluene is 2.2g:2g:1g:30mL.
Adding magnesium hydroxide and a flame-retardant coupling agent into ethanol, performing ball milling for 3 hours, wherein the average particle size of the magnesium hydroxide after ball milling is 153.4nm, taking out, filtering and drying to obtain a solid filler; wherein, the dosage ratio of the magnesium hydroxide, the flame retardant coupling agent and the ethanol is 1g:1g:20mL.
Comparative example 1
Compared with example 2, the flame retardant coupling agent is replaced by gamma-aminopropyl trimethoxysilane, and the rest raw materials and the preparation process are the same as those of example 2.
Example 3
The embodiment provides a preparation method of a sealing ring material, which comprises the following steps:
firstly, mixing 95 parts of polyol a, 0.5 part of chain extender, 2.5 parts of foaming agent, 1.2 parts of foam stabilizer, 10 parts of solid filler prepared in example 2 and 1.1 parts of cross-linking agent prepared in example 1 according to parts by weight, and stirring for 30min at 25 ℃ to obtain a component A; polyol a is polytetrahydrofuran diol (mn=1000); the chain extender is glycol; the foaming agent is water; the foam stabilizer is polysiloxane-alkylene oxide block copolymer;
step two, adding 65 parts of polyol B into a reaction kettle, dehydrating for 2 hours in vacuum, then adding 35 parts of isocyanate at 50 ℃, heating to 80 ℃, reacting for 2 hours, and cooling to 25 ℃ to obtain a component B; polyol b is polyoxypropylene diol (mn=1000); the isocyanate is 2, 4-toluene diisocyanate;
and thirdly, mixing the component A and the component B, pouring the mixture into a mold, curing and demolding at the temperature of 25 ℃ to obtain the sealing ring material.
Example 4
The embodiment provides a preparation method of a sealing ring material, which comprises the following steps:
firstly, mixing 98 parts of polyol a, 0.5 part of chain extender, 3 parts of foaming agent, 1.3 parts of foam stabilizer, 10 parts of solid filler prepared in example 2 and 1.2 parts of cross-linking agent prepared in example 1 according to parts by weight, and stirring for 30min at 25 ℃ to obtain a component A; polyol a is polytetrahydrofuran diol (mn=1000); the chain extender is glycol; the foaming agent is water; the foam stabilizer is a polysiloxane-alkylene oxide block copolymer;
step two, adding 68 parts of polyol B into a reaction kettle, dehydrating for 2 hours in vacuum, then adding 38 parts of isocyanate at 50 ℃, heating to 80 ℃, reacting for 2 hours, and cooling to 25 ℃ to obtain a component B; polyol b is polyoxypropylene diol (mn=1000); the isocyanate is 2, 4-toluene diisocyanate;
and thirdly, mixing the component A and the component B, pouring the mixture into a mold, curing and demolding at the temperature of 28 ℃ to obtain the sealing ring material.
Example 5
The embodiment provides a preparation method of a sealing ring material, which comprises the following steps:
firstly, mixing 100 parts of polyol a, 0.6 part of chain extender, 3 parts of foaming agent, 1.4 parts of foam stabilizer, 11 parts of solid filler prepared in example 2 and 1.2 parts of cross-linking agent prepared in example 1 according to parts by weight, and stirring for 30min at 25 ℃ to obtain a component A; polyol a is polytetrahydrofuran diol (mn=1000); the chain extender is propylene glycol; the foaming agent is water; the foam stabilizer is a polysiloxane-alkylene oxide block copolymer;
step two, 70 parts of polyol B is added into a reaction kettle, vacuum dehydration is carried out for 2 hours, 40 parts of isocyanate is added under the condition that the temperature is 50 ℃, the temperature is raised to 80 ℃, the reaction is carried out for 2 hours, and the temperature is reduced to 25 ℃ to obtain a component B; polyol b is polyethylene glycol adipate diol (mn=1000); the isocyanate is toluene diisocyanate;
and thirdly, mixing the component A and the component B, pouring the mixture into a mold, curing and demolding at the temperature of 30 ℃ to obtain the sealing ring material.
Comparative example 2
Comparative example compared to example 5, the solid filler was changed to the sample prepared in comparative example 1, and the remaining raw materials and the preparation process were kept the same.
Comparative example 3
Comparative example compared with comparative example 2, the crosslinking agent was replaced with a chain extender, and the remaining raw materials and the preparation process were kept the same as comparative example 2.
Performance tests were performed on examples 3-5 and comparative examples 2-3:
elongation at break and tensile strength at break test: testing according to GB/T528-1998 standard, preparing sample type 2, and testing conditions by standard method; and testing the elongation at break retention after 72 hours of ultraviolet radiation;
compression set test: according to GB/T7759.1-2015, testing at normal temperature (23 ℃) and testing normal-temperature rebound by adopting an A-type sample;
flame retardant rating: flame retardant rating was tested according to UL94 flammability standards.
The test results are shown in table 1:
TABLE 1
| Project | Example 3 | Example 4 | Example 5 | Comparative example 2 | Comparative example 3 |
| Elongation at break (%) | 421 | 422 | 424 | 418 | 397 |
| Tensile strength at break (MPa) | 2.54 | 2.55 | 2.57 | 2.49 | 2.57 |
| Elongation at break retention (%) | 95.5 | 95.7 | 95.9 | 93.7 | 74.6 |
| Rebound at normal temperature (%) | 58.2 | 58.5 | 58.6 | 58.1 | 50.7 |
| Flame retardant rating | V-1 | V-1 | V-1 | V-2 | V-2 |
As can be seen from Table 1, the sealing material prepared by the invention has good elasticity, good sealing performance and durability, and can meet certain flame-retardant requirements.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.
Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A sealing ring material comprises the following raw materials in parts by weight: 95-100 parts of polyol a, 0.5-0.6 part of chain extender, 2.5-3 parts of foaming agent, 1.2-1.4 parts of foam stabilizer, 10-11 parts of solid filler and 1.1-1.2 parts of cross-linking agent; 60-70 parts of polyol b and 35-40 parts of isocyanate;
the cross-linking agent is prepared by the following steps:
mixing a hydroxyl-terminated branched polymer with N, N' -carbonyldiimidazole, adding the mixture into N, N-dimethylformamide, mixing, setting the temperature to be 60 ℃ under the protection of nitrogen, stirring and reacting for 3 hours, adding furfuryl amine after the reaction is finished, keeping the temperature unchanged and continuously stirring and reacting for 6 hours under the protection of nitrogen, adding maleimido phenol, heating to 80 ℃, and continuously reacting for 24 hours to obtain the cross-linking agent.
2. A gasket material according to claim 1, wherein the mass ratio of hydroxyl-terminated branched polymer to N, N' -carbonyldiimidazole is 1:1, a step of; the molar ratio of the N, N' -carbonyldiimidazole, furfuryl amine and maleimide phenol is 1:1:1, a step of; the ratio of N, N-dimethylformamide to the amount of the hydroxyl-terminated branched polymer used was 1g:20mL.
3. A gasket material according to claim 1, wherein the solid filler is prepared by the steps of:
adding magnesium hydroxide and a flame-retardant coupling agent into ethanol, performing ball milling for 3 hours, taking out, filtering, and drying to obtain a solid filler; wherein, the dosage ratio of the magnesium hydroxide, the flame retardant coupling agent and the ethanol is 1g:1g:20mL.
4. A gasket material according to claim 3, wherein the flame retardant coupling agent is prepared by:
adding 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate and acrylamide into dichloromethane, adding triethylamine, stirring for 16h under the condition of nitrogen protection and 0 ℃, concentrating under reduced pressure after stirring is finished to remove dichloromethane, extracting with water and ethyl acetate, and concentrating to obtain a flame retardant; the molar ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the acrylamide to the triethylamine is 1:1:1, a step of; the dosage ratio of the 5, 5-dimethyl-2-chloro-1, 3, 2-dioxaphosphorinane phosphate to the dichloromethane is 1g:10mL;
under the protection of nitrogen, adding a flame retardant and gamma-mercaptopropyl trimethoxy silane into toluene, heating to 40 ℃, adding triethylamine, and reacting for 4 hours to obtain a flame retardant coupling agent; the dosage ratio of the flame retardant, the gamma-mercaptopropyl trimethoxysilane, the triethylamine and the toluene is 2.2g:2g:1g:30mL.
5. A gasket material according to claim 1, wherein the polyol a is polytetrahydrofuran diol; the polyol b is one of polyoxypropylene glycol and polyethylene glycol adipate glycol.
6. The gasket material of claim 1 wherein said chain extender is one of ethylene glycol and propylene glycol.
7. A gasket material according to claim 1, wherein the foaming agent is water; the foam stabilizer is a polysiloxane-alkylene oxide block copolymer.
8. The gasket material of claim 1 wherein the isocyanate is one of 2, 4-toluene diisocyanate and toluene diisocyanate.
9. The method for preparing a sealing ring material according to claim 1, comprising the steps of:
firstly, mixing the polyol a, the chain extender, the foaming agent, the foam stabilizer, the solid filler and the cross-linking agent according to parts by weight, and stirring for 30min at 25 ℃ to obtain a component A;
step two, adding the polyol B into a reaction kettle, dehydrating for 2 hours in vacuum, then adding isocyanate at the temperature of 50 ℃, heating to 80 ℃, reacting for 2 hours, and cooling to 25 ℃ to obtain a component B;
and thirdly, mixing the component A and the component B, pouring the mixture into a mold, curing and demolding at the temperature of 25-30 ℃ to obtain the sealing ring material.
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