CN113773549A - Polyurethane foam waste activated micro powder and preparation method thereof, polyurethane soft foam and preparation method and application thereof - Google Patents
Polyurethane foam waste activated micro powder and preparation method thereof, polyurethane soft foam and preparation method and application thereof Download PDFInfo
- Publication number
- CN113773549A CN113773549A CN202111114772.4A CN202111114772A CN113773549A CN 113773549 A CN113773549 A CN 113773549A CN 202111114772 A CN202111114772 A CN 202111114772A CN 113773549 A CN113773549 A CN 113773549A
- Authority
- CN
- China
- Prior art keywords
- polyurethane
- polyurethane foam
- preparation
- foam waste
- polyol
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 239000002699 waste material Substances 0.000 title claims abstract description 117
- 229920005830 Polyurethane Foam Polymers 0.000 title claims abstract description 104
- 239000011496 polyurethane foam Substances 0.000 title claims abstract description 104
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 75
- 239000004814 polyurethane Substances 0.000 title claims abstract description 75
- 239000000843 powder Substances 0.000 title claims abstract description 72
- 239000006260 foam Substances 0.000 title claims abstract description 67
- 238000002360 preparation method Methods 0.000 title claims abstract description 52
- 229920005862 polyol Polymers 0.000 claims abstract description 61
- 150000003077 polyols Chemical class 0.000 claims abstract description 58
- 238000010008 shearing Methods 0.000 claims abstract description 25
- 125000002887 hydroxy group Chemical group [H]O* 0.000 claims abstract description 9
- 238000002156 mixing Methods 0.000 claims description 27
- 239000002994 raw material Substances 0.000 claims description 27
- RGSFGYAAUTVSQA-UHFFFAOYSA-N Cyclopentane Chemical compound C1CCCC1 RGSFGYAAUTVSQA-UHFFFAOYSA-N 0.000 claims description 18
- IMNIMPAHZVJRPE-UHFFFAOYSA-N triethylenediamine Chemical compound C1CN2CCN1CC2 IMNIMPAHZVJRPE-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 17
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 16
- 229920000570 polyether Polymers 0.000 claims description 16
- 239000012948 isocyanate Substances 0.000 claims description 14
- 150000002513 isocyanates Chemical class 0.000 claims description 14
- 238000005187 foaming Methods 0.000 claims description 13
- SJRJJKPEHAURKC-UHFFFAOYSA-N N-Methylmorpholine Chemical compound CN1CCOCC1 SJRJJKPEHAURKC-UHFFFAOYSA-N 0.000 claims description 12
- 229920002545 silicone oil Polymers 0.000 claims description 12
- 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 12
- 229910052751 metal Inorganic materials 0.000 claims description 11
- 239000002184 metal Substances 0.000 claims description 11
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 10
- DMEGYFMYUHOHGS-UHFFFAOYSA-N heptamethylene Natural products C1CCCCCC1 DMEGYFMYUHOHGS-UHFFFAOYSA-N 0.000 claims description 9
- 239000003054 catalyst Substances 0.000 claims description 8
- QWTDNUCVQCZILF-UHFFFAOYSA-N isopentane Chemical compound CCC(C)C QWTDNUCVQCZILF-UHFFFAOYSA-N 0.000 claims description 8
- 150000003839 salts Chemical class 0.000 claims description 8
- 239000012970 tertiary amine catalyst Substances 0.000 claims description 8
- OFBQJSOFQDEBGM-UHFFFAOYSA-N Pentane Chemical compound CCCCC OFBQJSOFQDEBGM-UHFFFAOYSA-N 0.000 claims description 7
- 239000005062 Polybutadiene Substances 0.000 claims description 7
- 239000004088 foaming agent Substances 0.000 claims description 7
- 229920002857 polybutadiene Polymers 0.000 claims description 7
- 229920000515 polycarbonate Polymers 0.000 claims description 7
- 239000004417 polycarbonate Substances 0.000 claims description 7
- FKTHNVSLHLHISI-UHFFFAOYSA-N 1,2-bis(isocyanatomethyl)benzene Chemical compound O=C=NCC1=CC=CC=C1CN=C=O FKTHNVSLHLHISI-UHFFFAOYSA-N 0.000 claims description 6
- -1 ester polyol Chemical class 0.000 claims description 6
- 229920005906 polyester polyol Polymers 0.000 claims description 6
- 239000003381 stabilizer Substances 0.000 claims description 6
- 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 6
- SXWZSWLBMCNOPC-UHFFFAOYSA-M potassium;6-methylheptanoate Chemical compound [K+].CC(C)CCCCC([O-])=O SXWZSWLBMCNOPC-UHFFFAOYSA-M 0.000 claims description 5
- UPMLOUAZCHDJJD-UHFFFAOYSA-N 4,4'-Diphenylmethane Diisocyanate Chemical compound C1=CC(N=C=O)=CC=C1CC1=CC=C(N=C=O)C=C1 UPMLOUAZCHDJJD-UHFFFAOYSA-N 0.000 claims description 4
- UEEJHVSXFDXPFK-UHFFFAOYSA-N N-dimethylaminoethanol Chemical compound CN(C)CCO UEEJHVSXFDXPFK-UHFFFAOYSA-N 0.000 claims description 4
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical compound CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 4
- 229960002887 deanol Drugs 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
- AFABGHUZZDYHJO-UHFFFAOYSA-N dimethyl butane Natural products CCCC(C)C AFABGHUZZDYHJO-UHFFFAOYSA-N 0.000 claims description 4
- 239000012972 dimethylethanolamine Substances 0.000 claims description 4
- 229940049964 oleate Drugs 0.000 claims description 4
- ZQPPMHVWECSIRJ-KTKRTIGZSA-N oleic acid Chemical compound CCCCCCCC\C=C/CCCCCCCC(O)=O ZQPPMHVWECSIRJ-KTKRTIGZSA-N 0.000 claims description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- ZXHZWRZAWJVPIC-UHFFFAOYSA-N 1,2-diisocyanatonaphthalene Chemical compound C1=CC=CC2=C(N=C=O)C(N=C=O)=CC=C21 ZXHZWRZAWJVPIC-UHFFFAOYSA-N 0.000 claims description 3
- HVCNXQOWACZAFN-UHFFFAOYSA-N 4-ethylmorpholine Chemical compound CCN1CCOCC1 HVCNXQOWACZAFN-UHFFFAOYSA-N 0.000 claims description 3
- RSWGJHLUYNHPMX-UHFFFAOYSA-N Abietic-Saeure Natural products C12CCC(C(C)C)=CC2=CCC2C1(C)CCCC2(C)C(O)=O RSWGJHLUYNHPMX-UHFFFAOYSA-N 0.000 claims description 3
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 3
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 3
- KHPCPRHQVVSZAH-HUOMCSJISA-N Rosin Natural products O(C/C=C/c1ccccc1)[C@H]1[C@H](O)[C@@H](O)[C@@H](O)[C@@H](CO)O1 KHPCPRHQVVSZAH-HUOMCSJISA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 239000004359 castor oil Substances 0.000 claims description 3
- 235000019438 castor oil Nutrition 0.000 claims description 3
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims description 3
- ZEMPKEQAKRGZGQ-XOQCFJPHSA-N glycerol triricinoleate Natural products CCCCCC[C@@H](O)CC=CCCCCCCCC(=O)OC[C@@H](COC(=O)CCCCCCCC=CC[C@@H](O)CCCCCC)OC(=O)CCCCCCCC=CC[C@H](O)CCCCCC ZEMPKEQAKRGZGQ-XOQCFJPHSA-N 0.000 claims description 3
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 3
- 238000004519 manufacturing process Methods 0.000 claims description 3
- NHLUVTZJQOJKCC-UHFFFAOYSA-N n,n-dimethylhexadecan-1-amine Chemical compound CCCCCCCCCCCCCCCCN(C)C NHLUVTZJQOJKCC-UHFFFAOYSA-N 0.000 claims description 3
- 239000005056 polyisocyanate Substances 0.000 claims description 3
- 229920001228 polyisocyanate Polymers 0.000 claims description 3
- 229920006389 polyphenyl polymer Polymers 0.000 claims description 3
- KHPCPRHQVVSZAH-UHFFFAOYSA-N trans-cinnamyl beta-D-glucopyranoside Natural products OC1C(O)C(O)C(CO)OC1OCC=CC1=CC=CC=C1 KHPCPRHQVVSZAH-UHFFFAOYSA-N 0.000 claims description 3
- OEOIWYCWCDBOPA-UHFFFAOYSA-N 6-methyl-heptanoic acid Chemical compound CC(C)CCCCC(O)=O OEOIWYCWCDBOPA-UHFFFAOYSA-N 0.000 claims description 2
- ADJMNWKZSCQHPS-UHFFFAOYSA-L zinc;6-methylheptanoate Chemical compound [Zn+2].CC(C)CCCCC([O-])=O.CC(C)CCCCC([O-])=O ADJMNWKZSCQHPS-UHFFFAOYSA-L 0.000 claims description 2
- 238000006243 chemical reaction Methods 0.000 abstract description 17
- 239000000463 material Substances 0.000 abstract description 10
- 230000004913 activation Effects 0.000 abstract description 6
- 238000004064 recycling Methods 0.000 abstract description 4
- KXDHJXZQYSOELW-UHFFFAOYSA-N Carbamic acid Chemical group NC(O)=O KXDHJXZQYSOELW-UHFFFAOYSA-N 0.000 abstract description 3
- 238000004132 cross linking Methods 0.000 abstract description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 238000001125 extrusion Methods 0.000 abstract description 3
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 3
- 239000001257 hydrogen Substances 0.000 abstract description 3
- 238000010303 mechanochemical reaction Methods 0.000 abstract description 3
- 238000003756 stirring Methods 0.000 description 61
- 239000000203 mixture Substances 0.000 description 48
- 230000000052 comparative effect Effects 0.000 description 12
- AFCARXCZXQIEQB-UHFFFAOYSA-N N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]-2-[[3-(trifluoromethoxy)phenyl]methylamino]pyrimidine-5-carboxamide Chemical compound O=C(CCNC(=O)C=1C=NC(=NC=1)NCC1=CC(=CC=C1)OC(F)(F)F)N1CC2=C(CC1)NN=N2 AFCARXCZXQIEQB-UHFFFAOYSA-N 0.000 description 9
- VZSRBBMJRBPUNF-UHFFFAOYSA-N 2-(2,3-dihydro-1H-inden-2-ylamino)-N-[3-oxo-3-(2,4,6,7-tetrahydrotriazolo[4,5-c]pyridin-5-yl)propyl]pyrimidine-5-carboxamide Chemical compound C1C(CC2=CC=CC=C12)NC1=NC=C(C=N1)C(=O)NCCC(N1CC2=C(CC1)NN=N2)=O VZSRBBMJRBPUNF-UHFFFAOYSA-N 0.000 description 5
- 238000001035 drying Methods 0.000 description 5
- 235000021190 leftovers Nutrition 0.000 description 5
- 239000000126 substance Substances 0.000 description 5
- 238000012360 testing method Methods 0.000 description 5
- 239000012535 impurity Substances 0.000 description 3
- 238000006116 polymerization reaction Methods 0.000 description 3
- 238000012216 screening Methods 0.000 description 3
- 239000003795 chemical substances by application Substances 0.000 description 2
- 238000013329 compounding Methods 0.000 description 2
- 238000005034 decoration Methods 0.000 description 2
- 238000011049 filling Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000002893 slag Substances 0.000 description 2
- 150000005846 sugar alcohols Polymers 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- KEQXNNJHMWSZHK-UHFFFAOYSA-L 1,3,2,4$l^{2}-dioxathiaplumbetane 2,2-dioxide Chemical compound [Pb+2].[O-]S([O-])(=O)=O KEQXNNJHMWSZHK-UHFFFAOYSA-L 0.000 description 1
- 239000004604 Blowing Agent Substances 0.000 description 1
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 1
- ZLMJMSJWJFRBEC-UHFFFAOYSA-N Potassium Chemical compound [K] ZLMJMSJWJFRBEC-UHFFFAOYSA-N 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 239000003431 cross linking reagent Substances 0.000 description 1
- 150000002009 diols Chemical class 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- IQPQWNKOIGAROB-UHFFFAOYSA-N isocyanate group Chemical group [N-]=C=O IQPQWNKOIGAROB-UHFFFAOYSA-N 0.000 description 1
- 238000007885 magnetic separation Methods 0.000 description 1
- 229910052700 potassium Inorganic materials 0.000 description 1
- 239000011591 potassium Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 238000005086 pumping Methods 0.000 description 1
- 238000007873 sieving Methods 0.000 description 1
- 239000012974 tin catalyst Substances 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J11/00—Recovery or working-up of waste materials
- C08J11/04—Recovery or working-up of waste materials of polymers
- C08J11/10—Recovery or working-up of waste materials of polymers by chemically breaking down the molecular chains of polymers or breaking of crosslinks, e.g. devulcanisation
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B17/0404—Disintegrating plastics, e.g. by milling to powder
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/36—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die
- B29C48/395—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders
- B29C48/40—Means for plasticising or homogenising the moulding material or forcing it through the nozzle or die using screws surrounded by a cooperating barrel, e.g. single screw extruders using two or more parallel screws or at least two parallel non-intermeshing screws, e.g. twin screw extruders
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29C—SHAPING OR JOINING OF PLASTICS; SHAPING OF MATERIAL IN A PLASTIC STATE, NOT OTHERWISE PROVIDED FOR; AFTER-TREATMENT OF THE SHAPED PRODUCTS, e.g. REPAIRING
- B29C48/00—Extrusion moulding, i.e. expressing the moulding material through a die or nozzle which imparts the desired form; Apparatus therefor
- B29C48/25—Component parts, details or accessories; Auxiliary operations
- B29C48/78—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling
- B29C48/80—Thermal treatment of the extrusion moulding material or of preformed parts or layers, e.g. by heating or cooling at the plasticising zone, e.g. by heating cylinders
- B29C48/802—Heating
-
- 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
- C08G18/4081—Mixtures of compounds of group C08G18/64 with other macromolecular compounds
-
- 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
-
- 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
- C08G18/64—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63
- C08G18/6415—Macromolecular compounds not provided for by groups C08G18/42 - C08G18/63 having nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/67—Unsaturated compounds having active hydrogen
- C08G18/69—Polymers of conjugated dienes
- C08G18/698—Mixtures with compounds of group C08G18/40
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J9/00—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof
- C08J9/04—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent
- C08J9/12—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent
- C08J9/14—Working-up of macromolecular substances to porous or cellular articles or materials; After-treatment thereof using blowing gases generated by a previously added blowing agent by a physical blowing agent organic
- C08J9/141—Hydrocarbons
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B29—WORKING OF PLASTICS; WORKING OF SUBSTANCES IN A PLASTIC STATE IN GENERAL
- B29B—PREPARATION OR PRETREATMENT OF THE MATERIAL TO BE SHAPED; MAKING GRANULES OR PREFORMS; RECOVERY OF PLASTICS OR OTHER CONSTITUENTS OF WASTE MATERIAL CONTAINING PLASTICS
- B29B17/00—Recovery of plastics or other constituents of waste material containing plastics
- B29B17/04—Disintegrating plastics, e.g. by milling
- B29B2017/0424—Specific disintegrating techniques; devices therefor
- B29B2017/0476—Cutting or tearing members, e.g. spiked or toothed cylinders or intermeshing rollers
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08J—WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H
- C08J2375/00—Characterised by the use of polyureas or polyurethanes; Derivatives of such polymers
- C08J2375/04—Polyurethanes
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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
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/62—Plastics recycling; Rubber recycling
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Medicinal Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Polymers & Plastics (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- Materials Engineering (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention provides polyurethane foam waste activated micro powder and a preparation method thereof, polyurethane flexible foam and a preparation method and application thereof, and belongs to the technical field of polyurethane waste recycling. According to the invention, the polyurethane foam waste is mechanically sheared by utilizing mechanical shearing equipment, and mechanical energy and heat energy generated by extrusion, stretching and shearing actions act on a polyurethane chain segment to generate extremely high internal stress, so that hydrogen bonds are broken, the physical crosslinking density is reduced, and the apparent activation energy of the material is improved; and meanwhile, a mechanochemical reaction is carried out, so that C-O bonds in carbamate groups with weaker bond energy in a molecular structure are broken to a certain degree, a certain amount of hydroxyl groups are generated, and the reaction activity of the powder is increased. The polyurethane foam waste activated micro powder is used for preparing the polyurethane flexible foam, so that high value-added resource utilization of the polyurethane waste can be realized, the prepared polyurethane flexible foam has excellent performance, and the using amount of polyol in preparation of the polyurethane flexible foam can be reduced.
Description
Technical Field
The invention relates to the technical field of polyurethane waste recycling, in particular to polyurethane foam waste activated micro powder and a preparation method thereof, and polyurethane flexible foam and a preparation method and application thereof.
Background
The production and consumption of polyurethane flexible foams in China are gradually increased year by year, the elimination amount of a large number of polyurethane flexible foam products is greatly increased, the environmental pressure caused in China is obvious, and the problem of how to recycle polyurethane waste materials in an environment-friendly and efficient manner is slowly a problem in the polyurethane industry.
The Chinese patent with publication number CN107383305A discloses a recycling method of leftovers of difficultly degradable industrial polyurethane products and a recycled product, and the method is carried out according to the following steps: (1) the leftovers of industrial polyurethane products are recycled to reduce the light weightBlowing out the slag through a grid, and removing heavy slag through a vibrating screen; (2) crushing the industrial polyurethane product leftovers obtained in the step (1) to particles with the particle size of 0.3-20 mm; (3) pumping the crushed industrial polyurethane product leftovers obtained in the step (2), a cross-linking agent, a tin catalyst and water into a reaction kettle, and mixing and stirring at a stirring speed of 80-150 r/min for 5-10 min; (4) putting the granular material obtained in the step (3) into a die box for pressing, wherein the density of the pressed product is 40-250 kg/m3(ii) a (5) Filling steam into the mold box, wherein the temperature in the mold box is 110-150 ℃ after the steam is filled, and the air pressure value is 1-2 atmospheric pressures; (6) curing for 20-40 min in a mold box to obtain a regenerated product. The patent discloses a recycling method of leftovers of difficultly degradable industrial polyurethane products and a recycled product, which can reduce the pollution to the environment, but the performance of the obtained product is reduced.
Disclosure of Invention
The invention aims to provide polyurethane foam waste activated micro powder and a preparation method thereof, and a polyurethane soft foam and a preparation method and application thereof.
In order to achieve the above object, the present invention provides the following technical solutions:
the invention provides a preparation method of polyurethane foam waste activated micro powder, which comprises the following steps:
cutting the polyurethane foam waste into blocks to obtain blocky polyurethane foam waste;
and under the air condition, mechanically shearing the blocky polyurethane foam waste by utilizing mechanical shearing equipment to obtain the polyurethane foam waste activated micro powder.
Preferably, the mechanical shearing device is a two-roll or multi-roll device or an extruder.
Preferably, the temperature of the double-roller or multi-roller equipment is 50-85 ℃, and the linear speed is 10-60 m/min; the temperature of the extruder is 50-85 ℃, and the rotating speed is 30-90 r/min.
The invention provides the polyurethane foam waste activated micro powder prepared by the preparation method in the scheme.
Preferably, the particle size of the polyurethane foam waste activated micro powder is less than 40 meshes.
The invention provides a polyurethane soft foam which comprises the following preparation raw materials in parts by weight:
the polyurethane foam waste activated micro powder is the polyurethane foam waste activated micro powder in the scheme.
Preferably, the polyol is one or more of polyester polyol, polyether polyol, polybutadiene polyol, polycarbonate polyol, rosin ester polyol and castor oil; the hydroxyl value of the polyol is 30-80 mgKOH/g, and the viscosity is 600-1000 Pa/s.
Preferably, the tertiary amine catalyst is one or more of N, N-dimethylhexadecylamine, triethylene diamine, N-methylmorpholine, N-ethylmorpholine, diethanolamine and dimethylethanolamine;
the organic metal salt catalyst is one or more of stannous octoate, stannous oleate, dibutyltin dilaurate, zinc isooctanoate, bismuth isooctanoate and potassium isooctanoate;
the foam stabilizer comprises silicone oil;
the foaming agent is one or more of water, cyclopentane, n-pentane and isopentane;
the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, naphthalene diisocyanate, xylylene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate.
The invention provides a preparation method of the polyurethane soft foam, which comprises the following steps: and mixing the preparation raw materials, foaming and curing to obtain the polyurethane flexible foam.
The invention provides application of the polyurethane soft foam in the scheme in furniture.
The invention provides a preparation method of polyurethane foam waste activated micro powder, which comprises the following steps: cutting the polyurethane foam waste into blocks to obtain blocky polyurethane foam waste; and under the air condition, mechanically shearing the blocky polyurethane foam waste by utilizing mechanical shearing equipment to obtain the polyurethane foam waste activated micro powder. According to the invention, the polyurethane foam waste is mechanically sheared by utilizing mechanical shearing equipment, and mechanical energy and heat energy generated by extrusion, stretching and shearing actions act on a polyurethane chain segment to generate extremely high internal stress, so that hydrogen bonds are broken, the physical crosslinking density is reduced, and the apparent activation energy of the material is improved; and meanwhile, a mechanochemical reaction is carried out, so that C-O bonds in carbamate groups with weaker bond energy in a molecular structure are broken to a certain degree, a certain amount of hydroxyl groups are generated, and the reaction activity of the powder is increased.
The polyurethane foam waste activated micro powder is used for preparing polyurethane flexible foam, and the activated micro powder has hydroxyl active groups, so that the activated micro powder has good compatibility with isocyanate and a polyol raw material, can replace the polyol raw material to perform a polymerization reaction with the isocyanate, reduces the using amount of the polyol, and realizes that all physical indexes of the prepared polyurethane flexible foam meet the technical requirements of sofa products, thereby realizing high value-added utilization of the polyurethane foam waste.
Detailed Description
The invention provides a preparation method of polyurethane foam waste activated micro powder, which comprises the following steps:
cutting the polyurethane foam waste into blocks to obtain blocky polyurethane foam waste;
and under the air condition, mechanically shearing the blocky polyurethane foam waste by utilizing mechanical shearing equipment to obtain the polyurethane foam waste activated micro powder.
The method cuts the polyurethane foam waste into blocks to obtain the blocky polyurethane foam waste.
In the present invention, the polyurethane foam waste is preferably polyurethane soft foam waste; the polyurethane soft foam waste is preferably polyurethane soft foam waste for sofas or polyurethane soft foam waste for automobile seats. In the embodiment of the invention, the composition of the soft polyurethane foam waste material for the sofa is as follows: polyether polyol V8010, toluene diisocyanate and a part of compounding agent; the composition of the polyurethane soft foam waste material for the automobile seat is as follows: polyether polyol 3630, polyether polyol 330N, xylene-1, 4-diisocyanate and part of a compounding agent.
Before the cutting into blocks, the invention preferably firstly cleans, dries and magnetically separates the polyurethane soft foam waste. The invention removes metal impurities by magnetic separation. The present invention has no particular requirement for the washing and drying process, and the washing and drying process well known in the art may be used.
The present invention has no particular requirement on the cutting process. In the invention, the blocky polyurethane foam waste is preferably cubic, and the size of the blocky polyurethane foam waste is preferably 10-100 mm, and more preferably 20-80 mm.
After the massive polyurethane foam waste is obtained, the massive polyurethane foam waste is mechanically sheared by mechanical shearing equipment under the air condition to obtain the polyurethane foam waste activated micro powder.
In the present invention, the mechanical shearing apparatus is preferably a multi-roll apparatus or an extruder, more preferably a multi-roll apparatus. In the present invention, the multi-roll apparatus preferably comprises a two-roll refiner, a calender or an open mill; the extruder preferably comprises a single screw extruder, a twin screw extruder, a pin extruder or a planetary extruder. In the invention, when the mechanical shearing equipment is multi-roller equipment, the temperature of the multi-roller equipment is preferably 50-85 ℃, more preferably 60-80 ℃, and further preferably 65-75 ℃; the linear velocity is preferably 10-60 m/min, and more preferably 20-40 m/min; the roll gap is preferably not more than 1 mm. In the invention, when the mechanical shearing equipment is an extruder, the temperature of the extruder is preferably 50-85 ℃, more preferably 60-80 ℃, and further preferably 65-75 ℃; the rotation speed is preferably 30-90 r/min, wherein the single-screw extruder is more preferably 60-90 r/min, and the double-screw extruder is more preferably 30-60 r/min; the method preferably selects 4-30 times of shearing by equipment, thereby ensuring full activation of the polyurethane waste material.
According to the invention, the polyurethane foam waste is mechanically sheared by utilizing mechanical shearing equipment, and mechanical energy and heat energy generated by extrusion, stretching and shearing actions act on a polyurethane chain segment to generate extremely high internal stress, so that hydrogen bonds are broken, the physical crosslinking density is reduced, and the apparent activation energy of the material is improved; and meanwhile, a mechanochemical reaction is carried out, so that C-O bonds in carbamate groups with weaker bond energy in a molecular structure are broken to a certain degree, a certain amount of hydroxyl groups are generated, and the reaction activity of the powder is increased.
After the mechanical shearing is finished, the fine powder is preferably dried and sieved to obtain the polyurethane foam waste activated micro powder. The present invention does not require any particular drying and screening process, as is well known in the art.
The invention provides the polyurethane foam waste activated micro powder prepared by the preparation method in the scheme. In the present invention, the particle size of the polyurethane foam waste activated fine powder is preferably less than 40 mesh, more preferably less than 80 mesh, even more preferably less than 80 mesh, and even more preferably 100 to 120 mesh.
The invention provides a polyurethane soft foam which comprises the following preparation raw materials in parts by weight:
the polyurethane foam waste activated micro powder is the polyurethane foam waste activated micro powder in the scheme.
The preparation raw material of the polyurethane flexible foam comprises 100 parts of polyol by mass. In the present invention, the polyol is preferably one or more of polyester polyol, polyether polyol, polybutadiene polyol, polycarbonate polyol, rosin ester polyol and castor oil; when the polyhydric alcohols are a plurality of the above substances, the proportion of each polyhydric alcohol in the invention has no special requirement, and any proportion can be adopted. The present invention does not require any particular kind of the polyester polyol, polyether polyol, polybutadiene polyol and polycarbonate polyol, and polyester polyol, polyether polyol, polybutadiene polyol and polycarbonate polyol well known in the art may be used. In the invention, the polyester polyol can be POL-2120, POL-2760, POL-1760 or POL-2560, the polyether polyol can be V8010, 5616S, F3156 or CHE380, and the polybutadiene polyol can be Polybd R-15M or Nisso PB; the polycarbonate polyol may specifically be PCDL (polycarbonate diol). In the invention, the hydroxyl value of the polyol is preferably 30-80 mgKOH/g, more preferably 50-80 mgKOH/g, and even more preferably 60-70 mgKOH/g; the viscosity is preferably 600 to 1000 pas, more preferably 700 to 900 pas, and still more preferably 750 to 850 pas.
The preparation raw material of the polyurethane soft foam provided by the invention comprises 5-40 parts, preferably 10-35 parts, more preferably 15-35 parts, and even more preferably 20-30 parts of polyurethane foam waste activated micro powder based on the mass parts of the polyol. In the present invention, the particle size of the polyurethane foam waste activated fine powder is preferably less than 40 mesh, more preferably less than 80 mesh (i.e., 180 μm). In the invention, the polyurethane foam waste activated micro powder has hydroxyl active groups, so that the polyurethane foam waste activated micro powder has better compatibility with isocyanate and a polyol raw material, can replace the polyol raw material to perform a polymerization reaction with the isocyanate, and reduces the using amount of the polyol.
Based on the mass parts of the polyol, the preparation raw material of the polyurethane flexible foam provided by the invention comprises 0.1-2.5 parts of tertiary amine catalyst, preferably 0.5-2.0 parts, and more preferably 0.8-1.5 parts. In the present invention, the tertiary amine catalyst is preferably one or more of N, N-dimethylhexadecylamine, triethylene diamine, N-methylmorpholine, N-ethylmorpholine, diethanolamine, and dimethylethanolamine; when the tertiary amine catalyst is a plurality of the above substances, the proportion of each tertiary amine catalyst in the invention has no special requirement and can be any.
Based on the mass parts of the polyol, the preparation raw material of the polyurethane flexible foam provided by the invention comprises 0.5-2 parts of organic metal salt catalyst, preferably 0.7-1.8 parts, and more preferably 1.0-1.5 parts. In the invention, the organic metal salt catalyst is preferably one or more of stannous octoate, stannous oleate, dibutyltin dilaurate, zinc isooctoate, bismuth isooctoate and potassium isooctoate, and when the organic metal salt catalyst is a plurality of the above substances, the specific proportion of each organic metal salt catalyst is not required, and any proportion can be adopted.
Based on the mass parts of the polyol, the preparation raw material of the polyurethane soft foam provided by the invention comprises 0.5-3 parts of foam stabilizer, preferably 1.0-2.5 parts, and more preferably 1.5-2.0 parts. In the present invention, the foam stabilizer preferably comprises a silicone oil, and the silicone oil is preferably one or more of AK-8803, AK-8804, AK-8806, AK-8808 and AK-8810.
The preparation raw materials of the polyurethane flexible foam provided by the invention comprise 5-25 parts of foaming agent, preferably 10-20 parts, and more preferably 12-17 parts by mass of the polyol. In the present invention, the blowing agent is preferably one or more of water, cyclopentane, n-pentane and isopentane; when the foaming agent is a plurality of the above substances, the invention has no special requirements on the proportion of each foaming agent, and the proportion can be any.
Based on the mass parts of the polyol, the preparation raw material of the polyurethane flexible foam provided by the invention comprises 20-80 parts of isocyanate, preferably 30-70 parts, and more preferably 40-60 parts. In the present invention, the isocyanate is preferably one or more of toluene diisocyanate, diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, naphthalene diisocyanate, xylylene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate. When the isocyanate is a plurality of the substances, the proportion of the isocyanate does not have special requirements, and the isocyanate can be prepared in any proportion.
The invention controls the content of each component of the polyurethane flexible foam, so that the polyurethane flexible foam has excellent mechanical property.
The invention provides a preparation method of the polyurethane soft foam, which comprises the following steps: and mixing the preparation raw materials, foaming and curing to obtain the polyurethane flexible foam.
In the present invention, mixing the respective production raw materials preferably includes: firstly mixing polyurethane foam waste activated micro powder and polyol, adding a tertiary amine catalyst, an organic metal salt catalyst, a foam stabilizer and a foaming agent into the obtained first mixture, and carrying out second mixing to obtain a second mixture; and adding isocyanate into the second mixed material, and carrying out third mixing.
According to the invention, polyurethane foam waste activated micro powder and polyol are firstly mixed to obtain a first mixture. In the invention, the first mixing is preferably carried out under the condition of stirring, and the stirring speed is preferably 1000-10000 r/min, more preferably 2000-8000 r/min, and further preferably 4000-6000 r/min. In the present invention, the time for the first mixing is preferably 5 to 40min, and more preferably 10 to 30 min. In the invention, the stirring temperature is preferably 25-50 ℃, and more preferably 35-45 ℃.
After the first mixture is obtained, the tertiary amine catalyst, the organic metal salt catalyst, the foam stabilizer and the foaming agent are added into the first mixture for second mixing to obtain a second mixture. In the invention, the second mixing is preferably carried out under the condition of stirring, and the stirring speed is preferably 500-3000 r/min, and more preferably 1000-2000 r/min; the second mixing time is preferably 5 to 30min, and more preferably 10 to 25 min. In the present invention, the temperature of the second mixing is preferably 25 to 40 ℃, and more preferably 25 to 35 ℃.
After a second mixed material is obtained, adding isocyanate into the second mixed material, and carrying out third mixing. In the invention, the third mixing is preferably carried out under the condition of stirring, the rotating speed of the stirring is preferably 1000-2000 r/min, and the foaming is carried out after the stirred solution turns to milk white. After the isocyanate is added, the isocyanate group and the hydroxyl of the polyol and the polyurethane foam waste activated micro powder are subjected to polymerization reaction to generate polyurethane.
After mixing the preparation raw materials, the invention foams the obtained mixture and cures the mixture to obtain the polyurethane soft foam.
In the present invention, it is preferable to foam in a mold prepared in advance. In the present invention, the foaming is preferably performed under room temperature conditions.
The invention provides application of the polyurethane soft foam in the scheme in furniture. In the present invention, the furniture preferably comprises a sofa. When the soft polyurethane foam is used for the sofa, the invention has no special requirement on the application mode, and the soft polyurethane foam can be directly used as the filling material of the sofa.
The following examples are provided to illustrate the activated fine powder of polyurethane foam waste and the preparation method thereof, the flexible polyurethane foam and the preparation method and application thereof in detail, but they should not be construed as limiting the scope of the present invention.
Examples 1 to 1
(1) After the polyurethane soft foam waste for the sofa is cleaned, dried, dewatered and magnetically separated to remove metal impurities, cutting the waste into cubic blocks with the diameter of 10-100 mm by adopting conventional cutting equipment to obtain the massive polyurethane soft foam waste;
(2) and (2) putting the blocky polyurethane soft foam waste into a double-roller refiner for mechanical shearing, setting the linear speed to be 40m/min, setting the temperature to be 75 ℃, adjusting the roller distance to be 1mm, passing through rollers for 10 times to obtain polyurethane foam waste activated micro powder, and screening by an air classifier to obtain the polyurethane foam waste activated micro powder with the particle size dimension of more than 80 meshes (namely the particle size of less than 180 mu m) for later use.
Example 1
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 10.5g of the polyurethane foam waste activated micro powder prepared in the example 1-1 and 70g of polyether polyol V801059.5g in total into a reaction kettle, and stirring and mixing for 30min at the stirring temperature of 30 ℃ and the stirring speed of 6000r/min to obtain a first mixture; adding 0.6g of stannous octoate, 0.28g of triethylene diamine, 0.67g of silicone oil and 8.63g of cyclopentane into a reaction kettle according to the formula ratio, stirring and mixing for 20min, wherein the stirring temperature is 30 ℃, and the stirring speed is 1500r/min, so as to obtain a second mixture; and adding 25g of toluene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1200r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and curing to obtain the polyurethane flexible foam.
Example 2
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 14g of the polyurethane foam waste activated micro powder prepared in the example 1-1 and 70g of polyether polyol V801056 g in total into a reaction kettle, and stirring and mixing for 30min at the stirring temperature of 30 ℃ and at the stirring speed of 6000r/min to obtain a first mixture; adding 0.6g of stannous octoate, 0.28g of triethylene diamine, 0.67g of silicone oil and 8.63g of cyclopentane into a reaction kettle according to the formula ratio, stirring and mixing for 20min at the stirring temperature of 30 ℃ and the stirring speed of 1500r/min to obtain a second mixture; and adding 25g of toluene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1200r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and curing to obtain the polyurethane flexible foam.
Example 3
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 17.5g of polyurethane foam waste activated micro powder prepared in the example 1-1 and 70g of polyether polyol V801052.5g in total into a reaction kettle, and stirring and mixing for 30min at the stirring temperature of 30 ℃ and the stirring speed of 6000r/min to obtain a first mixture; adding 0.6g of stannous octoate, 0.28g of triethylene diamine, 0.67g of silicone oil and 8.63g of cyclopentane into a reaction kettle according to the formula ratio, stirring and mixing for 20min at the stirring temperature of 30 ℃ and the stirring speed of 1500r/min to obtain a second mixture; and adding 25g of toluene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1200r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and curing to obtain the polyurethane flexible foam.
Example 4
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 10.5g of the polyurethane foam waste activated micro powder prepared in the example 1-1 and 59.5g of polybutadiene polyol Polybd R-15M (the total amount is 70 g) into a reaction kettle, and stirring and mixing for 30min at the stirring temperature of 30 ℃ and at the stirring speed of 6000R/min to obtain a first mixture; adding 0.6g of stannous oleate, 0.4g of N-methylmorpholine, 1.2g of silicone oil and 7.5g of N-pentane into a reaction kettle according to the formula ratio, stirring and mixing for 20min at the stirring temperature of 30 ℃ and the stirring speed of 1500r/min to obtain a second mixture; and adding 10g of toluene diisocyanate and 10g of diphenylmethane diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1200r/min, pouring the mixture into a mould for foaming after the stirring solution turns milky white, and curing to obtain the polyurethane flexible foam.
Example 5
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 10.5g of the polyurethane foam waste activated micro powder prepared in the example 1-1 and 70g of polyether polyol 5616S 59.5g in total into a reaction kettle, and stirring and mixing for 30min at the stirring temperature of 30 ℃ and at the stirring speed of 6000r/min to obtain a first mixture; adding 0.65g of dibutyltin dilaurate, 0.28g of dimethylethanolamine, 1.3g of silicone oil and 8g of isopentane into a reaction kettle according to the formula ratio, and stirring and mixing for 20min at the stirring temperature of 30 ℃ at the stirring speed of 1500r/min to obtain a second mixture; and adding 30g of toluene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1200r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and curing to obtain the polyurethane flexible foam.
Comparative example 1
The only difference from example 1 is that no polyurethane foam waste activated fine powder was added and the amount of polyol used was 70 g.
The polyurethane soft foams prepared in the examples 1-5 and the comparative example 1 are subjected to performance tests, specifically reference GB/T6343-.
Table 1 shows the test results of examples 1 to 5 and comparative example 1
From the results in table 1, it is clear that the difference between each test index of the samples with different proportions of the polyurethane foam waste activated fine powder added in examples 1 to 5 and the test index of the sample without adding the polyurethane foam waste activated fine powder in comparative example 1 is not large. Furthermore, the results of example 1 and comparative example 1 also show that the polyurethane foam of the present invention can replace a part of polyol by adding the polyurethane foam waste activated fine powder, and the obtained polyurethane flexible foam has good performance with the use amount of the polyol reduced.
Examples 1 to 2
Cleaning, drying, dewatering and magnetically separating the polyurethane soft foam waste for the automobile seat to remove metal impurities, and cutting the waste into cubic blocks with the diameter of 10-100 mm by adopting conventional cutting equipment to obtain massive polyurethane soft foam waste;
and (3) placing the blocky polyurethane soft foam waste into a refiner with a double-roller structure, mechanically shearing for 7 times under the conditions that the linear speed of a front roller is 40m/min and the temperature is 70 ℃, and then drying and screening to obtain the polyurethane foam waste activated micro powder with the mesh number of 60-80 meshes.
Examples 1 to 3
The difference from the example 1-2 is that the polyurethane foam waste activated micro powder with a particle size of more than 80 meshes (namely, the particle size is less than 180 mu m) is prepared by replacing a two-roll refiner with a single-screw extruder, rotating at 60r/min and 70 ℃ and mechanically shearing for 6 times and sieving with a 80-mesh sieve.
Examples 1 to 4
The difference from the example 1-2 is that a two-roll refiner was replaced by a twin-screw extruder at a rotation speed of 45r/min and a temperature of 70 ℃, mechanically sheared for 4 times, and sieved through a 80-mesh sieve to prepare activated fine powder of polyurethane foam waste having a particle size of more than 80 meshes (i.e., a particle size of less than 180 μm).
Examples 1 to 5
The difference from the example 1-2 is only that the particle size of the activated fine powder of the polyurethane foam waste is 80 to 100 mesh.
Examples 1 to 6
The difference from the example 1-2 is only that the particle size of the polyurethane foam waste activated fine powder is 100 to 120 mesh.
Example 6
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 18g of the polyurethane foam waste activated micro powder prepared in the example 1-2 and 5616S 102g of polyether polyol into a reaction kettle, stirring for 30min to fully and uniformly mix the materials to obtain a first mixture, adding 0.6g of potassium isooctanoate, 0.4g of triethylene diamine, 2g of silicone oil and 10g of cyclopentane into the first mixture, and continuously stirring to obtain a second mixture; and adding 20g of toluene diisocyanate and 10g of xylylene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1000r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and standing for 20min for curing to obtain the polyurethane flexible foam.
Example 7
The only difference from example 6 is that the fine polyurethane foam waste activated powder prepared in examples 1-2 was replaced with the fine polyurethane foam waste activated powder prepared in examples 1-3.
Example 8
The only difference from example 6 is that the fine polyurethane foam waste activated powder prepared in examples 1 to 2 was replaced with the fine polyurethane foam waste activated powder prepared in examples 1 to 4.
Example 9
The difference from example 6 is only that the fine polyurethane foam waste activated powder prepared in example 1-2 was replaced with the fine polyurethane foam waste activated powder prepared in example 1-5, that is, the particle size of the fine polyurethane foam waste activated powder was changed from 60 to 80 mesh to 80 to 100 mesh.
Example 10
The difference from example 6 is only that the fine polyurethane foam waste activated powder prepared in example 1-2 was replaced with the fine polyurethane foam waste activated powder prepared in example 1-6, that is, the particle size of the fine polyurethane foam waste activated powder was changed from 60 to 80 mesh to 100 to 120 mesh.
Example 11
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 24g of polyurethane foam waste activated micro powder prepared in the example 1-2 and 5616s 96g of polyether polyol into a reaction kettle, stirring for 30min to fully and uniformly mix the materials to obtain a first mixture, adding 0.6g of potassium isooctanoate, 0.4g of triethylene diamine, 2g of silicone oil and 10g of cyclopentane into the first mixture, and continuously stirring to obtain a second mixture; and adding 20g of toluene diisocyanate and 10g of xylylene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1000r/min, pouring the mixture into a mold for foaming after the stirring solution turns milky white, and standing for 20min for curing to obtain the polyurethane flexible foam.
Example 12
The preparation comprises the following raw materials in parts by weight:
the preparation method comprises the following specific steps:
adding 31.2g of the polyurethane foam waste activated micro powder prepared in the example 1-2 and 88.8g of polyether polyol 5616s alcohol into a reaction kettle, stirring for 30min to fully and uniformly mix the materials to obtain a first mixture, adding 0.6g of potassium isooctanoate, 0.4g of triethylene diamine, 2g of silicone oil and 10g of cyclopentane into the first mixture, and continuously stirring to obtain a second mixture; and adding 20g of toluene diisocyanate and 10g of xylylene diisocyanate into the second mixture, setting the rotating speed of a stirring device to be 1000r/min, stirring for 7s, pouring the mixture into a mold for foaming after the stirred solution turns milky white, and standing for 20min for curing to obtain the polyurethane flexible foam.
Comparative example 2
The only difference from example 6 is that no polyurethane foam waste activated micropowder was added and the amount of polyol used was 120 g.
The performance test of the polyurethane soft foams prepared in examples 6-12 and comparative example 2 was carried out with reference to GB/T6343-.
TABLE 2 Properties of polyurethane Flexible foams prepared in examples 6 to 12
As can be seen from Table 2, the difference between each test index of the samples of the polyurethane foam waste activation micro powder with different proportions and the test index of the sample of the comparative example 2 without adding the polyurethane waste activation standard sample is not large. Meanwhile, the results of example 6 and comparative example 2 show that the polyurethane foam waste activated micropowder can replace part of the polyol by adding the polyurethane foam waste activated micropowder, and the obtained polyurethane flexible foam still has good performance under the condition of reducing the using amount of the polyol. Further, from the results of examples 6, 9 to 10 and comparative example 2, it is understood that the smaller the particle size of the activated fine powder is, the closer the product performance is to the sample (i.e., comparative example 2) to which the activated fine powder of polyurethane foam waste is not added.
It can be seen from the above examples and comparative examples that the present invention provides a polyurethane foam waste activated micropowder, a method for preparing the same, a polyurethane flexible foam, a method for preparing the same, and an application thereof.
The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, various modifications and decorations can be made without departing from the principle of the present invention, and these modifications and decorations should also be regarded as the protection scope of the present invention.
Claims (10)
1. A preparation method of polyurethane foam waste activated micro powder comprises the following steps:
cutting the polyurethane foam waste into blocks to obtain blocky polyurethane foam waste;
and under the air condition, mechanically shearing the blocky polyurethane foam waste by utilizing mechanical shearing equipment to obtain the polyurethane foam waste activated micro powder.
2. The method of claim 1, wherein the mechanical shearing device is a multi-roll device or an extruder.
3. The preparation method according to claim 2, wherein the temperature of the multi-roll device is 50-85 ℃ and the linear velocity is 10-60 m/min; the temperature of the extruder is 50-85 ℃, and the rotating speed is 30-90 r/min.
4. An activated fine powder of polyurethane foam waste produced by the production method according to any one of claims 1 to 3.
5. The polyurethane foam waste activated micropowder of claim 4, wherein the polyurethane foam waste activated micropowder has a particle size of less than 40 mesh.
6. The polyurethane soft foam is characterized by comprising the following preparation raw materials in parts by weight:
the polyurethane foam waste activated micropowder is the polyurethane foam waste activated micropowder of claim 4.
7. The flexible polyurethane foam according to claim 6, wherein the polyol is one or more of a polyester polyol, a polyether polyol, a polybutadiene polyol, a polycarbonate polyol, a rosin ester polyol, and castor oil; the hydroxyl value of the polyol is 30-80 mgKOH/g, and the viscosity is 600-1000 Pa/s.
8. The polyurethane flexible foam of claim 6, wherein the tertiary amine catalyst is one or more of N, N-dimethylhexadecylamine, triethylenediamine, N-methylmorpholine, N-ethylmorpholine, diethanolamine, and dimethylethanolamine;
the organic metal salt catalyst is one or more of stannous octoate, stannous oleate, dibutyltin dilaurate, zinc isooctanoate, bismuth isooctanoate and potassium isooctanoate;
the foam stabilizer comprises silicone oil;
the foaming agent is one or more of water, cyclopentane, n-pentane and isopentane;
the isocyanate is one or more of toluene diisocyanate, diphenylmethane diisocyanate, polymethylene polyphenyl polyisocyanate, naphthalene diisocyanate, xylylene diisocyanate, isophorone diisocyanate and hexamethylene diisocyanate.
9. A method for preparing the flexible polyurethane foam according to any one of claims 6 to 8, comprising the steps of: and mixing the preparation raw materials, foaming and curing to obtain the polyurethane flexible foam.
10. Use of the flexible polyurethane foam according to claim 9 in furniture.
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|---|---|---|---|---|
| GB1435210A (en) * | 1972-08-07 | 1976-05-12 | Balling Engelsen K | Method of manufacturing foamed polyurethane containing polyurethane scrap |
| US4451583A (en) * | 1982-01-26 | 1984-05-29 | Olin Corporation | Recycling of flexible polyurethane foam scrap |
| WO2000039206A1 (en) * | 1998-12-23 | 2000-07-06 | Da Cunha Lima Luiz Carlos Oliv | Process for polyurethane recycling |
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| US20080116304A1 (en) * | 2006-11-16 | 2008-05-22 | Industry-Academic Cooperation Foundation Gyeongsang National University | Fine powder of waste polyurethane foam and method of manufacturing the same |
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2021
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|---|---|---|---|---|
| GB1435210A (en) * | 1972-08-07 | 1976-05-12 | Balling Engelsen K | Method of manufacturing foamed polyurethane containing polyurethane scrap |
| US4451583A (en) * | 1982-01-26 | 1984-05-29 | Olin Corporation | Recycling of flexible polyurethane foam scrap |
| WO2000039206A1 (en) * | 1998-12-23 | 2000-07-06 | Da Cunha Lima Luiz Carlos Oliv | Process for polyurethane recycling |
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