CN112250818A - Recyclable water-based polyurethane shielding material and preparation method thereof - Google Patents
Recyclable water-based polyurethane shielding material and preparation method thereof Download PDFInfo
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- CN112250818A CN112250818A CN202011030522.8A CN202011030522A CN112250818A CN 112250818 A CN112250818 A CN 112250818A CN 202011030522 A CN202011030522 A CN 202011030522A CN 112250818 A CN112250818 A CN 112250818A
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- shielding material
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- based polyurethane
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- 239000000463 material Substances 0.000 title claims abstract description 78
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 32
- 239000004814 polyurethane Substances 0.000 title claims abstract description 31
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 31
- 238000002360 preparation method Methods 0.000 title abstract description 10
- 238000003756 stirring Methods 0.000 claims abstract description 18
- -1 polyoxypropylene Polymers 0.000 claims abstract description 15
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000002994 raw material Substances 0.000 claims abstract description 11
- 239000004014 plasticizer Substances 0.000 claims abstract description 10
- 239000004970 Chain extender Substances 0.000 claims abstract description 9
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 9
- 239000003431 cross linking reagent Substances 0.000 claims abstract description 9
- FPAFDBFIGPHWGO-UHFFFAOYSA-N dioxosilane;oxomagnesium;hydrate Chemical compound O.[Mg]=O.[Mg]=O.[Mg]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O.O=[Si]=O FPAFDBFIGPHWGO-UHFFFAOYSA-N 0.000 claims abstract description 9
- 239000003995 emulsifying agent Substances 0.000 claims abstract description 9
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims abstract description 8
- XNWFRZJHXBZDAG-UHFFFAOYSA-N 2-METHOXYETHANOL Chemical compound COCCO XNWFRZJHXBZDAG-UHFFFAOYSA-N 0.000 claims abstract description 6
- 239000002202 Polyethylene glycol Substances 0.000 claims abstract description 6
- 238000001816 cooling Methods 0.000 claims abstract description 6
- 239000008367 deionised water Substances 0.000 claims abstract description 6
- 229910021641 deionized water Inorganic materials 0.000 claims abstract description 6
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 6
- 229920001223 polyethylene glycol Polymers 0.000 claims abstract description 6
- 229920001451 polypropylene glycol Polymers 0.000 claims abstract description 6
- 239000007787 solid Substances 0.000 claims abstract description 6
- 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 abstract description 6
- 238000005303 weighing Methods 0.000 claims abstract description 6
- 229920005906 polyester polyol Polymers 0.000 claims abstract description 5
- 229920000909 polytetrahydrofuran Polymers 0.000 claims abstract description 5
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims abstract description 3
- 150000002009 diols Chemical class 0.000 claims abstract description 3
- 239000000203 mixture Substances 0.000 claims abstract description 3
- PTBDIHRZYDMNKB-UHFFFAOYSA-N 2,2-Bis(hydroxymethyl)propionic acid Chemical group OCC(C)(CO)C(O)=O PTBDIHRZYDMNKB-UHFFFAOYSA-N 0.000 claims description 11
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 8
- 230000000873 masking effect Effects 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 7
- 239000005058 Isophorone diisocyanate Substances 0.000 claims description 6
- UKLDJPRMSDWDSL-UHFFFAOYSA-L [dibutyl(dodecanoyloxy)stannyl] dodecanoate Chemical group CCCCCCCCCCCC(=O)O[Sn](CCCC)(CCCC)OC(=O)CCCCCCCCCCC UKLDJPRMSDWDSL-UHFFFAOYSA-L 0.000 claims description 6
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 6
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical group CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 6
- 239000011248 coating agent Substances 0.000 claims description 5
- 238000000576 coating method Methods 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- TXBCBTDQIULDIA-UHFFFAOYSA-N 2-[[3-hydroxy-2,2-bis(hydroxymethyl)propoxy]methyl]-2-(hydroxymethyl)propane-1,3-diol Chemical compound OCC(CO)(CO)COCC(CO)(CO)CO TXBCBTDQIULDIA-UHFFFAOYSA-N 0.000 claims description 3
- 125000003916 ethylene diamine group Chemical group 0.000 claims description 3
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 8
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 abstract description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 abstract description 3
- 238000005507 spraying Methods 0.000 description 8
- 239000004743 Polypropylene Substances 0.000 description 6
- 230000001070 adhesive effect Effects 0.000 description 6
- 239000000853 adhesive Substances 0.000 description 5
- 239000002390 adhesive tape Substances 0.000 description 5
- 238000007789 sealing Methods 0.000 description 5
- 229920003023 plastic Polymers 0.000 description 4
- 239000004033 plastic Substances 0.000 description 4
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 3
- 239000004698 Polyethylene Substances 0.000 description 3
- YXFVVABEGXRONW-UHFFFAOYSA-N Toluene Chemical compound CC1=CC=CC=C1 YXFVVABEGXRONW-UHFFFAOYSA-N 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 239000003973 paint Substances 0.000 description 3
- 239000002985 plastic film Substances 0.000 description 3
- 229920006255 plastic film Polymers 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 229920001343 polytetrafluoroethylene Polymers 0.000 description 3
- 239000004810 polytetrafluoroethylene Substances 0.000 description 3
- 229920002379 silicone rubber Polymers 0.000 description 3
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000003292 glue Substances 0.000 description 2
- 239000011256 inorganic filler Substances 0.000 description 2
- 229910003475 inorganic filler Inorganic materials 0.000 description 2
- 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 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 1
- 238000005411 Van der Waals force Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 239000003063 flame retardant Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000003595 mist Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000003960 organic solvent Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 231100000572 poisoning Toxicity 0.000 description 1
- 230000000607 poisoning effect Effects 0.000 description 1
- 229920001155 polypropylene Polymers 0.000 description 1
- 238000012805 post-processing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000001179 sorption measurement Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 238000004381 surface treatment Methods 0.000 description 1
- 238000003786 synthesis reaction Methods 0.000 description 1
- 239000002699 waste material Substances 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
- 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
- C08G18/6681—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6685—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/32 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
-
- 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
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/2815—Monohydroxy compounds
- C08G18/283—Compounds containing ether groups, e.g. oxyalkylated monohydroxy 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
- C08G18/30—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
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3225—Polyamines
- C08G18/3228—Polyamines acyclic
-
- 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
- C08G18/42—Polycondensates having carboxylic or carbonic ester groups in the main chain
-
- 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
- C08G18/65—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
- C08G18/6633—Compounds of group C08G18/42
- C08G18/6637—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6648—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38
- C08G18/6651—Compounds of group C08G18/42 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3225 or C08G18/3271 and/or polyamines of C08G18/38 with compounds of group C08G18/3225 or polyamines of C08G18/38
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/06—Polyurethanes from polyesters
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—Polyurethanes from polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/18—Fireproof paints including high temperature resistant paints
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D5/00—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes
- C09D5/20—Coating compositions, e.g. paints, varnishes or lacquers, characterised by their physical nature or the effects produced; Filling pastes for coatings strippable as coherent films, e.g. temporary coatings strippable as coherent films
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
Abstract
The invention relates to a recyclable water-based polyurethane shielding material and a preparation method thereof, wherein the preparation method of the material comprises the following steps: (1) weighing any one or a combination of two or more of polyoxypropylene diol, polyoxypropylene triol, polytetrahydrofuran ether glycol and 3001 polyester polyol, and a plasticizer, placing the mixture in a reactor filled with nitrogen, and reacting for 15-30min under stirring at 75-95 ℃; (2) adding toluene diisocyanate, emulsifier and curing agent into the reactor, adjusting the temperature of water bath to 80-95 ℃, and stirring for 30-50 min; (3) adding polyethylene glycol monomethyl ether, continuously reacting for 1-2h, dropwise adding a cross-linking agent and a chain extender, adding deionized water to adjust the solid content to 40-60%, continuously reacting for 1-2h, and cooling; (4) and (4) adding talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material. The material is waterborne polyurethane, can realize good bonding and shielding effects, and has the advantages of high viscosity, reusability, simple operation, no pollution in post treatment and the like.
Description
Technical Field
The invention belongs to the field of polyurethane materials, and particularly relates to a recyclable water-based polyurethane shielding material and a preparation method thereof.
Background
The existing automobile parts need to be shielded at the parts which do not need to be sprayed in the processing process. For example: when the bumper is sprayed, in order to ensure that the drawing force of a radar area of the bumper is qualified and prevent paint mist from being attached to a radar pasting area, the radar hole area of the bumper needs to be shielded.
At present, the masking method is mainly based on adhesive tape or masking paper (plastic film). However, after the adhesive tape is processed on the base material at the high temperature of 80 ℃, the adhesive property of the adhesive is reduced, residual adhesive is easy to remain on the surface of the product, the post-processing is complex, the used adhesive tape cannot be reused, and the production cost is high; and the plastic film with the paint sprayed on the surface can pollute the environment after being discarded.
The invention patent CN201110137717.7 discloses a preparation method of a shielding material, which takes a polyethylene sheet as a base material, and needs to use acetone or toluene for surface treatment on the surface of the polyethylene sheet, the polyethylene is difficult to degrade, and an organic solvent is harmful to the environment and human body; the invention patent CN201711250272.7 discloses a masking material using acrylic acid as an adhesive, which has strong viscosity, but the acrylic acid adhesive has a strong odor during use, which can cause operator poisoning due to long-term contact, and the acrylic acid is corrosive, which can corrode the surface of the masking material, resulting in product rejection. In summary, since most parts of automobile bumpers are made of PP and inorganic filler blended materials, the surface polarity is low, and the common shielding materials are difficult to realize good shielding effect, the invention starts from the material bonding mechanism,aiming at that-NCO groups in the polyurethane material and inorganic filler Mg in the matrix of the shielded material3[Si4O10](OH)2The design of van der Waals force and hydrogen bond angle generated by medium-adsorption water hydroxyl enables the polyurethane shielding material to have good adhesive force and be beneficial to stripping, and the repeated use is facilitated.
Disclosure of Invention
The invention aims to provide a recyclable water-based polyurethane shielding material, which aims to solve the technical problems that the existing shielding material is easy to have residual glue on the surface of a product, is difficult to treat, cannot be recycled and is not environment-friendly.
In order to achieve the purpose, the invention is realized by adopting the following technical scheme.
A recyclable water-based polyurethane shielding material comprises the following raw materials:
preferably, the shielding material comprises the following raw materials:
as a further preference of the present invention, the plasticizer is dibutyltin dilaurate; the emulsifier is dimethylolpropionic acid (DMPA), and the chain extender is ethylenediamine; the cross-linking agent is any one or the combination of two or more of pentaerythritol, dipentaerythritol and Triethanolamine (TEA); the curing agent is isophorone diisocyanate, and the talcum powder is 1000-8000 meshes.
The invention also aims to provide a preparation method of the recyclable water-based polyurethane shielding material, which comprises the following steps:
s1, weighing any one or the combination of two or more of polyoxypropylene diol, polyoxypropylene triol, polytetrahydrofuran ether diol and 3001 polyester polyol and a plasticizer according to the parts by weight, putting the mixture into a reactor filled with nitrogen, and reacting for 15-30min under stirring at 75-95 ℃;
step S2, adding toluene diisocyanate, an emulsifier and a curing agent into a reactor, adjusting the temperature of a water bath to 80-95 ℃, and stirring for 30-50 min;
step S3, adding polyethylene glycol monomethyl ether, continuously reacting for 1-2h, then dropwise adding a cross-linking agent and a chain extender, adding deionized water to adjust the solid content to 40-60%, continuously reacting for 1-2h, and cooling;
step S4, adding talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material;
and step S5, uniformly coating the water-based polyurethane shielding material on a forming die, wherein the thickness is about 2-3mm, and drying in an oven at the temperature of 75-95 ℃ for 20-60min to obtain the formed water-based polyurethane shielding material.
The invention has the advantages and beneficial effects that:
(1) the shielding material provided by the invention is mainly applied to a shielding procedure in a spraying process, can realize good bonding and shielding effects, changes the traditional shielding mode, reduces the waste of the existing adhesive tape and plastic film during shielding, and saves production materials; in addition, the shielding material is made of waterborne polyurethane, has the advantages of high viscosity, reusability, simplicity in operation, no pollution caused by post treatment and the like, and has a good replacing effect on the traditional acrylate biaxial stretching polypropylene film adhesive tape.
(2) The shielding material provided by the invention can realize unchanged high-temperature resistance physical property, has proper bonding force with a PP material, can ensure the sealing effect, is easy to tear, does not leave residual glue, can be repeatedly used for 3-5 times, and can greatly reduce the production cost.
(3) The waterborne polyurethane shielding material provided by the invention has the characteristics of simple synthesis process, environmental protection, excellent comprehensive performance and the like, is waterborne and has flame retardant property.
Detailed Description
The present invention is described in further detail with reference to the following detailed description, but the present invention is not limited thereto, and those skilled in the art can make various modifications and substitutions based on the basic idea of the present invention without departing from the basic idea of the present invention.
Example 1
A recyclable water-based polyurethane shielding material comprises the following raw materials:
the plasticizer is dibutyltin dilaurate; the emulsifier is dimethylolpropionic acid (DMPA), and the chain extender is ethylenediamine; the cross-linking agent is any one or the combination of two or more of pentaerythritol, dipentaerythritol and Triethanolamine (TEA); the curing agent is isophorone diisocyanate, and the talcum powder is 1000 meshes.
Example 2
A preparation method of a recyclable water-based polyurethane shielding material comprises the following steps:
step S1, accurately weighing 22 parts by weight of polytetrahydrofuran ether glycol and 2 parts by weight of plasticizer (dibutyltin dilaurate), placing the polytetrahydrofuran ether glycol and the plasticizer in a reactor filled with nitrogen, and reacting for 15min under stirring at 75 ℃;
step S2, adding 15 parts by weight of toluene diisocyanate, 3 parts by weight of emulsifier (dimethylolpropionic acid (DMPA)) and 2 parts by weight of curing agent (isophorone diisocyanate) into a reactor, adjusting the temperature of a water bath to 80 ℃, and stirring for 30 min;
step S3, adding 4 parts by weight of polyethylene glycol monomethyl ether, continuously reacting for 1 hour, dropwise adding 1 part by weight of each of a cross-linking agent (triethanolamine) and a chain extender (ethylenediamine), adding deionized water to adjust the solid content to 50%, continuously reacting for 1 hour, and cooling;
step S4, adding 4 parts by weight of talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material;
and step S5, uniformly coating the water-based polyurethane shielding material on a polytetrafluoroethylene or organic silicon rubber forming die, wherein the thickness is about 2-3mm, and drying in an oven at 80 ℃ for 30min to obtain the formed shielding material.
When the shielding material is adopted for shielding, the manufactured shielding material can be directly covered on a position to be shielded, the shielding material is adhered to the position to be shielded, the shielding material has good sealing effect with plastic parts such as bumpers made of PP materials and the like, then spraying is carried out, the shielding material can be taken down after spraying and then used continuously, and after the shielding material is repeatedly used for 3-5 times, the spraying paint is thickened, so that the adhesion and the sealing performance with the plastic parts are influenced, and the shielding material cannot be used continuously.
Example 3
A preparation method of a recyclable water-based polyurethane shielding material comprises the following steps:
step S1, accurately weighing 15 parts by weight of 3001 polyester polyol and 1 part by weight of plasticizer (dibutyltin dilaurate), placing the materials into a reactor filled with nitrogen, and reacting for 15min under stirring at 90 ℃;
step S2, adding 10 parts by weight of toluene diisocyanate, 3 parts by weight of emulsifier (dimethylolpropionic acid (DMPA)) and 1 part by weight of curing agent (isophorone diisocyanate) into a reactor, adjusting the temperature of a water bath to 90 ℃, and stirring for 40 min;
step S3, adding 3 parts by weight of polyethylene glycol monomethyl ether, continuously reacting for 1 hour, dropwise adding 1 part by weight of each of a cross-linking agent (triethanolamine) and a chain extender (ethylenediamine), adding deionized water to adjust the solid content to 50%, continuously reacting for 1.5 hours, and cooling;
step S4, adding 3 parts by weight of talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material;
and step S5, uniformly coating the water-based polyurethane shielding material on a polytetrafluoroethylene or organic silicon rubber forming die, wherein the thickness is about 2-3mm, and drying in an oven at 75 ℃ for 30min to obtain the formed shielding material.
When the shielding material is adopted for shielding, the manufactured shielding material can be directly covered on a position to be shielded, the shielding material is adhered on the position to be shielded, the shielding material has good sealing effect with plastic parts such as a bumper made of PP materials and the like, then spraying is carried out, the shielding material can be taken down after spraying and then used continuously, and the shielding material can be reused for 3-5 times.
Example 4
A preparation method of a recyclable water-based polyurethane shielding material comprises the following steps:
step S1, accurately weighing 30 parts by weight of 3001 polyester polyol and 3 parts by weight of plasticizer (dibutyltin dilaurate), placing the materials into a reactor filled with nitrogen, and reacting for 15min under stirring at 80 ℃;
step S2, adding 18 parts by weight of toluene diisocyanate, 5 parts by weight of emulsifier (dimethylolpropionic acid (DMPA)) and 3 parts by weight of curing agent (isophorone diisocyanate) into a reactor, adjusting the temperature of a water bath to 80 ℃, and stirring for 40 min;
step S3, adding 6 parts by weight of polyethylene glycol monomethyl ether, continuously reacting for 1.5h, then dropwise adding 1.5 parts by weight of a cross-linking agent (triethanolamine) and a chain extender (ethylene diamine), adding deionized water to adjust the solid content to 50%, continuously reacting for 1.5h, and cooling;
s4, adding 7 parts by weight of talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material;
and step S5, uniformly coating the water-based polyurethane shielding material on a polytetrafluoroethylene or organic silicon rubber forming die, wherein the thickness is about 2-3mm, and drying in an oven at 80 ℃ for 30min to obtain the formed shielding material.
When the shielding material is adopted for shielding, the manufactured shielding material can be directly covered on a position to be shielded, the shielding material is adhered on the position to be shielded, the shielding material has good sealing effect with plastic parts such as a bumper made of PP materials and the like, then spraying is carried out, the shielding material can be taken down after spraying and then used continuously, and the shielding material can be reused for 3-5 times.
Claims (4)
1. A recyclable water-based polyurethane masking material is characterized in that: comprises the following raw materials:
2. the masking material of claim 1, wherein: the shielding material comprises the following raw materials:
3. masking material according to claim 1 or 2, characterized in that: the plasticizer is dibutyltin dilaurate; the emulsifier is dimethylolpropionic acid, and the chain extender is ethylenediamine; the cross-linking agent is any one or the combination of two or more of pentaerythritol, dipentaerythritol and triethanolamine; the curing agent is isophorone diisocyanate, and the talcum powder is 1000-8000 meshes.
4. A method of preparing a masking material of claim 1, characterized in that: the method comprises the following steps:
s1, weighing any one or the combination of two or more of polyoxypropylene diol, polyoxypropylene triol, polytetrahydrofuran ether diol and 3001 polyester polyol and a plasticizer according to the parts by weight, putting the mixture into a reactor filled with nitrogen, and reacting for 15-30min under stirring at 75-95 ℃;
step S2, adding toluene diisocyanate, an emulsifier and a curing agent into a reactor, adjusting the temperature of a water bath to 80-95 ℃, and stirring for 30-50 min;
step S3, adding polyethylene glycol monomethyl ether, continuously reacting for 1-2h, then dropwise adding a cross-linking agent and a chain extender, adding deionized water to adjust the solid content to 40-60%, continuously reacting for 1-2h, and cooling;
step S4, adding talcum powder into the raw material obtained in the step S3, and uniformly stirring to obtain the waterborne polyurethane shielding material;
and step S5, uniformly coating the water-based polyurethane shielding material on a forming die, wherein the thickness is about 2-3mm, and drying in an oven at the temperature of 75-95 ℃ for 20-60min to obtain the formed water-based polyurethane shielding material.
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Application publication date: 20210122 |