CN115260892A - Double-component polyurethane waterproof coating - Google Patents
Double-component polyurethane waterproof coating Download PDFInfo
- Publication number
- CN115260892A CN115260892A CN202210945186.2A CN202210945186A CN115260892A CN 115260892 A CN115260892 A CN 115260892A CN 202210945186 A CN202210945186 A CN 202210945186A CN 115260892 A CN115260892 A CN 115260892A
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- CN
- China
- Prior art keywords
- component
- parts
- polyurethane waterproof
- waterproof coating
- component polyurethane
- 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
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- 238000000576 coating method Methods 0.000 title claims abstract description 62
- 239000011248 coating agent Substances 0.000 title claims abstract description 59
- 239000004814 polyurethane Substances 0.000 title claims abstract description 53
- 229920002635 polyurethane Polymers 0.000 title claims abstract description 53
- 239000000463 material Substances 0.000 claims abstract description 16
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 45
- 229920000570 polyether Polymers 0.000 claims description 45
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 33
- 239000000945 filler Substances 0.000 claims description 21
- 229920005862 polyol Polymers 0.000 claims description 17
- 150000003077 polyols Chemical class 0.000 claims description 17
- 239000003963 antioxidant agent Substances 0.000 claims description 16
- 230000003078 antioxidant effect Effects 0.000 claims description 16
- 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 15
- 238000003756 stirring Methods 0.000 claims description 15
- 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 14
- NXQMCAOPTPLPRL-UHFFFAOYSA-N 2-(2-benzoyloxyethoxy)ethyl benzoate Chemical compound C=1C=CC=CC=1C(=O)OCCOCCOC(=O)C1=CC=CC=C1 NXQMCAOPTPLPRL-UHFFFAOYSA-N 0.000 claims description 12
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 12
- 239000003795 chemical substances by application Substances 0.000 claims description 12
- DOIRQSBPFJWKBE-UHFFFAOYSA-N dibutyl phthalate Chemical compound CCCCOC(=O)C1=CC=CC=C1C(=O)OCCCC DOIRQSBPFJWKBE-UHFFFAOYSA-N 0.000 claims description 12
- 239000007787 solid Substances 0.000 claims description 12
- 150000001335 aliphatic alkanes Chemical class 0.000 claims description 11
- 239000007788 liquid Substances 0.000 claims description 11
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 10
- 239000002250 absorbent Substances 0.000 claims description 10
- 230000002745 absorbent Effects 0.000 claims description 10
- 239000002270 dispersing agent Substances 0.000 claims description 10
- 239000012974 tin catalyst Substances 0.000 claims description 10
- MQIUGAXCHLFZKX-UHFFFAOYSA-N Di-n-octyl phthalate Natural products CCCCCCCCOC(=O)C1=CC=CC=C1C(=O)OCCCCCCCC MQIUGAXCHLFZKX-UHFFFAOYSA-N 0.000 claims description 9
- BJQHLKABXJIVAM-UHFFFAOYSA-N bis(2-ethylhexyl) phthalate Chemical compound CCCCC(CC)COC(=O)C1=CC=CC=C1C(=O)OCC(CC)CCCC BJQHLKABXJIVAM-UHFFFAOYSA-N 0.000 claims description 9
- 238000009835 boiling Methods 0.000 claims description 9
- 239000003431 cross linking reagent Substances 0.000 claims description 9
- 239000000203 mixture Substances 0.000 claims description 9
- 239000012188 paraffin wax Substances 0.000 claims description 8
- IBOFVQJTBBUKMU-UHFFFAOYSA-N 4,4'-methylene-bis-(2-chloroaniline) Chemical compound C1=C(Cl)C(N)=CC=C1CC1=CC=C(N)C(Cl)=C1 IBOFVQJTBBUKMU-UHFFFAOYSA-N 0.000 claims description 7
- 239000005995 Aluminium silicate Substances 0.000 claims description 7
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 7
- 235000012211 aluminium silicate Nutrition 0.000 claims description 7
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 7
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims description 7
- 239000010445 mica Substances 0.000 claims description 7
- 229910052618 mica group Inorganic materials 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 239000004952 Polyamide Substances 0.000 claims description 6
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 6
- 239000004014 plasticizer Substances 0.000 claims description 6
- 229920002647 polyamide Polymers 0.000 claims description 6
- 229920005646 polycarboxylate Polymers 0.000 claims description 6
- 239000001993 wax 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 5
- 239000006097 ultraviolet radiation absorber Substances 0.000 claims description 5
- ISWSIDIOOBJBQZ-UHFFFAOYSA-N Phenol Chemical compound OC1=CC=CC=C1 ISWSIDIOOBJBQZ-UHFFFAOYSA-N 0.000 claims description 4
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-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
- 239000006229 carbon black Substances 0.000 claims description 4
- 230000018044 dehydration Effects 0.000 claims description 4
- 238000006297 dehydration reaction Methods 0.000 claims description 4
- 239000012975 dibutyltin dilaurate Substances 0.000 claims description 4
- 150000002009 diols Chemical class 0.000 claims description 4
- 229910021485 fumed silica Inorganic materials 0.000 claims description 4
- 230000002209 hydrophobic effect Effects 0.000 claims description 4
- 239000003973 paint Substances 0.000 claims description 4
- RUELTTOHQODFPA-UHFFFAOYSA-N toluene 2,6-diisocyanate Chemical compound CC1=C(N=C=O)C=CC=C1N=C=O RUELTTOHQODFPA-UHFFFAOYSA-N 0.000 claims description 4
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 claims description 3
- 239000012964 benzotriazole Substances 0.000 claims description 3
- 239000003054 catalyst Substances 0.000 claims description 3
- SZVJSHCCFOBDDC-UHFFFAOYSA-N ferrosoferric oxide Chemical compound O=[Fe]O[Fe]O[Fe]=O SZVJSHCCFOBDDC-UHFFFAOYSA-N 0.000 claims description 3
- 238000002156 mixing Methods 0.000 claims description 3
- 239000000440 bentonite Substances 0.000 claims description 2
- 229910000278 bentonite Inorganic materials 0.000 claims description 2
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 claims description 2
- 239000000049 pigment Substances 0.000 claims description 2
- 238000002360 preparation method Methods 0.000 claims description 2
- 239000011527 polyurethane coating Substances 0.000 abstract description 9
- 230000032683 aging Effects 0.000 abstract description 5
- 239000011280 coal tar Substances 0.000 abstract description 5
- 239000002904 solvent Substances 0.000 abstract description 4
- 239000000126 substance Substances 0.000 abstract description 3
- 230000000704 physical effect Effects 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 11
- 238000006243 chemical reaction Methods 0.000 description 9
- 238000001816 cooling Methods 0.000 description 9
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 6
- 238000007599 discharging Methods 0.000 description 6
- -1 isocyanic acid radical Chemical class 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- MCPKSFINULVDNX-UHFFFAOYSA-N drometrizole Chemical compound CC1=CC=C(O)C(N2N=C3C=CC=CC3=N2)=C1 MCPKSFINULVDNX-UHFFFAOYSA-N 0.000 description 4
- 150000003254 radicals Chemical group 0.000 description 4
- 238000004078 waterproofing Methods 0.000 description 4
- WPMYUUITDBHVQZ-UHFFFAOYSA-N 3-(3,5-ditert-butyl-4-hydroxyphenyl)propanoic acid Chemical compound CC(C)(C)C1=CC(CCC(O)=O)=CC(C(C)(C)C)=C1O WPMYUUITDBHVQZ-UHFFFAOYSA-N 0.000 description 3
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 3
- DNIAPMSPPWPWGF-UHFFFAOYSA-N Propylene glycol Chemical compound CC(O)CO DNIAPMSPPWPWGF-UHFFFAOYSA-N 0.000 description 3
- 238000004132 cross linking Methods 0.000 description 3
- 229910052739 hydrogen Inorganic materials 0.000 description 3
- 239000001257 hydrogen Substances 0.000 description 3
- 239000003999 initiator Substances 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- IANQTJSKSUMEQM-UHFFFAOYSA-N 1-benzofuran Chemical compound C1=CC=C2OC=CC2=C1 IANQTJSKSUMEQM-UHFFFAOYSA-N 0.000 description 2
- UFWIBTONFRDIAS-UHFFFAOYSA-N Naphthalene Chemical compound C1=CC=CC2=CC=CC=C21 UFWIBTONFRDIAS-UHFFFAOYSA-N 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- MWPLVEDNUUSJAV-UHFFFAOYSA-N anthracene Chemical compound C1=CC=CC2=CC3=CC=CC=C3C=C21 MWPLVEDNUUSJAV-UHFFFAOYSA-N 0.000 description 2
- 238000005452 bending Methods 0.000 description 2
- 230000003197 catalytic effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 2
- 230000032798 delamination Effects 0.000 description 2
- CZZYITDELCSZES-UHFFFAOYSA-N diphenylmethane Chemical compound C=1C=CC=CC=1CC1=CC=CC=C1 CZZYITDELCSZES-UHFFFAOYSA-N 0.000 description 2
- 238000002845 discoloration Methods 0.000 description 2
- 238000001035 drying Methods 0.000 description 2
- 125000000524 functional group Chemical group 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 239000012948 isocyanate Substances 0.000 description 2
- 150000002513 isocyanates Chemical class 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 229920000642 polymer Polymers 0.000 description 2
- 239000002861 polymer material Substances 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000010298 pulverizing process Methods 0.000 description 2
- VFDYEMVVNIPATA-UHFFFAOYSA-N 2-ethyl-2-(hydroxymethyl)propane-1,3-diol;propane-1,2,3-triol Chemical compound OCC(O)CO.CCC(CO)(CO)CO VFDYEMVVNIPATA-UHFFFAOYSA-N 0.000 description 1
- 239000004971 Cross linker Substances 0.000 description 1
- XBDQKXXYIPTUBI-UHFFFAOYSA-M Propionate Chemical compound CCC([O-])=O XBDQKXXYIPTUBI-UHFFFAOYSA-M 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 150000001336 alkenes Chemical class 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 1
- 150000001491 aromatic compounds Chemical class 0.000 description 1
- 125000004432 carbon atom Chemical group C* 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000006555 catalytic reaction Methods 0.000 description 1
- 239000004927 clay Substances 0.000 description 1
- 230000001112 coagulating effect Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000010485 coping Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 1
- 238000005562 fading Methods 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- 230000014759 maintenance of location Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- JRZJOMJEPLMPRA-UHFFFAOYSA-N olefin Natural products CCCCCCCC=C JRZJOMJEPLMPRA-UHFFFAOYSA-N 0.000 description 1
- 239000005416 organic matter Substances 0.000 description 1
- 239000004482 other powder Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- NFHFRUOZVGFOOS-UHFFFAOYSA-N palladium;triphenylphosphane Chemical compound [Pd].C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1.C1=CC=CC=C1P(C=1C=CC=CC=1)C1=CC=CC=C1 NFHFRUOZVGFOOS-UHFFFAOYSA-N 0.000 description 1
- 230000000149 penetrating effect Effects 0.000 description 1
- WXZMFSXDPGVJKK-UHFFFAOYSA-N pentaerythritol Chemical compound OCC(CO)(CO)CO WXZMFSXDPGVJKK-UHFFFAOYSA-N 0.000 description 1
- 239000002530 phenolic antioxidant Substances 0.000 description 1
- 229920000768 polyamine Polymers 0.000 description 1
- 238000007151 ring opening polymerisation reaction Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000008961 swelling Effects 0.000 description 1
- 150000003606 tin compounds Chemical class 0.000 description 1
- 238000004383 yellowing Methods 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- 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
- 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
- C08G18/08—Processes
- C08G18/16—Catalysts
- C08G18/22—Catalysts containing metal compounds
- C08G18/24—Catalysts containing metal compounds of tin
- C08G18/244—Catalysts containing metal compounds of tin tin salts of carboxylic acids
- C08G18/246—Catalysts containing metal compounds of tin tin salts of carboxylic acids containing also tin-carbon bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/30—Low-molecular-weight compounds
- C08G18/32—Polyhydroxy compounds; Polyamines; Hydroxyamines
- C08G18/3203—Polyhydroxy compounds
- C08G18/3206—Polyhydroxy compounds aliphatic
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
- C08G18/4804—Two or more polyethers of different physical or chemical nature
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/65—Low-molecular-weight compounds having active hydrogen with high-molecular-weight compounds having active hydrogen
- C08G18/66—Compounds of groups C08G18/42, C08G18/48, or C08G18/52
- C08G18/6666—Compounds of group C08G18/48 or C08G18/52
- C08G18/667—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38
- C08G18/6674—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203
- C08G18/6677—Compounds of group C08G18/48 or C08G18/52 with compounds of group C08G18/32 or polyamines of C08G18/38 with compounds of group C08G18/3203 having at least three hydroxy groups
-
- 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
- C09D7/48—Stabilisers against degradation by oxygen, light or heat
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2201/00—Properties
- C08L2201/08—Stabilised against heat, light or radiation or oxydation
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Health & Medical Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Medicinal Chemistry (AREA)
- Polymers & Plastics (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Paints Or Removers (AREA)
Abstract
In order to overcome the problems that volatile substances contained in the existing polyurethane coating are harmful to human bodies and the exposed polyurethane coating is easy to discolor, pulverize, adhere and delaminate and the like when used, the invention provides a double-component polyurethane waterproof coating which is characterized by comprising a component A and a component B, wherein the two components A, B are respectively prepared, and A, B component materials are mixed and uniformly stirred according to a mass ratio to obtain the exposed solvent-free double-component polyurethane waterproof coating. The exposed solvent-free bi-component polyurethane waterproof coating provided by the invention does not contain coal tar and harmful volatile solvents, has excellent physical properties and good aging resistance, can be directly used in an exposed environment, has good waterproofness, and meets the waterproof requirements of building engineering.
Description
Technical Field
The invention belongs to the field of building waterproof materials, and particularly relates to a bi-component polyurethane waterproof coating.
Background
Since the polyurethane is synthesized for the first time by professor Bayer in 1937, the polyurethane is gradually recognized by people due to the advantages of wide adjustable range of soft and hard segments, low temperature resistance, good flexibility, strong adhesive force and the like. Polyurethane coatings have excellent abrasion resistance, flexibility and other mechanical properties, and also have good chemical resistance, and thus are widely used in various fields.
Most of the existing double-component polyurethane waterproof coatings on the market are added with benzene solvents, coal tar, coumarone and other fillers, however, the coal tar contains volatile aromatic compounds and has strong pungent smell, the anthracene, naphthalene and other components in the coal tar are extremely harmful to human bodies, the health of constructors is harmed, social harm is caused, the wide attention of the whole society is also attracted, and the construction department takes forced elimination measures for the polyurethane waterproof coatings containing the coal tar and the benzene solvents. On the other hand, most of the two-component polyurethane waterproof paint is used as a concealed project, can not be directly used in an exposed environment, and has the quality problems of color change, pulverization, bonding delamination and the like in the exposed use process, so that the water leakage and seepage phenomena of a building occur, and the service life of the building is shortened.
Disclosure of Invention
The invention provides a bi-component polyurethane waterproof coating, aiming at the quality problems of color change, pulverization, bonding delamination and the like in the exposed use process of the bi-component polyurethane waterproof coating in the prior art.
The technical scheme adopted by the invention for solving the technical problems is as follows:
the two-component polyurethane waterproof coating comprises a component A and a component B, wherein the component A comprises the following components in parts by weight based on the total weight of the component A: 55-75 parts of polyether polyol, 0.3-0.7 part of glycerol, 20-30 parts of diphenylmethane diisocyanate and 0.007-0.01 part of organic tin catalyst;
based on the total weight of the component B, the component B comprises the following components in parts by weight: 5 to 10 portions of polyether polyol, 35 to 45 portions of liquid filler, 25 to 55 portions of solid filler, 0.15 to 0.3 portion of dispersant, 0.01 to 0.05 portion of anti-settling agent, 0.8 to 1.3 portions of weather-resistant toner, 0.5 to 1.5 portions of antioxidant, 0.3 to 1.0 portion of ultraviolet absorbent and 3 to 8 portions of cross-linking agent.
Optionally, the weight ratio of the component A to the component B is 1: (2-3).
Optionally, the component A also comprises 0-15 parts of toluene diisocyanate, and the toluene diisocyanate is a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate.
Optionally, the diphenylmethane diisocyanate is a mixture of 2,4-diphenylmethane diisocyanate and 4,4' -diphenylmethane diisocyanate.
Optionally, the organic tin catalyst in the component a is one or more of dibutyltin dilaurate and stannous octoate.
Optionally, the polyether polyol in the component a is selected from one or more of polyether diol and polyether triol, and the polyether polyol in the component B is polyether triol.
Optionally, the component B further comprises 0 to 5 parts of a plasticizer, and the plasticizer is one or more of dibutyl phthalate (DBP), dioctyl phthalate (DOP) and diethylene glycol dibenzoate (DEDB).
Optionally, the solid filler comprises 5-15 parts of kaolin, 10-20 parts of mica powder and 10-20 parts of barium sulfate powder; the liquid filler comprises 52# chlorinated paraffin and high-boiling point alkane oil, and the boiling point of the high-boiling point alkane oil is more than 180-220 ℃.
Optionally, the dispersant comprises modified polycarboxylate, the anti-settling agent comprises one or more of polyamide wax, hydrophobic fumed silica and organic bentonite, the weather-resistant toner comprises one or more of iron oxide red, carbon black and iron oxide black, the cross-linking agent comprises 4,4 '-diamino-3,3' -dichlorodiphenylmethane, the antioxidant comprises hindered phenol antioxidant, and the ultraviolet absorbent comprises benzotriazole ultraviolet absorbent.
Optionally, the two-component polyurethane waterproof coating provided by the invention comprises the following steps:
the method comprises the following steps: preparing a component A: under the stirring state, placing polyether glycol and glycerol in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dehydration for 2.5-3.5 h;
step two: when the temperature of the mixed material is reduced to 50-70 ℃, adding diphenylmethane diisocyanate, reacting for 2.0-2.5 h at 80-85 ℃, adding an organic tin catalyst, continuing to react for 0.5-1.0 h, and reducing the temperature to 50-60 ℃ to obtain a component A;
step three: preparing a component B: under the stirring state, placing polyether glycol, liquid filler, weather-resistant toner, solid filler, dispersant and cross-linking agent in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dehydration for 2.0-3.0 h;
step four: when the temperature of the mixed material is reduced to 50-60 ℃, continuously adding the anti-settling agent in a dispersing way, and carrying out dispersing stirring for 30-50 min to obtain a component B;
step five: and mixing the component A and the component B to obtain the exposed solvent-free double-component polyurethane waterproof coating.
According to the two-component polyurethane waterproof coating provided by the invention, the reaction of diphenylmethane, glycerol and polyether polyol is accelerated by adopting the catalysis of the organic tin catalyst, the crosslinking density is improved, in addition, the antioxidant and the ultraviolet absorbent are added, the polyurethane can be effectively reduced from being oxidized, the damage of ultraviolet rays to a coating film is weakened, and the polyurethane coating has higher strength and better aging resistance in an exposed environment; the double-component polyurethane waterproof coating provided by the invention does not contain volatile harmful solvents, is not easy to crack, can permanently protect the structure from being damaged, and can be applied to the exposed environments of concrete roofs, steel structure roofs and the like.
Detailed Description
In order to make the technical problems, technical solutions and advantageous effects solved by the present invention more clear, the present invention is further described in detail below with reference to table 1 and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and do not limit the invention.
In the description of the present invention, "a plurality" means two or more unless otherwise specified. The present invention will be further illustrated by the following examples.
The embodiment of the invention provides a bi-component polyurethane waterproof coating, which comprises a component A and a component B, wherein the component A comprises the following components in parts by weight based on the total weight of the component A: 55-75 parts of polyether polyol, 0.3-0.7 part of glycerol, 20-30 parts of diphenylmethane diisocyanate and 0.007-0.01 part of organic tin catalyst;
based on the total weight of the component B, the component B comprises the following components in parts by weight: 5 to 10 portions of polyether polyol, 35 to 45 portions of liquid filler, 25 to 55 portions of solid filler, 0.15 to 0.3 portion of dispersant, 0.01 to 0.05 portion of anti-settling agent, 0.8 to 1.3 portions of weather-resistant toner, 0.5 to 1.5 portions of antioxidant, 0.3 to 1.0 portion of ultraviolet absorbent and 3 to 8 portions of cross-linking agent.
Specifically, in the process of preparing the component A, the organic tin catalyst is adopted to catalyze and accelerate the reaction of toluene diisocyanate and diphenylmethane with glycerol and polyether, so that the crosslinking density is improved, meanwhile, the antioxidant and the ultraviolet absorbent are added into the component B, so that the oxidation of polyurethane can be effectively reduced, the damage of ultraviolet rays to a coating film is greatly reduced, the strength of the coating film of the polyurethane coating is higher, the aging resistance is better, the coating film is not easy to crack, and the structure is durably protected from being damaged.
In some embodiments of the invention, the weight ratio of the a component to the B component is 1: (2-3).
The weight ratio of the component A to the component B is 1:2.
in some embodiments of the invention, the A component further comprises 0-15 parts of toluene diisocyanate, and the toluene diisocyanate is a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate.
The toluene diisocyanate includes 2,4-toluene diisocyanate and 2,6-Toluene Diisocyanate (TDI), which is commonly used as a curing agent for the manufacture of polyurethane coatings, are two isomers of the toluene diisocyanate.
The toluene diisocyanate in the component A is 4.97 parts, 5 parts and 9.97 parts.
In some embodiments of the invention, the diphenylmethane diisocyanate is a mixture of 2,4-diphenylmethane diisocyanate and 4,4' -diphenylmethane diisocyanate.
The diphenylmethane diisocyanate includes two isomers of 2,4-diphenylmethane diisocyanate and 4,4' -diphenylmethane diisocyanate (MDI).
In some embodiments of the present invention, the organotin catalyst in the a component is one or more of dibutyltin dilaurate and stannous octoate.
The organic tin compound can coordinate with isocyanic acid radical to polarize-NCO, so that carbon atoms with positive charges in isocyanate molecules are more active and are more easily attacked by polyol polymer hydroxyl, the organic tin has strong catalytic action on-NOC, and the organic tin catalyst has good catalytic activity in polyurethane prepolymerization and film forming and curing.
In some embodiments of the present invention, the polyether polyol in the a component is selected from one or more of polyether diol and polyether triol, and the polyether polyol in the B component is polyether triol.
The polyether polyol is an oligomer of which the main chain contains ether bonds (-R-O-R-), and the terminal group or the side group contains more than 2 hydroxyl (-OH), and the polyether polyol is subjected to ring opening polymerization with olefin oxide under the action of a catalyst by taking low molecular weight propylene glycol, glycerol trimethylolpropane and other polyols, polyamine or a compound containing active hydrogen as an initiator.
In the component A, the polyether diol takes a compound containing active hydrogen with a functional group of 2 as an initiator, and reacts with isocyanate to form a compact structure, so that the crosslinking density is improved.
The polyether triol in the component B takes a compound containing active hydrogen with a functional group of 3 as an initiator, and is crosslinked and cured with the prepolymer in the component A to form a film, so that the waterproof performance is excellent.
In some embodiments of the invention, the plasticizer is one or more of dibutyl phthalate (DBP), dioctyl phthalate (DOP), and diethylene glycol dibenzoate (DEDB).
The plasticizer is added into the bi-component polyurethane waterproof coating, so that the viscosity and the waterproofness of the coating are improved.
In some embodiments of the invention, the solid filler comprises 5-15 parts of kaolin, 10-20 parts of mica powder and 10-20 parts of barium sulfate powder; the liquid filler comprises 52# chlorinated paraffin and high-boiling-point alkane oil, and the boiling point of the high-boiling-point alkane oil is more than 180-220 ℃.
The kaolin, mica powder, barium sulfate powder and other solid fillers are added to play a role in filling a skeleton in the coating, and the rheological property of the coating can be adjusted, so that the coating can effectively prevent light from penetrating, the water resistance and the weather resistance of the coating are improved, and the service life of the coating is effectively prolonged.
The addition of the liquid filler chlorinated paraffin in the component B can improve the elongation at break of the coating, and the chlorinated paraffin has a plasticizing effect.
When the high-boiling-point alkane oil is used for coating, because the boiling point of the high-boiling-point alkane oil is high, coating popping caused by too high volatilization speed can be avoided, the appearance of the coating is smooth, and the adhesiveness and the toughness of a coating film are facilitated.
In some embodiments of the invention, the dispersant comprises a modified polycarboxylate, the anti-settling agent comprises one or more of a polyamide wax, a hydrophobic fumed silica, and an organobentonite clay, the weatherable pigment comprises one or more of iron oxide red, carbon black, and iron oxide black, the crosslinker comprises 4,4 '-diamino-3,3' -dichlorodiphenylmethane, the antioxidant comprises a hindered phenolic antioxidant, and the ultraviolet absorber comprises a benzotriazole-based ultraviolet absorber.
The dispersing agent can improve the dispersibility of solid and liquid particles which are difficult to dissolve in the coating, and can prevent other powder particles of the coating from settling and coagulating.
The component B is added with polyamide wax as an anti-settling agent, the swelling structure of the anti-settling agent is reticular, the strength and the heat resistance are good, the storage stability is good, the anti-settling effect in a coating system is excellent, and the thixotropy of the coating can be improved.
The weather-resistant toner is added into the two-component polyurethane waterproof coating, so that the time of resistance to discoloration and fading and the time of resistance to damage such as weathering, cracking, chalking and the like are effectively prolonged when the two-component polyurethane waterproof coating is applied in an exposed environment.
The cross-linking agent 4,4 '-diamino-3,3' -dichlorodiphenylmethane is used in polyurethane coating, and has the function of generating chemical bonds among linear molecules, so that the linear molecules are mutually connected and cross-linked into a net structure, and the strength and the elasticity of the high polymer material are improved.
The hindered phenol antioxidant in the double-component polyurethane waterproof coating is pentaerythritol tetrakis [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionate ], and the hindered phenol antioxidant is a free radical capture type antioxidant which can prevent a free radical chain reaction by capturing free radicals generated during decomposition of organic matters, so that degradation and yellowing of organic matter molecules are slowed down.
The 2- (2-hydroxy-5-methylphenyl) benzotriazole can be used as an ultraviolet absorbent, can effectively capture active free radicals generated by high polymer materials under the action of ultraviolet rays, can exert the light stability effect, is particularly suitable for high polymer compounds such as polyurethane, can effectively inhibit the damage of the ultraviolet rays to the polyurethane coating, and enables the polyurethane coating to have higher strength and better aging resistance in an exposed environment.
The invention also provides a preparation method of the two-component polyurethane waterproof coating, which comprises the following steps:
the method comprises the following steps: preparing a component A: under the stirring state, placing polyether glycol and glycerol in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dewatering for 2.5-3.5 h;
step two: when the temperature of the mixed material is reduced to 50-70 ℃, adding diphenylmethane diisocyanate, reacting for 2.0-2.5 h at 80-85 ℃, adding an organic tin catalyst, continuing to react for 0.5-1.0 h, and reducing the temperature to 50-60 ℃ to obtain a component A;
step three: preparing a component B: under the stirring state, placing polyether glycol, liquid filler, weather-resistant toner, solid filler, dispersant and cross-linking agent in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dehydration for 2.0-3.0 h;
step four: when the temperature of the mixed material is reduced to 50-60 ℃, continuously adding the anti-settling agent in a dispersing way, and carrying out dispersing stirring for 30-50 min to obtain a component B;
step five: and mixing the component A and the component B to obtain the exposed solvent-free double-component polyurethane waterproof coating.
The invention is further illustrated by the following specific examples:
example 1
This example is for illustrating the present invention discloses a two-component polyurethane waterproof coating, which comprises the following steps:
step one, preparing a component A:
adding 20 parts of polyether DL-1000D, 40 parts of polyether DL-2000D, 15 parts of polyether EP-330NG and 0.3 part of glycerol into a reaction kettle, dehydrating for 3 hours at the temperature of 100-105 ℃ and under the vacuum pressure of-0.08 MPa to-0.1 MPa in the stirring state, then cooling the mixture to 70 ℃, adding 4.97 parts of TDI and 20 parts of MDI-50, reacting for 2 hours at 80 ℃, adding 0.03 part of dibutyltin dilaurate, continuing to react for 1 hour, cooling to 50-60 ℃, discharging and barreling;
step two, preparing a component B:
5 parts of polyether EP-330NG, 5 parts of DOP, 25 parts of 52# chlorinated paraffin, 10 parts of high-boiling alkane oil, 10 parts of 800-mesh kaolin, 1.0 part of iron oxide red, 20 parts of 800-mesh mica powder, 17 parts of 1200-mesh barium sulfate powder, 0.2 part of modified polycarboxylate, 5 parts of 4,4 '-diamino-3,3' -dichlorodiphenylmethane, dehydrating for 3 hours at the temperature of 100-105 ℃ and under the vacuum pressure of-0.08 MPa to-0.1 MPa, cooling to 50-60 ℃, continuously adding 0.05 part of polyamide wax, 1.25 parts of tetra [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and 0.5 part of 2- (2-hydroxy-5-methylphenyl) benzotriazole in a dispersing and stirring for 30-50 min, discharging and barreling;
step three: the A, B component materials are mixed according to the mass ratio of 1:2, and the exposed solvent-free double-component polyurethane waterproof coating is obtained after 24h reaction and curing.
Example 2
This example is for illustrating the present invention discloses a two-component polyurethane waterproof coating, which comprises the following steps:
step one, preparing a component A:
adding 25 parts of polyether DL-1000D, 35 parts of polyether DL-2000D, 10 parts of polyether EP-330NG and 0.5 part of glycerol into a reaction kettle, dehydrating for 3 hours at the temperature of 100-105 ℃ and under the vacuum pressure of-0.08 MPa to-0.1 MPa in the stirring state, then cooling the mixture to 70 ℃, adding 5 parts of TDI and 24.97 parts of MDI-50, reacting for 2 hours at 80 ℃, adding 0.03 part of stannous octoate, continuing to react for 1 hour, cooling to 50-60 ℃, discharging and barreling;
step two, preparing a component B:
9.25 parts of polyether EP-330NG, 3 parts of DOP, 20 parts of 52# chlorinated paraffin, 15 parts of high-boiling alkane oil, 15 parts of 800-mesh kaolin, 1.0 part of carbon black, 15 parts of 800-mesh mica powder, 16 parts of 1200-mesh barium sulfate powder, 0.2 part of modified polycarboxylate, 4 parts of 4,4 '-diamino-3,3' -dichlorodiphenylmethane, dehydrating for 3 hours at the temperature of 100-105 ℃ and under the vacuum pressure of-0.08 MPa to-0.1 MPa, cooling to 50-60 ℃, continuously dispersing and adding 0.05 part of hydrophobic fumed silica, 1.0 part of tetra [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and 0.5 part of 2- (2-hydroxy-5-methylphenyl) benzotriazole, dispersing and stirring for 30-50 min, discharging and barreling;
step three: the A, B component materials are mixed according to the mass ratio of 1:2, and the exposed solvent-free double-component polyurethane waterproof coating is obtained after 24h reaction and curing.
Example 3
This example is used to illustrate that the two-component polyurethane waterproof coating disclosed by the present invention comprises the following operation steps:
step one, preparing a component A:
adding 25 parts of polyether DL-1000D, 25 parts of polyether DL-2000D, 15 parts of polyether EP-330NG and 0.3 part of glycerol into a reaction kettle, controlling the temperature to be 100-105 ℃ and dehydrating for 3 hours under the vacuum of-0.08 MPa to-0.1 MPa under the stirring state, then cooling the mixture to 70 ℃, adding 9.97 parts of TDI and 25 parts of MDI-50, reacting for 2 hours at 80 ℃, adding 0.03 part of stannous octoate, continuing to react for 1 hour, cooling to 50-60 ℃, discharging and barreling;
step two, preparing a component B:
7 parts of polyether EP-330NG, 5 parts of DOP, 35 parts of No. 52 chlorinated paraffin, 10 parts of high-boiling point alkane oil, 5 parts of 800-mesh kaolin, 1.0 part of iron oxide red, 13.2 parts of 800-mesh mica powder, 15 parts of 1200-mesh barium sulfate powder, 0.3 part of modified polycarboxylate, 6 parts of 4,4 '-diamino-3,3' -dichlorodiphenylmethane, dewatering for 3 hours at 100-105 ℃ and under the vacuum pressure of-0.08 MPa to-0.1 MPa, cooling to 50-60 ℃, continuously adding 0.05 part of polyamide wax, 1.45 parts of tetra [ beta- (3,5-di-tert-butyl-4-hydroxyphenyl) propionic acid ] pentaerythritol ester and 1 part of 2- (2-hydroxy-5-methylphenyl) benzotriazole in a dispersing and stirring manner for 30-50 min, discharging and barreling;
step three: the A, B component materials are mixed according to the mass ratio of 1:2, and the exposed solvent-free double-component polyurethane waterproof coating is obtained after 24h reaction and curing.
Comparative example 1
This comparative example, which is used for comparative illustration of the two-component polyurethane waterproofing coating disclosed by the present invention, comprises most of the operating steps of example 1, except that:
and an antioxidant and an ultraviolet absorber are not added in the component B.
Comparative example 2
This comparative example, which is used for comparative illustration of the two-component polyurethane waterproofing coating disclosed by the present invention, comprises most of the operating steps of example 2, except that:
and an antioxidant and an ultraviolet absorbent are not added in the component B.
Comparative example 3
This comparative example, which is used for comparative illustration of the two-component polyurethane waterproofing coating disclosed by the present invention, comprises most of the operating steps of example 3, except that:
and an antioxidant and an ultraviolet absorbent are not added in the component B.
The two-component polyurethane waterproofing coatings prepared in the above examples 1 to 3 and comparative examples 1 to 3 were subjected to main property tests:
the results are shown in Table 1.
TABLE 1
From the test results in table 1, the two-component polyurethane waterproof coating prepared by the invention can reach the standard specified by the national standard type I in the aspects of solid content, surface drying time, actual drying time, tensile strength, elongation at break, tearing strength, low-temperature bending property, water impermeability, artificial weathering aging (tensile strength retention rate, elongation at break, low-temperature bending property) and other physical properties.
As can be seen from the test results of examples 1 to 3 and comparative examples 1 to 3 in Table 1, the two-component polyurethane waterproof coating provided by the invention has better effect in the test of coping with the artificial weathering environment, namely, the two-component polyurethane waterproof coating provided by the invention is more suitable for being used in the exposed environment, and has outstanding resistance to strong oxidative discoloration and strong ultraviolet ray.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The two-component polyurethane waterproof coating is characterized by comprising a component A and a component B, wherein the component A comprises the following components in parts by weight based on the total weight of the component A: 55-75 parts of polyether polyol, 0.3-0.7 part of glycerol, 20-30 parts of diphenylmethane diisocyanate and 0.007-0.01 part of organic tin catalyst;
based on the total weight of the component B, the component B comprises the following components in parts by weight: 5 to 10 portions of polyether polyol, 35 to 45 portions of liquid filler, 25 to 55 portions of solid filler, 0.15 to 0.3 portion of dispersant, 0.01 to 0.05 portion of anti-settling agent, 0.8 to 1.3 portions of weather-resistant toner, 0.5 to 1.5 portions of antioxidant, 0.3 to 1.0 portion of ultraviolet absorbent and 3 to 8 portions of cross-linking agent.
2. The two-component polyurethane waterproof paint as claimed in claim 1, wherein the weight ratio of the component A to the component B is 1: (2-3).
3. The two-component polyurethane waterproof paint of claim 1, characterized in that the component A further comprises 0-15 parts of toluene diisocyanate, and the toluene diisocyanate is a mixture of 2,4-toluene diisocyanate and 2,6-toluene diisocyanate.
4. The two-component polyurethane waterproof coating material of claim 1, wherein the diphenylmethane diisocyanate is a mixture of 2,4-diphenylmethane diisocyanate and 4,4' -diphenylmethane diisocyanate.
5. The two-component polyurethane waterproof coating material of claim 1, wherein the organotin catalyst in the A component is one or more of dibutyltin dilaurate and stannous octoate.
6. The two-component polyurethane waterproof coating material according to claim 1, wherein the polyether polyol in the A component is one or more selected from polyether diol and polyether triol, and the polyether polyol in the B component is polyether triol.
7. The two-component polyurethane waterproof coating material of claim 1, wherein the component B further comprises 0-5 parts of a plasticizer, and the plasticizer is one or more of dibutyl phthalate (DBP), dioctyl phthalate (DOP) and diethylene glycol dibenzoate (DEDB).
8. The two-component polyurethane waterproof paint as claimed in claim 1, wherein the solid filler comprises 5-15 parts of kaolin, 10-20 parts of mica powder and 10-20 parts of barium sulfate powder; the liquid filler comprises 52# chlorinated paraffin and high-boiling-point alkane oil, and the boiling point of the high-boiling-point alkane oil is more than 180-220 ℃.
9. The two-component polyurethane waterproof coating of claim 1, wherein the dispersant comprises modified polycarboxylate, the anti-settling agent comprises one or more of polyamide wax, hydrophobic fumed silica and organic bentonite, the weather-resistant pigment comprises one or more of iron oxide red, carbon black and iron oxide black, the cross-linking agent comprises 4,4 '-diamino-3,3' -dichlorodiphenylmethane, the antioxidant comprises hindered phenol antioxidant, and the ultraviolet absorber comprises benzotriazole ultraviolet absorber.
10. The preparation method of the two-component polyurethane waterproof coating material according to any one of claims 1 to 9, characterized by comprising the following steps:
the method comprises the following steps: preparing a component A: under the stirring state, placing polyether glycol and glycerol in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dewatering for 2.5-3.5 h;
step two: when the temperature of the mixed material is reduced to 50-70 ℃, adding diphenylmethane diisocyanate, reacting for 2.0-2.5 h at 80-85 ℃, adding an organic tin catalyst, continuing to react for 0.5-1.0 h, and reducing the temperature to 50-60 ℃ to obtain a component A;
step three: preparing a component B: under the stirring state, placing polyether glycol, liquid filler, weather-resistant toner, solid filler, dispersant and cross-linking agent in an environment with the temperature of 100-105 ℃ and the vacuum pressure of-0.08 MPa to-0.1 MPa for dehydration for 2.0-3.0 h;
step four: when the temperature of the mixed material is reduced to 50-60 ℃, continuously adding the anti-settling agent in a dispersing way, and carrying out dispersing stirring for 30-50 min to obtain a component B;
step five: and mixing the component A and the component B to obtain the exposed solvent-free double-component polyurethane waterproof coating.
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| CN116355518A (en) * | 2023-04-03 | 2023-06-30 | 广东绿树环保涂料科技有限公司 | Preparation method of polyurethane waterproof coating |
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