CN106811037B - A kind of Polyaspartic Polyurea coating and its application - Google Patents
A kind of Polyaspartic Polyurea coating and its application Download PDFInfo
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- CN106811037B CN106811037B CN201710020708.7A CN201710020708A CN106811037B CN 106811037 B CN106811037 B CN 106811037B CN 201710020708 A CN201710020708 A CN 201710020708A CN 106811037 B CN106811037 B CN 106811037B
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- polyurea coating
- defoaming agent
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- 238000000576 coating method Methods 0.000 title claims abstract description 81
- 239000011248 coating agent Substances 0.000 title claims abstract description 70
- 229920002396 Polyurea Polymers 0.000 title claims abstract description 55
- 229920000608 Polyaspartic Polymers 0.000 title abstract description 36
- 150000002148 esters Chemical class 0.000 claims abstract description 55
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 39
- 239000002518 antifoaming agent Substances 0.000 claims abstract description 28
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 28
- 239000002270 dispersing agent Substances 0.000 claims abstract description 26
- 229920000805 Polyaspartic acid Polymers 0.000 claims abstract description 23
- 229920001228 polyisocyanate Polymers 0.000 claims abstract description 11
- 239000005056 polyisocyanate Substances 0.000 claims abstract description 11
- 239000000945 filler Substances 0.000 claims abstract description 10
- 239000013008 thixotropic agent Substances 0.000 claims abstract description 9
- 239000004721 Polyphenylene oxide Substances 0.000 claims description 46
- 229920000570 polyether Polymers 0.000 claims description 46
- 230000002745 absorbent Effects 0.000 claims description 24
- 239000002250 absorbent Substances 0.000 claims description 24
- 238000009736 wetting Methods 0.000 claims description 24
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 22
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical group O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 17
- 239000013530 defoamer Substances 0.000 claims description 17
- 150000001412 amines Chemical class 0.000 claims description 14
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical class CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 14
- 239000000843 powder Substances 0.000 claims description 13
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 12
- 229910052791 calcium Inorganic materials 0.000 claims description 12
- 239000011575 calcium Substances 0.000 claims description 12
- 239000002994 raw material Substances 0.000 claims description 12
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 claims description 11
- 229910052710 silicon Inorganic materials 0.000 claims description 11
- 239000010703 silicon Substances 0.000 claims description 11
- -1 polyethylene Polymers 0.000 claims description 10
- BPQQTUXANYXVAA-UHFFFAOYSA-N Orthosilicate Chemical group [O-][Si]([O-])([O-])[O-] BPQQTUXANYXVAA-UHFFFAOYSA-N 0.000 claims description 9
- 125000000391 vinyl group Chemical group [H]C([*])=C([H])[H] 0.000 claims description 9
- 229920002554 vinyl polymer Polymers 0.000 claims description 9
- LYCAIKOWRPUZTN-UHFFFAOYSA-N Ethylene glycol Chemical compound OCCO LYCAIKOWRPUZTN-UHFFFAOYSA-N 0.000 claims description 8
- 150000002009 diols Chemical class 0.000 claims description 8
- 229910021485 fumed silica Inorganic materials 0.000 claims description 7
- VGGSQFUCUMXWEO-UHFFFAOYSA-N Ethene Chemical compound C=C VGGSQFUCUMXWEO-UHFFFAOYSA-N 0.000 claims description 5
- 239000005977 Ethylene Substances 0.000 claims description 5
- 239000000377 silicon dioxide Substances 0.000 claims description 5
- 235000012239 silicon dioxide Nutrition 0.000 claims description 5
- 239000000203 mixture Substances 0.000 claims description 4
- WGCNASOHLSPBMP-UHFFFAOYSA-N hydroxyacetaldehyde Natural products OCC=O WGCNASOHLSPBMP-UHFFFAOYSA-N 0.000 claims description 3
- 229920001610 polycaprolactone Polymers 0.000 claims description 3
- 239000004632 polycaprolactone Substances 0.000 claims description 3
- 239000004417 polycarbonate Substances 0.000 claims description 3
- 229920000515 polycarbonate Polymers 0.000 claims description 3
- 229920001451 polypropylene glycol Polymers 0.000 claims description 3
- 239000004698 Polyethylene Substances 0.000 claims description 2
- 239000002202 Polyethylene glycol Substances 0.000 claims description 2
- XSTXAVWGXDQKEL-UHFFFAOYSA-N Trichloroethylene Chemical compound ClC=C(Cl)Cl XSTXAVWGXDQKEL-UHFFFAOYSA-N 0.000 claims description 2
- ZJCCRDAZUWHFQH-UHFFFAOYSA-N Trimethylolpropane Chemical compound CCC(CO)(CO)CO ZJCCRDAZUWHFQH-UHFFFAOYSA-N 0.000 claims description 2
- 229920000573 polyethylene Polymers 0.000 claims description 2
- 229920001223 polyethylene glycol Polymers 0.000 claims description 2
- 229920000223 polyglycerol Polymers 0.000 claims description 2
- 229920000909 polytetrahydrofuran Polymers 0.000 claims description 2
- 230000007797 corrosion Effects 0.000 claims 1
- 238000005260 corrosion Methods 0.000 claims 1
- 239000011253 protective coating Substances 0.000 claims 1
- 230000002940 repellent Effects 0.000 claims 1
- 239000005871 repellent Substances 0.000 claims 1
- 239000000853 adhesive Substances 0.000 abstract description 7
- 230000001070 adhesive effect Effects 0.000 abstract description 7
- 239000000463 material Substances 0.000 abstract description 4
- 230000007613 environmental effect Effects 0.000 abstract description 3
- 239000003973 paint Substances 0.000 abstract description 3
- 230000008859 change Effects 0.000 abstract description 2
- 238000012423 maintenance Methods 0.000 abstract description 2
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 abstract 2
- 239000006096 absorbing agent Substances 0.000 abstract 1
- 235000013877 carbamide Nutrition 0.000 abstract 1
- 239000004202 carbamide Substances 0.000 abstract 1
- 238000010276 construction Methods 0.000 description 6
- 230000006872 improvement Effects 0.000 description 6
- 230000002194 synthesizing effect Effects 0.000 description 6
- 239000000178 monomer Substances 0.000 description 5
- 230000000694 effects Effects 0.000 description 4
- 125000000524 functional group Chemical group 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 238000005259 measurement Methods 0.000 description 3
- NIXOWILDQLNWCW-UHFFFAOYSA-M Acrylate Chemical compound [O-]C(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-M 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 2
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 2
- 235000012211 aluminium silicate Nutrition 0.000 description 2
- 235000003704 aspartic acid Nutrition 0.000 description 2
- OQFSQFPPLPISGP-UHFFFAOYSA-N beta-carboxyaspartic acid Natural products OC(=O)C(N)C(C(O)=O)C(O)=O OQFSQFPPLPISGP-UHFFFAOYSA-N 0.000 description 2
- 239000003795 chemical substances by application Substances 0.000 description 2
- 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 description 2
- 238000011049 filling Methods 0.000 description 2
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 238000002360 preparation method Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 150000003376 silicon Chemical class 0.000 description 2
- VOZKAJLKRJDJLL-UHFFFAOYSA-N 2,4-diaminotoluene Chemical compound CC1=CC=C(N)C=C1N VOZKAJLKRJDJLL-UHFFFAOYSA-N 0.000 description 1
- SMZOUWXMTYCWNB-UHFFFAOYSA-N 2-(2-methoxy-5-methylphenyl)ethanamine Chemical compound COC1=CC=C(C)C=C1CCN SMZOUWXMTYCWNB-UHFFFAOYSA-N 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N 2-Propenoic acid Natural products OC(=O)C=C NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- RNLHGQLZWXBQNY-UHFFFAOYSA-N 3-(aminomethyl)-3,5,5-trimethylcyclohexan-1-amine Chemical compound CC1(C)CC(N)CC(C)(CN)C1 RNLHGQLZWXBQNY-UHFFFAOYSA-N 0.000 description 1
- IEPRKVQEAMIZSS-UHFFFAOYSA-N Di-Et ester-Fumaric acid Natural products CCOC(=O)C=CC(=O)OCC IEPRKVQEAMIZSS-UHFFFAOYSA-N 0.000 description 1
- IEPRKVQEAMIZSS-WAYWQWQTSA-N Diethyl maleate Chemical compound CCOC(=O)\C=C/C(=O)OCC IEPRKVQEAMIZSS-WAYWQWQTSA-N 0.000 description 1
- PIICEJLVQHRZGT-UHFFFAOYSA-N Ethylenediamine Chemical compound NCCN PIICEJLVQHRZGT-UHFFFAOYSA-N 0.000 description 1
- CERQOIWHTDAKMF-UHFFFAOYSA-M Methacrylate Chemical compound CC(=C)C([O-])=O CERQOIWHTDAKMF-UHFFFAOYSA-M 0.000 description 1
- FDLQZKYLHJJBHD-UHFFFAOYSA-N [3-(aminomethyl)phenyl]methanamine Chemical compound NCC1=CC=CC(CN)=C1 FDLQZKYLHJJBHD-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000032683 aging Effects 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- XLJMAIOERFSOGZ-UHFFFAOYSA-N anhydrous cyanic acid Natural products OC#N XLJMAIOERFSOGZ-UHFFFAOYSA-N 0.000 description 1
- 239000010426 asphalt Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- QVYARBLCAHCSFJ-UHFFFAOYSA-N butane-1,1-diamine Chemical compound CCCC(N)N QVYARBLCAHCSFJ-UHFFFAOYSA-N 0.000 description 1
- 229910000019 calcium carbonate Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000032798 delamination Effects 0.000 description 1
- 230000001934 delay Effects 0.000 description 1
- JBSLOWBPDRZSMB-BQYQJAHWSA-N dibutyl (e)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C\C(=O)OCCCC JBSLOWBPDRZSMB-BQYQJAHWSA-N 0.000 description 1
- JBSLOWBPDRZSMB-FPLPWBNLSA-N dibutyl (z)-but-2-enedioate Chemical compound CCCCOC(=O)\C=C/C(=O)OCCCC JBSLOWBPDRZSMB-FPLPWBNLSA-N 0.000 description 1
- LDCRTTXIJACKKU-ARJAWSKDSA-N dimethyl maleate Chemical compound COC(=O)\C=C/C(=O)OC LDCRTTXIJACKKU-ARJAWSKDSA-N 0.000 description 1
- 239000003995 emulsifying agent Substances 0.000 description 1
- 230000001804 emulsifying effect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000005187 foaming Methods 0.000 description 1
- XLYMOEINVGRTEX-UHFFFAOYSA-N fumaric acid monoethyl ester Natural products CCOC(=O)C=CC(O)=O XLYMOEINVGRTEX-UHFFFAOYSA-N 0.000 description 1
- 238000001879 gelation Methods 0.000 description 1
- 239000004519 grease Substances 0.000 description 1
- SYECJBOWSGTPLU-UHFFFAOYSA-N hexane-1,1-diamine Chemical compound CCCCCC(N)N SYECJBOWSGTPLU-UHFFFAOYSA-N 0.000 description 1
- NAQMVNRVTILPCV-UHFFFAOYSA-N hexane-1,6-diamine Chemical compound NCCCCCCN NAQMVNRVTILPCV-UHFFFAOYSA-N 0.000 description 1
- NWOJEYNEKIVOOF-UHFFFAOYSA-N hexane-2,2-diamine Chemical compound CCCCC(C)(N)N NWOJEYNEKIVOOF-UHFFFAOYSA-N 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- ZMVMYBGDGJLCHV-UHFFFAOYSA-N n-methyl-4-[[4-(methylamino)phenyl]methyl]aniline Chemical compound C1=CC(NC)=CC=C1CC1=CC=C(NC)C=C1 ZMVMYBGDGJLCHV-UHFFFAOYSA-N 0.000 description 1
- 231100000956 nontoxicity Toxicity 0.000 description 1
- 229920000555 poly(dimethylsilanediyl) polymer Polymers 0.000 description 1
- 239000011527 polyurethane coating Substances 0.000 description 1
- 239000002244 precipitate Substances 0.000 description 1
- 125000002924 primary amino group Chemical group [H]N([H])* 0.000 description 1
- 238000010298 pulverizing process Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000013558 reference substance Substances 0.000 description 1
- 238000005507 spraying Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 239000000758 substrate Substances 0.000 description 1
- 239000002344 surface layer Substances 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002562 thickening agent Substances 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
- C09D175/02—Polyureas
-
- 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
- C09D5/08—Anti-corrosive 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
- 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
-
- 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
- C09D7/65—Additives macromolecular
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08L—COMPOSITIONS OF MACROMOLECULAR COMPOUNDS
- C08L2205/00—Polymer mixtures characterised by other features
- C08L2205/03—Polymer mixtures characterised by other features containing three or more polymers in a blend
- C08L2205/035—Polymer mixtures characterised by other features containing three or more polymers in a blend containing four or more polymers in a blend
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- Chemical & Material Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Paints Or Removers (AREA)
- Polyurethanes Or Polyureas (AREA)
Abstract
The invention discloses a kind of Polyaspartic Polyurea coating and its application, the Polyaspartic Polyurea coating includes: component A and B component;The component A includes polyaspartic ester, defoaming agent, dispersing agent, thixotropic agent, filler and water absorbing agent;The B component is polyether-modified polyisocyanates;It is 1:3~2:1 that component A and B component, which are mass ratio,.Poly-aspartic-acid carbamide paint of the invention has good flexibility and waterproofness, and adhesive force is stronger;These good characteristics enable coating of the invention preferably as the buffer layer of coating system, to greatly improve the ability that waterproof material resists environmental change in practical applications, extend and use the time, reduce maintenance cost.
Description
Technical Field
The invention belongs to the technical field of chemical coating preparation, and particularly relates to a polyaspartic ester polyurea coating and application thereof.
Background
Currently, waterproof coatings used in the market include asphalt, acrylate coatings, polyurethane coatings and modified coatings. Because these waterproof coatings have long curing time, poor weather resistance and poor light resistance, the coatings deform and lose effectiveness after a period of use, and the waterproof effect is lost.
The polyurea coating is a novel waterproof coating developed in the last decade, and has the outstanding advantages of instant mixing and continuous spraying, excellent aging resistance, long service time, no toxicity and no pollution; however, the gel is too fast to facilitate the construction by technicians; meanwhile, the wettability is poor, the adhesive force is low, the hardness is poor and the like. Therefore, technologists continue to improve and develop polyaspartic ester polyurea coatings, which can solve the problems of too short gelling time and high requirements on construction equipment, and improve the comprehensive performance of the coatings. The Chinese invention patent (with the patent number of CN200710173351.2) discloses a preparation method of polyaspartic ester polyurea waterproof paint, which is based on polyaspartic ester and takes polyisocyanate as a curing agent. The coating disclosed by the invention not only preserves the excellent performance of the traditional polyurea coating, but also overcomes the defects that the gelation time is too fast and special equipment is required for construction; the paint also has strong adhesive force, good toughness and weather resistance, and the like. In order to meet the more stringent requirements of the customers for coatings, the properties of polyaspartate polyurea coatings are subject to further improvement.
Disclosure of Invention
The invention aims to further improve the comprehensive performance of the polyaspartic ester polyurea coating and provides the polyaspartic ester polyurea coating and the application thereof.
The technical scheme of the invention is as follows: a polyaspartate polyurea coating, comprising: a component A and a component B; wherein,
the component A comprises polyaspartic acid ester, a defoaming agent, a wetting dispersant, a thixotropic agent, a filler and a water absorbent;
the component B is polyether modified polyisocyanate;
the mass ratio of the component A to the component B is 1: 3-2: 1.
The polyaspartic acid ester is synthesized by a polyamino monomer and an unsaturated functional group monomer; the polyamino monomer is at least one of ethylenediamine, butanediamine, hexanediamine, methyl pentanediamine, toluene diamine, m-xylylenediamine, 1, 6 hexanediamine, isophorone diamine and dimethyl diamino diphenylmethane; the unsaturated functional group monomer is at least one of acrylic acid, acrylate, methacrylate, dimethyl maleate, diethyl maleate, dibutyl maleate, dimethyl ethyl fumarate and dibutyl fumarate. The aspartic acid ester increases the steric hindrance effect by introducing unsaturated monomer ester, delays the reaction speed between the amino functional group and the isocyanic acid radical, thereby being capable of controllably and smoothly completing the reaction, prolonging the gel time and improving the convenience of construction of technical personnel.
In the technical scheme, the defoaming agent is at least one of an ethylene defoaming agent and an organic silicon defoaming agent, the dispersing agent is a polyether amine wetting dispersing agent, the thixotropic agent is silicon dioxide, the filler is at least one of heavy calcium powder and barium sulfate, and the water absorbent is a silicate water absorbent.
The ethylene defoaming agent belongs to polyether defoaming agents, the organic silicon defoaming agent is formed by mechanically emulsifying silicone grease, an emulsifier, a waterproof agent, a thickening agent and the like, and the main component of the organic silicon defoaming agent is linear polysiloxane which keeps liquid state at room temperature, such as polydimethylsilane, fluorosilicone, ethylene glycol siloxane and the like; the thixotropic agent is various, such as silicon dioxide, kaolin and the like, wherein the silicon dioxide can be divided into precipitate and gas phase, and the gas phase silicon dioxide enables the coating to have better fluidity under the action of mechanical force; the filling material comprises talcum powder, heavy calcium powder, barium sulfate and the like, and the heavy calcium powder and the barium sulfate are used as the filling material, so that the tensile strength, the tearing strength, the hardness and the like can be enhanced; the polyetheramine wetting dispersant active is preferably a polyethermonoamine.
In an improvement of the above technical solution, the modified polyether used in the polyether-modified polyisocyanate is at least one of polycarbonate diol, polytetrahydrofuran diol, polypropylene glycol, polyglycerol, polyethylene glycol, polyethylene triol, poly trimethylolpropane, polytetramethylene glycol and polycaprolactone diol.
As a further improvement of the technical scheme, the polyether modified polyisocyanate is polyether modified toluene diisocyanate.
As an improvement of the technical scheme, the component A and the component B are equal in mass.
As a further improvement of the scheme, the component A comprises the following raw materials in parts by weight: 40-50 parts of polyaspartic acid ester, 1-4 parts of defoaming agent, 1-3 parts of wetting dispersant, 0.1-1 part of thixotropic agent, 44-55 parts of filler and 2-5 parts of water absorbent.
The scheme is further improved, and the defoaming agent is a mixture of 0.5-2 parts of vinyl defoaming agent and 0.5-2 parts of organosilicon defoaming agent; the filler is a mixture of 36-40 parts of heavy calcium powder and 8-15 parts of barium sulfate.
Preferably, the ethylene defoaming agent is ZY-357, the organosilicon defoaming agent LY-A series, and ZY-357 and LY-A are equal in mass. The defoaming agent has to have certain incompatibility with a foaming system to play a defoaming effect, and in view of the complexity of a coating system, the defoaming effect can be enhanced by using ZY-357 and LY-A with equal mass.
As a further improvement of the scheme, the component A comprises the following raw materials in parts by weight: 41 parts of polyaspartic acid ester, 1.5 parts of vinyl defoamer, 1.5 parts of organic silicon defoamer, 2.8 parts of polyether amine wetting dispersant, 0.7 part of fumed silica, 37.5 parts of heavy calcium powder, 11 parts of barium sulfate and 4 parts of silicate water absorbent; the component B is 100 parts of polyether modified toluene diisocyanate. Preferably, the polyether amine wetting dispersant is Hensman L207, and the silicate water absorbent is Sylosiv A3And (3) pulverizing.
In addition, the invention also provides application of the polyaspartic ester polyurea coating as a middle coating of a polyaspartic ester polyurea waterproof and anticorrosive coating system.
In addition, the invention also provides a polyaspartic ester polyurea waterproof and anticorrosive coating system which comprises the polyaspartic ester polyurea coating.
The invention relates to a polyaspartic acid ester polyurea waterproof anticorrosive coating system, which comprises a closed bottom coating, a middle coating and a weather-resistant top coating, wherein the polyaspartic acid ester polyurea coating is used as an elastic buffer layer in the coating system, and the middle coating can absorb the expansion of a substrate caused by various reasons and can not cause the surface layer to generate larger deformation and crack; the middle coating has strong adhesive force, does not cause delamination and bulging, and prolongs the service life.
The invention has the beneficial effects that: the polyaspartate polyurea coating of the invention comprises: the component A comprises aspartic acid ester, a defoaming agent, a wetting dispersant, a thixotropic agent, a filler and a water absorbent, the component B is polyether modified polyisocyanate, and the weight parts of various raw materials in the component A are adjusted, so that the various raw materials are organically combined, and the comprehensive performance of the polyaspartic acid polyurea coating is improved: 1) the gel time is prolonged, so that the construction of technicians is facilitated; 2) enhancing flexibility: such as tensile strength, tear strength, elongation at break, and the like; 3) the adhesive force is improved. When the polyaspartic acid ester polyurea coating is used as the middle layer of a coating system, the polyaspartic acid ester polyurea coating can adapt to environmental changes and prolong the service life of the coating.
Detailed Description
To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples.
Example 1
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are respectively as follows: 46 parts of polyaspartic acid ester, 2 parts of polyether modified silicon defoamer, 2.6 parts of polyether ammonia wetting dispersant, 0.4 part of fumed silica, 44 parts of talcum powder and 5 parts of water absorbent; the component B is 50 parts of polyether modified toluene diisocyanate.
In the embodiment, the polyaspartic ester is Bayer NH1420, the polyether modified silicon defoamer is Wancheng BYC-710, the polyether amine wetting dispersant is Hensmei FM-300, the water absorbent is Dibaa-30X, and the modified polyether used by the polyether modified toluene diisocyanate is polycarbonate diol.
Example 2
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are respectively as follows: 40 parts of polyaspartic acid ester, 1 part of vinyl defoamer, 1 part of polyether amine wetting dispersant, 1 part of fumed silica, 55 parts of heavy calcium powder and 2 parts of water absorbent; the component B is 300 parts of polyether modified toluene diisocyanate.
In the embodiment, the polyaspartic acid ester is Bayer NH1420, the vinyl defoamer is ZY-357, the polyether amine wetting dispersant is Hensmei FM-300, the water absorbent is Dibaa-30X, and the modified polyether used for polyether modified toluene diisocyanate is polytetramethylene glycol.
Example 3
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are respectively as follows: 50 parts of polyaspartic acid ester, 4 parts of organic silicon defoamer, 3 parts of polyether amine wetting dispersant, 0.1 part of kaolin, 45 parts of calcium carbonate and 3.9 parts of water absorbent; the component B is 200 parts of polyether modified toluene diisocyanate.
In the embodiment, the polyaspartic ester is Bayer NH1420 and Bayer NH1520 (the ratio of the two is 4: 5), the organic silicon defoaming agent is DEFEN DF-853, the polyether amine wetting dispersant is Hensmei FM-300, the water absorbent is Dibaa-30X, and the modified polyether used by the polyether modified toluene diisocyanate is polypropylene glycol.
Example 4
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are as follows: 41 parts of polyaspartic acid ester, 1.5 parts of vinyl defoamer, 1.5 parts of organic silicon defoamer, 2.8 parts of polyether amine wetting dispersant, 0.7 part of fumed silica, 37.5 parts of heavy calcium powder, 11 parts of barium sulfate and 4 parts of silicate water absorbent; the component B is 100 parts of polyether modified toluene diisocyanate.
In the embodiment, the polyaspartic ester is Bayer NH1420, the ethylene defoamer is ZY-357, the organic silicon defoamer LY-A, the polyether amine wetting dispersant is Hensmei L207, and the silicate water absorbent is Sylosiv A3The powder and polyether modified toluene diisocyanate uses modified polyether of polycaprolactone diol.
Example 5
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are as follows: 41 parts of polyaspartic acid ester, 2 parts of vinyl defoamer, 0.5 part of organosilicon defoamer, 2 parts of polyether amine wetting dispersant, 0.5 part of fumed silica, 36 parts of heavy calcium powder, 15 parts of barium sulfate and 3 parts of silicate water absorbent; the component B is 100 parts of polyether modified toluene diisocyanate.
The polyether of polyaspartic acid ester, defoaming agent, wetting dispersant, water absorbent and polyether-modified polyisocyanate described in this example were the same as those of example 4.
Example 6
In the embodiment of the polyaspartic ester polyurea coating, the raw materials and the parts by weight for synthesizing the polyaspartic ester polyurea coating are as follows: 43 parts of polyaspartic acid ester, 0.5 part of vinyl defoamer, 2 parts of organic silicon defoamer, 3 parts of polyether amine wetting dispersant, 0.1 part of fumed silica, 40 parts of heavy calcium powder, 8 parts of barium sulfate and 3.4 parts of silicate water absorbent; the component B is 100 parts of polyether modified toluene diisocyanate.
The polyether of polyaspartic acid ester, defoaming agent, wetting dispersant, water absorbent and polyether-modified polyisocyanate described in this example were the same as those of example 4.
Example 7
The comprehensive performance of the polyaspartic ester polyurea coating of the embodiment 1-6 of the invention is measured, the measurement results are shown in tables 1 and 2, and the reference substance in the tables 1 and 2 is the polyaspartic ester polyurea waterproof coating disclosed in the Chinese invention patent (with the patent number of CN 200710173351.2). The surface dry time and the actual dry time refer to GB/T1728-1989 standard; the tensile strength is in accordance with the GB/T16777-2008 standard (the test temperature is 25 ℃); elongation at break is according to the GB/T16777-2008 standard; the tearing strength is based on the GB/T529-2008 standard; the adhesion is measured by a tension method, which is referred to GB/T5210-2006 standard; the hardness is according to the GB/T2411-1989 standard; the water impermeability is determined in a 0.3mpa environment for 30min, which is referred to the GB/T16777-2008 standard; low temperature bendability is based on HG-T3831-2006 standard.
TABLE 1 Performance determination of polyaspartic ester polyurea coatings
TABLE 2 Performance measurements of polyaspartic ester polyurea coatings
Combining the above measurement results, it can be shown that the polyaspartic ester polyurea coating of the invention is compared with the reference: 1) the curing time is similar, the gel time is about 30 or 20min, and the construction is convenient for technicians; 2) the tensile strength, the tearing strength and the elongation at break are all enhanced, and the flexibility of the polyaspartic ester polyurea coating is better; 3) water is not permeable, and cracks do not appear at low temperature; 4) strong adhesive force and hard hardness. The polyaspartate polyurea coating of example 4 performed more thoroughly and well relative to the other examples.
The polyaspartic acid ester polyurea coating has good flexibility and waterproofness and strong adhesive force; the good characteristics enable the coating of the invention to be better used as a middle coating in a coating system, so that the coating becomes a buffer layer of the coating, the capability of the waterproof material for resisting environmental change in practical application is greatly improved, the service time is prolonged, and the maintenance cost is reduced.
Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.
Claims (9)
1. A polyaspartate polyurea coating is characterized in that: the polyaspartate polyurea coating comprises a component A and a component B; wherein,
the component A comprises polyaspartic acid ester, a defoaming agent, a wetting dispersant, a thixotropic agent, a filler and a water absorbent; the component A comprises the following raw materials in parts by weight: 40-50 parts of polyaspartic acid ester, 1-4 parts of defoaming agent, 1-3 parts of wetting dispersant, 0.1-1 part of thixotropic agent, 44-55 parts of filler and 2-5 parts of water absorbent;
the component B is polyether modified polyisocyanate;
the mass ratio of the component A to the component B is 1: 3-2: 1.
2. The polyaspartate polyurea coating of claim 1, wherein: the defoaming agent is at least one of ethylene defoaming agent and organic silicon defoaming agent, the wetting dispersant is polyether amine wetting dispersant, the thixotropic agent is silicon dioxide, the filler is at least one of heavy calcium powder and barium sulfate, and the water absorbent is silicate water absorbent.
3. The polyaspartate polyurea coating of claim 1, wherein: the modified polyether used by the polyether modified polyisocyanate is at least one of polycarbonate diol, polytetrahydrofuran diol, polypropylene glycol, polyglycerol, polyethylene glycol, polyethylene triol, poly trimethylolpropane, polytetramethylene glycol and polycaprolactone diol.
4. The polyaspartate polyurea coating of claim 3, wherein: the polyether modified polyisocyanate is polyether modified toluene diisocyanate.
5. The polyaspartate polyurea coating of any one of claims 1-4, wherein: the component A and the component B are equal in mass.
6. The polyaspartate polyurea coating of claim 5, wherein: the defoaming agent is a mixture of 0.5-2 parts of vinyl defoaming agent and 0.5-2 parts of organosilicon defoaming agent; the filler is a mixture of 36-40 parts of heavy calcium powder and 8-15 parts of barium sulfate.
7. The polyaspartate polyurea coating of claim 5, wherein: the component A comprises the following raw materials in parts by weight: 41 parts of polyaspartic acid ester, 1.5 parts of vinyl defoamer, 1.5 parts of organic silicon defoamer, 2.8 parts of polyether amine wetting dispersant, 0.7 part of fumed silica, 37.5 parts of heavy calcium powder, 11 parts of barium sulfate and 4 parts of silicate water absorbent; the component B is 100 parts of polyether modified toluene diisocyanate.
8. Use of a polyaspartate polyurea coating according to any of claims 1-7 as a midcoat for a polyaspartate polyurea water repellent corrosion protective coating.
9. A polyaspartate polyurea waterproof anticorrosion coating is characterized in that: comprising the polyaspartate polyurea coating of any one of claims 1-7.
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CN105802460A (en) * | 2016-04-21 | 2016-07-27 | 西北矿冶研究院 | Scrape coating type polyurea elastomer corrosion-resistant wear-resistant material and preparation method thereof |
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CN105802460A (en) * | 2016-04-21 | 2016-07-27 | 西北矿冶研究院 | Scrape coating type polyurea elastomer corrosion-resistant wear-resistant material and preparation method thereof |
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