CN115612369B - Modified epoxy resin floor coating and preparation method thereof - Google Patents
Modified epoxy resin floor coating and preparation method thereof Download PDFInfo
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- CN115612369B CN115612369B CN202110228478.XA CN202110228478A CN115612369B CN 115612369 B CN115612369 B CN 115612369B CN 202110228478 A CN202110228478 A CN 202110228478A CN 115612369 B CN115612369 B CN 115612369B
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- 239000003822 epoxy resin Substances 0.000 title claims abstract description 88
- 229920000647 polyepoxide Polymers 0.000 title claims abstract description 88
- 238000000576 coating method Methods 0.000 title claims abstract description 52
- 239000011248 coating agent Substances 0.000 title claims abstract description 48
- 238000002360 preparation method Methods 0.000 title claims abstract description 38
- 229920002396 Polyurea Polymers 0.000 claims abstract description 41
- 239000003795 chemical substances by application Substances 0.000 claims abstract description 41
- 241000234427 Asparagus Species 0.000 claims abstract description 40
- 235000005340 Asparagus officinalis Nutrition 0.000 claims abstract description 40
- 238000006243 chemical reaction Methods 0.000 claims abstract description 33
- 239000002994 raw material Substances 0.000 claims abstract description 26
- 108010064470 polyaspartate Proteins 0.000 claims abstract description 25
- 150000002148 esters Chemical group 0.000 claims abstract description 22
- 229920000805 Polyaspartic acid Polymers 0.000 claims abstract description 20
- 150000001412 amines Chemical class 0.000 claims abstract description 19
- 239000003085 diluting agent Substances 0.000 claims abstract description 13
- 125000003700 epoxy group Chemical group 0.000 claims abstract description 9
- 239000000945 filler Substances 0.000 claims description 46
- 239000000049 pigment Substances 0.000 claims description 46
- 238000003756 stirring Methods 0.000 claims description 26
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 25
- UQSXHKLRYXJYBZ-UHFFFAOYSA-N Iron oxide Chemical compound [Fe]=O UQSXHKLRYXJYBZ-UHFFFAOYSA-N 0.000 claims description 16
- AHDSRXYHVZECER-UHFFFAOYSA-N 2,4,6-tris[(dimethylamino)methyl]phenol Chemical compound CN(C)CC1=CC(CN(C)C)=C(O)C(CN(C)C)=C1 AHDSRXYHVZECER-UHFFFAOYSA-N 0.000 claims description 12
- 238000002156 mixing Methods 0.000 claims description 10
- 239000004593 Epoxy Substances 0.000 claims description 9
- 125000005442 diisocyanate group Chemical group 0.000 claims description 9
- OYPRJOBELJOOCE-UHFFFAOYSA-N Calcium Chemical compound [Ca] OYPRJOBELJOOCE-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 7
- 239000011575 calcium Substances 0.000 claims description 7
- 238000001816 cooling Methods 0.000 claims description 7
- 238000007599 discharging Methods 0.000 claims description 7
- DVKJHBMWWAPEIU-UHFFFAOYSA-N toluene 2,4-diisocyanate Chemical compound CC1=CC=C(N=C=O)C=C1N=C=O DVKJHBMWWAPEIU-UHFFFAOYSA-N 0.000 claims description 7
- PEDCQBHIVMGVHV-UHFFFAOYSA-N Glycerine Chemical compound OCC(O)CO PEDCQBHIVMGVHV-UHFFFAOYSA-N 0.000 claims description 6
- ZMANZCXQSJIPKH-UHFFFAOYSA-N Triethylamine Chemical compound CCN(CC)CC ZMANZCXQSJIPKH-UHFFFAOYSA-N 0.000 claims description 6
- 239000012752 auxiliary agent Substances 0.000 claims description 6
- 238000000227 grinding Methods 0.000 claims description 6
- RRAMGCGOFNQTLD-UHFFFAOYSA-N hexamethylene diisocyanate Chemical compound O=C=NCCCCCCN=C=O RRAMGCGOFNQTLD-UHFFFAOYSA-N 0.000 claims description 6
- 239000000377 silicon dioxide Substances 0.000 claims description 6
- 239000005057 Hexamethylene diisocyanate Substances 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 5
- JUJWROOIHBZHMG-UHFFFAOYSA-N Pyridine Chemical compound C1=CC=NC=C1 JUJWROOIHBZHMG-UHFFFAOYSA-N 0.000 claims description 4
- GWEVSGVZZGPLCZ-UHFFFAOYSA-N Titan oxide Chemical compound O=[Ti]=O GWEVSGVZZGPLCZ-UHFFFAOYSA-N 0.000 claims description 4
- -1 amine compound Chemical class 0.000 claims description 4
- TZCXTZWJZNENPQ-UHFFFAOYSA-L barium sulfate Chemical compound [Ba+2].[O-]S([O-])(=O)=O TZCXTZWJZNENPQ-UHFFFAOYSA-L 0.000 claims description 4
- IISBACLAFKSPIT-UHFFFAOYSA-N bisphenol A Chemical compound C=1C=C(O)C=CC=1C(C)(C)C1=CC=C(O)C=C1 IISBACLAFKSPIT-UHFFFAOYSA-N 0.000 claims description 4
- 150000001875 compounds Chemical class 0.000 claims description 4
- 238000003860 storage Methods 0.000 claims description 4
- 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 3
- NIMLQBUJDJZYEJ-UHFFFAOYSA-N isophorone diisocyanate Chemical compound CC1(C)CC(N=C=O)CC(C)(CN=C=O)C1 NIMLQBUJDJZYEJ-UHFFFAOYSA-N 0.000 claims description 3
- AYLRODJJLADBOB-QMMMGPOBSA-N methyl (2s)-2,6-diisocyanatohexanoate Chemical compound COC(=O)[C@@H](N=C=O)CCCCN=C=O AYLRODJJLADBOB-QMMMGPOBSA-N 0.000 claims description 3
- 239000005995 Aluminium silicate Substances 0.000 claims description 2
- BRLQWZUYTZBJKN-UHFFFAOYSA-N Epichlorohydrin Chemical compound ClCC1CO1 BRLQWZUYTZBJKN-UHFFFAOYSA-N 0.000 claims description 2
- 239000004952 Polyamide Substances 0.000 claims description 2
- GSEJCLTVZPLZKY-UHFFFAOYSA-N Triethanolamine Chemical compound OCCN(CCO)CCO GSEJCLTVZPLZKY-UHFFFAOYSA-N 0.000 claims description 2
- KXBFLNPZHXDQLV-UHFFFAOYSA-N [cyclohexyl(diisocyanato)methyl]cyclohexane Chemical compound C1CCCCC1C(N=C=O)(N=C=O)C1CCCCC1 KXBFLNPZHXDQLV-UHFFFAOYSA-N 0.000 claims description 2
- 235000012211 aluminium silicate Nutrition 0.000 claims description 2
- 239000002518 antifoaming agent Substances 0.000 claims description 2
- 150000004982 aromatic amines Chemical class 0.000 claims description 2
- BRPQOXSCLDDYGP-UHFFFAOYSA-N calcium oxide Chemical compound [O-2].[Ca+2] BRPQOXSCLDDYGP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000292 calcium oxide Substances 0.000 claims description 2
- ODINCKMPIJJUCX-UHFFFAOYSA-N calcium oxide Inorganic materials [Ca]=O ODINCKMPIJJUCX-UHFFFAOYSA-N 0.000 claims description 2
- 239000006229 carbon black Substances 0.000 claims description 2
- 239000004568 cement Substances 0.000 claims description 2
- 239000007822 coupling agent Substances 0.000 claims description 2
- ZBCBWPMODOFKDW-UHFFFAOYSA-N diethanolamine Chemical compound OCCNCCO ZBCBWPMODOFKDW-UHFFFAOYSA-N 0.000 claims 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 claims description 2
- RTZKZFJDLAIYFH-UHFFFAOYSA-N ether Substances CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 claims description 2
- LNEPOXFFQSENCJ-UHFFFAOYSA-N haloperidol Chemical compound C1CC(O)(C=2C=CC(Cl)=CC=2)CCN1CCCC(=O)C1=CC=C(F)C=C1 LNEPOXFFQSENCJ-UHFFFAOYSA-N 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims description 2
- 239000012948 isocyanate Substances 0.000 claims description 2
- 150000002513 isocyanates Chemical class 0.000 claims 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 claims description 2
- 239000000395 magnesium oxide Substances 0.000 claims description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 claims description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 claims description 2
- 229920002647 polyamide Polymers 0.000 claims description 2
- UMJSCPRVCHMLSP-UHFFFAOYSA-N pyridine Natural products COC1=CC=CN=C1 UMJSCPRVCHMLSP-UHFFFAOYSA-N 0.000 claims description 2
- 239000000376 reactant Substances 0.000 claims description 2
- 239000013008 thixotropic agent Substances 0.000 claims description 2
- 239000004408 titanium dioxide Substances 0.000 claims description 2
- 239000010456 wollastonite Substances 0.000 claims description 2
- 229910052882 wollastonite Inorganic materials 0.000 claims description 2
- 239000005058 Isophorone diisocyanate Substances 0.000 claims 1
- 150000003335 secondary amines Chemical group 0.000 claims 1
- 239000003973 paint Substances 0.000 abstract description 16
- 125000000467 secondary amino group Chemical group [H]N([*:1])[*:2] 0.000 abstract description 7
- 239000013530 defoamer Substances 0.000 description 20
- LRHPLDYGYMQRHN-UHFFFAOYSA-N N-Butanol Chemical compound CCCCO LRHPLDYGYMQRHN-UHFFFAOYSA-N 0.000 description 16
- 239000000843 powder Substances 0.000 description 13
- 239000002904 solvent Substances 0.000 description 12
- CTQNGGLPUBDAKN-UHFFFAOYSA-N O-Xylene Chemical compound CC1=CC=CC=C1C CTQNGGLPUBDAKN-UHFFFAOYSA-N 0.000 description 11
- 238000010276 construction Methods 0.000 description 10
- 239000000203 mixture Substances 0.000 description 8
- 239000010453 quartz Substances 0.000 description 8
- VTYYLEPIZMXCLO-UHFFFAOYSA-L Calcium carbonate Chemical compound [Ca+2].[O-]C([O-])=O VTYYLEPIZMXCLO-UHFFFAOYSA-L 0.000 description 6
- UCNNJGDEJXIUCC-UHFFFAOYSA-L hydroxy(oxo)iron;iron Chemical compound [Fe].O[Fe]=O.O[Fe]=O UCNNJGDEJXIUCC-UHFFFAOYSA-L 0.000 description 6
- 229920002635 polyurethane Polymers 0.000 description 6
- 239000004814 polyurethane Substances 0.000 description 6
- 238000009775 high-speed stirring Methods 0.000 description 5
- 239000004576 sand Substances 0.000 description 5
- 239000008096 xylene Substances 0.000 description 5
- 239000000440 bentonite Substances 0.000 description 4
- 229910000278 bentonite Inorganic materials 0.000 description 4
- SVPXDRXYRYOSEX-UHFFFAOYSA-N bentoquatam Chemical compound O.O=[Si]=O.O=[Al]O[Al]=O SVPXDRXYRYOSEX-UHFFFAOYSA-N 0.000 description 4
- 238000007385 chemical modification Methods 0.000 description 4
- 238000007711 solidification Methods 0.000 description 4
- 230000008023 solidification Effects 0.000 description 4
- 229910000019 calcium carbonate Inorganic materials 0.000 description 3
- 229920001971 elastomer Polymers 0.000 description 2
- MOUPNEIJQCETIW-UHFFFAOYSA-N lead chromate Chemical compound [Pb+2].[O-][Cr]([O-])(=O)=O MOUPNEIJQCETIW-UHFFFAOYSA-N 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000004806 packaging method and process Methods 0.000 description 2
- 239000002245 particle Substances 0.000 description 2
- 238000011056 performance test Methods 0.000 description 2
- 239000001038 titanium pigment Substances 0.000 description 2
- 206010059866 Drug resistance Diseases 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000002253 acid Substances 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 125000003368 amide group Chemical group 0.000 description 1
- 125000003277 amino group Chemical group 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000004132 cross linking Methods 0.000 description 1
- 239000000428 dust Substances 0.000 description 1
- 239000000806 elastomer Substances 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 229920002521 macromolecule Polymers 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002715 modification method Methods 0.000 description 1
- 230000002265 prevention Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920005992 thermoplastic resin Polymers 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 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
- C09D163/00—Coating compositions based on epoxy resins; Coating compositions based on derivatives of epoxy resins
-
- 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
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2272—Ferric oxide (Fe2O3)
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08K—Use of inorganic or non-macromolecular organic substances as compounding ingredients
- C08K3/00—Use of inorganic substances as compounding ingredients
- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
- C08K3/20—Oxides; Hydroxides
- C08K3/22—Oxides; Hydroxides of metals
- C08K2003/2265—Oxides; Hydroxides of metals of iron
- C08K2003/2275—Ferroso-ferric oxide (Fe3O4)
-
- 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
- C08L2205/02—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group
- C08L2205/025—Polymer mixtures characterised by other features containing two or more polymers of the same C08L -group containing two or more polymers of the same hierarchy C08L, and differing only in parameters such as density, comonomer content, molecular weight, structure
-
- 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
Landscapes
- 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)
Abstract
The invention belongs to the technical field of coatings, and relates to a modified epoxy resin floor coating and a preparation method thereof. The floor coating comprises a component A and a component B, wherein the raw materials for preparing the component A comprise 75-95 parts of epoxy resin and 1-30 parts of reactive diluent according to the weight ratio; the raw materials for preparing the component B comprise 5-40 parts of amine curing agent and 2-30 parts of asparagus polyurea prepolymer according to the weight ratio. The modified epoxy resin terrace paint and the preparation method thereof can utilize the chemical reaction of the epoxy groups in the epoxy resin and the secondary amine groups in the asparagus polyurea prepolymer, introduce polyaspartic acid ester chain segments into the epoxy resin molecules simply and with strong operability, and obviously improve the toughness, elongation at break, impact resistance and fatigue resistance of the epoxy resin terrace paint on the basis of keeping the high strength of the epoxy resin terrace paint, so that the modified epoxy resin terrace paint is suitable for various industrial terrace occasions with high mechanical strength requirements.
Description
Technical Field
The invention belongs to the technical field of coatings, and relates to a modified epoxy resin floor coating and a preparation method thereof.
Background
The epoxy resin floor coating is a high-strength, wear-resistant and attractive floor coating, and is widely applied due to the advantages of no seam, firm texture, good drug resistance, corrosion resistance, dust prevention, convenient maintenance, low maintenance cost and the like. The high-strength high-toughness epoxy terrace material can effectively reduce the surface damage of the epoxy terrace when being impacted, reduce the abrasion when a heavy object moves, improve the bearing capacity of large-quality transportation machinery and equipment, and is suitable for industrial terrace occasions with high requirements on various mechanical strength.
Common epoxy resin toughening modification methods comprise chemical modification and physical modification, wherein the physical modification is to blend rubber elastomer or thermoplastic resin with good heat resistance as a second component with epoxy resin; chemical modification is by changing the chemical structure of the crosslinked network, such as adding "flexible segments" to the crosslinked network to increase the mobility of the network chain molecules, or to increase the crosslinking point spacing.
Polyurethane modified epoxy resin is a chemical modification method, not only flexible chain segments can be introduced into the epoxy resin, but also polyurethane contains active amide groups, and has good compatibility with the epoxy resin, which are all favorable factors of the polyurethane modified epoxy resin. However, the introduction of the polyurethane flexible chain segment also obviously reduces the strength and heat resistance of the epoxy resin, so that the polyurethane modified epoxy resin is difficult to meet the performance requirements for a high-strength and high-toughness epoxy resin floor coating system.
The polyaspartic acid ester (structural formula is shown as the formula I below) is a macromolecular compound with secondary amino groups, the steric hindrance is large, and the high-density ester bonds on the branched chains also provide strong polar groups for macromolecular chains. The polyaspartic acid ester has small molecular weight and low viscosity, and the cured polyaspartic acid ester polyurea (abbreviated as asparagus polyurea) has large cohesion, high strength, good toughness, high hardness, good adhesion to a basal plane, good weather resistance and good acid and alkali resistance. Thus, compared to polyurethanes, asparaguses have more outstanding mechanical properties. The polyaspartic acid ester polyurea (asparagus) reaction principle is shown in the following formula II.
Disclosure of Invention
The primary purpose of the invention is to provide a modified epoxy resin terrace paint, which can obviously improve the toughness, elongation at break, impact resistance and fatigue resistance of the epoxy resin terrace paint on the basis of maintaining the high strength of the epoxy resin terrace paint by introducing a plurality of repeated polyaspartic acid ester chain segments into an epoxy resin network structure through chemical modification, so that the modified epoxy resin terrace paint is suitable for various industrial terrace occasions with high mechanical strength requirements.
To achieve this object, in a basic embodiment, the present invention provides a modified epoxy floor coating comprising a component a and a component B,
the raw materials for preparing the component A comprise 75-95 parts of epoxy resin and 1-30 parts of reactive diluent according to the weight ratio;
the raw materials for preparing the component B comprise 5-40 parts of amine curing agent and 2-30 parts of asparagus polyurea prepolymer according to the weight ratio.
In a preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the epoxy resin is a compound containing two or more epoxy groups in the molecule, and is selected from one or more of bisphenol A type epoxy resins E-44, E-51 and E-20.
In a preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the reactive diluent is a low molecular epoxy compound containing epoxy groups and is selected from one or more of propylene oxide propylene ether, butyl glycidyl ether, glycerol epoxy resin and epichlorohydrin.
In a preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the amine curing agent is an organic amine compound and is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
In a preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the raw materials for preparing the asparagus polyurea prepolymer comprise 2-10 parts of diisocyanate and 90-98 parts of polyaspartic acid ester in parts by weight;
the ratio R of the mole number of the polyaspartate to the diisocyanate in the asparagus polyurea prepolymer is 2.1-3, the excessive polyaspartate and the-NCO groups are all reacted, the obtained asparagus polyurea prepolymer has no-NCO groups, and the asparagus polyurea prepolymer is not reacted with moisture and has good storage stability.
In a preferred embodiment, the present invention provides a modified epoxy floor coating wherein:
the diisocyanate is selected from one or more of Toluene Diisocyanate (TDI), isophorone diisocyanate (IPDI), diphenylmethane diisocyanate (MDI), dicyclohexylmethane diisocyanate (HMDI), hexamethylene Diisocyanate (HDI) and Lysine Diisocyanate (LDI);
the polyaspartic acid ester is a reactant of secondary amine groups and isocyanate and is one or more of F-420, F-520, NH-1420 and NH-1520.
In a more preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the preparation method of the asparagus polyurea prepolymer comprises the following steps:
(1) Adding polyaspartic acid ester into a reaction kettle, stirring and heating to 100-130 ℃, and dehydrating for 1-4 hours under vacuum condition;
(2) The temperature is reduced to below 50 ℃, stirring (300-1000 r/mm) is started, diisocyanate is slowly added for reaction for 0.5-2 hours, then the temperature is increased to 60-90 ℃, and the reaction is continued for 2-3 hours;
(3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In a preferred embodiment, the invention provides a modified epoxy resin floor coating, wherein the raw materials for preparing the component A also comprise 0-300 parts of pigment and filler and 0-5 parts of high-performance auxiliary agent according to the weight ratio;
the raw materials for preparing the component B also comprise 0-2 parts of accelerator, 0-150 parts of pigment and filler and 0-5 parts of high-performance auxiliary agent according to the weight ratio.
In a preferred embodiment, the present invention provides a modified epoxy floor coating wherein:
the pigment and filler is one or more selected from titanium dioxide, iron oxide yellow, iron oxide red, carbon black, kaolin, cement, heavy calcium, barium sulfate, magnesium oxide, calcium oxide, wollastonite, silica micropowder and talcum powder;
the high-performance auxiliary agent is one or more of a defoaming agent, a leveling agent, an anti-settling agent, a thixotropic agent and a coupling agent;
the accelerator is amine accelerator selected from one or more of DMP-30, triethylamine, triethanolamine and pyridine.
The second object of the invention is to provide a preparation method of the modified epoxy resin floor coating, which can utilize the chemical reaction of the epoxy groups in the epoxy resin and the secondary amine groups in the asparagus polyurea prepolymer, simply introduce polyaspartic acid ester chain segments into epoxy resin molecules with strong operability, and obviously improve the toughness, elongation at break, impact resistance and fatigue resistance of the epoxy resin floor coating on the basis of maintaining the high strength of the epoxy resin floor coating, so that the modified epoxy resin floor coating is suitable for various industrial floor occasions with high mechanical strength requirements.
To achieve the object, in a basic embodiment, the present invention provides a method for preparing the modified epoxy resin floor coating as described above, the method comprising the steps of:
(1) And (3) preparing a component A: sequentially adding the raw materials into a stirring kettle according to a proportion, mixing for 1-3h, and stirring or grinding to the corresponding granularity according to the granularity requirement to obtain a component A;
(2) And (2) preparing a component B: sequentially adding the raw materials into a stirring kettle according to a proportion, mixing for 1-3h, and stirring or grinding to the corresponding granularity according to the granularity requirement to obtain a component B;
(3) Mixing the component A and the component B according to a certain proportion, and solidifying at normal temperature.
The modified epoxy resin floor coating and the preparation method thereof have the beneficial effects that the modified epoxy resin floor coating and the preparation method thereof can utilize the chemical reaction of the epoxy groups in the epoxy resin and the secondary amine groups in the asparagus polyurea prepolymer, introduce the polyaspartic acid ester chain segments into the epoxy resin molecules simply and with strong operability, and obviously improve the toughness, the elongation at break, the impact resistance and the fatigue resistance of the epoxy resin floor coating on the basis of keeping the high strength of the epoxy resin floor coating, so that the modified epoxy resin floor coating is suitable for various industrial floor occasions with high mechanical strength requirements.
In the preparation of the modified epoxy resin floor coating, an asparagus polyurea prepolymer is designed by a special formula and process, the amine group is excessive, no-NCO group exists in the prepolymer, the storage is stable, the secondary amine group in the prepolymer reacts with the epoxy group in the epoxy resin, and a plurality of repeated polyaspartic acid ester chain segments are introduced into the epoxy resin molecule. The toughness, elongation at break, impact resistance and fatigue resistance of the floor coating are improved on the basis of maintaining the high strength of the epoxy resin floor coating. The preparation method provided by the invention is simple and has strong operability, and the prepared floor coating is suitable for various industrial floor occasions with high mechanical strength requirements.
Detailed Description
The following describes the invention in more detail with reference to examples. Reagents and equipment in the examples are commercially available.
Example 1: preparation of modified epoxy resin terrace paint
The embodiment provides an asparagus polyurea modified epoxy resin self-leveling floor coating, and the raw material formula for preparing the component A comprises the following components: 60kg of epoxy resin (E-20), 20kg of epoxy resin (E-44), 1kg of reactive diluent (501), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 20kg of solvent (n-butanol and xylene in a mass ratio of 1:1), 100kg of pigment and filler (80-mesh quartz powder) and 2kg of pigment and filler (iron oxide yellow); the raw material formula for preparing the component B comprises the following components: 20kg of amine curing agent (9201), 30kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333), 10kg of solvent (n-butanol and xylene in a mass ratio of 1:1), 1kg of pigment filler (iron black) and 50kg of pigment filler (80-mesh quartz powder).
The preparation method comprises the following specific steps:
and (3) preparation of the component A:
60kg of epoxy resin (E-20), 20kg of epoxy resin (E-44), 1kg of reactive diluent (501), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 20kg of solvent (n-butanol and xylene in a mass ratio of 1:1), 100kg of pigment filler (80-mesh quartz powder) and 2kg of pigment filler (iron oxide yellow) are sequentially added into a stirred tank to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to obtain the component A, and the component A is packaged for standby.
And (3) preparation of a component B:
20kg of amine curing agent (9201), 30kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333), 10kg of solvent (n-butanol and xylene in a mass ratio of 1:1), 1kg of pigment filler (iron black) and 50kg of pigment filler (80-mesh quartz powder) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to prepare a component B, and the component B is packaged for later use.
Wherein, preparation of asparagus polyurea prepolymer:
1) 92kg of polyaspartic acid ester is added into a reaction kettle, stirred and heated to 130 ℃, and dehydrated for 1 hour under vacuum condition;
2) The temperature is reduced to below 50 ℃, high-speed stirring is started (the stirring rotating speed is 300 r/min), 8kg of isophorone diisocyanate (IPDI) is slowly added for reaction for 1 hour, then the temperature is increased to 90 ℃, and the reaction is continued for 2 hours;
3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In construction, A, B components were mixed according to 3:1, uniformly mixing the components according to the mass ratio, and performing construction and solidification at normal temperature.
Example 2: preparation of modified epoxy resin terrace paint (II)
The embodiment provides an asparagus polyurea modified epoxy resin floor coating (top coating), and the raw material formula for preparing the component A comprises the following components: 90kg of epoxy resin (E-44), 10kg of reactive diluent (711), 2.5kg of defoamer (BYK-065), 2.5kg of leveling agent (BYK-333), 10kg of solvent (dimethylbenzene), 0.5kg of wax powder (C1008), 1kg of bentonite (828), 10kg of pigment filler (titanium pigment), 200kg of pigment filler (800-mesh silica powder) and 60kg of pigment filler (1200-mesh heavy calcium carbonate); the raw material formula for preparing the component B comprises the following components: 40kg of amine curing agent (650), 10kg of asparagus polyurea prepolymer, 1kg of accelerator (DMP-30), 1kg of defoamer (BYK-065), 1kg of leveling agent (BYK-333), 10kg of solvent (dimethylbenzene), 1kg of bentonite (828), 1kg of pigment filler (iron black), 100kg of pigment filler (800-mesh silica micropowder) and 30kg of pigment filler (1200-mesh heavy calcium carbonate).
The preparation method comprises the following specific steps:
and (3) preparation of the component A:
90kg of epoxy resin (E-44), 10kg of reactive diluent (711), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 10kg of solvent (xylene), 0.5kg of wax powder (C1008), 1kg of bentonite (828), 10kg of pigment filler (titanium pigment), 200kg of pigment filler (800 mesh silica powder) and 60kg of pigment filler (1200 mesh heavy calcium) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the component A can be prepared after grinding to the corresponding granularity according to the granularity requirement, and packaging is carried out for standby.
And (3) preparation of a component B:
40kg of amine curing agent (650), 10kg of asparagus polyurea prepolymer, 1kg of accelerator (DMP-30), 1kg of defoamer (BYK-065), 1kg of flatting agent (BYK-333), 10kg of solvent (dimethylbenzene), 1kg of bentonite (828), 1kg of pigment filler (iron black), 100kg of pigment filler (800 mesh silica powder) and 30kg of pigment filler (1200 mesh heavy calcium) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to prepare a component B and is packaged for standby.
Wherein, preparation of asparagus polyurea prepolymer:
1) 92kg of polyaspartic acid ester is added into a reaction kettle, stirred and heated to 130 ℃, and dehydrated for 1 hour under vacuum condition;
2) The temperature is reduced to below 50 ℃, high-speed stirring (stirring rotation speed is 500 r/min) is started, 8kg of Hexamethylene Diisocyanate (HDI) is slowly added for reaction for 1 hour, then the temperature is increased to 90 ℃, and the reaction is continued for 2 hours;
3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In construction, A, B components were combined in a 2:1, uniformly mixing the components according to the mass ratio, and performing construction and solidification at normal temperature.
Example 3: preparation of modified epoxy resin terrace paint (III)
The embodiment provides an asparagus polyurea modified epoxy solvent-free self-leveling floor coating, which comprises the following raw material formulas for preparing a component A: 80kg of epoxy resin (E-51), 20kg of reactive diluent (501), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 300kg of pigment filler (200 quartz powder) and 2kg of pigment filler (Tiazland); the raw material formula for preparing the component B comprises the following components: 30kg of amine curing agent (9201), 20kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333), 2kg of pigment filler (chrome yellow) and 150kg of pigment filler (200 quartz powder).
The preparation method comprises the following specific steps:
and (3) preparation of the component A:
80kg of epoxy resin (E-51), 20kg of reactive diluent (501), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 300kg of pigment filler (200 quartz powder) and 2kg of pigment filler (titanium blue) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the component A is prepared after grinding to the corresponding granularity according to the granularity requirement and packaging for standby.
And (3) preparation of a component B:
30kg of amine curing agent (9201), 20kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333), 2kg of pigment filler (chrome yellow) and 150kg of pigment filler (200 quartz powder) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding particle size according to the particle size requirement to obtain a component B, and the component B is packaged for standby.
Wherein, preparation of asparagus polyurea prepolymer:
1) 94.8kg of polyaspartic acid ester (F-420) is added into a reaction kettle, stirred and heated to 100 ℃, and dehydrated for 4 hours under vacuum condition;
2) The temperature is reduced to below 50 ℃, high-speed stirring is started (the stirring rotating speed is 1000 r/min), 5kg of Toluene Diisocyanate (TDI) is slowly added for reaction for 1 hour, then the temperature is increased to 70 ℃, and the reaction is continued for 3 hours;
3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In construction, A, B components were combined in a 2:1, uniformly mixing the components according to the mass ratio, and performing construction and solidification at normal temperature.
Example 4: preparation of modified epoxy resin terrace paint (IV)
The embodiment provides an asparagus polyurea modified epoxy solvent-free self-leveling floor color sand coating, and the raw material formula for preparing the component A comprises the following steps: 80kg of epoxy resin (E-51), reactive diluent (501)
20kg, 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333) and 200kg of pigment and filler (20-mesh color sand); the raw material formula for preparing the component B comprises the following components: 30kg of amine curing agent (593), 20kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333) and 100kg of pigment and filler (20-mesh color sand).
The preparation method comprises the following specific steps:
and (3) preparation of the component A:
80kg of epoxy resin (E-51), 20kg of reactive diluent (501), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333) and 200kg of pigment and filler (200-mesh color sand) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to prepare the component A, and the component A is packaged for standby.
And (3) preparation of a component B:
30kg of amine curing agent (593), 20kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333) and 100kg of pigment filler (200 mesh color sand) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to prepare a component B, and the component B is packaged for standby.
Wherein, preparation of asparagus polyurea prepolymer:
1) 94.8kg of polyaspartic acid ester (F-420) is added into a reaction kettle, stirred and heated to 100 ℃, and dehydrated for 4 hours under vacuum condition;
2) The temperature is reduced to below 50 ℃, high-speed stirring is started (the stirring rotating speed is 800 r/min), 5kg of Toluene Diisocyanate (TDI) is slowly added for reaction for 1 hour, then the temperature is increased to 70 ℃, and the reaction is continued for 2 hours;
3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In construction, A, B components were combined in a 2:1, uniformly mixing the components according to the mass ratio, and performing construction and solidification at normal temperature.
Example 5: preparation of modified epoxy resin terrace paint (V)
The embodiment provides an asparagus polyurea modified epoxy resin floor coating, and the raw material formula for preparing the component A comprises the following components: 60kg of epoxy resin (E-51), 40kg of epoxy resin (E-44), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 5kg of solvent (n-butanol), 150kg of pigment filler (800-mesh heavy calcium) and 2kg of pigment filler (iron oxide yellow); the raw material formula for preparing the component B comprises the following components: 20kg of amine curing agent (9201), 25kg of amine curing agent (T31), 5kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of leveling agent (BYK-333), 10kg of solvent (n-butanol), 1kg of pigment filler (iron black) and 75kg of pigment filler (800-mesh heavy calcium carbonate).
The preparation method comprises the following specific steps:
and (3) preparation of the component A:
60kg of epoxy resin (E-51), 40kg of epoxy resin (E-44), 2.5kg of defoamer (BYK-065), 2.5kg of flatting agent (BYK-333), 5kg of solvent (n-butanol), 150kg of pigment filler (800-mesh heavy calcium), 2kg of pigment filler (iron oxide yellow) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to prepare the component A, and the component A is packaged for standby.
And (3) preparation of a component B:
20kg of amine curing agent (9201), 25kg of amine curing agent (T31), 5kg of asparagus polyurea prepolymer, 2kg of accelerator (DMP-30), 2kg of defoamer (BYK-065), 2kg of flatting agent (BYK-333), 10kg of solvent (n-butanol), 1kg of pigment filler (iron black) and 75kg of pigment filler (800-mesh heavy calcium) are sequentially added into a stirring kettle to be mixed for 3 hours, and then the mixture is ground to the corresponding granularity according to the granularity requirement to obtain a component B, and the component B is packaged for later use.
Wherein, preparation of asparagus polyurea prepolymer:
1) 90kg of polyaspartic acid ester is added into a reaction kettle, stirred and heated to 130 ℃, and dehydrated for 1 hour under vacuum condition;
2) The temperature is reduced to below 50 ℃, high-speed stirring is started (the stirring rotating speed is 800 r/min), 10kg of diisocyanate (MDI-50) is slowly added for reaction for 1 hour, then the temperature is increased to 60 ℃, and the reaction is continued for 2 hours;
3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
In construction, A, B components were combined in a 2:1, and is evenly mixed in mass ratio, and is cured in normal temperature construction
Example 6: performance test of modified epoxy resin floor coating prepared in examples 1 to 5
The properties of the modified epoxy resin floor coatings prepared in examples 1 to 5 were tested according to JC/T1015, and the results are shown in Table 1 below.
Table 1 results of performance tests of modified epoxy resin floor coatings prepared in examples 1 to 5
Examples 1-5 by utilizing the reaction of epoxy groups in an epoxy resin with secondary amine groups of an asparaguse polyurea prepolymer, introducing multiple repeated polyaspartate chain segments into the epoxy resin molecule, and the prepolymer has no-NCO groups and is stable in storage, the obtained modified epoxy resin terrace paint improves the toughness, elongation at break, impact resistance and fatigue resistance of the paint on the basis of maintaining the high strength of the epoxy resin terrace paint. The preparation method is simple, the operability is strong, and the prepared floor coating is suitable for various industrial floor occasions with high mechanical strength requirements.
The above-described embodiments are merely illustrative of the present invention, which may be embodied in other specific forms or with other specific forms without departing from the spirit or essential characteristics thereof. The described embodiments are, therefore, to be considered in all respects as illustrative and not restrictive. The scope of the invention should be indicated by the appended claims, and any changes that are equivalent to the intent and scope of the claims are intended to be encompassed within the scope of the invention.
Claims (8)
1. A modified epoxy resin floor coating is characterized in that: the floor coating comprises a component A and a component B,
the raw materials for preparing the component A comprise 75-95 parts of epoxy resin and 1-30 parts of reactive diluent according to the weight ratio;
the raw materials for preparing the component B comprise 5-40 parts of amine curing agent and 2-30 parts of asparagus polyurea prepolymer according to the weight ratio;
the raw materials for preparing the asparagus polyurea prepolymer comprise 2-10 parts of diisocyanate and 90-98 parts of polyaspartic acid ester according to the weight ratio;
the ratio R of the mole number of the polyaspartate to the diisocyanate in the asparagus polyurea prepolymer is 2.1-3, the excessive polyaspartate and the-NCO groups are reacted completely, the obtained asparagus polyurea prepolymer has no-NCO groups, and the asparagus polyurea prepolymer is not reacted with moisture and has good storage stability;
the preparation method of the asparagus polyurea prepolymer comprises the following steps:
(1) Adding polyaspartic acid ester into a reaction kettle, stirring and heating to 100-130 ℃, and dehydrating for 1-4 hours under vacuum condition;
(2) The temperature is reduced to below 50 ℃, stirring is started, diisocyanate is slowly added for reaction for 0.5-2 hours, then the temperature is increased to 60-90 ℃, and the reaction is continued for 2-3 hours;
(3) And after the reaction is finished, cooling to below 50 ℃ and discharging for standby.
2. The floor coating of claim 1, wherein: the epoxy resin is a compound containing two or more epoxy groups in the molecule and is selected from one or more of bisphenol A type epoxy resins E-44, E-51 and E-20.
3. The floor coating of claim 1, wherein: the reactive diluent is a low molecular epoxy compound containing epoxy groups and is selected from one or more of propylene oxide propylene ether, butyl glycidyl ether, glycerol epoxy resin and epichlorohydrin.
4. The floor coating of claim 1, wherein: the amine curing agent is an organic amine compound and is one or more of aliphatic amine, alicyclic amine, aromatic amine and polyamide.
5. The floor coating of claim 4, wherein:
the diisocyanate is selected from one or more of toluene diisocyanate, isophorone diisocyanate, diphenylmethane diisocyanate, dicyclohexylmethane diisocyanate, hexamethylene diisocyanate and lysine diisocyanate;
the polyaspartic acid ester is a reactant of secondary amine groups and isocyanate and is one or more of F-420, F-520, NH-1420 and NH-1520.
6. Floor coating according to one of claims 1 to 5, characterized in that:
the raw materials for preparing the component A also comprise 0-300 parts of pigment and filler and 0-5 parts of high-performance auxiliary agent according to the weight ratio;
the raw materials for preparing the component B also comprise 0-2 parts of accelerator, 0-150 parts of pigment and filler and 0-5 parts of high-performance auxiliary agent according to the weight ratio.
7. The floor coating of claim 6, wherein:
the pigment and filler is one or more selected from titanium dioxide, iron oxide yellow, iron oxide red, carbon black, kaolin, cement, heavy calcium, barium sulfate, magnesium oxide, calcium oxide, wollastonite, silica micropowder and talcum powder;
the high-performance auxiliary agent is one or more of a defoaming agent, a leveling agent, an anti-settling agent, a thixotropic agent and a coupling agent;
the accelerator is amine accelerator selected from one or more of DMP-30, triethylamine, triethanolamine and pyridine.
8. A method of preparing a floor coating according to any one of claims 1 to 7, comprising the steps of:
(1) And (3) preparing a component A: sequentially adding the raw materials into a stirring kettle according to a proportion, mixing for 1-3h, and stirring or grinding to the corresponding granularity according to the granularity requirement to obtain a component A;
(2) And (2) preparing a component B: sequentially adding the raw materials into a stirring kettle according to a proportion, mixing for 1-3h, and stirring or grinding to the corresponding granularity according to the granularity requirement to obtain a component B; (3) Mixing the component A and the component B according to a certain proportion, and solidifying at normal temperature.
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