CN112521848B - High-performance polyurethane water-based waterproof coating - Google Patents
High-performance polyurethane water-based waterproof coating Download PDFInfo
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- CN112521848B CN112521848B CN202011598103.4A CN202011598103A CN112521848B CN 112521848 B CN112521848 B CN 112521848B CN 202011598103 A CN202011598103 A CN 202011598103A CN 112521848 B CN112521848 B CN 112521848B
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- waterproof coating
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D175/00—Coating compositions based on polyureas or polyurethanes; Coating compositions based on derivatives of such polymers
- C09D175/04—Polyurethanes
- C09D175/08—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
- C08G18/10—Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/2805—Compounds having only one group containing active hydrogen
- C08G18/288—Compounds containing at least one heteroatom other than oxygen or nitrogen
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/28—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the compounds used containing active hydrogen
- C08G18/40—High-molecular-weight compounds
- C08G18/48—Polyethers
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/20—Diluents or solvents
-
- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09D—COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR
- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
- C09D7/40—Additives
- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
-
- 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
- C08K2003/2237—Oxides; Hydroxides of metals of titanium
- C08K2003/2241—Titanium dioxide
-
- 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
- C08K2003/2296—Oxides; Hydroxides of metals of zinc
Abstract
The invention discloses a high-performance polyurethane water-based waterproof coating, which relates to the technical field of waterproof coatings, wherein the water-based polyurethane is prepared, the water-based polyurethane is used as the only resin component of the coating, and then a filler, a pigment, an ultraviolet-proof agent and a water-based leveling agent are added to prepare the coating.
Description
The technical field is as follows:
the invention relates to the technical field of waterproof coatings, and particularly relates to a high-performance polyurethane water-based waterproof coating.
Background art:
at present, the solution-type waterproof coating is widely applied to indoor kitchens, toilets, balconies, roofs, basements, outer walls, roof gardens, swimming pools, reservoirs, drinking ponds, roads, bridges, tunnels, culverts and underground spaces of buildings, and buildings such as high-speed railways, highways, subways, urban rails, airports, water canals, reservoirs, dams, hydroelectric power stations, water treatment and the like.
The solution type waterproof coating comprises a solvent type waterproof coating and a water-based waterproof coating, wherein the solvent type waterproof coating contains an organic solvent, so that the solvent type waterproof coating has the problem of volatilization or decomposition in the drying process of the coating, and can pollute the environment and harm the health of human bodies, so people tend to select the water-based waterproof coating in recent years.
As can be seen from the names, the water-based waterproof coating requires that the coating components have good hydrophilicity or are easy to dissolve in water on one hand, and requires that the coating formed by the coating has waterproofness on the other hand, so that the water-based waterproof coating needs to be prepared by selecting proper preparation raw materials and preparation methods.
The invention content is as follows:
the invention aims to solve the technical problem of providing a high-performance polyurethane water-based waterproof coating, which is prepared by firstly preparing water-based polyurethane as film-forming resin and then adding auxiliary materials, and the prepared coating not only belongs to the water-based coating, but also has outstanding waterproof performance.
The technical problem to be solved by the invention is realized by adopting the following technical scheme:
a high-performance polyurethane water-based waterproof coating comprises water-based polyurethane, wherein the water-based polyurethane is prepared from diisocyanate, polyether glycol and N-hydroxysulfonic succinimide, and the preparation method comprises the following steps: heating polyether glycol to 100-110 ℃ for dehydration, cooling to 70-80 ℃, adding diisocyanate and a catalyst under the protection of nitrogen, carrying out heat preservation reaction at 70-80 ℃, adding N-hydroxysulfonic succinimide, carrying out heat preservation reaction at 70-80 ℃, and cooling to obtain the waterborne polyurethane.
The high-performance polyurethane water-based waterproof coating also comprises a filler, a pigment, an ultraviolet-proof agent, a water-based leveling agent and water.
The comprehensive performance of the prepared coating can be improved by adding the auxiliary materials, including the construction effect and the coating using effect.
The mass ratio of the waterborne polyurethane to the filler to the pigment to the ultraviolet-proof agent to the waterborne leveling agent is 20-40:5-20:1-10:0.5-5: 0.5-5.
The filler is at least one of kaolin, talcum powder, calcium carbonate and quartz powder. The addition of the filler can improve the physical properties of the coating and reduce the dosage of the high molecular resin.
The pigment is an organic pigment or an inorganic pigment. Different types of pigments are selected according to requirements, and the coating is endowed with rich appearance colors.
The ultraviolet-proof agent is zinc oxide and/or titanium dioxide. The addition of the ultraviolet-screening agent can enhance the ageing resistance of the coating.
The water-based leveling agent is at least one of BYK-350, BYK-359 and BYK-381. The addition of the leveling agent can promote the coating to form a smooth, flat and uniform coating film in the drying film-forming process.
The solid content of the high-performance polyurethane water-based waterproof coating is 40-60%.
The diisocyanate is one of diphenylmethane diisocyanate, isophorone diisocyanate and 1, 6-hexamethylene diisocyanate.
The polyether diol is one of N-210, N-220 and N-240.
The catalyst is dibutyltin dilaurate.
The mass ratio of the diisocyanate to the polyether diol to the N-hydroxysulfonic succinimide is 20-30:50-100: 4-5.
The preparation principle of the waterborne polyurethane is as follows:
diisocyanate reacts with polyether diol to generate isocyanate group-terminated polyurethane prepolymer, the prepolymer reacts with N-hydroxysulfonic succinimide to generate modified polyurethane, the molecular structure of the modified polyurethane contains sulfonic groups, the sulfonic groups belong to groups with strong polarity, and the succinimide groups have good hydrophilicity, so that the prepared modified polyurethane belongs to waterborne polyurethane, and the N-hydroxysulfonic succinimide is used for terminating the polyurethane to enhance the waterproof performance of the prepared coating.
The synthetic route of the waterborne polyurethane is as follows:
the invention has the beneficial effects that: the waterborne polyurethane is prepared and is used as the only resin component of the coating, and then the filler, the pigment, the ultraviolet-proof agent and the waterborne leveling agent are added to prepare the coating.
The specific implementation mode is as follows:
in order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
Preparation of waterborne polyurethane: firstly heating 80g of polyether glycol N-210 to 110 ℃, dehydrating for 3h, then cooling to 80 ℃, adding 25g of diphenylmethane diisocyanate and 0.5g of dibutyltin dilaurate under the protection of nitrogen, carrying out heat preservation reaction for 3h at 80 ℃, then adding 4g N-hydroxysulfonic acid succinimide, continuing to carry out heat preservation reaction for 1h at 70-80 ℃, and cooling to obtain the waterborne polyurethane.
Preparation of the coating: 35kg of waterborne polyurethane, 12kg of talcum powder, 1kg of pigment red 254, 0.5kg of zinc oxide, 0.5kg of waterborne flatting agent BYK-350 and water are added to prepare the waterborne coating with the solid content of 45%.
Example 2
Preparation of waterborne polyurethane: firstly heating 80g of polyether glycol N-210 to 110 ℃, dehydrating for 3h, then cooling to 80 ℃, adding 22g of isophorone diisocyanate and 0.5g of dibutyltin dilaurate under the protection of nitrogen, carrying out heat preservation reaction for 3h at 80 ℃, then adding 4g N-hydroxysulfonic acid succinimide, continuing to carry out heat preservation reaction for 1h at 70-80 ℃, and cooling to obtain the waterborne polyurethane.
Preparation of the coating: 32kg of waterborne polyurethane, 9kg of quartz powder, 1kg of pigment red 254, 0.5kg of titanium dioxide, 0.5kg of waterborne flatting agent BYK-381 and water are added to prepare the waterborne coating with the solid content of 45%.
Example 3
Preparation of waterborne polyurethane: firstly heating 80g of polyether glycol N-210 to 110 ℃, dehydrating for 3h, then cooling to 80 ℃, adding 25g of diphenylmethane diisocyanate and 0.5g of dibutyltin dilaurate under the protection of nitrogen, carrying out heat preservation reaction for 3h at 80 ℃, then adding 4g N-hydroxysulfonic acid succinimide, continuing to carry out heat preservation reaction for 1h at 70-80 ℃, and cooling to obtain the waterborne polyurethane.
Preparation of the coating: 35kg of waterborne polyurethane, 12kg of kaolin, 1kg of pigment red 254, 0.5kg of zinc oxide, 0.5kg of waterborne flatting agent BYK-350 and water are added to prepare the waterborne coating with the solid content of 45 percent.
Structural characterization of the waterborne polyurethane: 1155cm-1(S＝O)；1240cm-1,1050cm-1(O＝S＝O).
Comparative example 1
Comparative example 1 was obtained by replacing N-hydroxysuccinimide with hydroxyacrylic acid in the preparation of aqueous polyurethane in example 1, and the rest of the preparation steps were completely the same as in example 1.
Comparative example 2
Comparative example 2 was obtained by replacing N-hydroxysulfonic acid succinimide with 3-hydroxypropanesulfonic acid in the preparation of aqueous polyurethane in example 1, and the rest of the preparation steps were completely the same as in example 1.
The coatings prepared in example 1, example 2, example 3, comparative example 1 and comparative example 2 were tested for adhesion strength and water impermeability according to GB/T16777-.
TABLE 1
| Bond Strength B method | Water impermeability | |
| Example 1 | 2.61MPa | Passing through at 0.5MPa/30min |
| Example 2 | 2.32MPa | Passing through at 0.5MPa/30min |
| Example 3 | 2.50MPa | Passing through at 0.5MPa/30min |
| Comparative example 1 | 1.42MPa | 0.3MPa/30min pass, 0.4MPa/30min fail |
| Comparative example 2 | 1.35MPa | 0.3MPa/30min pass, 0.4MPa/30min fail |
The foregoing shows and describes the general principles and broad features of the present invention and advantages thereof. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (10)
1. A high-performance polyurethane water-based waterproof coating is characterized in that: the waterborne polyurethane is prepared from diisocyanate, polyether diol and N-hydroxysulfonic succinimide, and the preparation method comprises the following steps: heating polyether glycol to 100-110 ℃ for dehydration, cooling to 70-80 ℃, adding diisocyanate and a catalyst under the protection of nitrogen, carrying out heat preservation reaction at 70-80 ℃, adding N-hydroxysulfonic succinimide, carrying out heat preservation reaction at 70-80 ℃, and cooling to obtain the waterborne polyurethane.
2. The high-performance polyurethane aqueous waterproof coating material according to claim 1, characterized in that: the high-performance polyurethane water-based waterproof coating also comprises a filler, a pigment, an ultraviolet-proof agent, a water-based leveling agent and water.
3. The high-performance polyurethane aqueous waterproof coating material according to claim 2, characterized in that: the mass ratio of the waterborne polyurethane to the filler to the pigment to the ultraviolet-proof agent to the waterborne leveling agent is 20-40:5-20:1-10:0.5-5: 0.5-5.
4. The high-performance polyurethane aqueous waterproof coating material according to claim 2, characterized in that: the filler is at least one of kaolin, talcum powder, calcium carbonate and quartz powder.
5. The high-performance polyurethane aqueous waterproof coating material according to claim 2, characterized in that: the pigment is an organic pigment or an inorganic pigment.
6. The high-performance polyurethane aqueous waterproof coating material according to claim 2, characterized in that: the ultraviolet-proof agent is zinc oxide and/or titanium dioxide.
7. The high-performance polyurethane aqueous waterproof coating material according to claim 2, characterized in that: the water-based leveling agent is at least one of BYK-350, BYK-359 and BYK-381.
8. The high-performance polyurethane aqueous waterproof coating material according to claim 1, characterized in that: the diisocyanate is one of diphenylmethane diisocyanate, isophorone diisocyanate and 1, 6-hexamethylene diisocyanate.
9. The high-performance polyurethane aqueous waterproof coating material according to claim 1, characterized in that: the polyether diol is one of N-210, N-220 and N-240.
10. The high-performance polyurethane aqueous waterproof coating material according to claim 1, characterized in that: the catalyst is dibutyltin dilaurate.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011598103.4A CN112521848B (en) | 2020-12-29 | 2020-12-29 | High-performance polyurethane water-based waterproof coating |
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| CN202011598103.4A CN112521848B (en) | 2020-12-29 | 2020-12-29 | High-performance polyurethane water-based waterproof coating |
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| CN112521848B true CN112521848B (en) | 2021-12-24 |
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| CN115505324A (en) * | 2021-06-07 | 2022-12-23 | 上海涂固安高科技有限公司 | Formula of waterborne polyurethane high-performance anti-UV finish paint |
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| CN100491484C (en) * | 2004-07-14 | 2009-05-27 | 上海应用技术学院 | Water-proof coating with mono component high elasticity aqueous polyurethane for construction and preparation process thereof |
| CN107384174A (en) * | 2017-09-07 | 2017-11-24 | 深圳市嘉达高科产业发展有限公司 | Container protection topcoat paint and preparation method thereof |
| CN110054941B (en) * | 2018-01-17 | 2023-02-21 | 科思创德国股份有限公司 | Single-component water-based polyurethane coating composition and preparation method thereof |
| CN108485499A (en) * | 2018-04-17 | 2018-09-04 | 邹奇峰 | A kind of aqueous polyurethane building water-proof paint and preparation method thereof |
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