CN111073497A - Waterborne acrylic polyurethane finish paint capable of obviously improving explosion limit - Google Patents
Waterborne acrylic polyurethane finish paint capable of obviously improving explosion limit Download PDFInfo
- Publication number
- CN111073497A CN111073497A CN201911423309.0A CN201911423309A CN111073497A CN 111073497 A CN111073497 A CN 111073497A CN 201911423309 A CN201911423309 A CN 201911423309A CN 111073497 A CN111073497 A CN 111073497A
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- acrylic polyurethane
- finish paint
- agent
- limit
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Classifications
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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
- C09D175/14—Polyurethanes having carbon-to-carbon unsaturated bonds
-
- C—CHEMISTRY; METALLURGY
- C08—ORGANIC MACROMOLECULAR COMPOUNDS; THEIR PREPARATION OR CHEMICAL WORKING-UP; COMPOSITIONS BASED THEREON
- C08G—MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08G18/00—Polymeric products of isocyanates or isothiocyanates
- C08G18/06—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen
- C08G18/70—Polymeric products of isocyanates or isothiocyanates with compounds having active hydrogen characterised by the isocyanates or isothiocyanates used
- C08G18/72—Polyisocyanates or polyisothiocyanates
- C08G18/73—Polyisocyanates or polyisothiocyanates acyclic
-
- 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
Abstract
The invention discloses a waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit. The anti-explosion performance of the engine finish paint is improved on the basis of the original performance of the engine finish paint by adopting the hydroxypropyl dispersion with high hydroxyl content and the low-activity curing agent through formula optimization, and the explosion limit of a coating film is improved to 100 mu m.
Description
Technical Field
The invention relates to the technical field of water-based paint, in particular to water-based acrylic polyurethane finish paint capable of obviously improving the explosion limit, which is used for various finish paints with high decoration requirements.
Background
The basic resistance and weather resistance of the currently used oil paint and water paint of the engine finish are excellent, but because of the side reaction of the water curing agent and water, NCO groups contained in the curing agent and water generate side reaction to generate carbon dioxide, the film thickness reaches a certain degree, and the gas generated inside the engine finish after the surface is dried can push out a coating film for a plurality of miliaria.
At present, the water paint is controlled by national standard VOC, most of solvents in the system are water, so that the side reaction of the paint can not be completely avoided, and the coating film in the prior art is easy to cause explosion once the thickness of the coating film exceeds 60 mu m.
Disclosure of Invention
The invention provides the water-based acrylic polyurethane finish paint for obviously improving the explosion limit aiming at the defects. The invention aims to solve the technical problem that in the prior art, the anti-explosion performance of the engine finish paint is improved on the basis of the original performance of the engine finish paint by optimizing the formula, and the explosion limit of the coating is improved to 100 mu m.
The technical scheme of the water-based acrylic polyurethane finish paint capable of obviously improving the explosion limit is that a hydroxypropyl dispersion with hydroxyl content is matched with a curing agent. The hydroxy content of the adopted hydroxypropyl dispersoid is 4.5-5.0 percent.
The waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit comprises A, B components; the component A comprises an aqueous hydroxypropyl dispersion, deionized water, a high-boiling-point solvent, a dispersing agent, a defoaming agent, a thixotropic agent, a pigment filler, a base material wetting agent and a thickening agent; the component B consists of a curing agent and a cosolvent.
The weight ratio of the component A to the component B is 5: 1.
the component A comprises the following raw materials in parts by weight:
65-70 parts of aqueous hydroxypropyl dispersion,
7-10 parts of deionized water,
4-7 parts of a high-boiling-point solvent,
0.5 to 1.5 portions of dispersant,
0.1 to 0.3 portion of defoaming agent,
0.5 to 1 portion of thixotropic agent,
10-15 parts of a pigment filler,
0.3 to 0.5 portion of base material wetting agent,
0.3 to 0.5 portion of thickening agent;
the component B comprises 88-90 parts by weight of curing agent and 10-12 parts by weight of cosolvent.
The curing agent is Bayer 3900. The cosolvent is PGDA.
The high boiling point solvent is a mixture of DPNB and BCS.
The mass ratio of DPNB to BCS is 4: 1.
the invention has the beneficial effects that: the prior waterborne polypropylene finish paint can only reach 60 mu m without explosion, and can reach 100 mu m through formula optimization; the detection adopts a spray plate to test the film thickness gradient experiment, and the thickness test of the sprayed dry film is carried out once to obtain the 100-micron non-explosion bubble.
The high boiling point solvent used in the invention reduces the side reaction between water in the system and the curing agent on one hand, and reduces the drying speed of the surface layer of the coating on the other hand, so that the side reaction generated in time can be volatilized out to avoid generating the prickly heat; the curing agent used in the invention is a low-activity isocyanate curing agent, and the reaction speed is much slower than that of the ordinary curing agent after the AB component is mixed, so that the occurrence of side reaction is reduced; the invention is just on the reasonable matching of the solvent and the curing agent, thereby obviously improving the anti-explosion limit of the coating. The reaction speed of the hydroxypropyl dispersion is accelerated along with the reduction of the hydroxyl content, the hydroxyl content is 4.5 percent at the lowest through testing, if the hydroxyl content is 4.0 percent, the final explosion limit can only reach 70 micrometers, and the lower the explosion limit is, the lower the explosion limit is.
The specific implementation mode is as follows:
for better understanding of the present invention, the technical solution of the present invention will be described in detail with specific examples, but the present invention is not limited thereto.
Example 1
A waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit comprises A, B components;
the component A comprises the following raw materials in parts by weight:
68 parts of water-based hydroxypropyl dispersoid, the hydroxyl content of the adopted hydroxypropyl dispersoid is 5.0 percent,
8 portions of deionized water
6 parts of high-boiling-point solvent (BCS + DPNB), wherein the mass ratio of the DPNB to the BCS is 4: 1,
1 part of dispersant (efcona4560),
0.2 portion of defoaming agent (BYK-022),
0.6 part of thixotropic agent (Haimines 299),
12 parts of a pigment and a filler,
0.4 part of base material wetting agent (BYK-346),
0.4 part of thickener (Haimines 299);
the component B comprises 89 parts of Bayer 3900 curing agent and 11 parts of cosolvent PGDA.
The weight ratio of the component A to the component B is 5: 1.
example 2
A waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit comprises A, B components;
the component A comprises the following raw materials in parts by weight:
65 parts of water-based hydroxypropyl dispersoid, the hydroxyl content of the adopted hydroxypropyl dispersoid is 5.0 percent,
10 portions of deionized water
5 parts of high-boiling-point solvent (BCS + DPNB), wherein the mass ratio of the DPNB to the BCS is 4: 1,
1.5 parts of dispersant (efcona4560),
0.3 part of defoaming agent (BYK-022),
1 part of thixotropic agent (Haimines 299),
15 parts of a pigment and a filler,
0.5 part of base material wetting agent (BYK-346),
0.5 part of thickener (Haimines 299);
the component B comprises 88 parts of Bayer 3900 curing agent and 10 parts of cosolvent PGDA.
The weight ratio of the component A to the component B is 5: 1.
example 3
A waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit comprises A, B components;
the component A comprises the following raw materials in parts by weight:
70 parts of water-based hydroxypropyl dispersoid, the hydroxyl content of the adopted hydroxypropyl dispersoid is 4.8 percent,
10 portions of deionized water
7 parts of high-boiling-point solvent (BCS + DPNB), wherein the mass ratio of the DPNB to the BCS is 4: 1,
0.5 part of dispersant (efcona4560),
0.1 part of defoaming agent (BYK-022),
0.5 part of thixotropic agent (Haimines 299),
10 parts of pigment and filler,
0.3 part of base material wetting agent (BYK-346),
0.3 part of thickener (Haimines 299);
the component B comprises 90 parts of Bayer 3900 curing agent and 12 parts of cosolvent PGDA.
The weight ratio of the component A to the component B is 5: 1.
the products of examples 1-3 were tested and the data are shown in Table 1:
TABLE 1
Test example 1
The water-based acrylic polyurethane finish paint comprises A, B components;
the component A comprises the following raw materials in parts by weight:
68 parts of water-based hydroxypropyl dispersoid, the hydroxyl content of the adopted hydroxypropyl dispersoid is 4.0 percent,
8 portions of deionized water
6 parts of high-boiling-point solvent (BCS + DPNB), wherein the mass ratio of the DPNB to the BCS is 4: 1,
1 part of dispersant (efcona4560),
0.2 portion of defoaming agent (BYK-022),
0.6 part of thixotropic agent (Haimines 299),
12 parts of a pigment and a filler,
0.4 part of base material wetting agent (BYK-346),
0.4 part of thickener (Haimines 299);
the component B comprises 89 parts of Bayer 3900 curing agent and 11 parts of cosolvent PGDA.
The weight ratio of the component A to the component B is 5: 1.
the hydroxyl content of the adopted hydroxypropyl dispersion is 4.0, and then a bursting test is carried out, wherein the bursting limit is only 70 microns, and the effect of the invention is far from achieved.
Claims (9)
1. The water-based acrylic polyurethane finish paint capable of obviously improving the explosion limit is characterized by comprising a hydroxypropyl dispersion and a curing agent, wherein the hydroxyl content of the adopted hydroxypropyl dispersion is 4.5-5.0%.
2. The waterborne acrylic polyurethane finish paint capable of obviously improving the bursting limit of the steel plate according to claim 1, which comprises A, B two components; the component A comprises an aqueous hydroxypropyl dispersion, deionized water, a high-boiling-point solvent, a dispersing agent, a defoaming agent, a thixotropic agent, a pigment filler, a base material wetting agent and a thickening agent; the component B consists of a curing agent and a cosolvent.
3. The waterborne acrylic polyurethane finish paint capable of obviously improving the implosion limit of the paint as claimed in claim 2, wherein the weight ratio of the component A to the component B is 5: 1.
4. the waterborne acrylic polyurethane finish paint capable of obviously improving the explosion limit of the paint as claimed in claim 2, is characterized in that the component A comprises the following raw materials in parts by weight:
65-70 parts of aqueous hydroxypropyl dispersion,
7-10 parts of deionized water,
4-7 parts of a high-boiling-point solvent,
0.5 to 1.5 portions of dispersant,
0.1 to 0.3 portion of defoaming agent,
0.5 to 1 portion of thixotropic agent,
10-15 parts of a pigment filler,
0.3 to 0.5 portion of base material wetting agent,
0.3 to 0.5 portion of thickening agent.
5. The waterborne acrylic polyurethane topcoat capable of substantially increasing the implosion limit of claim 2, wherein the high boiling solvent is a mixture of DPNB and BCS.
6. The waterborne acrylic polyurethane finish paint capable of obviously improving the implosion limit of the paint as claimed in claim 5, wherein the mass ratio of DPNB to BCS is 4: 1.
7. the waterborne acrylic polyurethane finish paint capable of obviously improving the implosion limit of the paint as claimed in claim 2, wherein the component B comprises 88-90 parts by weight of curing agent and 10-12 parts by weight of cosolvent.
8. The waterborne acrylic polyurethane topcoat capable of substantially increasing the implosion limit of claim 7, wherein the curing agent is bayer 3900.
9. The waterborne acrylic polyurethane finish paint capable of obviously improving the implosion limit of the paint of claim 7, wherein the cosolvent is PGDA.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423309.0A CN111073497A (en) | 2019-12-31 | 2019-12-31 | Waterborne acrylic polyurethane finish paint capable of obviously improving explosion limit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911423309.0A CN111073497A (en) | 2019-12-31 | 2019-12-31 | Waterborne acrylic polyurethane finish paint capable of obviously improving explosion limit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111073497A true CN111073497A (en) | 2020-04-28 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911423309.0A Withdrawn CN111073497A (en) | 2019-12-31 | 2019-12-31 | Waterborne acrylic polyurethane finish paint capable of obviously improving explosion limit |
Country Status (1)
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| CN (1) | CN111073497A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877107A (en) * | 2014-02-28 | 2015-09-02 | 拜耳材料科技(中国)有限公司 | Aqueous dual-component polyurethane paint system |
| CN104893527A (en) * | 2015-06-09 | 2015-09-09 | 浩力森涂料（上海）有限公司 | Aqueous polyurethane coating with increased limiting film thickness and preparation method of aqueous polyurethane coating |
| CN108059912A (en) * | 2018-01-02 | 2018-05-22 | 河北晨阳工贸集团有限公司 | Aqueous polyurethane finishing coat for gas turbine blower blade and preparation method thereof |
| CN108250923A (en) * | 2016-12-28 | 2018-07-06 | 河北晨阳工贸集团有限公司 | A kind of aqueous extra-weather-proof double-component acrylic acid polyurethane finishing coat and preparation method thereof |
| CN110577794A (en) * | 2019-10-14 | 2019-12-17 | 紫荆花涂料（上海）有限公司 | Water-based floor marking paint and preparation method thereof |
-
2019
- 2019-12-31 CN CN201911423309.0A patent/CN111073497A/en not_active Withdrawn
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104877107A (en) * | 2014-02-28 | 2015-09-02 | 拜耳材料科技(中国)有限公司 | Aqueous dual-component polyurethane paint system |
| CN104893527A (en) * | 2015-06-09 | 2015-09-09 | 浩力森涂料（上海）有限公司 | Aqueous polyurethane coating with increased limiting film thickness and preparation method of aqueous polyurethane coating |
| CN108250923A (en) * | 2016-12-28 | 2018-07-06 | 河北晨阳工贸集团有限公司 | A kind of aqueous extra-weather-proof double-component acrylic acid polyurethane finishing coat and preparation method thereof |
| CN108059912A (en) * | 2018-01-02 | 2018-05-22 | 河北晨阳工贸集团有限公司 | Aqueous polyurethane finishing coat for gas turbine blower blade and preparation method thereof |
| CN110577794A (en) * | 2019-10-14 | 2019-12-17 | 紫荆花涂料（上海）有限公司 | Water-based floor marking paint and preparation method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20200428 |
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| WW01 | Invention patent application withdrawn after publication |