CN113913101A - Water-based scratch-resistant wear-resistant wood paint and preparation method thereof - Google Patents
Water-based scratch-resistant wear-resistant wood paint and preparation method thereof Download PDFInfo
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Abstract
The invention discloses a waterborne scratch-resistant wear-resistant wood paint and a preparation method thereof, wherein the waterborne scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder and the like, and the coating has advantages in the establishment of drying speed and hardness, thus being beneficial to shortening construction period and saving time and cost; the waterborne polyurethane emulsion does not contain any solvent, has good film-forming property, can be blended with other emulsions, effectively reduces the dosage of a film-forming additive (solvent), and reduces the VOC (volatile organic compound) of a formula system; the breaking strength and the breaking elongation are high, and the coating has excellent flexibility and can be blended with acrylic emulsion to improve the flexibility; the woodenware coating based on the solvent-free waterborne polyurethane has the advantages of smooth coating, high permeability, fullness and hardness, excellent water resistance and chemical resistance of the coating, good comprehensive performance and wide application prospect in the field of waterborne woodenware coatings.
Description
Technical Field
The invention relates to the technical field of coatings, in particular to a water-based scratch-resistant wear-resistant wood paint and a preparation method thereof.
Background
Paint is a chemical mixture coating that can be firmly covered on the surface of an object for protection, decoration, marking and other special purposes.
The solvent-type wood coating contains a large amount of organic volatile compounds, not only influences the health of production and construction personnel, but also pollutes the environment and wastes resources, along with the restriction of environmental regulations and related policies on the use and discharge of VOC, the water-based wood coating is one of the development trends of the coating industry, the water-based resin represented by water-based polyurethane and water-based acrylic ester plays more and more important roles in the coating, particularly the water-based polyurethane coating is safe and environment-friendly, has the characteristics of outstanding performance of the material, high strength, wear resistance, low-temperature film forming property, flexibility and the like required by the coating, and can be blended with the acrylic resin to improve the performance, so that the water-based wood coating with high hardness, excellent wear resistance and no pollution is necessary, and has a large market prospect.
SUMMARY OF THE PATENT FOR INVENTION
The invention aims to provide a water-based scratch-resistant wear-resistant wood paint and a preparation method thereof, and in order to achieve the aim, the invention provides the following technical scheme: the water-based scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water.
Preferably, the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water.
Preferably, the aqueous polyurethane emulsion is prepared from isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000), polytetrahydrofuran ether glycol (PTMEG1000), 1, 4-Butanediol (BDO), dimethylolpropionic acid (DMPA), DMEA and ethylenediamine.
A preparation method of aqueous polyurethane emulsion comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, a certain amount of acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersing cup after the neutralization is finished, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation.
Preferably, the heating temperature of the reaction of isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) is 80 ℃, and the reaction time lasts for 1 h.
Preferably, the reaction temperature after adding the BDO, the DMPA, the quantitative acetone and the diluted catalyst is 75 ℃, and the rotating speed of equipment during high-speed dispersion after adding the deionized water is 1200 r/min.
A preparation method of water-based scratch-resistant wear-resistant wood paint comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) and (4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished.
Preferably, in the step (2), the rotation speed of the stirrer is 1000r/min, the duration is 15min, and the addition amount of the defoaming agent is one third of the total amount.
Preferably, in the step (3), the rotation speed of the stirrer is 800r/min, and the duration time is 10 min.
Preferably, in the step (4), the rotation speed of the stirrer is 800r/min, the duration time is 15min, and the aperture of the filter screen during filtering is 200 meshes.
Compared with the prior art, the invention has the following beneficial effects:
1. in the invention, IPDI is used as a hard segment, PPG1000 and PTMEG1000 are cooperated to be a soft segment, BDO and DMPA are small molecular chain extenders and contain no organic solvents such as NEP and the like, so that an environment-friendly solvent-free waterborne polyurethane emulsion is prepared, and the waterborne polyurethane has a very low film forming temperature.
2. Compared with the mainstream products in the market, the coating has the advantages of high drying speed and hardness, and is beneficial to shortening the construction period and saving the time cost; the waterborne polyurethane emulsion does not contain any solvent, has good film-forming property, can be blended with other emulsions, effectively reduces the dosage of a film-forming additive (solvent), and reduces the VOC (volatile organic compound) of a formula system; the breaking strength and the breaking elongation are high, and the coating has excellent flexibility and can be blended with acrylic emulsion to improve the flexibility; the woodenware coating based on the solvent-free waterborne polyurethane has the advantages of smooth coating, high permeability, fullness and hardness, excellent water resistance and chemical resistance of the coating, good comprehensive performance and wide application prospect in the field of waterborne woodenware coatings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments in the present invention patent, and it is obvious that the described embodiments are only a part of the embodiments of the present invention patent, and not all of the embodiments. All other embodiments obtained by a person skilled in the art based on the embodiments in the patent of the invention without any inventive work belong to the protection scope of the patent of the invention.
The water-based scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water; the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water;
a preparation method of aqueous polyurethane emulsion comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, quantitative acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersion cup, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation;
a preparation method of water-based scratch-resistant wear-resistant wood paint comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) and (4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished.
The first embodiment is as follows:
the water-based scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water; the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water;
a preparation method of aqueous polyurethane emulsion comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, quantitative acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersion cup, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation;
a preparation method of water-based scratch-resistant wear-resistant wood paint comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished;
in the embodiment, the aqueous polyurethane emulsion is prepared from isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000), polytetrahydrofuran ether glycol (PTMEG1000), 1, 4-Butanediol (BDO), dimethylolpropionic acid (DMPA), DMEA and ethylenediamine, the heating temperature of the reaction of isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) is 80 ℃, the reaction time lasts for 1h, IPDI is used as a hard segment, PPG1000 and PTMEG1000 are cooperated to form a soft segment, BDO and DMPA are small molecular chain extenders, and organic solvents such as NEP and the like are not contained, so that the environment-friendly solvent-free aqueous polyurethane emulsion is prepared, the aqueous polyurethane has a very low film forming temperature, and in the application process, the coating prepared from the aqueous polyurethane emulsion has excellent hardness and wear resistance, meanwhile, the coating has excellent environmental protection performance and no release of toxic and harmful gases, so the comprehensive application performance of the coating is superior to that of the mainstream products in the market.
Example two:
the water-based scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water; the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water;
a preparation method of aqueous polyurethane emulsion comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, quantitative acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersion cup, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation;
a preparation method of water-based scratch-resistant wear-resistant wood paint comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished;
in the embodiment, the aqueous polyurethane emulsion is prepared from isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000), polytetrahydrofuran ether glycol (PTMEG1000), 1, 4-Butanediol (BDO), dimethylolpropionic acid (DMPA), DMEA and ethylenediamine, the heating temperature of the reaction of isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) is 80 ℃, the reaction time lasts for 1h, the reaction temperature after BDO, DMPA, quantitative acetone and a dilution catalyst are added is 75 ℃, the rotating speed of equipment for high-speed dispersion after deionized water is added is 1200r/min, in the step (2), the rotating speed of a stirrer is 1000r/min and the reaction time lasts for 15min, the addition amount of a defoaming agent is one third of the total amount, the hard segment is adopted by adopting I, the soft segment is cooperated by PPG1000 and PTMEG1000, BDO and DMPA are micromolecular chain extenders, organic solvents such as NEP and the like are not contained, a solvent-free waterborne polyurethane emulsion which is environment-friendly is prepared, the waterborne polyurethane has very low film forming temperature, in the application process, a coating prepared by the waterborne polyurethane emulsion has excellent hardness and wear resistance, and meanwhile, the coating has excellent environmental protection performance and no release of toxic and harmful gases, so the comprehensive application performance of the coating is superior to that of a mainstream product in the market.
Example three:
the water-based scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water; the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water;
a preparation method of aqueous polyurethane emulsion comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, quantitative acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersion cup, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation;
a preparation method of water-based scratch-resistant wear-resistant wood paint comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished;
in the embodiment, the aqueous polyurethane emulsion is prepared from isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000), polytetrahydrofuran ether glycol (PTMEG1000), 1, 4-Butanediol (BDO), dimethylolpropionic acid (DMPA), DMEA and ethylenediamine, the heating temperature of the isophorone diisocyanate (IPDI), the polyoxypropylene glycol 1000(PPG1000) and the polytetrahydrofuran ether glycol (PTMEG1000) in the reaction is 80 ℃, the reaction time lasts for 1h, the reaction temperature after the BDO, the DMPA, quantitative acetone and a dilution catalyst are added is 75 ℃, the rotating speed of equipment in high-speed dispersion after deionized water is added is 1200r/min, in the step (2), the rotating speed of a stirrer is 1000r/min and the duration is 15min, the addition amount of a defoaming agent is one third of the total amount, in the step (3), the rotating speed of the stirrer is 800r/min, and the duration is 10min, in the step (4), the rotating speed of the stirrer is 800r/min, the duration is 15min, the aperture of a filter screen during filtering is 200 meshes, IPDI (isophorone diisocyanate) is used as a hard segment, PPG1000 and PTMEG1000 are cooperated to be a soft segment, BDO and DMPA (dimethyl dichloroisocyanurate) are small molecular chain extenders, and NEP and other organic solvents are not contained, so that an environment-friendly solvent-free waterborne polyurethane emulsion is prepared, the waterborne polyurethane has a very low film forming temperature, and in the application process, the coating prepared by the waterborne polyurethane emulsion has excellent hardness and wear resistance, meanwhile, the coating is excellent in environmental protection performance and free of toxic and harmful gas release, so the comprehensive application performance of the coating is superior to that of a mainstream product in the market, and the coating prepared by the method is subjected to performance detection:
table 1 shows the properties of the aqueous polyurethane emulsion:
| item | Performance parameter |
| Appearance of the emulsion | Blue transparent emulsion |
| Particle size/nm | About 55 |
| pH value | 7-9 |
| Fraction of solids/%) | 35 |
| viscosity/(mPa. s) | 200 |
| MFFT/℃ | 7 |
| Hardness of pencil | HB |
| Breaking strength/MPa | 35 |
| 100% modulus/MPa | 20 |
| Elongation at break/% | 250 |
| Impact resistance/(kg cm) | 100 |
| Flexibility/mm | 0.5 |
As shown in table 1, the aqueous polyurethane emulsion prepared herein has stable performance, under the condition of 35% solid content, the particle size of the emulsion is 55nm, the viscosity of the emulsion is 200mPa · s, the viscosity is moderate, the lowest film forming temperature of the aqueous polyurethane is 7 ℃, the normal-temperature film forming can be realized under the condition of not adding any film forming additive, under the condition of adding 1% -2% of the film forming additive, the low-temperature film forming performance is excellent, the use proportion of the film forming additive in the paint preparing process can be effectively reduced, and meanwhile, table 2 shows that under the condition of having excellent film forming performance, the breaking strength of the film formed by the emulsion is 35mPa, the 100% modulus is 20mPa, the breaking elongation is 250%, and the mechanical performance of the film is excellent; after the emulsion is applied to paint preparation, the pencil hardness is HB, the impact resistance is 100kg cm, the flexibility is 0.5mm, and the application mechanical property is excellent;
table 2 is the drying time and hardness:
| item | Aqueous polyurethane emulsion | Market like product |
| Surface drying time/min | 22 | 26 |
| Actual drying time/min | 37 | 43 |
| Gloss/% | 29 | 30 |
| Hardness of pencil | HB | B |
As shown in the data in Table 2, after the waterborne polyurethane prepared in the method is prepared into a coating, the coating has high hardness and good wear resistance, and has advantages in drying speed and hardness establishment, so that the method is beneficial to shortening the construction period and saving the time cost;
table 3 shows the results of the chemical resistance test:
| item | Aqueous polyurethane emulsion | Market like product |
| Degree of permeability | Is excellent in | In general |
| Fullness degree | Is excellent in | In general |
| Water-resistant (24h) | 5 | 5 |
| Resistant alcohol (50%, 1h) | 4 | 3 |
| Acid resistant (30% acetic acid, 1h) | 4 | 3 |
| Alkali resistance (5% sodium bicarbonate, 1h) | 5 | 4 |
| Anti-red wine (1h) | 4 | 4 |
| Resistant green tea (1h) | 5 | 5 |
Note: 5-best, 0-worst.
As shown in the data in Table 2, compared with similar products in the market, the waterborne polyurethane emulsion has great advantages in the aspects of chemical resistance and permeability, and can be applied to the fields of furniture, home decoration and the like with high performance requirements.
Although embodiments of the present patent have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the present patent, the scope of which is defined in the appended claims and their equivalents.
Claims (10)
1. The utility model provides a wear-resisting wooden furniture lacquer of waterborne scratch resistance which characterized in that: the waterborne scratch-resistant wear-resistant wood paint comprises the following components in percentage by mass: 80-90% of aqueous polyurethane emulsion, 0.1-0.5% of defoaming agent, 1-2% of matting powder, 1-5% of film-forming assistant, 0.1-0.6% of wetting agent, 0.2-0.4% of flatting agent, 0.1-0.3% of thickening agent, 0.1-0.2% of preservative and the balance of water.
2. The aqueous scratch-resistant wear-resistant wood paint as claimed in claim 1, wherein: the water-based scratch-resistant wear-resistant wood paint comprises the following components in parts by weight: 87.5 parts of aqueous polyurethane emulsion, 0.3 part of defoaming agent, 1.5 parts of flatting powder, 2.5 parts of film-forming assistant, 0.3 part of wetting agent, 0.3 part of flatting agent, 0.2 part of thickening agent, 0.1 part of preservative and the balance of water.
3. The aqueous scratch-resistant wear-resistant wood paint as claimed in claim 1, wherein: the waterborne polyurethane emulsion is prepared from isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000), polytetrahydrofuran ether glycol (PTMEG1000), 1, 4-Butanediol (BDO), dimethylolpropionic acid (DMPA), DMEA and ethylenediamine.
4. The method for producing an aqueous polyurethane emulsion according to any one of claims 1 to 3, characterized in that: the preparation method comprises the following steps: adding isophorone diisocyanate (IPDI), polyoxypropylene glycol 1000(PPG1000) and polytetrahydrofuran ether glycol (PTMEG1000) in a metered ratio into a four-neck flask provided with a stirrer, a thermometer and a reflux condenser, heating for reacting for a certain time, adding BDO, DMPA, a certain amount of acetone and a diluting catalyst, heating for reacting, adding a certain amount of acetone to dilute a prepolymerization system after the theoretical-NCO value is reached, adding DMEA for neutralization after the temperature is reduced to a proper temperature, pouring a polymer into a dispersing cup after the neutralization is finished, adding deionized water under high-speed stirring, obtaining an aqueous polyurethane dispersion liquid under high-speed dispersion, adding ethylenediamine for chain extension, and completing emulsion preparation.
5. The method for preparing the aqueous polyurethane emulsion according to claim 4, wherein the method comprises the following steps: the heating temperature of the isophorone diisocyanate (IPDI), the polyoxypropylene glycol 1000(PPG1000) and the polytetrahydrofuran ether glycol (PTMEG1000) in the reaction is 80 ℃, and the reaction time lasts for 1 h.
6. The method for preparing the aqueous polyurethane emulsion according to claim 4, wherein the method comprises the following steps: the reaction temperature after adding the BDO, the DMPA, the quantitative acetone and the diluted catalyst is 75 ℃, and the rotating speed of equipment during high-speed dispersion after adding the deionized water is 1200 r/min.
7. The aqueous scratch-resistant wear-resistant wood lacquer and the preparation method thereof according to any one of claims 1 to 6, wherein the paint comprises the following components in percentage by weight: the preparation method comprises the following steps:
(1) preparing the raw materials according to the proportion of the formula for later use;
(2) adding the aqueous polyurethane emulsion into a stirrer, sequentially adding part of defoaming agent and matting powder into the stirrer, and rapidly dispersing for a certain time;
(3) adding the film forming assistant, the flatting agent, the wetting agent, the thickening agent and water into another stirrer for fully mixing;
(4) and (4) slowly adding the liquid mixed in the step three into the stirrer in the step two, sequentially adding the rest defoaming agent and the rest preservative in the stirring process of the stirrer, fully mixing, and filtering and discharging after the mixing is finished.
8. The aqueous scratch-resistant wear-resistant wood paint and the preparation method thereof according to claim 7, wherein the paint comprises the following components in percentage by weight: in the step (2), the rotating speed of the stirrer is 1000r/min, the duration time is 15min, and the addition amount of the defoaming agent is one third of the total amount.
9. The aqueous scratch-resistant wear-resistant wood paint and the preparation method thereof according to claim 7, wherein the paint comprises the following components in percentage by weight: in the step (3), the rotating speed of the stirrer is 800r/min, and the duration time is 10 min.
10. The aqueous scratch-resistant wear-resistant wood paint and the preparation method thereof according to claim 7, wherein the paint comprises the following components in percentage by weight: in the step (4), the rotating speed of the stirrer is 800r/min, the duration time is 15min, and the aperture of the filter screen is 200 meshes during filtering.
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|---|---|---|---|---|
| CN117925085A (en) * | 2024-02-01 | 2024-04-26 | 安徽名士达新材料有限公司 | Modified water-based paint for woodware and preparation method thereof |
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| CN103130977A (en) * | 2013-01-08 | 2013-06-05 | 厦门大学 | Polyol polyurethane dispersions of two-component waterborne wood lacquer and preparation method thereof |
| CN105085854A (en) * | 2014-05-09 | 2015-11-25 | 武汉强力荷新材料有限公司 | Preparation method of solvent-free environment-friendly aqueous polyurethane emulsion with multi-model particle size distribution, high solid content, and low viscosity |
| CN106833337A (en) * | 2017-02-23 | 2017-06-13 | 广州梵竹水性涂料有限公司 | A kind of scratch resistance water-borne wood coating and preparation method thereof |
| CN113248998A (en) * | 2021-05-19 | 2021-08-13 | 上海涂固安高科技有限公司 | Water-based scratch-resistant wear-resistant wood paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN103130977A (en) * | 2013-01-08 | 2013-06-05 | 厦门大学 | Polyol polyurethane dispersions of two-component waterborne wood lacquer and preparation method thereof |
| CN105085854A (en) * | 2014-05-09 | 2015-11-25 | 武汉强力荷新材料有限公司 | Preparation method of solvent-free environment-friendly aqueous polyurethane emulsion with multi-model particle size distribution, high solid content, and low viscosity |
| CN106833337A (en) * | 2017-02-23 | 2017-06-13 | 广州梵竹水性涂料有限公司 | A kind of scratch resistance water-borne wood coating and preparation method thereof |
| CN113248998A (en) * | 2021-05-19 | 2021-08-13 | 上海涂固安高科技有限公司 | Water-based scratch-resistant wear-resistant wood paint and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117925085A (en) * | 2024-02-01 | 2024-04-26 | 安徽名士达新材料有限公司 | Modified water-based paint for woodware and preparation method thereof |
| CN117925085B (en) * | 2024-02-01 | 2024-09-24 | 安徽名士达新材料有限公司 | Modified water-based paint for woodware and preparation method thereof |
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