CN112029353B - Preparation method of N-methylolacrylamide composite water-based acrylic coating for wickerwork - Google Patents
Preparation method of N-methylolacrylamide composite water-based acrylic coating for wickerwork Download PDFInfo
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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
- C09D133/00—Coating compositions based on homopolymers or copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by only one carboxyl radical, or of salts, anhydrides, esters, amides, imides, or nitriles thereof; Coating compositions based on derivatives of such polymers
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- C08F—MACROMOLECULAR COMPOUNDS OBTAINED BY REACTIONS ONLY INVOLVING CARBON-TO-CARBON UNSATURATED BONDS
- C08F222/00—Copolymers of compounds having one or more unsaturated aliphatic radicals, each having only one carbon-to-carbon double bond, and at least one being terminated by a carboxyl radical and containing at least one other carboxyl radical in the molecule; Salts, anhydrides, esters, amides, imides, or nitriles thereof
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C09D7/60—Additives non-macromolecular
- C09D7/61—Additives non-macromolecular inorganic
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- C09D7/00—Features of coating compositions, not provided for in group C09D5/00; Processes for incorporating ingredients in coating compositions
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- C08K3/18—Oxygen-containing compounds, e.g. metal carbonyls
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Abstract
The invention discloses a preparation method of N-hydroxymethyl acrylamide composite water-based acrylic coating for wickerwork; relates to the technical field of artware, comprising: (1) preparing gel resin; (2) a castor oil-based compound; (3) mixing the raw materials; the paint prepared by the method has excellent adhesive force and impact resistance, the formed coating has better bonding performance with the surface of a wicker product by being painted on the surface of the wicker, the bonding force between the coating and the wicker product can be greatly improved through the promotion effect of the gel resin, and the adhesive force is greatly increased.
Description
Technical Field
The invention belongs to the technical field of artware, and particularly relates to a preparation method of an N-hydroxymethyl acrylamide composite water-based acrylic coating for wickerwork.
Background
Willow has strong adaptability to the environment, the growth of willow is all over the country, different regions breed different weaving cultures, and people can obtain inspiration from shading by straw hats woven by willow twigs to develop richer weaving skills. Willow is of many varieties and can be used for weaving, mainly: salix mongolica, salix integra, salix matsudana, salix caprea, salix saponaria, salix sagittaria, salix sinensissima and the like. The willow growth cycle is short, the willow can be grown into timber as a raw material in one year generally, the timber yield is high, the raw material supply is sufficient, the material taking is convenient, the willow weaving products are containers, artware and the like which are common in life of people at present, the willow weaving products are various in types, such as mats, baskets, dustpans, basketries, wicker boxes, shallow baskets, flower baskets, wicker fences, eating trays and the like, and through innovation and development, a plurality of decoration articles such as flowerpots, vases, lampshades and the like are formed and are deeply loved by people.
Disclosure of Invention
The invention aims to provide a preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork, which aims to overcome the defects in the prior art.
The technical scheme adopted by the invention is as follows:
a preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 50-60 ℃, preserving heat for 10-12 hours, filtering, washing to neutrality, and drying to obtain gel resin;
(2) castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 110-115 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 15-20min, then adding a solid acid catalyst, continuing stirring for 2 h, then cooling to room temperature, adjusting the pH value of the system to be neutral, standing for 2 h, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution;
(3) mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 30-35min, then performing ultrasonic treatment for 10-15min, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel.
The molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1.
The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 3-5:1-1.6:0.8-0.9:50.
The initiator is ammonium persulfate.
The organic solvent is toluene;
the mass fraction of the ricinoleic acid solution is 20-25%.
The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1;
the weight ratio of the glycol to the nano zeolite powder is 15: 1-2.
The solid acid catalyst is B2O3-Al2O3；
The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
The weight parts of the water-based acrylic resin, water, titanium dioxide, castor oil-based compound, gel resin, defoaming agent and wetting agent are as follows: 80:50:15:6-8:5-6:1.2: 1.5;
the defoaming agent is an organic silicon defoaming agent;
the wetting agent is: polyethylene glycol 200.
The ultrasonic frequency is 35kHz, and the power is 500W.
Aqueous coating materials also have disadvantages in use because their polymers have a high glass transition temperature (Tg), and a coating film is cracked during construction at normal temperature, which requires a reduction in film-forming temperature in order to form a uniform and continuous coating film. Therefore, the invention reduces the glass transition temperature of the polymer by preparing the castor oil-based compound, thereby reducing the film forming temperature, helping the emulsion polymer to form a film, further forming a uniform and continuous coating and greatly improving the comprehensive performance of the coating;
has the advantages that:
the paint prepared by the method has excellent adhesive force and impact resistance, the formed coating has better bonding performance with the surface of a wicker product by being painted on the surface of the wicker, the bonding force between the coating and the wicker product can be greatly improved through the promotion effect of the gel resin, and the adhesive force is greatly increased.
The paint prepared by the method has excellent aging resistance, the aging resistance of the surface of the coating formed after curing can be greatly improved through the synergistic promotion effect of the prepared gel resin and the castor oil-based compound, the service life of the surface coating of the wicker product can be further prolonged through obviously improving the aging resistance of the coating, and the service life of the wicker product is indirectly prolonged through reducing the use cost.
Detailed Description
A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 50-60 ℃, preserving heat for 10-12 hours, filtering, washing to neutrality, and drying to obtain gel resin;
itaconic acid: the name is methylene succinic acid, which is unsaturated dibasic organic acid. It contains unsaturated double bond, has active chemical property, can be polymerized among themselves, can also be polymerized with other monomers such as acrylonitrile, is slightly soluble in benzene, chloroform, ether, petroleum ether and carbon disulfide, and is soluble in water, ethanol and acetone; can carry out various addition reactions, esterification reactions and polymerization reactions, is an important raw material in the chemical synthesis industry and is also an important raw material in chemical production;
appearance: white crystals or powder. Has special odor and can be sublimated under vacuum.
Solubility: soluble in water, ethanol and acetone, and slightly soluble in chloroform, benzene and diethyl ether. Is not easy to volatilize and can be decomposed by overheating;
the content is more than or equal to 99.8 percent;
the melting point (initial melting-final melting) is less than or equal to 165-168 ℃;
the drying weight loss is less than or equal to 0.2;
the burning residue percent is less than or equal to 0.01;
the chroma (APHA) is less than or equal to 5;
the percentage of iron ions (calculated by Fe) is less than or equal to 0.00015;
the percentage of heavy metal (calculated by pb) is less than or equal to 0.0005;
chloride (calculated by Cl < - >) is less than or equal to 0.0005;
sulfate (SO 42-)%, is less than or equal to 0.0015;
density: 1.573g/cm3；
Melting point: 166-167 ℃;
boiling point: 381.4 ℃ at 760 mmHg;
flash point: 198.7 ℃;
vapor pressure: 7.11E-07mmHg at 25 ℃;
(2) castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 110-115 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 15-20min, then adding a solid acid catalyst, continuing stirring for 2 h, then cooling to room temperature, adjusting the pH value of the system to be neutral, standing for 2 h, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution;
ricinoleic acid: molecular weight 298.46;
molecular formula C18H34O3；
(3) Mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 30-35min, then performing ultrasonic treatment for 10-15min, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel.
The molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1.
The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 3-5:1-1.6:0.8-0.9:50.
N, N-methylenebisacrylamide:
appearance (Appearance): white crystalline powder;
content (Purity): 98.0 percent;
dissolving in water, ethanol, acetone, etc
Melting point: 184 ℃ (decomposition);
density 1.352;
sulfate, less than or equal to 0.5 percent;
firing residues, wherein mg/g is less than or equal to 2.0;
solubility: H2O, 20 mg/mL, 20 ℃, is clear and colorless;
the initiator is ammonium persulfate.
The organic solvent is toluene;
the mass fraction of the ricinoleic acid solution is 20-25%.
The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1;
the weight ratio of the glycol to the nano zeolite powder is 15: 1-2.
The solid acid catalyst is B2O3-Al2O3；
The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
The weight parts of the water-based acrylic resin, water, titanium dioxide, castor oil-based compound, gel resin, defoaming agent and wetting agent are as follows: 80:50:15:6-8:5-6:1.2: 1.5;
the defoaming agent is an organic silicon defoaming agent;
the wetting agent is: polyethylene glycol 200.
The ultrasonic frequency is 35kHz, and the power is 500W.
The following will clearly and completely describe the technical solutions of the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 50 ℃, preserving heat for 10 hours, filtering, washing to be neutral, and drying to obtain gel resin; the molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1. The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 3:1:0.8:50. The initiator is ammonium persulfate.
(2) Castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 110 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 15min, then adding a solid acid catalyst, continuing stirring for 2 h, then cooling to room temperature, then adjusting the pH of the system to be neutral, standing for 2 h, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution; the organic solvent is toluene; the mass fraction of the ricinoleic acid solution is 20%. The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1; the weight ratio of the glycol to the nano zeolite powder is 15:1. The solid acid catalyst is B2O3-Al2O3(ii) a The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
(3) Mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing stirring for 30min, then treating by ultrasonic for 10min, finally adding the defoaming agent and the wetting agent, and continuing stirring for 40min to obtain the water-based acrylic resin gel. The weight parts of the water-based acrylic resin, water, titanium dioxide, the castor oil-based compound, the gel resin, the defoaming agent and the wetting agent are as follows: 80:50:15:6:5:1.2: 1.5; the defoaming agent is an organic silicon defoaming agent; the wetting agent is: polyethylene glycol 200. The ultrasonic frequency is 35kHz, and the power is 500W.
Example 2
A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 60 ℃, preserving heat for 12 hours, filtering, washing to be neutral, and drying to obtain gel resin; the molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1. The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 5:1.6:0.9:50. The initiator is ammonium persulfate.
(2) Castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 115 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 20min, then adding a solid acid catalyst, continuing stirring for 2 h, then cooling to room temperature, then adjusting the pH of the system to be neutral, standing for 2 h, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution; the organic solvent is toluene; the mass fraction of the ricinoleic acid solution is 25%. The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1; the weight ratio of the glycol to the nano zeolite powder is 15: 2. The solid acid catalyst is B2O3-Al2O3(ii) a The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
(3) Mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 35min, then treating for 15min by adopting ultrasonic waves, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel. The weight parts of the water-based acrylic resin, water, titanium dioxide, the castor oil-based compound, the gel resin, the defoaming agent and the wetting agent are as follows: 80:50:15:8:6:1.2: 1.5; the defoaming agent is an organic silicon defoaming agent; the wetting agent is: polyethylene glycol 200. The ultrasonic frequency is 35kHz, and the power is 500W.
Example 3
A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 52 ℃, preserving heat for 11 hours, filtering, washing to be neutral, and drying to obtain gel resin; the molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1. The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 4:1.2:0.85:50. The initiator is ammonium persulfate.
(2) Castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 112 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 18min, then adding a solid acid catalyst, continuing stirring for 2 hours, then cooling to room temperature, then adjusting the pH of the system to be neutral, standing for 2 hours, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution; the organic solvent is toluene; the mass fraction of the ricinoleic acid solution is 22%. The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1; the weight ratio of the glycol to the nano zeolite powder is 15: 1.5. The solid acid catalyst is B2O3-Al2O3(ii) a The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
(3) Mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 30-35min, then treating for 12min by adopting ultrasonic waves, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel. The weight parts of the water-based acrylic resin, water, titanium dioxide, the castor oil-based compound, the gel resin, the defoaming agent and the wetting agent are as follows: 80:50:15:7:5.3:1.2: 1.5; the defoaming agent is an organic silicon defoaming agent; the wetting agent is: polyethylene glycol 200. The ultrasonic frequency is 35kHz, and the power is 500W.
Example 4
A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork comprises the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 60 ℃, preserving heat for 10 hours, filtering, washing to be neutral, and drying to obtain gel resin; the molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1. The weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 5:1.2:0.8:50. The initiator is ammonium persulfate.
(2) Castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 112 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 20min, then adding a solid acid catalyst, continuing stirring for 2 hours, then cooling to room temperature, then adjusting the pH of the system to be neutral, standing for 2 hours, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution; the organic solvent is toluene; the mass fraction of the ricinoleic acid solution is 25%. The mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1; the weight ratio of the glycol to the nano zeolite powder is 15: 2. The solid acid catalyst is B2O3-Al2O3(ii) a The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
(3) Mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 35min, then treating by ultrasonic for 10min, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel. The weight parts of the water-based acrylic resin, water, titanium dioxide, the castor oil-based compound, the gel resin, the defoaming agent and the wetting agent are as follows: 80:50:15:7:6:1.2: 1.5; the defoaming agent is an organic silicon defoaming agent; the wetting agent is: polyethylene glycol 200. The ultrasonic frequency is 35kHz, and the power is 500W.
Test of
Taking wickers with the same specification as samples, uniformly coating the paints of the examples and the comparative examples on the surfaces of the wickers, and curing at 40 ℃ to form uniform coatings, wherein the difference of the thicknesses of the coatings is not more than 0.5 mu m;
and (3) carrying out performance detection on the sample:
reference is made to GB/T9286-1998 test for marking out paint and varnish paint films and GB/T1732-1993 test for measuring the impact resistance of paint films respectively;
testing the adhesion and impact resistance of the coating;
(Ten times per group, average value)
TABLE 1
| Adhesion/grade | Impact resistance (1 kg)/cm | |
| Example 1 | 1 | 50.2 |
| Example 2 | 0 | 50.5 |
| Example 3 | 0 | 50.9 |
| Example 4 | 0 | 51.4 |
| Comparative example 1 | 2 | 35.6 |
Comparative example 1: application No. 201110143578.9A coating with water-based acrylic resin as main material;
as can be seen from the table 1, the coating prepared by the method has excellent adhesive force and impact resistance, the coating is coated on the surface of the wicker, the bonding performance of the formed coating and the surface of the wicker product is better, the bonding force between the coating and the wicker product can be greatly improved through the promotion effect of the gel resin, and the adhesive force is greatly increased.
And (3) testing:
resistance to artificially accelerated aging
Testing the coated wicker sample;
adopting GP/UV-4 type ultraviolet aging test box of Shanghai Guangdong article test equipment manufacturing Limited company to carry out weather resistance test, selecting a xenon arc lamp light source, wherein the irradiance is 0.55W/m2(wavelength of 340nm), continuously illuminating, and rainfall for 18min every 102 min, wherein the temperature in the test chamber is 42 DEG CBlackboard temperature 63 ℃, relative humidity 55%, test 1300 h. Measuring a sample by using an XPG portable mirror gloss instrument produced by Tianjin Xintong optical technology company, and calculating the light loss rate according to the change of gloss;
TABLE 2
| The light loss rate% | |
| Example 1 | 10.258 |
| Example 2 | 10.627 |
| Example 3 | 11.104 |
| Example 4 | 11.527 |
| Comparative example 1 | 26.851 |
Comparative example 2: a method of preparing a coating comprising:
mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then treating by ultrasonic for 10min, finally adding the defoaming agent and the wetting agent, and continuously stirring for 40min to obtain the water-based acrylic resin titanium dioxide pigment. The weight parts of the water-based acrylic resin, water, titanium dioxide, the defoaming agent and the wetting agent are as follows: 80:50:15:1.2: 1.5; the defoaming agent is an organic silicon defoaming agent; the wetting agent is: polyethylene glycol 200;
the paint prepared by the method has excellent aging resistance, the aging resistance of the surface of the coating formed after curing can be greatly improved by the synergistic promotion effect of the prepared gel resin and the castor oil-based compound, the service life of the surface coating of the wicker product can be further prolonged by remarkably improving the aging resistance of the coating, and the service life of the wicker product is indirectly prolonged by reducing the use cost.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention, and the present invention is not limited to the illustrated embodiments, and all the modifications and equivalents of the embodiments may be made without departing from the spirit of the present invention.
Claims (9)
1. A preparation method of an N-methylolacrylamide composite water-based acrylic coating for wickerwork is characterized by comprising the following steps:
(1) preparing gel resin:
adding itaconic acid into a reaction kettle, introducing nitrogen into the reaction kettle, discharging air in the reaction kettle, adding a sodium hydroxide solution, stirring for reaction for 30min, adding N-methylolacrylamide, N-methylene-bisacrylamide and an initiator, heating to 30 ℃, stirring at the rotating speed of 500r/min for 2 hours, heating to 50-60 ℃, preserving heat for 10-12 hours, filtering, washing to neutrality, and drying to obtain gel resin;
(2) castor oil based compound:
dissolving ricinoleic acid into an organic solvent to obtain a ricinoleic acid solution, heating to 110-115 ℃, preserving heat for 15min, then adding ethylene glycol and nano zeolite powder, stirring for 15-20min, then adding a solid acid catalyst, continuing stirring for 2 h, then cooling to room temperature, adjusting the pH value of the system to be neutral, standing for 2 h, carrying out rotary evaporation under reduced pressure, and removing the solvent to obtain the ricinoleic acid solution;
(3) mixing raw materials:
sequentially adding the water-based acrylic resin, water and titanium dioxide into a stirrer, stirring at a high speed for 40min, then adding the castor oil-based compound and the gel resin, continuing to stir for 30-35min, then performing ultrasonic treatment for 10-15min, finally adding the defoaming agent and the wetting agent, and continuing to stir for 40min to obtain the water-based acrylic resin gel.
2. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 1, which is characterized in that: the molar ratio of the itaconic acid to the sodium hydroxide in the sodium hydroxide solution is 3:1.
3. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 1, which is characterized in that: the weight parts of the N-methylolacrylamide, the N, N-methylene bisacrylamide, the initiator and the itaconic acid are as follows: 3-5:1-1.6:0.8-0.9:50.
4. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 1 or 3, which is characterized in that: the initiator is ammonium persulfate.
5. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 1, which is characterized in that: the organic solvent is toluene;
the mass fraction of the ricinoleic acid solution is 20-25%.
6. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 5, which is characterized in that: the mixing molar ratio of ricinoleic acid to ethylene glycol in the ricinoleic acid solution is 1: 1;
the weight ratio of the glycol to the nano zeolite powder is 15: 1-2.
7. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 6The method is characterized in that: the solid acid catalyst is B2O3-Al2O3；
The weight ratio of the solid acid catalyst to the ethylene glycol is 1: 40.
8. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 7, which is characterized in that: the water-based acrylic resin, water, titanium dioxide, castor oil-based compound, gel resin, defoaming agent and wetting agent are as follows in parts by weight: 80:50:15:6-8:5-6:1.2: 1.5;
the defoaming agent is an organic silicon defoaming agent;
the wetting agent is: polyethylene glycol 200.
9. The preparation method of the N-methylolacrylamide composite water-based acrylic coating for wickerwork according to claim 1, which is characterized in that: the ultrasonic frequency is 35kHz, and the power is 500W.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1426032A2 (en) * | 2002-12-06 | 2004-06-09 | L'oreal | Oxidative dyeing composition for keratinic fibres comprising a non oxyalkylenated fatty alcohol, an oxidation dye, an associative polymer and an amide from an alkanolamine and a C14-C30 fatty acid |
| JP2005500407A (en) * | 2001-06-23 | 2005-01-06 | ペップメーラー，ラインマール | Composition containing mineral substance and sponge-structured water-absorbing anionic polymer, and production method and use thereof |
| WO2017100329A1 (en) * | 2015-12-08 | 2017-06-15 | Kemira Oyj | Inverse emulsion compositions |
| CN107189008A (en) * | 2017-06-16 | 2017-09-22 | 江苏富淼科技股份有限公司 | A kind of lower molecular weight amphiprotic polyacrylamide and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US7329705B2 (en) * | 2005-05-03 | 2008-02-12 | Celanese International Corporation | Salt-sensitive binder compositions with N-alkyl acrylamide and fibrous articles incorporating same |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2005500407A (en) * | 2001-06-23 | 2005-01-06 | ペップメーラー，ラインマール | Composition containing mineral substance and sponge-structured water-absorbing anionic polymer, and production method and use thereof |
| EP1426032A2 (en) * | 2002-12-06 | 2004-06-09 | L'oreal | Oxidative dyeing composition for keratinic fibres comprising a non oxyalkylenated fatty alcohol, an oxidation dye, an associative polymer and an amide from an alkanolamine and a C14-C30 fatty acid |
| WO2017100329A1 (en) * | 2015-12-08 | 2017-06-15 | Kemira Oyj | Inverse emulsion compositions |
| CN107189008A (en) * | 2017-06-16 | 2017-09-22 | 江苏富淼科技股份有限公司 | A kind of lower molecular weight amphiprotic polyacrylamide and preparation method thereof |
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