CN115704191A - Moisture-proof coating liquid, preparation method and corrugated case - Google Patents
Moisture-proof coating liquid, preparation method and corrugated case Download PDFInfo
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Abstract
The invention provides a moisture-proof coating liquid, a preparation method and a corrugated case, wherein the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-59% of dispersion liquid, 12-25% of stearic acid, 29-50% of polydimethylsiloxane, and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts forThe modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-3% of silane coupling agent and nano SiO 2 5-20% of particles and the balance of water. The solution can reduce the surface tension of the coating, enhance the adhesive force between the coating and the substrate, improve the adhesive force and the wear resistance of the coating, and solve the moisture-proof problem of the carton.
Description
Technical Field
The invention belongs to the technical field of moisture-proof packaging, and particularly relates to a moisture-proof coating liquid, a preparation method and a corrugated case.
Background
With the continuous promotion of 'replacing plastic with paper' in the industry, the advantages of the corrugated case are gradually revealed, and the corrugated case is low in cost, rich in resources, recyclable and easy to degrade, and becomes a green packaging material with great prospect increasingly. However, since the main components of the paperboard are cellulose and hemicellulose, the surface of the paperboard contains a large amount of hydrophilic hydroxyl groups, so that the paperboard is easily affected with moisture during the actual use process and loses the original functions. Therefore, it is necessary to modify the moisture resistance and hydrophobicity of the corrugated box.
Disclosure of Invention
The invention aims to provide a moisture-proof coating liquid, a preparation method and a corrugated case, and aims to solve the problem that the existing case is weak in moisture-proof function.
The invention is realized by the fact that the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-59% of dispersion liquid, 12-25% of stearic acid, 29-50% of polydimethylsiloxane, and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-3% of silane coupling agent and nano SiO 2 5-20% of particles and the balance of water.
The invention further adopts the technical scheme that: the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-50% of dispersion liquid, 12-20% of stearic acid, 29-45% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-2.5% of silane coupling agent and nano SiO 2 5-15% of particles and the balance of water.
The further technical scheme of the invention is as follows: the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 30-59% of dispersion liquid, 16-25% of stearic acid, 35-50% of polydimethylsiloxane and the balance of polydimethylsiloxaneWater, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1.5-3% of silane coupling agent and nano SiO 2 8-20% of particles and the balance of water.
The invention further adopts the technical scheme that: the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 32-48% of dispersion liquid, 18-23% of stearic acid, 32-43% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 2-3% of silane coupling agent and nano SiO 2 7-18% of particles and the balance of water.
Another object of the present invention is to provide a method for preparing a moisture-proof coating liquid, comprising the steps of:
step S1: mixing nano SiO 2 Dispersing the particles in absolute ethyl alcohol, and magnetically stirring at normal temperature to obtain the nano SiO 2 Adding a silane coupling agent into a mixed solution of absolute ethyl alcohol and deionized water, standing at room temperature, and hydrolyzing to obtain an alcohol-water solution of the silane coupling agent;
step S2: dropwise adding the alcohol-water solution of the silane coupling agent prepared in the step S1 into the nano SiO 2 Magnetically stirring the particles in an alcohol solution under heating to obtain the modified nano SiO 2 Dispersing, drying after the reaction, and grinding into nano SiO 2 Powder is used for later use;
and step S3: stearic acid and the nano SiO prepared in the step S2 2 Dispersing the powder in absolute ethyl alcohol, adding polydimethylsiloxane after uniformly stirring, and stirring under a heating condition to obtain the moisture-proof coating liquid.
The further technical scheme of the invention is as follows: in the step S1, nano SiO is prepared 2 Alcoholic solution of particles, nano SiO 2 The amount of the particles is 1-3 parts, and the absolute ethyl alcoholThe dosage of (2) is 60mL to 100mL; when the alcohol-water solution of the silane coupling agent is prepared, the using amount of the silane coupling agent is 0.05-0.15 parts, and the volume ratio of absolute ethyl alcohol to deionized water in the alcohol-water mixed solution is 9:1.
the further technical scheme of the invention is as follows: in the step S1, the magnetic stirring speed is 3000r/min, the stirring time is 0.5 to 2.5 hours, and the standing hydrolysis time is 0.5 to 1h.
The further technical scheme of the invention is as follows: in step S2, preparing the modified nano SiO 2 And in the dispersion, the heating temperature is set to be 40-75 ℃, and the reaction time is set to be 1-6 h.
The further technical scheme of the invention is as follows: in the step S3, stearic acid and nano SiO 2 The dosage ratio of the powder is 1:1 to 1:10 of polydimethylsiloxane and nano SiO 2 The mass ratio of the powder is 2:1 to 1: 2; the stirring time is 0.5h to 2h, and the temperature is 40 ℃ to 60 ℃.
The invention also aims to provide a corrugated case for coating the moisture-proof coating liquid, which is characterized in that a corrugated board is cut into A4 size, the corrugated board is placed on a coating plate of a vacuum adsorption coating machine, the moisture-proof coating liquid is uniformly coated on the surface of a base material of the corrugated board by matching with a wire rod, a plurality of corrugated boards are combined into the corrugated case after drying and curing, wherein the specification of the wire rod is 10-30 mu m, and the coating weight is controlled to be 2g/m 2 ~8g/m 2 (ii) a The drying and curing temperature is 60-120 ℃, and the time is 0.5h to 2h.
The invention has the beneficial effects that: according to the invention, stearic acid with a hydrophobic alkyl chain is used as a substance for providing low surface energy, the surface tension of the coating is reduced, nano silicon dioxide particles are selected to improve the surface roughness of the coating, and polydimethylsiloxane is selected to enhance the bonding performance between the coating and a packaging carton while providing low surface energy, improve the mechanical durability, improve the adhesive force and wear resistance of the coating, and solve the moisture-proof problem of the carton.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments.
The invention provides a damp-proof coating liquid which comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-59% of dispersion liquid, 12-25% of stearic acid, 29-50% of polydimethylsiloxane, and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-3% of silane coupling agent and nano SiO 2 5-20% of particles and the balance of water.
Preferably, the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-50% of dispersion liquid, 12-20% of stearic acid, 29-45% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-2.5% of silane coupling agent and nano SiO 2 5-15% of particles and the balance of water.
Preferably, the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 30-59% of dispersion liquid, 16-25% of stearic acid, 35-50% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1.5-3% of silane coupling agent and nano SiO 2 8-20% of particles and the balance of water.
Preferably, the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 32-48% of dispersion liquid, 18-23% of stearic acid, 32-43% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 2-3% of silane coupling agent and nano SiO 2 7-18% of particles and the balance of water.
The invention also provides a preparation method of the moisture-proof coating liquid, which comprises the following steps:
step S1: mixing nano SiO 2 Dispersing the particles in absolute ethyl alcohol, and magnetically stirring at normal temperature to obtain the nano SiO 2 Adding a silane coupling agent into a mixed solution of absolute ethyl alcohol and deionized water, standing at room temperature, and hydrolyzing to obtain an alcohol-water solution of the silane coupling agent;
step S2: dropwise adding the alcohol-water solution of the silane coupling agent prepared in the step S1 into the nano SiO 2 Magnetically stirring the particles in an alcohol solution under heating to obtain the modified nano SiO 2 Dispersing, drying after the reaction, and grinding into nano SiO 2 Powder is used for later use;
and step S3: stearic acid and the nano SiO prepared in the step S2 2 Dispersing the powder in absolute ethyl alcohol, adding polydimethylsiloxane after uniformly stirring, and stirring under a heating condition to obtain the moisture-proof coating liquid.
Preferably, in the step S1, nano SiO is prepared 2 Alcoholic solution of particles, nano SiO 2 The dosage of the particles is 1-3 parts, and the dosage of the absolute ethyl alcohol is 60mL-100mL; when the alcohol-water solution of the silane coupling agent is prepared, the using amount of the silane coupling agent is 0.05-0.15 parts, and the volume ratio of absolute ethyl alcohol to deionized water in the alcohol-water mixed solution is 9:1.
preferentially, in the step S1, the speed of magnetic stirring is 3000r/min, the stirring time is 0.5h to 2.5h, and the standing hydrolysis time is 0.5h to 1h.
Preferentially, the modified nano SiO is prepared 2 And in the dispersion, the heating temperature is set to be 40-75 ℃, and the reaction time is set to be 1-6 h.
Preferably, in the step S3, stearic acid and nano SiO are mixed 2 The using ratio of the powder is 1:1 to 1:10 of polydimethylsiloxane and nano-SiO 2 The mass ratio of the powder is 2:1 to 1: 2; the stirring time is 0.5h to 2h, and the temperature is 40 ℃ to 60 ℃.
The invention also provides a corrugated case for coating the moisture-proof coating liquid, the corrugated case is cut into A4 size, the corrugated case is placed on a coating plate of a vacuum adsorption coating machine, the moisture-proof coating liquid is uniformly coated on the surface of a base material of the corrugated case by matching with a wire rod, a plurality of corrugated cases are combined into the corrugated case after drying and curing, the specification of the wire rod is 10-30 mu m, and the coating weight is controlled to be 2g/m 2 ~8g/m 2 (ii) a The drying and curing temperature is 60-120 ℃, and the drying and curing time is 0.5h to 2h.
The invention provides a damp-proof coating liquid which comprises modified nano SiO 2 Dispersion, stearic acid and polydimethylsiloxane, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 The invention relates to a particle, which is characterized in that a super-hydrophobic solution is prepared by combining a low-surface-energy substance and a nano material capable of constructing surface roughness, and the super-hydrophobic solution is applied to a corrugated case in a coating mode, wherein stearic acid is a low-surface-energy substance with a hydrophobic long alkyl chain and can reduce the surface tension of a coating; the nano SiO 2 The particles are beneficial to forming a rough structure on the surface of the coating; the molecular adhesive is introduced to the polydimethylsiloxane, so that the adhesive force between the coating and the substrate can be enhanced, and the adhesive force and the wear resistance of the coating are improved. The raw materials for preparing the moisture-proof package have low cost, the method is simple, complex equipment and conditions are not needed, the moisture-proof package can be prepared by a printing and glazing process, all prepared solutions are aqueous systems, negative effects on the environment and human health are avoided, and the moisture-proof package can be popularized to large-scale production. In the present invention, the silane coupling agent is preferably γ -methacryloxypropyltrimethoxysilane (KH 570).
The following will describe, by way of examples, the process for preparing the moisture-proof coating liquid provided by the present invention, and the process for manufacturing a corrugated case coated with the moisture-proof coating liquid.
The first embodiment is as follows:
first, 1g of nano SiO 2 Dispersing the particles in 60mL of absolute ethyl alcohol, and magnetically stirring for 1h at normal temperature to prepare the nano SiO 2 An alcoholic solution of the particles; simultaneously adding 0.05gKH570 into a mixed system of 18mL absolute ethyl alcohol and 2mL deionized water, standing at room temperature for hydrolysis for 0.5h to prepare an alcohol-water solution of KH 570;
then, the alcohol aqueous solution of KH570 is added into the nano SiO dropwise 2 Magnetically stirring the particles in an alcoholic solution at 60 ℃ for 4 hours to prepare the modified nano SiO 2 Dispersing, drying after the reaction, and grinding into nano SiO 2 Powder is used for later use;
then, 0.5g of stearic acid and 0.5g of nano SiO 2 Dispersing the powder in absolute ethyl alcohol, adding 0.25g of polydimethylsiloxane after uniformly stirring, and magnetically stirring for 2 hours at 60 ℃ to obtain a damp-proof coating liquid;
and finally, cutting the BC pit corrugated board into A4 size, placing the BC pit corrugated board on a coating panel of a vacuum adsorption coating machine, and adsorbing the paper board on a coating table under the action of a vacuum pump to fix the paper board. Taking a 10 μm wire rod, clamping into fixing grooves at two ends of the instrument, mounting, and coating once moisture-proof coating liquid on the paperboard at a coating speed of 300mm/min, wherein the coating weight is 4g/m 2 The coated paper board is placed in a vacuum drying box, dried for 0.5h at 60 ℃, cured for 1h at 100 ℃, and combined into a corrugated case by a plurality of corrugated paper boards after drying and curing.
The second embodiment:
first, 2g of nano SiO 2 Dispersing the particles in 80mL of absolute ethyl alcohol, and magnetically stirring for 1h at normal temperature to prepare the nano SiO 2 An alcoholic solution of the particles; simultaneously adding 0.1gKH570 into a mixed system of 18mL of absolute ethyl alcohol and 2mL of deionized water, standing at room temperature for hydrolysis for 1h to prepare an alcohol-water solution of KH 570;
then, adding aqueous solution of KH570 alcohol into nano SiO dropwise 2 Magnetically stirring the particles in an alcoholic solution at 60 ℃ for 3 hours to prepare the modified nano SiO 2 Dispersing, drying after the reaction, grinding into nano SiO 2 Powder is used for later use;
then, 0.25g stearic acid and 0.5g nano SiO 2 Dispersing the powder in anhydrous ethanol, stirring, and adding 0.5g of polydimethylSiloxane, and magnetically stirring for 1h at 50 ℃ to obtain the moisture-proof coating liquid;
and finally, cutting the BC pit corrugated board into A4 size, placing the BC pit corrugated board on a coating panel of a vacuum adsorption coating machine, and adsorbing the paper board on a coating table under the action of a vacuum pump to fix the paper board. Taking a 20 μm wire rod, clamping into fixing grooves at two ends of the instrument, mounting, and coating once damp-proof coating liquid on the paperboard at a coating speed of 500mm/min, wherein the coating weight is 2g/m 2 The coated paper board is placed in a vacuum drying oven, dried at 60 ℃ for 1h, cured at 120 ℃ for 1h, and a plurality of corrugated paper boards are combined into a corrugated paper box after drying and curing.
Example three:
first, 3g of nano SiO 2 Dispersing the particles in 120mL of absolute ethyl alcohol, magnetically stirring for 1h at normal temperature to prepare nano SiO 2 An alcoholic solution of the particles; simultaneously adding 0.15gKH570 into a mixed system of 18mL of absolute ethyl alcohol and 2mL of deionized water, standing at room temperature for hydrolysis for 1h to prepare an alcohol-water solution of KH 570;
then, the alcohol aqueous solution of KH570 is added into the nano SiO dropwise 2 Magnetically stirring the particles in an alcoholic solution at 60 ℃ for 2 hours to prepare the modified nano SiO 2 Dispersing, drying after the reaction, and grinding into nano SiO 2 Powder is used for later use;
then, 0.2g of stearic acid and 1g of nano SiO 2 Dispersing the powder in absolute ethyl alcohol, adding 2g of polydimethylsiloxane after uniform stirring, and magnetically stirring for 2 hours at 60 ℃ to obtain a damp-proof coating liquid;
and finally, cutting the BC pit corrugated board into A4 size, placing the BC pit corrugated board on a coating panel of a vacuum adsorption coating machine, adsorbing the corrugated board on a coating table under the action of a vacuum pump, and fixing the corrugated board. Taking a 30 μm wire rod, clamping into fixing grooves at two ends of the instrument, mounting, and coating the paperboard with one-time moisture-proof coating liquid at a coating speed of 600mm/min, wherein the coating weight is 8g/m 2 The coated paper board is placed in a vacuum drying box, dried at 80 ℃ for 1h and cured at 120 ℃ for 1.5h, and a plurality of corrugated paper boards are combined into a corrugated paper box after drying and curing.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit and principle of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. The moisture-proof coating liquid is characterized by comprising modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-59% of dispersion liquid, 12-25% of stearic acid, 29-50% of polydimethylsiloxane, and the balance of water, wherein the modified nano SiO is 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-3% of silane coupling agent and nano SiO 2 5-20% of particles and the balance of water.
2. The moisture-proof coating liquid as claimed in claim 1, wherein the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 25-50% of dispersion liquid, 12-20% of stearic acid, 29-45% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1-2.5% of silane coupling agent and nano SiO 2 5-15% of particles and the balance of water.
3. The moisture-proof coating liquid as claimed in claim 1, wherein the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 30-59% of dispersion liquid, 16-25% of stearic acid, 35-50% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles of each componentOccupies the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 1.5-3% of silane coupling agent and nano SiO 2 8-20% of particles and the balance of water.
4. The moisture-proof coating liquid as claimed in claim 1, wherein the moisture-proof coating liquid comprises modified nano SiO 2 The dispersing agent, stearic acid and polydimethylsiloxane comprise the following components in percentage by weight of the total solution: modified nano SiO 2 32-48% of dispersion liquid, 18-23% of stearic acid, 32-43% of polydimethylsiloxane and the balance of water, wherein the modified nano SiO 2 The dispersion liquid comprises a silane coupling agent and nano SiO 2 Particles, each component of which accounts for the modified nano SiO 2 The weight percentage of the dispersion liquid is as follows: 2-3% of silane coupling agent and nano SiO 2 7-18% of particles and the balance of water.
5. A process for preparing the moisture-proof coating liquid as defined in any one of claims 1 to 4, which comprises the steps of:
step S1: mixing nano SiO 2 Dispersing the particles in absolute ethyl alcohol, and magnetically stirring at normal temperature to obtain the nano SiO 2 Adding a silane coupling agent into a mixed solution of absolute ethyl alcohol and deionized water, standing at room temperature, and hydrolyzing to obtain an alcohol-water solution of the silane coupling agent;
step S2: dropwise adding the alcohol-water solution of the silane coupling agent prepared in the step S1 into the nano SiO 2 Magnetically stirring the particles in an alcohol solution under heating to obtain the modified nano SiO 2 Dispersing, drying after the reaction, and grinding into nano SiO 2 Powder is used for later use;
and step S3: stearic acid and the nano SiO prepared in the step S2 2 Dispersing the powder in absolute ethyl alcohol, adding polydimethylsiloxane after uniformly stirring, and stirring under a heating condition to obtain the moisture-proof coating liquid.
6. The process for preparing a moisture-proof coating liquid as claimed in claim 5, whereinIn the step S1, nano SiO is prepared 2 Alcoholic solution of particles, nano SiO 2 The dosage of the particles is 1-3 parts, and the dosage of the absolute ethyl alcohol is 60mL-100mL; when the alcohol-water solution of the silane coupling agent is prepared, the using amount of the silane coupling agent is 0.05-0.15 parts, and the volume ratio of absolute ethyl alcohol to deionized water in the alcohol-water mixed solution is 9:1.
7. the preparation method of the moisture-proof coating liquid as claimed in claim 6, wherein in the step S1, the magnetic stirring speed is 3000r/min, the stirring time is 0.5h to 2.5h, and the standing hydrolysis time is 0.5h to 1h.
8. The method for preparing the moisture-proof coating liquid as claimed in claim 5, wherein the modified nano SiO is prepared in step S2 2 In the dispersion, the heating temperature is set to be 40-75 ℃, and the reaction time is set to be 1-6 h.
9. The method for preparing a moisture-proof coating liquid as defined in claim 5, wherein in the step S3, stearic acid and SiO nanoparticles are mixed 2 The using ratio of the powder is 1:1 to 1:10 of polydimethylsiloxane and nano SiO 2 The mass ratio of the powder is 2:1 to 1: 2; the stirring time is 0.5h to 2h, and the temperature is 40 ℃ to 60 ℃.
10. A corrugated case coated with the moisture-proof coating liquid as defined in any one of claims 1 to 4, wherein a corrugated cardboard is cut into A4 size, placed on a coating plate of a vacuum adsorption coating machine, coated uniformly on the surface of a corrugated cardboard substrate with a wire bar having a gauge of 10 to 30 μm, dried and cured, and then a plurality of corrugated cardboards are combined into a corrugated case, wherein the coating amount is controlled to be 2g/m 2 ~8g/m 2 (ii) a The drying and curing temperature is 60-120 ℃, and the time is 0.5h to 2h.
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| CN110669363A (en) * | 2019-10-18 | 2020-01-10 | 东莞深圳清华大学研究院创新中心 | Preparation method of transparent super-hydrophobic coating |
| CN112029362A (en) * | 2020-08-21 | 2020-12-04 | 帝斯曼先达合成树脂(佛山)有限公司 | Preparation method of core-shell structure nano particles and hardened water-based acrylic resin coating |
| CN112592650A (en) * | 2020-12-11 | 2021-04-02 | 美盈森集团股份有限公司 | Folding-resistant wear-resistant water-based anti-scraping matt oil and preparation method thereof |
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