Method for creating water-based acrylic resin coating with high water resistance

Abstract

The present disclosure relates to the technical field of water-based acrylic resin coatings, in particular to a method for creating a water-based acrylic resin coating with high water resistance. It includes the following steps: selecting a commercially available water-based acrylic resin paint; mixing the water-based acrylic resin paint and ethyl acetate to obtain solution A, spraying solution A on a surface of a material or immersing the material in solution A, and then solidifying; mixing lye and a silver precursor solution to obtain solution B; immersing the cured material in solution B and then drying the cured material.

Claims

1. A method for creating a water-based acrylic resin coating with high water resistance, comprising the following steps: a, selecting a commercially available water-based acrylic resin paint; b, mixing the water-based acrylic resin paint and ethyl acetate to obtain solution A, spraying solution A on a surface of a material or immersing the material in solution A, and then curing; c, mixing lye and a silver precursor solution to obtain solution B; immersing the cured material in solution B and then drying the cured material.

2. The method for creating a water-based acrylic resin coating with high water resistance according to claim 1, further comprising the following step d: mixing stearic acid, acetic acid and absolute ethanol to obtain solution C; immersing the material after dried in step c in solution C, and drying the material.

3. The method for creating a water-based acrylic resin coating with high water resistance according to claim 1, wherein: in step b, pre-treating the material before spraying: immersing the material in an ethanol solution, and processing with ultrasonic treatment for 20-30 minutes, then drying the material.

4. The method for creating a water-based acrylic resin coating with high water resistance according to claim 1, wherein: in step b, using infrared drying at 70-95° C. firstly, and then curing.

5. The method for creating a water-based acrylic resin coating with high water resistance according to claim 4, wherein multi-stage infrared drying at conditions of 70-78° C., 78-85° C., and 85-95° C. in sequence is adopted.

6. The method for creating a water-based acrylic resin coating with high water resistance according to claim 4, wherein: multi-stage curing at conditions of UV light curing with 3000-4000 W, 6000-8000 W, and 3000-4000 W in sequence is adopted.

7. The method for creating a water-based acrylic resin coating with high water resistance according to claim 1, wherein: in step c, drying is performed at 95-105° C. after immersing for 5-10 minutes.

8. The method for creating a water-based acrylic resin coating with high water resistance according to claim 2, wherein: in step d, immersing is performed for 45-60 minutes.

9. The method for creating a water-based acrylic resin coating with high water resistance according to claim 1, wherein: a preparation method of the solution A is: dropping 1 part of ethyl acetate into 3-5 parts of water-based acrylic resin paint according to the mass ratio, stirring for 30-40 minutes.

10. The method for creating a water-based acrylic resin coating with high water resistance according to claim 2, wherein the solution C contains 10 parts of absolute ethanol, 2.5-3.5 parts of acetic acid and 0.5-1.5 parts of stearic acid according to parts by mass.

Description

DESCRIPTION OF EMBODIMENTS

(1) The following are specific implementations of the present disclosure and are used to further describe the technical solutions of the present disclosure, but the present disclosure is not limited to these embodiments.

Example 1 (Exp. 1)

(2) A method for creating a water-based acrylic resin coating with high water resistance may include the following steps:

(3) a. selecting any commercially available water-based acrylic resin paint: selecting a water-based acrylic resin paint that meets the “HGT 4758-2014 Waterborne Acrylic Resin Paint Industry Standard”. The material may be cotton fabric.

(4) b. dropping 1 part of ethyl acetate into 4 parts of water-based acrylic resin paint according to the mass ratio, and then stirring for 35 minutes to obtain solution A.

(5) The solution A may be coated on the surface of the material with a 50 μm wet film preparer, and then the material may be placed in an infrared drying box with an infrared ceramic heating tube installed at the bottom of the box. The temperature may be set to 80° C. and drying may be carried out for 10 minutes. The material may be then placed in a UV curing box. Three UV tubes may be installed on the top of the box. Each tube may have a rated power of 7000 W, and the curing may be completed at 7000 W.

(6) c. mixing 0.1 mol/L sodium hydroxide and silver nitrate solution to obtain solution B; immersing the cured material in solution B for 8 minutes, and then drying at 100° C., to obtain a water-based acrylic resin coating material with high water resistance.

(7) A contact angle tester may be adopted to test the wettability of the coating surface on the prepared material, and the results are shown in Table 1.

Example 2 (Exp. 2)

(8) The present example is basically the same as Example 1, and the difference is only:

(9) In this example, the following step d may be further included: mixing 1 part of stearic acid, 3 parts of acetic acid and 10 parts of absolute ethanol according to parts by mass, to obtain solution C; immersing the dried material in step c in solution C for immersed for 50 minutes, and then drying, to obtain a water-based acrylic resin coating material with high water resistance.

(10) A contact angle tester may be used to test the wettability of the coating surface on the prepared material, and the results are shown in Table 1.

Example 3 (Exp. 3)

(11) This example is basically the same as Example 2, and the only difference is:

(12) In this example, in step b, before spraying, the material needs to be pre-treated: immersing the material in a 70% ethanol solution, ultrasonically treating for 25 minutes, and then drying; then coating solution A on the material.

(13) A contact angle tester may be used to test the wettability of the coating surface on the prepared material, and the results are shown in Table 1.

Example 4 (Exp. 4)

(14) This example is basically the same as Example 3, and the only difference is:

(15) In this example, in step b, a conveyor belt may be set, and an infrared drying device and a UV curing device may be sequentially set along the conveying direction of the conveyor belt. Among them, the infrared drying device adopts three infrared drying ovens connected in series, and the temperature may be set to 75° C., 80° C., and 90° C. in sequence along the conveying direction of the conveyor belt. There may be 3 UV lamps in the UV curing box along the conveying direction of the conveyor belt. Each lamp may have a rated power of 7000 W. Each UV lamp may have an independent power control. The power may be adjusted to 3500 W, 7000 W, and 3500 W along the conveying direction of the conveyor belt. The material may be placed on the conveyor belt of the production line, and the conveyor belt drives the material to pass through the infrared drying device and the UV curing device at a speed of 0.5 m/s to complete the drying and curing.

Example 5 (Exp. 5)

(16) A method for creating a water-based acrylic resin coating with high water resistance may include the following steps:

(17) a. selecting any commercially available water-based acrylic resin paint: selecting a water-based acrylic resin paint that meets the “HGT 4758-2014 Waterborne Acrylic Resin Coating Industry Standard”. The material may be wood-plastic composite board.

(18) b. immersing the material in a 50% ethanol solution, ultrasonically treating for 20 minutes, and then drying.

(19) According to the mass ratio, 1 part of ethyl acetate may be dropped into 3 parts of the water-based acrylic resin paint, and stirring may be carried out for 30 minutes to obtain solution A.

(20) The material may be immersed in solution A for 30 minutes and then taken out.

(21) A conveyor belt may be provided, and an infrared drying device and a UV curing device may be sequentially arranged along the conveying direction of the conveyor belt. Among them, the infrared drying device may adopt three infrared drying ovens connected in series, and the temperature may be set to 70° C., 78° C., and 85° C. in sequence along the conveying direction of the conveyor belt. There may be 3 UV lamps in the UV curing box along the conveying direction of the conveyor belt. Each lamp may have a rated power of 6000 W. Each UV lamp may have an independent power control. The power may be adjusted to 3000 W, 6000 W, and 4000 W along the conveying direction of the conveyor belt. The material may be placed on the conveyor belt of the production line, and the transmission belt drives the material to pass through the infrared drying device and the UV curing device at a speed of 0.2 m/s to complete the drying and curing.

(22) c. mixing 0.1 mol/L sodium hydroxide and silver nitrate solution to obtain solution B; immersing the cured material in solution B for 5 minutes, and then drying at 95° C.

(23) d. mixing 0.5 parts of stearic acid, 2.5 parts of acetic acid and 10 parts of absolute ethanol according to parts by mass to obtain solution C; the dried material in step c may be immersed in solution C for 45 minutes and then dried. A water-based acrylic resin coating material with high water resistance may be obtained.

(24) A contact angle tester may be used to test the wettability of the coating surface on the prepared material, and the results are shown in Table 1.

Example 6 (Exp. 6)

(25) A method for creating a water-based acrylic resin coating with high water resistance may include the following steps:

(26) a. selecting any commercially available water-based acrylic resin paint: selecting a water-based acrylic resin paint that meets the “HGT 4758-2014 Waterborne Acrylic Resin Coating Industry Standard”. The material may be solid wood board.

(27) b. immersing the material in a 30% ethanol solution, ultrasonically treating for 30 minutes, and then drying.

(28) According to the mass ratio, 1 part of ethyl acetate may be dropped into 5 parts of water-based acrylic resin paint, stirred for 40 minutes, to obtain solution A.

(29) The material may be immersed in solution A for 30 minutes and taken out.

(30) A conveyor belt may be provided, and an infrared drying device and a UV curing device may be sequentially arranged along the conveying direction of the conveyor belt. Among them, the infrared drying device may adopt three infrared drying ovens connected in series, and the temperature may be set to 78° C., 85° C., and 95° C. in sequence along the conveying direction of the conveyor belt. There may be 3 UV lamps in the UV curing box along the conveying direction of the conveyor belt. Each lamp may have a rated power of 8000 W. Each UV lamp may have an independent power control. The power may be adjusted to 4000 W, 8000 W, and 3000 W along the conveying direction of the conveyor belt. The material may be placed on the conveyor belt of the production line, and the conveyor belt drives the material to pass through the infrared drying device and the UV curing device at a speed of 1.2 m/s to complete the drying and curing.

(31) c, mixing 0.1 mol/L sodium hydroxide and silver nitrate solution to obtain solution B; immersing the cured material in solution B for 10 minutes, and then drying at 105° C.

(32) d, mixing 1.5 parts of stearic acid, 3.5 parts of acetic acid and 10 parts of absolute ethanol according to parts by mass to obtain solution C. The dried material in step c may be immersed in solution C for 60 minutes and then dried. A water-based acrylic resin coating material with high water resistance may be obtained.

(33) A contact angle tester may be used to test the wettability of the coating surface on the prepared material, and the results are shown in Table 1.

Comparative Example 1 (Cmp. Exp. 1)

(34) The water-based acrylic resin coating selected in Example 1 was directly coated on the surface of the cotton fabric with a 50 μm wet film preparer, and then the cotton fabric was dried and cured by the method of Example 1. The wettability of the coating surface was tested with a contact angle tester on the cotton fabric obtained by drying and curing. The results are shown in Table 1 below.

Comparative Example 2 (Cmp. Exp. 2)

(35) This comparative example is basically the same as Example 1, and the only difference is that: without adding sodium hydroxide and silver nitrate solution (that is, without performing step c), directly testing the dried and cured material in step b with a contact angle tester of the wettability of the coating surface, the results are shown in Table 1.

Comparative Example 3 (Cmp. Exp. 3)

(36) This comparative example is basically the same as Example 1, with the only difference being: in step b, no ethyl acetate is added. The water-based acrylic resin paint selected in Example 1 was directly coated on the surface of the material with a 50 m wet film preparer, and then the material was dried and cured by the method of Example 1. Step c is performed on the material obtained by drying and curing, and the wettability of the coating surface of the obtained material is tested with a contact angle tester. The results are shown in Table 1 below.

Comparative Example 4 (Cmp. Exp. 4)

(37) This comparative example is basically the same as Example 2, with the only difference being: in step b, no ethyl acetate is added. The obtained material was tested for the wettability of the coating surface with a contact angle tester. The results are shown in Table 1 below.

(38) TABLE-US-00001 TABLE 1 Water-based Pre-treat Drying and Exp. acrylic Ethyl NaOH and Stearic to curing step Contact group paint acetate AgNO3 acid material by step angle Exp. 1 ✓ ✓ ✓ (158 ± 1)° Exp. 2 ✓ ✓ ✓ ✓ (168 ± 1)° Exp. 3 ✓ ✓ ✓ ✓ ✓ (169 ± 1)° Exp. 4 ✓ ✓ ✓ ✓ ✓ ✓ (170 ± 1)° Exp. 5 ✓ ✓ ✓ ✓ ✓ ✓ (169 ± 1)° Exp. 6 ✓ ✓ ✓ ✓ ✓ ✓ (169 ± 1)° Cmp. Exp. 1 ✓  (72 ± 1)° Cmp. Exp. 2 ✓ ✓  (72 ± 1)° Cmp. Exp. 3 ✓ ✓  (81 ± 1)° Cmp. Exp. 4 ✓ ✓ ✓ (164 ± 1)°

(39) As shown in Table 1, by comparing the contact angle test data of Example 1, Comparative Example 1, Comparative Example 2, and Comparative Example 3, it can be seen that in the present disclosure, the technical means of indirectly constructing silver oxide with lye and silver precursors under the condition of ethyl acetate can effectively increase the contact angle of the coating with water, thereby improving the water resistance of the coating. By comparing Example 2 and Comparative Example 4, it can be seen that although the contact angle of the coating can be increased to a certain extent by the preparation of silver stearate in the traditional technology, the contact angle can be further increased under the action of ethyl acetate, which greatly improves the water resistance of the coating.

(40) The specific embodiments described herein are merely illustrative of the spirit of the present disclosure. Those skilled in the art to which the present disclosure belongs can make various modifications or additions to the specific embodiments described or use similar alternatives, but they will not deviate from the spirit of the present disclosure or exceed the definition range of the appended claims.