CN112552819A

CN112552819A - Water-based shell paint and preparation method thereof

Info

Publication number: CN112552819A
Application number: CN202011463834.8A
Authority: CN
Inventors: 谭毅
Original assignee: Guangdong Vit Chemical Shares Co ltd
Current assignee: Guangdong Vit Chemical Shares Co ltd
Priority date: 2020-12-10
Filing date: 2020-12-10
Publication date: 2021-03-26

Abstract

The invention discloses shell paint and a preparation method thereof, and belongs to the technical field of coatings. The shell paint comprises natural plant resin, shell powder, titanium dioxide and plant extracts; the plant extract comprises dandelion extract, lemon extract, dried orange peel extract and mugwort leaf extract. The paint composed of the components has good antirust and antibacterial properties, good weather resistance and mechanical properties, and a simple preparation method, and is suitable for industrial production.

Description

Water-based shell paint and preparation method thereof

Technical Field

The invention belongs to the technical field of coatings, and particularly relates to a water-based shell paint and a preparation method thereof.

Background

In the past, most of the coatings used in the market are oil coatings, but organic substances in the oil coatings are volatile in the using process, so that the environment is polluted and the human health is damaged. Therefore, more and more water-based coatings are available in the market at present, and the water-based coatings can effectively reduce the harm of the coatings to the environment and human bodies. However, the rust-proof and antibacterial abilities of water-based paint are inferior to those of oil-based paint, so there is a need to develop a water-based paint with good mechanical properties and rust-proof and antibacterial properties to expand the application range of water-based paint

Disclosure of Invention

The invention aims to overcome the defects of the prior art and provide the water-based shell paint which can prevent rust and resist bacteria and has excellent mechanical property and the preparation method thereof.

In order to achieve the purpose, the technical scheme adopted by the invention is as follows: an aqueous shell paint comprises natural plant resin, shell powder, titanium pigment and plant extract; the plant extract comprises dandelion extract, lemon extract, dried orange peel extract and mugwort leaf extract.

The shell powder has good effects of removing peculiar smell and purifying air; moreover, the shell powder has very strong antibacterial and bactericidal effects on escherichia coli, and also has obvious inhibition effects on salmonella and yellow glucose bacteria; moreover, the shell powder has a good water breathing function, can adjust indoor humidity, prevents the wall surface from dewing in a high humidity state, and has a certain anticorrosion effect. Titanium dioxide is commonly used in white pigments, wherein the rutile titanium dioxide is most stable, has good weather resistance and chemical stability, and is nontoxic. The plant resin is an amorphous organic substance obtained from plant secretion in nature, is environment-friendly and has no toxicity. The plant extract is also from plants in nature, and is environment-friendly and nontoxic.

The plant extract comprises dandelion extract, lemon extract, dried orange peel extract and folium artemisiae argyi extract. The applicant of the invention proves that the different plant extracts have interaction and different proportions, and have different antibacterial property and mechanical property on the shell paint through a plurality of experiments. The water-based shell paint prepared by compounding the shell powder, the titanium dioxide and the plant extract has good comprehensive performance.

Preferably, in the plant extracts, the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract is that the dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract (20-30): (5-10): (10-15): (10-15).

When the plant extracts are compounded according to the proportion, the shell paint has good antibacterial property and weather resistance, and the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract can act synergistically to improve the antibacterial property of the shell paint.

Preferably, in the plant extracts, the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract is that the dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract (24-28): (6-8): (12-14): (12-14). The applicant of the invention proves through multiple experiments that the shell paint prepared by compounding the plant extracts according to the proportion has more excellent comprehensive performance.

Preferably, in the plant extracts, the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract is that the dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract 26:7:13: 13. The applicant of the invention proves through multiple experiments that the shell paint prepared by compounding the plant extracts according to the proportion has the optimal comprehensive performance.

Preferably, the water-based shell paint comprises the following components in parts by weight: 30-50 parts of natural plant resin, 10-20 parts of shell powder, 10-20 parts of titanium dioxide and 0.1-0.5 part of plant extract. The shell powder and the plant extract can interact with each other to improve the antibacterial performance of the paint, and the titanium dioxide has good stability. The applicant of the invention proves through multiple experiments that the shell paint prepared by compounding the components in the proportion has excellent stability and antibacterial property.

Preferably, the water-based shell paint comprises the following components in parts by weight: 35-45 parts of natural plant resin, 13-17 parts of shell powder, 13-17 parts of titanium dioxide and 0.2-0.4 part of plant extract.

Preferably, the water-based shell paint comprises the following components in parts by weight: 40 parts of natural plant resin, 15 parts of shell powder, 15 parts of titanium dioxide and 0.3 part of plant extract; the titanium dioxide is rutile type titanium dioxide. The applicant of the invention confirms through multiple experiments that the shell paint prepared by compounding the components in the proportion has the optimal comprehensive performance.

Preferably, the water-based shell paint also comprises a thickening agent, a water-based polycarboxylate dispersant, a water-based nonionic wetting agent, a water-based polyether defoamer, a polyurethane film-forming agent, an acrylic film-forming agent, a mildew preventive, plant gum powder and a silver ion-containing inorganic compound.

Preferably, the water-based shell paint comprises the following components in parts by weight: 0.1-0.5 part of thickening agent, 0.3-1 part of water-based polycarboxylate dispersant, 0.2-0.5 part of water-based nonionic wetting agent, 0.1-0.3 part of water-based polyether defoamer, 2-5 parts of polyurethane film-forming agent, 2-5 parts of acrylic acid film-forming agent, 0.1-0.5 part of mildew preventive, 5-15 parts of plant glue powder and 15-20 parts of deionized water; the mass concentration of silver ions in the silver ion-containing inorganic compound in the shell paint is 10-30 mg/g.

Meanwhile, the invention also discloses a preparation method of the water-based shell paint, which comprises the following steps:

(1) uniformly stirring deionized water, a thickening agent, an aqueous polycarboxylate dispersant, an aqueous nonionic wetting agent, an aqueous polyether defoaming agent and a polyurethane film forming agent until the color is transparent to obtain a mixture A;

(2) adding titanium dioxide, shell powder and an acrylic acid film-forming agent into the mixture A, and uniformly stirring to obtain a mixture B;

(3) and adding natural plant resin, plant extract, mildew preventive, plant glue powder and inorganic compound containing silver ions into the mixture B, and uniformly stirring to obtain the water-based shell paint.

Compared with the prior art, the invention has the beneficial effects that: the water-based shell paint prepared by the formula has excellent antibacterial property, weather resistance and acid and alkali resistance; the adhesive force is strong, and the flexibility is good; the water is used as a solvent, so that the paint is odorless, nontoxic, healthy and environment-friendly, and has no burning and explosion risks. The water-based shell paint is convenient to use, quick to dry and suitable for various painting modes.

Detailed Description

To better illustrate the objects, aspects and advantages of the present invention, the present invention will be further described with reference to specific examples. (unless otherwise specified, the same weight is assigned to each part by weight in the examples and comparative examples)

Examples 1 to 5

In the embodiment of the water-based shell paint, the water-based shell paint in the embodiment 1-5 comprises the following components in parts by weight: 40 parts of natural plant resin, 15 parts of shell powder, 15 parts of rutile titanium dioxide, 0.3 part of plant extract, 0.3 part of thickening agent, 0.6 part of aqueous polycarboxylate dispersant, 0.35 part of aqueous nonionic wetting agent, 0.2 part of aqueous polyether defoamer, 3.5 parts of polyurethane film-forming agent, 3.5 parts of acrylic film-forming agent, 0.3 part of mildew preventive, 10 parts of plant glue powder and 18 parts of deionized water, wherein the mass concentration of silver ions in the aqueous shell paint is 20 mg/g. Wherein the formulation of the plant extract is shown in Table 1, and the plant extract is taken 0.3 part in actual use.

The preparation method of the water-based shell paint in the embodiment 1-5 comprises the following steps:

Comparative examples 1 to 4

Comparative examples 1 to 4 are shell paints, the preparation method is the same as in examples 1 to 5, and the formulation of the other raw materials is the same as in examples 1 to 5 except for the formulation of the plant extract. The formulation of the plant extract is shown in Table 1, and the plant extract is taken 0.3 part in actual use.

TABLE 1 formulation (parts by weight) of plant extracts in examples 1 to 5 and comparative examples 1 to 4

Examples 6 to 9

In the embodiment of the shell paint, except that the formulas of the natural plant resin, the shell powder, the titanium pigment and the plant extract are different from those of the embodiment 3, the formulas of the other raw materials of the shell paint in the embodiments 6 to 9 are the same as those of the embodiment 3, and the preparation method of the shell paint is also the same as that in the embodiments 1 to 5. The formula of the natural plant resin, shell powder, titanium dioxide and plant extract is shown in table 2.

Comparative examples 5 to 6

Comparative examples 5 to 6 are shell paints, in which the formulas of the raw materials are the same as in example 3 except that the formulas of the natural plant resin, the shell powder, the titanium dioxide and the plant extract are different from those in example 3, the preparation method is the same as in examples 1 to 5, and the formulas of the natural plant resin, the shell powder, the titanium dioxide and the plant extract are shown in table 2.

TABLE 2 proportioning tables of natural plant resin, shell powder, titanium dioxide and plant extract

Performance testing

1) Stability test

Storage stability:

the storage stability of shell paint was measured according to GB 6753.3-86, 3 parts of each of examples 1-9 and comparative examples 1-6 were taken, 10mL of each part was placed in a test tube with a cover and stored in an oven at 50 + -2 ℃ for 30 days, after that, the samples were examined for the presence of crusting, corrosion and putrefactive odor and scored, and the test results for each sample were averaged and recorded in Table 3. The scoring criteria were: none at 10, very slight at 8, slight at 6, moderate at 4, severe at 2 and severe at 0.

TABLE 3 storage stability test results

And (3) testing heat resistance:

the paint was tested for viscosity before the high temperature test, then held at 50 ℃ for 16h, and after completion, the paint was tested for viscosity 3 times for each sample, averaged, and the test results are shown in table 4.

TABLE 4 viscosity number test results

As can be seen from Table 3, the scores of examples 1-9 are all higher than those of comparative examples 1-6, which shows that the shell paint prepared by the formula provided by the invention has good storage stability; as can be seen from Table 4, the viscosity differences before and after the test of the examples 1-9 are relatively small, which indicates that the high temperature resistance is good.

2) And (3) testing the adhesive force:

the adhesion of the shell paint is tested by a circling method according to GB/T1720-1979, and the test results are shown in Table 5.

Table 5 adhesion test results

As can be seen from Table 5, the adhesion grades of the examples 1 to 9 are obviously higher than those of the comparative examples 1 to 6, which shows that the shell paint prepared by the formula provided by the invention has good adhesion.

3) Antibacterial property test

The antibacterial property of the shell lacquer (paint film) is tested by referring to GB/T21866-2008, and the tested strains are staphylococcus aureus and escherichia coli. The results of the tests for antibacterial property and antibacterial durability of examples 1 to 9 and comparative examples 1 to 6 are shown in Table 6.

Table 6 antibacterial property test results

4) Flexibility test

The flexibility of the shell paints (paint films) of the examples 1-9 is tested by referring to GB/T1731-1993, and the test results show that the paint film surface has no damage phenomena such as reticulate patterns, cracks, peeling and the like. The shell paint prepared by the method disclosed by the invention has good flexibility.

Finally, it should be noted that the above embodiments are only used for illustrating the technical solutions of the present invention and not for limiting the protection scope of the present invention, and although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions can be made on the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention.

Claims

1. The water-based shell paint is characterized by comprising natural plant resin, shell powder, titanium pigment and a plant extract; the plant extract comprises dandelion extract, lemon extract, dried orange peel extract and mugwort leaf extract.

2. The aqueous shell paint of claim 1, wherein the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract in the plant extracts is dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract (20-30): (5-10): (10-15): (10-15).

3. The aqueous shell paint of claim 2, wherein the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the artemisia leaf extract in the plant extracts is dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract (24-28): (6-8): (12-14): (12-14).

4. The aqueous shell paint of claim 3, wherein the weight ratio of the dandelion extract, the lemon extract, the tangerine peel extract and the folium artemisiae argyi extract in the plant extracts is dandelion extract: lemon extract: dried orange peel extract: folium artemisiae argyi extract 26:7:13: 13.

5. The water-based shell paint as claimed in any one of claims 1 to 4, which comprises the following components in parts by weight: 30-50 parts of natural plant resin, 10-20 parts of shell powder, 10-20 parts of titanium dioxide and 0.1-0.5 part of plant extract.

6. The water-based shell paint according to claim 5, which comprises the following components in parts by weight: 35-45 parts of natural plant resin, 13-17 parts of shell powder, 13-17 parts of titanium dioxide and 0.2-0.4 part of plant extract.

7. The water-based shell paint according to claim 6, which comprises the following components in parts by weight: 40 parts of natural plant resin, 15 parts of shell powder, 15 parts of titanium dioxide and 0.3 part of plant extract; the titanium dioxide is rutile type titanium dioxide.

8. The aqueous shell paint of claim 7 further comprising a thickener, an aqueous polycarboxylate dispersant, an aqueous nonionic wetting agent, an aqueous polyether defoamer, a polyurethane film former, an acrylic film former, a mildewcide, a vegetable gum powder, and a silver-ion containing inorganic compound.

9. The aqueous shell paint of claim 8, comprising the following components in parts by weight: 0.1-0.5 part of thickening agent, 0.3-1 part of water-based polycarboxylate dispersant, 0.2-0.5 part of water-based nonionic wetting agent, 0.1-0.3 part of water-based polyether defoamer, 2-5 parts of polyurethane film-forming agent, 2-5 parts of acrylic acid film-forming agent, 0.1-0.5 part of mildew preventive, 5-15 parts of plant glue powder and 15-20 parts of deionized water; the mass concentration of silver ions in the silver ion-containing inorganic compound in the shell paint is 10-30 mg/g.

10. The preparation method of the water-based shell paint as claimed in any one of claims 8 to 9, characterized by comprising the following steps: