CN112322084A - Artistic coating with ecological effect in field and garden and preparation method thereof - Google Patents

Abstract

The invention relates to an art coating, which comprises straw stalks, straw chaff, a self-made dispersing agent, a filler, quartz sand and cement, wherein the preparation method of the self-made dispersing agent comprises the following steps: s1, soaking straw powder in alkali liquor, and then centrifuging, washing and drying to obtain a product A; s2, soaking the product A in concentrated sulfuric acid, adding sodium nitrate and potassium permanganate into the concentrated sulfuric acid, stirring the mixture at the temperature of 40-50 ℃, adding hydrogen peroxide and centrifuging the mixture to obtain a product B; and S3, drying and grinding the product B to obtain the self-made dispersing agent. The artistic coating is coated on the surface of a matrix, and has the ecological artistic effect of a field; meanwhile, the coating has the effects of environmental protection, difficult deformation, powder falling, peeling and scrubbing resistance.

Description

Artistic coating with ecological effect in field and garden and preparation method thereof

Technical Field

The invention belongs to the field of coatings, and particularly relates to an artistic coating and a preparation method thereof.

Background

Along with the development of times, the urbanization speed is greatly accelerated, and the house structure where people live is also changed from a wooden building to a reinforced concrete building. Some consumers still have the experience of returning to nature. Some buildings and related decorative products with a pastoral style theme are therefore produced. These buildings and related decorative products are found primarily in specialty scenic spots, ecological ancient rural villages, farmhouse dining rooms, famous people's homes, and large parks. However, the wall surfaces of these buildings are made of multipurpose soil, which has poor firmness after being blown by wind and rain, and is easy to collapse and seep water. Therefore, it is desired that the coating material coated on the soil substrate has protective and decorative functions, and can improve the fatal defects that the soil substrate is easy to deform and collapse when meeting water while retaining the particularly emotional ecological effect of the fields and gardens. At present, the coating is mainly emulsion paint, the single-thin texture of the coating is weaker, the effect is single, and the expected ecological rural effect is difficult to achieve; when the putty or cement lime is coated on the surface of a substrate, the texture effect can be achieved, but the effects of scrubbing resistance, water resistance and the like are lacked to a certain extent, and meanwhile, the putty or cement lime is easy to fall off powder and peel off, so that the overall effect of the wall surface is influenced.

In addition, in old countries, it is often seen that farmers use the straw stalks and straw husks produced after harvesting rice for burning cooking or combustion treatment, however, with the improvement of living standard, the awareness of the country and people about environmental protection is increased, and the burning of the produced straw and husk is gradually prohibited, so that the treatment of the agricultural by-products becomes a problem of environmental management.

Therefore, it is highly desirable to find an art paint and a preparation method thereof, which can overcome the above defects at the same time.

Disclosure of Invention

In order to solve the problems, the invention adopts waste straw stalks and straw husks as one of the core raw materials and mixes the waste straw stalks and straw husks into the art coating, and the product can realize the expected artistic effect and simultaneously solve the problem that the environment is polluted by the straw stalks and the straw husks.

One purpose of the invention is to provide an artistic coating, which is realized by the following technical scheme:

an artistic paint is prepared from rice straw, rice husk, disperser, filler, quartz sand and cement

The preparation method of the self-made dispersant comprises the following steps:

s1, soaking straw powder in alkali liquor, and then centrifuging, washing and drying to obtain a product A;

s2, soaking the product A in concentrated sulfuric acid, adding nitrate and potassium permanganate into the concentrated sulfuric acid, stirring the mixture at the temperature of 40-50 ℃, adding hydrogen peroxide and centrifuging the mixture to obtain a product B;

and S3, drying and grinding the product B to obtain the self-made dispersing agent.

Further, the straw powder is prepared by crushing straw stalks and straw chaffs.

Further, the artistic coating comprises the following components in parts by mass:

further, the filler comprises heavy calcium powder and talcum powder.

Further, the auxiliary agent comprises latex powder, cellulose ether and powder pigment.

Further, the latex powder is selected from ethylene/vinyl acetate copolymer, vinyl acetate/versatic acid ethylene copolymer or acrylic acid copolymer.

Further, the particle size of the quartz sand is 70-100 meshes.

Further, the cellulose ether is selected from one or more of hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose.

Further, the powder pigment is selected from one or more of iron black pigment, iron yellow pigment and iron red pigment.

Further, the straw powder is previously sieved through a sieve of 10-20 meshes.

The invention also aims to provide a preparation method of the artistic coating, which is realized by the following technical scheme:

the preparation method of the artistic coating comprises the following steps:

s1, uniformly stirring a filler, quartz sand and cement to obtain a mixture;

s2, adding the straw stalks, the straw chaffs and the self-made dispersing agent into the mixture, and uniformly stirring to obtain the artistic coating.

The invention has the beneficial effects that:

(1) the invention uses the straw as the raw material of the product to prepare the paint with the artistic effect of the ecological effect of the field and the garden, the product has good physical property, and the storage stability is better and the transportation is convenient because the storage is powder, and harmful gases such as VOC and the like are not generated. The coating can be applied to interior and exterior wall building coatings, and can make various ecological effects in fields and gardens by utilizing the manufacturing process and the dry and wet states of the product according to various occasions. In addition, materials with certain waterproof effect such as latex powder and cement are used in the product formula, the cement reacts with water to be coagulated and hardened, the latex powder has film forming property, and a film formed by the water solution has certain waterproof effect, so that compared with soil, the product has high compactness, can be matched with a finishing product with good waterproof effect, and can enhance the quality of the whole product.

(2) The product of the invention not only meets the art pursuit of people, but also pays more attention to environmental protection. The invention relates to an artistic coating with an ecological retro effect, which has extremely important significance in the field of environmental protection, because a large amount of rice hull straws are incinerated in the field every year in China, black smoke harmful to human bodies and the environment is inevitably generated in the incineration process, the invention just utilizes the wastes in life as raw materials, utilizes the rice straw straws as carbohydrate for carbonization, and refers to a method for preparing graphene oxide from graphite powder by a Hummer's method after carbonization, so as to prepare a powder material with a large specific surface area for use as an auxiliary agent in a formula.

(3) The straw stalks and the straw grains have unique structures and functional groups similar to graphene oxide, and excellent thin film property and dispersibility, so that the coating has very important significance in coatings. The invention adopts the straw powder as the self-made dispersant of the raw material, and in the self-made dispersant, after the straw powder reacts with substances such as sodium hydroxide, concentrated sulfuric acid, potassium permanganate, hydrogen peroxide and the like, the material surface has a plurality of hydrophilic functional groups (such as hydroxyl, carboxyl, epoxy group and the like), so that the straw powder has better hydrophilicity and compatibility in the coating, and can better disperse inorganic powder pigment; the conjugated structure of the material can enable the material to be laminated and covered, so that the outer layer water is difficult to permeate, the water resistance of the material is enhanced, and the self-made dispersing agent used in the invention is used, so that the consumption of cellulose can be reduced while the leveling property and the constructability of the product are better, and the cost is saved; meanwhile, the self-made functional auxiliary agent has a certain carbon skeleton structure, so that the mechanical property of the coating can be improved to a certain degree, the coating is not easy to deform, fall off powder and peel off, and the scrubbing resistance effect is also improved.

Drawings

FIG. 1 is an appearance of the art paint of example 1 coated on a wall.

Detailed Description

In order to more clearly illustrate the technical solution of the present invention, the following examples are given. The starting materials, reactions and work-up procedures which are given in the examples are, unless otherwise stated, those which are customary on the market and are known to the person skilled in the art.

In the embodiment of the invention, the latex powder is an ethylene/vinyl acetate copolymer which is purchased from German Wake company and has the model number of 4023N.

Example 1

An artistic coating comprises the following components in parts by weight:

the preparation method of the self-made dispersant comprises the following steps:

s0. pulverizing rice straw and rice straw husk with pulverizer, sieving with 10 mesh sieve, washing with pure water for 3 times, oven drying at 60 deg.C, and storing at room temperature;

s1, soaking straw powder in 1mol/L sodium hydroxide solution, centrifuging, washing with water until the pH value is 7, and drying at 700 ℃ by using an oven to obtain a product A;

s2, soaking 50 parts of the product A in 200 parts of concentrated sulfuric acid in parts by weight, slowly adding 5 parts of sodium nitrate and 30 parts of potassium permanganate into the product A, stirring the mixture at 40 ℃ for 6 hours, and then adding hydrogen peroxide until the solution turns from black to bright yellow and no bubbles are generated. Then centrifuging at a high speed, washing the supernatant with water until the pH value of the supernatant is 7 to obtain a product B;

and S3, drying the product B at 60 ℃, and grinding to obtain the self-made dispersing agent.

The preparation method of the artistic coating comprises the following steps:

s1, uniformly stirring cement, latex powder, cellulose ether, heavy calcium carbonate, quartz sand and talcum powder in parts by weight to obtain a mixture;

s2, adding straw stalks, straw husks and self-made functional additives into the mixture according to the parts by weight, and then uniformly stirring; obtaining the dry powder coating;

and S3, adding iron yellow pigment and iron black pigment into the dry powder coating according to the mass parts.

Before construction, water (the ratio of water to art paint is 6:4, m/m) is added into the art paint, and the mixture is uniformly stirred by a steering wheel type stirrer at 60rpm, so that the paint can be used.

FIG. 1 is an appearance diagram of the artistic paint of example 1 applied to a wall, showing an excellent garden style.

Example 2

An artistic coating comprises the following components in parts by weight:

the preparation method of the self-made dispersant and the art paint is the same as that of the example 1.

Example 3

An artistic coating comprises the following components in parts by weight:

the preparation method of the self-made dispersant and the art paint is the same as that of the example 1.

Comparative example

An artistic coating serving as a comparative example comprises the following components in parts by mass:

the preparation method is the same as the step of the art paint of the example 1.

Test example

The artistic coatings obtained in examples 1 to 3 and comparative examples were subjected to water immersion resistance, washing resistance, hand feeling effect test and appearance observation.

The method for the water-resistant soaking test comprises the following steps: and soaking the sample plate with the same thickness in the same water tank, immersing the sample plate for two thirds, observing the appearance of the sample plate after soaking for 2 hours, and touching with fingers to determine whether the surface of the sample plate is soft.

The template manufacturing method comprises the following steps: coating the coating on a substrate, scraping the coating once or twice by using a scraper, drying, polishing and finishing.

The test method of the hand feeling effect comprises the following steps: and touching the surface of the test sample plate with a finger to observe whether the powder falling phenomenon exists or not.

The test method of the appearance effect comprises the following steps: and observing the surface effect of the sample plate by naked eyes.

The results of the performance test of the coatings obtained in examples 1 to 3 and comparative example are shown in Table 1.

TABLE 1 results of the Performance test of the coatings obtained in examples 1 to 3 and comparative example

As can be seen from the performance test results of the artistic paints of the above examples 1-3 and comparative examples, the artistic paints of the examples 1-3 compounded by straw stalks, straw chaffs and self-made dispersant all have better performance, mainly manifested by better water resistance and washing resistance, and stronger artistic paint effect; the water resistance test, hand effect and scrub resistance test of the comparative examples exhibited different degrees of disadvantages compared to examples 1-3.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims (10)

1. An artistic paint is characterized by comprising straw stalks, straw chaff, a self-made dispersant, a filler, quartz sand and cement, wherein

The preparation method of the self-made dispersant comprises the following steps:

s1, soaking straw powder in alkali liquor, and then centrifuging, washing and drying to obtain a product A;

s2, soaking the product A in concentrated sulfuric acid, adding nitrate and potassium permanganate into the concentrated sulfuric acid, stirring the mixture at the temperature of 40-50 ℃, adding hydrogen peroxide and centrifuging the mixture to obtain a product B;

and S3, drying and grinding the product B to obtain the self-made dispersing agent.

2. An art paint as claimed in claim 1, wherein the straw powder is prepared from straw stalk and straw husk by pulverizing.

3. The art paint as claimed in claim 1, wherein the art paint comprises the following components in parts by mass:

4. the artistic coating of claim 1, wherein the filler comprises heavy calcium powder and talc.

5. An art paint as claimed in claim 3, wherein the adjuvant includes latex powder, cellulose ether and powder pigment.

6. The artistic paint of claim 5, wherein the latex powder is selected from the group consisting of ethylene/vinyl acetate copolymer, vinyl acetate/vinyl versatate copolymer, and acrylic acid copolymer.

7. An art paint as claimed in claim 5, wherein the cellulose ether is selected from one or more of hydroxymethyl cellulose, hydroxyethyl cellulose and hydroxypropyl methyl cellulose.

8. An art paint as claimed in claim 5, wherein the powder pigment is selected from one or more of iron black pigment, iron yellow pigment and iron red pigment.

9. An art paint as claimed in claim 1 or 2, wherein the straw powder is previously sieved through a sieve of 10-20 meshes.

10. A process for the preparation of an art paint as claimed in any one of claims 1 to 9, comprising the steps of:

s1, uniformly stirring a filler, quartz sand and cement to obtain a mixture;

s2, adding the straw stalks, the straw chaffs and the self-made dispersing agent into the mixture, and uniformly stirring to obtain the artistic coating.

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