CN112266636A - Development and preparation method of antiviral water-based inorganic coating - Google Patents

Abstract

The invention belongs to the field of water-based inorganic coatings for indoor decoration in the field of new water-based coating materials. When the coating is used as a decorative protective coating, the coating can be crosslinked and cured at normal temperature, the formed coating has good wear resistance and anti-friction performance, water is used as a dispersion medium, organic volatile matters are few, and the coating has a fireproof protection function in home decoration and public entertainment places and is friendly to human bodies and environment. The paint has the advantages of fire prevention, high temperature resistance, antibiosis, ventilation, durability, alkali resistance, high hardness, self-cleaning, static resistance, chemical acid rain resistance, excellent adhesive force and environmental protection.

Description

Development and preparation method of antiviral water-based inorganic coating

Technical Field

The invention belongs to the field of water-based inorganic coatings for indoor decoration in the field of new water-based coating materials. When the coating is used as a decorative protective coating, the coating can be crosslinked and cured at normal temperature, the formed coating has good wear resistance and anti-friction performance, water is used as a dispersion medium, organic volatile matters are few, and the coating has a fireproof protection function in home decoration and public entertainment places and is friendly to human bodies and environment. The paint has the advantages of fire resistance, high temperature resistance, antibiosis, ventilation, durability, alkali resistance, high hardness, self-cleaning, static resistance, chemical acid rain resistance and excellent adhesive force, and belongs to green environment-friendly paint.

Background

The recent new coronavirus epidemic situation has the risk of wide spread in the world, causes death and panic of some people in countries all over the world, and brings huge loss to the world economy. The organic coating mainly takes compounds extracted from organic matters as main raw materials, has no durability, is easy to fall off, is easy to generate chemical reaction with external environment, and has great waste on petroleum resources.

In order to overcome the defects of the prior art, the inorganic silicate compound resin is used, the inorganic silicate resin can well permeate into the base layer to generate petrochemical reaction with the base material, and a thin coating is brushed to obtain a thick coating. The water is used as a solvent, no cosolvent is used, the product is more environment-friendly, and the compounded inorganic resin and the nano zinc oxide are combined to further have the effects of purifying air, sterilizing and inhibiting bacteria. The inorganic coating is high temperature resistant, and the fire-proof grade can reach A-grade standard. The paint film has good air permeability, durability, alkali resistance, high hardness, self-cleaning, antistatic property, chemical acid rain resistance, excellent adhesive force and environmental protection.

Disclosure of Invention

The technical scheme of the invention is as follows:

10 to 18% of water

10-18% of 2.5% cellulose solution

0.1 to 0.5% of defoaming agent

10-25 parts of rutile type titanium dioxide

Organic silicon multifunctional 0.8-1.2

0.2-0.5% of nano zinc oxide

10-25 parts of calcium carbonate

18 to 30 parts of inorganic silicate resin

3-10 parts of toughening agent

In order to realize the technical scheme of the invention, the inorganic silicate compound resin is used, the inorganic silicate resin can well permeate into the base layer to generate petrochemical reaction with the base material, and a thin coating is brushed to obtain a thick coating film. The water is used as a solvent, no cosolvent is used, the product is more environment-friendly, and the compounded inorganic resin and the nano zinc oxide are combined to further have the effects of purifying air, sterilizing and inhibiting bacteria. The inorganic coating is high temperature resistant, and the fire-proof grade can reach A-grade standard. The paint film has good air permeability, durability, alkali resistance, high hardness, self-cleaning, antistatic property, chemical acid rain resistance, excellent adhesive force and environmental protection.

The invention is an antiviral environment-friendly water-based inorganic coating, water is used as a dispersion medium, no cosolvent is needed in the production and application processes, the quantity of organic volatile matters and harmful substances can be reduced, and the environment-friendly requirement is met. Inorganic silicate resin (alkali metal silicate and nano colloidal silica) is used as a main film forming substance. Because the water-based inorganic silicate resin has good permeability to the cement base material and can have silicification reaction with the cement base material, the inorganic coating can be better integrated with the base material, and the durability of a paint film is formed. The product is natural and environment-friendly, and the fire-proof grade of the coating after film forming can reach A-grade fire-proof and flame-retardant. The antiviral inorganic paint mainly uses inorganic silicate resin as a film forming substance, and has rich resources. The paint film has good air permeability, sterilization, durability, alkali resistance, high hardness, self-cleaning, antistatic property, chemical acid rain resistance, excellent adhesive force and environmental protection. The added nano zinc oxide has the effects of weather purification, sterilization and bacteriostasis. Thereby improving the human living environment and the quality of life.

The invention has the advantages that: the antiviral water-based inorganic coating has strong adaptability, is suitable for all mineral substance substrates, and can reinforce capillary cracks and loose inorganic substance surfaces. Secondly, the permeability is good, when the inorganic coating is constructed, the silicate or nano silica sol permeates into the base layer for 0.5-2 mm along with moisture and is subjected to chemical combination reaction with a mineral substance substrate to form alkali-resistant and acid-resistant silica, so that the inorganic coating and the substrate are firmly combined into a whole. And the product is environment-friendly, energy-saving, mildew-proof and flame-retardant, and meets the requirements of safety and environmental protection. The fire-proof grade can reach A-grade standard. The paint film has good air permeability, durability, alkali resistance, high hardness, self-cleaning, antistatic property, chemical acid rain resistance, excellent adhesive force and environmental protection.

The specific implementation mode is as follows:

water: 10 to 18

2.5% cellulose solution: 10 to 18

Defoaming agent: 0.1 to 0.5

Rutile type titanium dioxide: 10 to 25

Organic silicon is multifunctional: 0.8 to 1.2

Nano zinc oxide: 0.2 to 0.5

Calcium carbonate: 10 to 25

Inorganic silicate resin: 18 to 30

A toughening agent: 3 to 10

A preparation method of an antiviral water-based inorganic coating comprises the following steps:

(1) putting the needed water into a cylinder, starting a high-speed dispersion machine at a low speed, and slowly adding the needed cosolvent;

(2) after the cosolvent is uniformly dispersed, adding pigments and fillers in sequence, and dispersing at a high speed to 40 um;

(3) adding the emulsion, water and cosolvent at medium and low speed, and stirring uniformly;

(4) and (5) filtering, weighing and packaging after the detection is qualified.

The first embodiment is as follows:

the antiviral water-based inorganic coating comprises the following components in percentage by mass:

water: 15 percent of

2.5% cellulose solution: 18 percent of

Rutile type titanium dioxide: 15 percent of

Nano zinc oxide: 0.2 percent of

Calcium carbonate: 25 percent of

Inorganic silicate resin: 20 percent of

A toughening agent: 5 percent of

Other auxiliary agents: 1.8 percent

Example two:

the antiviral water-based inorganic coating comprises the following components in percentage by mass:

water: 12.7 percent

2.5% cellulose solution: 18 percent of

Rutile type titanium dioxide: 20 percent of

Nano zinc oxide: 0.3 percent of

Calcium carbonate: 20 percent of

Inorganic silicate resin: 22 percent

A toughening agent: 5 percent of

Other auxiliary agents: 2 percent of

Example three:

the antiviral water-based inorganic coating comprises the following components in percentage by mass:

water: 9 percent of

2.5% cellulose solution: 18 percent of

Rutile type titanium dioxide: 25 percent of

Nano zinc oxide: 0.5 percent

Calcium carbonate: 15 percent of

Inorganic silicate resin: 25 percent of

A toughening agent: 5 percent of

Other auxiliary agents: 2.5 percent

The coating process related to the above examples is roller coating of one inorganic transparent primer and two antiviral water-based inorganic paints.

The main performance detection indexes are as follows:

serial number	Item	Example 1/example 2/example 3
			1	State in the vessel	No caking after stirring and uniform state
2	Workability	Brush coating two times without obstacle
			3	Paint film appearance	Is normal
4	Drying time (surface dry)/h	≤2
			5	Water resistance	No abnormal condition for 96h
6	Alkali resistance	No abnormal condition for 96h
			7	Coating temperature resistance (5 cycles)	No abnormality
8	Washing and brushing resistance/times	≥5000 ≥10000 ≥20000
			9	Contrast ratio (white and light color)	≥0.93 ≥0.95 ≥0.97

The invention has the advantages that:

the antiviral water-based inorganic coating has strong adaptability, is suitable for all mineral substance substrates, and can reinforce capillary cracks and loose inorganic substance surfaces. Secondly, the permeability is good, when the inorganic coating is constructed, the silicate or nano silica sol permeates into the base layer for 0.5-2 mm along with moisture and is subjected to chemical combination reaction with a mineral substance substrate to form alkali-resistant and acid-resistant silica, so that the inorganic coating and the substrate are firmly combined into a whole. And the product is environment-friendly, energy-saving, mildew-proof and flame-retardant, and meets the requirements of safety and environmental protection. The fire-proof grade can reach A-grade standard. The paint film has good air permeability, durability, alkali resistance, high hardness, self-cleaning, antistatic property, chemical acid rain resistance, excellent adhesive force and environmental protection.

The embodiments of the present invention are described only for the preferred embodiments of the present invention, and not for the limitation of the concept and scope of the present invention, and various modifications and improvements made to the technical solution of the present invention by those skilled in the art without departing from the design concept of the present invention shall fall into the protection scope of the present invention, and the technical content of the present invention which is claimed is fully set forth in the claims.

Claims (2)

1. The invention discloses an antiviral water-based inorganic coating which comprises the following components in parts by weight:

10-18 parts of clean water, namely,

10-18% of cellulose solution (2.5%),

0.1 to 0.5% of a defoaming agent,

0.8 to 1.2 of organic silicon multifunctional,

15-25 parts of titanium dioxide powder,

10-25 parts of calcium carbonate,

0.2 to 0.5 percent of nano zinc oxide,

18 to 30 parts of an inorganic silicate resin,

3-10 parts of a toughening agent.

2. The method for preparing an antiviral aqueous inorganic coating according to claim 1, comprising the steps of:

(1) putting the needed water into a cylinder, starting a high-speed dispersion machine at a low speed, and slowly adding the needed cosolvent;

(2) after the cosolvent is uniformly dispersed, adding pigments and fillers in sequence, and dispersing at a high speed to 40 um;

(3) adding the emulsion, water and cosolvent at medium and low speed, and stirring uniformly;

(4) and (5) filtering, weighing and packaging after the detection is qualified.