CN106904876B - Oily coating based on nano shell powder - Google Patents
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- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B26/00—Compositions of mortars, concrete or artificial stone, containing only organic binders, e.g. polymer or resin concrete
- C04B26/02—Macromolecular compounds
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- C04B20/00—Use of materials as fillers for mortars, concrete or artificial stone according to more than one of groups C04B14/00 - C04B18/00 and characterised by shape or grain distribution; Treatment of materials according to more than one of the groups C04B14/00 - C04B18/00 specially adapted to enhance their filling properties in mortars, concrete or artificial stone; Expanding or defibrillating materials
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- C04B20/04—Heat treatment
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00008—Obtaining or using nanotechnology related materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/00474—Uses not provided for elsewhere in C04B2111/00
- C04B2111/00482—Coating or impregnation materials
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- C04B2111/00—Mortars, concrete or artificial stone or mixtures to prepare them, characterised by specific function, property or use
- C04B2111/20—Resistance against chemical, physical or biological attack
- C04B2111/2092—Resistance against biological degradation
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Abstract
The invention provides an oily coating based on nano shell powder, which comprises the following components in parts by weight: 70-90 parts of nano shell powder and 10-30 parts of composite glue adhesive; the nano shell powder contains 1-3 parts of titanium dioxide nano particles, 1-4 parts of tourmaline powder and 2-5 parts of palygorskite powder; the composite glue adhesive comprises the following components in parts by weight: 4-8 parts of water, 3-10 parts of polyvinyl alcohol, 0.5-1 part of carboxymethyl cellulose, 1-4 parts of titanate coupling agent, 1.5-7 parts of ethyl carbamate and 0.01-0.1 part of acetyl hydroxyproline. The invention has the beneficial effects that: the oil paint can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect.
Description
Technical Field
The invention belongs to the technical field of preparation of oily paint, and particularly relates to oily paint based on nanometer shell powder.
Background
With the continuous development of the building industry, people pay more and more attention to the appearance or interior decoration of buildings, and the building wall decoration plate has high requirements on the building quality and the decoration effect and quality of the building wall. The strength of the decorative and protective effects of the wall surface coating on the building wall surface is mainly related to the performance of the coating. In the prior art, for example, a Chinese patent with an issued publication number of CN103483966B discloses a novel antifouling self-cleaning building exterior wall coating and a preparation method thereof, and particularly relates to a surface coating with a base material of polydimethylsiloxane-b-polymethyl methacrylate heptafluoro butyl ester fluorine-silicon triblock copolymer resin. The coating has the advantages of stability, weather resistance, corrosion resistance and the like of common fluorine-silicon coatings, has a micro-nano coarse structure obtained by block polymer microphase separation, and can further improve super-hydrophobicity. The fluorine-silicon block polymer is used as a base material, pigment, auxiliary agent and solvent are added for compounding, and the pigment is screened to prepare the high-performance antifouling self-cleaning paint for the building exterior wall with different colors. However, the main component of the coating is a macromolecular synthetic compound, which is not environment-friendly and can cause pollution to the environment; the Chinese patent with the granted publication number of CN103980770B discloses a coating, which comprises the following components in parts by weight: 8-18 parts of water; 0.3 to 1 part of dispersant; 1-2 parts of a film-forming aid; 1-4 parts of a mildew-proof antibacterial agent; 0.1 to 0.5 parts of defoaming agent; 2 to 5 parts of nano antibacterial powder; 6-10 parts of nano adsorbent; 30-50 parts of nano styrene-acrylic emulsion; 5 to 9 parts of nano silicone-acrylate emulsion; 0.1 to 0.3 portion of pH regulator. In the method, the nano styrene-acrylic emulsion enables the coating to form a shielding film with poor air permeability and water tightness, so as to prevent radon from escaping, and meanwhile, the nano adsorbent can absorb radon ions, so that the escape of radon is further reduced; the interaction of the nano antibacterial powder and the mildew-proof antibacterial agent enables the coating to effectively reduce the concentration of bacteria and prevent microbial pollution; therefore, the coating has the functions of antibiosis and radon prevention. But the coating can not remove harmful gases in the air, has poor corrosion resistance and is not environment-friendly; the Chinese patent with the publication number of CN104109447B discloses an environment-friendly water-based two-component epoxy coating, which consists of a component A and a component B in a weight ratio of 4: 1; the component A comprises the following components in percentage by weight: 20-50% of aliphatic modified amine curing agent, 30-40% of water, 0.02-2% of defoaming agent, 0.5-3% of flatting agent, 1-5% of wetting dispersant, 0.2-4% of anti-sagging additive, 0.3-1.5% of adhesion promoter, 5-15% of biological environment-friendly anticorrosive filler and 10-20% of body filler; the component B comprises the following components in percentage by weight: 65-80% of epoxy resin and 20-35% of reactive epoxy diluent. The coating has high curing speed at low temperature, can meet the requirements of the field of corrosion prevention, and more importantly has environmental protection and no toxicity. However, the paint has no bactericidal effect and cannot remove harmful substances in the air. The three coatings have high preparation cost, can only be used for inner walls or outer walls, and the economic benefit needs to be improved.
Disclosure of Invention
The invention aims to provide the oily coating which is based on the nano shell powder, can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect.
The scheme adopted by the invention aiming at the technical problems is as follows:
1) pretreatment: soaking a certain amount of shell in 0.5-1% hydrochloric acid, nitric acid or sulfuric acid at the acid leaching temperature of 25-35 ℃ for 1.5-3 h, performing suction filtration by using a Buchner funnel, soaking the shell obtained by suction filtration in 0.3-0.8% sodium hydroxide or potassium hydroxide solution at the alkali leaching temperature of 25-35 ℃ for 0.5-2 h, filtering after the alkali leaching is finished, drying in an oven at the drying temperature of 70-90 ℃, crushing the shell into shell powder by using a crusher, and sieving with a 200-400-mesh sieve. The acid leaching and the alkali leaching can effectively remove organic matter and inorganic matter stains on the surface of the shell, and the capability of adsorbing harmful gas in the air and the decontamination capability of the coating prepared by the acid leaching and the alkali leaching are enhanced;
2) degreasing and desalting: and adding the obtained shell powder into a degreasing agent for degreasing, wherein the solid-liquid ratio of the shell powder to the degreasing agent is 1: 2-1: 4, the temperature is 60-80 ℃, the reaction time is 20-40 min, and the stirring speed is 200-400 r/min. The saponification reaction is adopted for degreasing, so that the operation is simple, effective and environment-friendly; the degreasing agent can form micelles with the sodium salt of the higher fatty acid generated by saponification, so that the solubility of the sodium salt of the higher fatty acid in water is increased, and the degreasing efficiency is improved. And after degreasing, separating by using a pear-shaped separating funnel to remove an oil layer, filtering, adding distilled water according to a solid-to-liquid ratio of 1: 3-1: 5, uniformly stirring, desalting by using ion exchange resin, and filtering. The ion exchange resin has high desalting rate and high desalting efficiency, and the used ion exchange resin can be repeatedly used after being activated;
3) activation, high-temperature calcination and puffing: activating the obtained shell powder: the method is placed in an electrothermal blowing drying oven for low-temperature presintering activation, the temperature is 70-95 ℃, water is evaporated, the shell powder is fully dehydrated and then is calcined in a muffle furnace at high temperature, the temperature is 600-1000 ℃, the shell powder is puffed at high temperature, the specific surface area is increased, a large number of uniform holes are formed, the holes have good adsorption performance on harmful gas and part of microorganisms, the decontamination and odor removal capabilities are strong, the alkalinity is enhanced after the shell powder is activated, and the sterilization capability is strong. And preparing a micro-nano shell framework material, namely nano shell powder, by using a hole transformation technology. The nanometer shell powder is easy to color, can be prepared into coatings of any color, and is not easy to decolor in the scrubbing process;
4) preparing an oil paint: the oily paint comprises the following components in parts by weight: 70-90 parts of nano shell powder and 10-30 parts of composite glue adhesive; the nano shell powder contains 1-3 parts of titanium dioxide nano particles, 1-4 parts of tourmaline powder and 2-5 parts of palygorskite powder; the composite glue adhesive comprises the following components in parts by weight: 4-8 parts of water, 3-10 parts of polyvinyl alcohol, 0.5-1 part of carboxymethyl cellulose, 1-4 parts of titanate coupling agent, 1.5-7 parts of ethyl carbamate and 0.01-0.1 part of acetyl hydroxyproline. The prepared oil paint can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect.
The degreasing agent comprises the following components in parts by weight: 5-8 parts of potassium carbonate, 6-10 parts of potassium phosphate, 0.2-0.5 part of potassium silicate, 30-50 parts of distilled water, 3-5 parts of polyacrylamide emulsion, 1-3 parts of acetamide and 1-2 parts of magnesium sulfate. Can rapidly carry out saponification reaction with grease in shell powder, and can form micelles with higher fatty acid sodium salt generated by saponification, thereby increasing the solubility of the higher fatty acid sodium salt in water and improving the degreasing efficiency.
Compared with the prior art, the invention has the advantages that: the shell powder is puffed at high temperature, the specific surface area is increased, a large number of uniform holes are formed, the holes have good adsorption performance on harmful gases and part of microorganisms, the decontamination and odor removal capabilities are strong, the alkalinity of the shell powder is enhanced after activation, and the sterilization capability is strong; the nanometer shell powder is easy to color, can be prepared into coatings of any color, and is not easy to decolor in the scrubbing process; degreasing agents used for degreasing: 5-8 parts of potassium carbonate, 6-10 parts of potassium phosphate, 0.2-0.5 part of potassium silicate, 30-50 parts of distilled water, 3-5 parts of polyacrylamide emulsion, 1-3 parts of acetamide and 1-2 parts of magnesium sulfate. Can rapidly carry out saponification reaction with grease in shell powder, and can form micelles with higher fatty acid sodium salt generated by saponification, so that the solubility of the higher fatty acid sodium salt in water is increased, and the degreasing efficiency is improved; the oily paint comprises the following components in parts by weight: 70-90 parts of nano shell powder and 10-30 parts of a composite glue adhesive, wherein the nano shell powder contains 1-3 parts of titanium dioxide nano particles, 1-4 parts of tourmaline powder and 2-5 parts of palygorskite powder, and the composite glue adhesive comprises the following components in parts by weight: 4-8 parts of water, 3-10 parts of polyvinyl alcohol, 0.5-1 part of carboxymethyl cellulose, 1-4 parts of titanate coupling agent, 1.5-7 parts of ethyl carbamate and 0.01-0.1 part of acetyl hydroxyproline. The prepared oil paint can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect. The oil paint based on the nano shell powder has the advantages of simple preparation process, low raw material price and high economic benefit, and can be produced in an industrial manner.
DETAILED DESCRIPTION OF EMBODIMENT (S) OF INVENTION
The scheme of the invention is further illustrated by the following specific examples:
example 1:
an oily coating based on nano shell powder comprises the following specific steps:
1) pretreatment: soaking a certain amount of shell in 0.5-1% hydrochloric acid, nitric acid or sulfuric acid at the acid leaching temperature of 25-35 ℃ for 1.5-3 h, performing suction filtration by using a Buchner funnel, soaking the shell obtained by suction filtration in 0.3-0.8% sodium hydroxide or potassium hydroxide solution at the alkali leaching temperature of 25-35 ℃ for 0.5-2 h, filtering after the alkali leaching is finished, drying in an oven at the drying temperature of 70-90 ℃, crushing the shell into shell powder by using a crusher, and sieving with a 200-400-mesh sieve. The acid leaching and the alkali leaching can effectively remove organic matter and inorganic matter stains on the surface of the shell, and the capability of adsorbing harmful gas in the air and the decontamination capability of the coating prepared by the acid leaching and the alkali leaching are enhanced;
2) degreasing and desalting: and adding the obtained shell powder into a degreasing agent for degreasing, wherein the solid-liquid ratio of the shell powder to the degreasing agent is 1: 2-1: 4, the temperature is 60-80 ℃, the reaction time is 20-40 min, and the stirring speed is 200-400 r/min. The saponification reaction is adopted for degreasing, so that the operation is simple, effective and environment-friendly; the degreasing agent can form micelles with the sodium salt of the higher fatty acid generated by saponification, so that the solubility of the sodium salt of the higher fatty acid in water is increased, and the degreasing efficiency is improved. And after degreasing, separating by using a pear-shaped separating funnel to remove an oil layer, filtering, adding distilled water according to a solid-to-liquid ratio of 1: 3-1: 5, uniformly stirring, desalting by using ion exchange resin, and filtering. The ion exchange resin has high desalting rate and high desalting efficiency, and the used ion exchange resin can be repeatedly used after being activated;
3) activation, high-temperature calcination and puffing: activating the obtained shell powder: the method is placed in an electrothermal blowing drying oven for low-temperature presintering activation, the temperature is 70-95 ℃, water is evaporated, the shell powder is fully dehydrated and then is calcined in a muffle furnace at high temperature, the temperature is 600-1000 ℃, the shell powder is puffed at high temperature, the specific surface area is increased, a large number of uniform holes are formed, the holes have good adsorption performance on harmful gas and part of microorganisms, the decontamination and odor removal capabilities are strong, the alkalinity is enhanced after the shell powder is activated, and the sterilization capability is strong. And preparing a micro-nano shell framework material, namely nano shell powder, by using a hole transformation technology. The nanometer shell powder is easy to color, can be prepared into coatings of any color, and is not easy to decolor in the scrubbing process;
4) preparing an oil paint: the oily paint comprises the following components in parts by weight: 70-90 parts of nano shell powder and 10-30 parts of composite glue adhesive; the nano shell powder contains 1-3 parts of titanium dioxide nano particles, 1-4 parts of tourmaline powder and 2-5 parts of palygorskite powder; the composite glue adhesive comprises the following components in parts by weight: 4-8 parts of water, 3-10 parts of polyvinyl alcohol, 0.5-1 part of carboxymethyl cellulose, 1-4 parts of titanate coupling agent, 1.5-7 parts of ethyl carbamate and 0.01-0.1 part of acetyl hydroxyproline. The prepared oil paint can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect.
The degreasing agent comprises the following components in parts by weight: 5-8 parts of potassium carbonate, 6-10 parts of potassium phosphate, 0.2-0.5 part of potassium silicate, 30-50 parts of distilled water, 3-5 parts of polyacrylamide emulsion, 1-3 parts of acetamide and 1-2 parts of magnesium sulfate. Can rapidly carry out saponification reaction with grease in shell powder, and can form micelles with higher fatty acid sodium salt generated by saponification, thereby increasing the solubility of the higher fatty acid sodium salt in water and improving the degreasing efficiency.
Example 2:
the most preferable steps of the nano shell powder-based oil paint are as follows:
1) pretreatment: taking 70 parts by weight of shell, soaking in 500mL of 1% hydrochloric acid, wherein the acid leaching temperature is 30 ℃, the acid leaching time is 2.5 hours, carrying out suction filtration by using a Buchner funnel, soaking the shell obtained by suction filtration in 0.5% potassium hydroxide solution, wherein the alkali leaching temperature is 35 ℃, the alkali leaching time is 1 hour, filtering after the alkali leaching is finished, drying in an oven, wherein the drying temperature is 85 ℃, and then crushing the shell into shell powder by using a crusher, and sieving the shell powder by using a 250-mesh sieve. The acid leaching and the alkali leaching can effectively remove organic matter and inorganic matter stains on the surface of the shell, and the capability of adsorbing harmful gas in the air and the decontamination capability of the coating prepared by the acid leaching and the alkali leaching are enhanced;
2) degreasing and desalting: and adding the obtained shell powder into a degreasing agent for degreasing, wherein the solid-liquid ratio of the shell powder to the degreasing agent is 1:3, the temperature is 70 ℃, the reaction time is 30min, and the stirring speed is 400 r/min. The saponification reaction is adopted for degreasing, so that the operation is simple, effective and environment-friendly; the degreasing agent can form micelles with the sodium salt of the higher fatty acid generated by saponification, so that the solubility of the sodium salt of the higher fatty acid in water is increased, and the degreasing efficiency is improved. Separating with pear-shaped separating funnel after degreasing to remove oil layer, filtering, adding distilled water according to solid-to-liquid ratio of 1:3, stirring well, desalting with ion exchange resin, and filtering. The ion exchange resin has high desalting rate and high desalting efficiency, and the used ion exchange resin can be repeatedly used after being activated;
3) activation, high-temperature calcination and puffing: activating the obtained shell powder: the material is placed in an electric heating forced air drying oven for low-temperature presintering activation, the temperature is 80 ℃, water is evaporated, the material is fully dehydrated and then is calcined in a muffle furnace at high temperature, the temperature is 700 ℃, the shell powder is puffed at high temperature, the specific surface area is increased, a large number of uniform holes are formed, the holes have good adsorption performance on harmful gases and part of microorganisms, the decontamination and odor removal capabilities are strong, the alkalinity is enhanced after the shell powder is activated, and the sterilization capability is strong. And preparing a micro-nano shell framework material, namely nano shell powder, by using a hole transformation technology. The nanometer shell powder is easy to color, can be prepared into coatings of any color, and is not easy to decolor in the scrubbing process;
4) preparing an oil paint: the oily paint comprises the following components in parts by weight: 80 parts of nano shell powder and 20 parts of composite glue adhesive; the nano shell powder contains 3 parts of titanium dioxide nano particles, 2 parts of tourmaline powder and 5 parts of palygorskite powder; the composite glue adhesive comprises the following components in parts by weight: 6 parts of water, 5 parts of polyvinyl alcohol, 0.7 part of carboxymethyl cellulose, 3 parts of titanate coupling agent, 5.3 parts of ethyl carbamate and 0.01 part of acetyl hydroxyproline, wherein the ethyl carbamate and the acetyl hydroxyproline produce unexpected effects through the titanate coupling agent and have the effect of inhibiting bacterial reproduction, so that a better sterilization effect is achieved, and the adsorption performance is improved to a certain extent. The prepared oil paint can effectively adsorb and remove harmful gases in air, can decontaminate and remove peculiar smell, is safe, nontoxic, environment-friendly, strong in corrosion resistance, strong in adhesive force, uniform in dispersion, easy to color and has a sterilization effect.
The degreasing agent comprises the following components in parts by weight: 5-8 parts of potassium carbonate, 6-10 parts of potassium phosphate, 0.2-0.5 part of potassium silicate, 30-50 parts of distilled water, 3-5 parts of polyacrylamide emulsion, 1-3 parts of acetamide and 1-2 parts of magnesium sulfate. Can rapidly carry out saponification reaction with grease in shell powder, and can form micelles with higher fatty acid sodium salt generated by saponification, thereby increasing the solubility of the higher fatty acid sodium salt in water and improving the degreasing efficiency.
The above embodiments are merely illustrative, and not restrictive, and those skilled in the art can make various changes and modifications without departing from the spirit and scope of the invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the protection scope of the present invention should be defined by the claims.
Claims (6)
1. An oil paint based on nanometer shell powder is characterized in that: the oily paint comprises the following components in parts by weight: 80 parts of nano shell powder and 20 parts of composite glue adhesive; the nano shell powder contains 3 parts of titanium dioxide nano particles, 2 parts of tourmaline powder and 5 parts of palygorskite powder; the composite glue adhesive comprises the following components in parts by weight: 6 parts of water, 5 parts of polyvinyl alcohol, 0.7 part of carboxymethyl cellulose, 3 parts of titanate coupling agent, 5.3 parts of ethyl carbamate and 0.01 part of acetyl hydroxyproline;
the preparation method of the oil paint comprises the following steps:
1) pretreatment: taking a certain amount of shells, performing acid leaching, alkali leaching, filtering, drying and crushing;
2) degreasing and desalting: adding the obtained shell powder into a degreasing agent for degreasing, separating by using a pear-shaped separating funnel after degreasing to remove an oil layer, filtering, adding distilled water according to a solid-to-liquid ratio of 1: 3-1: 5, desalting, and filtering, wherein the degreasing agent comprises the following components in parts by weight: 5-8 parts of potassium carbonate, 6-10 parts of potassium phosphate, 0.2-0.5 part of potassium silicate, 30-50 parts of distilled water, 3-5 parts of polyacrylamide emulsion, 1-3 parts of acetamide and 1-2 parts of magnesium sulfate;
3) activation, high-temperature calcination and puffing: activating the obtained shell powder: presintering the shell powder at a low temperature to evaporate water, sufficiently dehydrating the shell powder, calcining the shell powder at a high temperature, and grinding the shell powder to obtain a micro-nano shell framework material, namely nano shell powder; the activation is to activate the shell powder in an electrothermal blowing dry box at the temperature of 70-95 ℃;
4) preparing an oil paint: adding 3 parts of titanium dioxide nano particles, 2 parts of tourmaline powder and 5 parts of palygorskite powder into nano shell powder, uniformly stirring, adding 6 parts of water, 5 parts of polyvinyl alcohol, 0.7 part of carboxymethyl cellulose, 3 parts of titanate coupling agent, 5.3 parts of ethyl carbamate and 0.01 part of acetyl hydroxyproline, and uniformly mixing to obtain the oily coating.
2. The nano shell powder-based oil paint according to claim 1, characterized in that: in the step 1, 0.5-1% hydrochloric acid, nitric acid or sulfuric acid is adopted for acid leaching, the acid leaching temperature is 25-35 ℃, and the acid leaching time is 1.5-3 h.
3. The nano shell powder-based oil paint according to claim 1, characterized in that: in the step 1, 0.3-0.8% sodium hydroxide or potassium hydroxide solution is adopted for alkaline leaching, the alkaline leaching temperature is 25-35 ℃, and the alkaline leaching time is 0.5-2 h.
4. The nano shell powder-based oil paint according to claim 1, characterized in that: and in the step 2, ion exchange resin is adopted for desalting.
5. The nano shell powder-based oil paint according to claim 1, characterized in that: and 3, calcining at high temperature in a muffle furnace at 600-1000 ℃.
6. The nano shell powder-based oil paint according to claim 1, characterized in that: the degreasing condition in the step 2 is that the solid-liquid ratio of the shell powder to the degreasing agent is 1: 2-1: 4, the temperature is 60-80 ℃, the reaction time is 20-40 min, and the stirring speed is 200-400 r/min.
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| CN104046212A (en) * | 2014-05-14 | 2014-09-17 | 阜阳市美叶家具有限公司 | Acid and alkali resistant heat dissipation coating |
| CN104877808A (en) * | 2015-06-26 | 2015-09-02 | 浙江海洋学院 | Method for preparing aquatic product cleaning agent based on shell powder |
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