CN112624724A - Inorganic water-based paint and preparation method thereof - Google Patents
Inorganic water-based paint and preparation method thereof Download PDFInfo
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Abstract
The invention belongs to an inorganic water-based paint and a preparation method thereof in the field of environmental protection. The composition comprises the following components in percentage by mass: 20-24% of potassium silicate, 1-3% of modified bentonite formaldehyde adsorbent, 2-3% of tetrapod-like zinc oxide whisker, 1-3% of modified sepiolite, 16-20% of titanium dioxide, 20-27% of heavy calcium powder, 0-2% of montmorillonite-loaded acrylic acid, 0-3% of bentonite inorganic gel, 0-7% of glass powder, 0-1% of cellulose, 0-2% of odorless emulsion, 0-0.4% of 2-imidazolidinone, 0-0.6% of hydrophobic reinforcing agent and 20-30% of water. The invention adopts potassium silicate as a main film forming substance, and the tetrapod-like zinc oxide whisker, the modified bentonite formaldehyde adsorbent, the modified sepiolite and the like are compounded, so that the prepared inorganic water-based paint has high purification efficiency, good purification durability, no toxicity or harm and no pollution.
Description
Technical Field
The invention belongs to the field of environmental protection, and particularly relates to an inorganic water-based paint and a preparation method thereof.
Background
The data of the national professional statistical bureau show that: at present, 80% of air pollution caused by national interior decoration comes from excessive formaldehyde, therefore, people have carried out a lot of researches on the aspect of air purification and developed various materials with the air purification function, such as CN100467554 and CN102964932B, the two inventions mainly add tetrapod-shaped zinc oxide whiskers, adsorption materials, acrylate emulsion and the like into emulsion paint, and film forming substances of the two inventions are acrylate emulsion, so that the film forming substances have toxicity and carcinogenicity and are not good in air permeability, and the added tetrapod-shaped zinc oxide whiskers and the adsorption materials cannot fully play the purification function. CN201910016665.4 uses silica sol, potassium silicate and modified nano titanium dioxide/diatomite, because nano titanium dioxide only depends on photocatalysis formaldehyde, the work can be stopped under the condition of no light source at night, and the evaluation report and the experimental principle prove that: the nano titanium dioxide has carcinogenicity on laboratory animals and is likely to cause carcinogenesis of human bodies (the possibility is 2B grade). Therefore, the prior art can not radically and durably solve the problem of continuous formaldehyde pollution caused by indoor decoration.
Disclosure of Invention
The invention aims to overcome the defects of low air pollution purification capacity and poor durability brought by the existing interior wall coating for interior decoration, and provides an inorganic water-based coating with high purification efficiency, good purification durability, no toxicity or harm and no pollution for people and a preparation method thereof.
The object of the present invention is achieved by the following means.
The inorganic water-based paint is characterized by comprising the following components in percentage by mass:
20-24% of potassium silicate, 1-3% of modified bentonite formaldehyde adsorbent, 2-3% of tetrapod-like zinc oxide whisker, 1-3% of modified sepiolite, 16-20% of titanium dioxide, 20-27% of heavy calcium powder, 0-2% of montmorillonite-loaded acrylic acid, 0-3% of bentonite inorganic gel, 0-7% of glass powder, 0-1% of cellulose, 0-2% of odorless emulsion, 0-0.4% of 2-imidazolidinone, 0-0.6% of hydrophobic reinforcing agent and 20-30% of water.
In the scheme, the modified bentonite formaldehyde adsorbent is obtained by heating bentonite in sulfuric acid or hydrochloric acid.
In the scheme, the modified bentonite formaldehyde adsorbent is prepared by heating bentonite in sulfuric acid or hydrochloric acid and then performing microwave radiation.
In the scheme, the modified bentonite formaldehyde adsorbent is prepared according to Chinese patent application 201610244147.4.
In the scheme, the tetrapod-like zinc oxide whisker is prepared by mixing 70% of zinc particles and 30% of bentonite by mass and firing the mixture in a high-temperature furnace at a high temperature.
In the scheme, the modified sepiolite is obtained by crushing sepiolite, acidizing and roasting at 200-300 ℃.
In the scheme, the montmorillonite-loaded acrylic acid is prepared by purifying bentonite, heating the bentonite in sulfuric acid or hydrochloric acid for reaction, drying the bentonite, performing alkalization modification on the bentonite, and adding acrylic acid for reaction modification.
In the scheme, the bentonite inorganic gel is prepared by mixing bentonite and sodium fluoride or sodium carbonate according to the mass ratio of 24:1, reacting for 5 days, drying and reacting with magnesium oxide.
In the scheme, the preparation method of the inorganic water-based paint comprises the following steps:
stirring and mixing potassium silicate, a modified bentonite formaldehyde adsorbent, tetrapod-like zinc oxide whiskers, modified sepiolite, montmorillonite-loaded acrylic acid and water to obtain a mixed solution; adding titanium dioxide, coarse whiting powder, cellulose and bentonite inorganic gel into the mixed solution under stirring to obtain a mixed material; adding the glass powder, the odor-free emulsion, the 2-imidazolidinone and the hydrophobic reinforcing agent into the mixture under stirring, and stirring for 1 hour to obtain the inorganic water-based paint.
The invention is a scientific and practical technical scheme summarized by the inventor through years of practice, and the potassium silicate is used as a main film forming substance, so that the coating has the characteristics of no toxicity, no pollution and excellent air permeability. Experiments show that the four-needle zinc oxide whisker alone can decompose formaldehyde, but the 24-hour formaldehyde removal rate is only 23.9%. The formaldehyde removal rate of the single modified bentonite formaldehyde adsorbent in 24 hours in the initial days is up to more than 90%, but the formaldehyde removal rate rapidly decreases after 5 days, and the formaldehyde removal rate in 24 hours in 15 days is only 8.7%, which shows that saturated adsorption is achieved and the durability of formaldehyde removal is poor. After the tetrapod-like zinc oxide whiskers and the modified bentonite formaldehyde adsorbent are fully stirred and mixed, the initial 24-hour formaldehyde removal rate is 98%, the 15-day 24-hour formaldehyde removal rate is still 96.9%, the purification efficiency is high, and the purification durability is good. The inventors found from the electron micrograph that, in the mixture of the tetrapod-like zinc oxide whiskers and the modified bentonite formaldehyde adsorbent, the size of the tetrapod-like zinc oxide whiskers was 10 micrometers or more, the particle size of the modified bentonite formaldehyde adsorbent was within 1 micrometer, and the modified bentonite formaldehyde adsorbent adhered to the tetrapod-like zinc oxide whiskers was not large, indicating that there was no direct microspur interaction between the tetrapod-like zinc oxide whiskers and the modified bentonite formaldehyde adsorbent. The experiment shows that the modified bentonite formaldehyde adsorbent has a remarkable catalytic effect on the decomposition of formaldehyde by the tetrapod-like zinc oxide whiskers, and the inventor considers that the polarity of the modified bentonite formaldehyde adsorbent greatly improves the concentration of formaldehyde in a coating through analysis, so that the reaction speed of the tetrapod-like zinc oxide whiskers on the decomposition of formaldehyde is remarkably increased. In addition, the modified bentonite formaldehyde adsorbent and the tetrapod-like zinc oxide whisker are not consumed in the formaldehyde decomposition reaction, so that the modified bentonite formaldehyde adsorbent has the capacity of long-acting environment purification. Based on the original discovery, the inventor discovers that the inorganic water-based paint prepared by compounding the tetrapod-like zinc oxide whisker and the modified bentonite formaldehyde adsorbent with potassium silicate, modified sepiolite and the like and adding the paint auxiliary agent can efficiently and durably remove organic volatile matters such as formaldehyde, toluene, xylene, TVOC and the like, has the functions of humidifying, fire prevention, flame retardation, mildew prevention, moisture prevention, air purification and the like, and has the advantages of high purification efficiency, good purification durability, no toxicity, no pollution and the like. Meanwhile, the antibacterial agent also has the characteristics of broad spectrum, high efficiency and lasting antibiosis, can efficiently kill and eliminate bacteria and remains thereof, and has extremely high killing rate on common bacteria such as staphylococcus aureus, escherichia coli, candida albicans and the like. The coating has good crack resistance and high strength.
The montmorillonite-loaded acrylic acid disclosed by the invention has the high efficiency and the fluidity of an organic thickening agent and the stability and the suspension of an inorganic thickening agent, a specific sheet structure can provide a stable rheological curve, excellent storage stability and a can opening effect, and the problems of environmental friendliness and easiness in agglomeration of directly added acrylic acid in a coating are solved. The bentonite inorganic gel has excellent spreading property and film forming property, no toxicity, no irritation, excellent gelling property, excellent thickening property and good stability.
In conclusion, the invention overcomes the defects of low air pollution purification capacity and poor durability brought by the existing interior wall coating for interior decoration, and the provided inorganic water-based coating and the preparation method thereof have high purification efficiency, good purification durability, no toxicity or harm and no pollution.
Detailed Description
The invention is further described below by means of examples, to which the invention is not limited.
Example one
The inorganic water-based paint of the embodiment comprises the following components in percentage by mass:
20% of potassium silicate, 3% of modified bentonite formaldehyde adsorbent, 3% of tetrapod-like zinc oxide whisker, 3% of modified sepiolite, 20% of titanium dioxide, 27% of heavy calcium powder, 1% of cellulose, 2% of odor-free emulsion, 0.4% of 2-imidazolidinone, 0.6% of hydrophobic reinforcing agent and 20% of water.
The preparation method of the inorganic water-based paint of the embodiment is as follows:
stirring and mixing potassium silicate, a modified bentonite formaldehyde adsorbent, tetrapod-like zinc oxide whiskers, modified sepiolite and water to obtain a mixed solution; adding titanium dioxide, coarse whiting powder and cellulose into the mixed solution under stirring to obtain a mixture; adding the odor-free emulsion, 2-imidazolidinone and the hydrophobic reinforcing agent into the mixture under stirring, and stirring for 1 hour to obtain the inorganic water-based paint.
In this example, the modified bentonite formaldehyde adsorbent was prepared according to chinese patent application 201610244147.4.
The tetrapod-like zinc oxide whisker is prepared by mixing 70% of zinc particles and 30% of bentonite by mass and firing the mixture in a high-temperature furnace at a high temperature.
The specific preparation method of the tetrapod-like zinc oxide whisker comprises the following steps:
the calcium-based bentonite ore is crushed, purified by removing impurities, and then the bentonite with the montmorillonite content of more than or equal to 75 percent (mass ratio) is selected. Zinc particles with the purity of 99 percent are selected and evenly mixed with bentonite according to the proportion, wherein the zinc particles account for 70 percent by mass, and the bentonite accounts for 30 percent by mass. And then placing the bentonite and the zinc particles which are well mixed in a muffle furnace, raising the temperature in the furnace to 990 ℃, keeping for 9min, and taking out to obtain the tetrapod-like zinc oxide whiskers.
The modified sepiolite is obtained by crushing sepiolite, acidizing and roasting at 200-300 ℃.
The preparation method of the modified sepiolite comprises the following steps:
firstly, putting the crushed and purified sepiolite into an acidification tank for acidification treatment, wherein the acidification agent is one of hydrochloric acid or sulfuric acid, and preferably hydrochloric acid. Adjusting the hydrochloric acid to 3mole/l, reacting the sepiolite with the hydrochloric acid for 14 hours, dissolving out magnesium compounds between crystal lattice layers, and then putting the sepiolite into a rotary kiln for roasting, wherein the temperature is controlled to be 200-300 ℃, and the roasting time is 50-60 minutes.
Example two
The inorganic water-based paint of the embodiment comprises the following components in percentage by mass:
24% of potassium silicate, 3% of modified bentonite formaldehyde adsorbent, 2% of tetrapod-like zinc oxide whisker, 3% of modified sepiolite, 2% of montmorillonite-loaded acrylic acid, 16% of titanium dioxide, 20% of coarse whiting powder, 3% of bentonite inorganic gel, 7% of glass powder and 20% of water.
The preparation method of the inorganic water-based paint of the embodiment is as follows:
stirring and mixing potassium silicate, a modified bentonite formaldehyde adsorbent, tetrapod-like zinc oxide whiskers, modified sepiolite, montmorillonite-loaded acrylic acid and water to obtain a mixed solution; adding titanium dioxide, coarse whiting powder and bentonite inorganic gel into the mixed solution under stirring to obtain a mixture; adding the glass powder into the mixture under stirring, and stirring for 1h to obtain the inorganic water-based paint.
In this example, the montmorillonite loaded acrylic acid is obtained by purifying bentonite, heating in sulfuric acid or hydrochloric acid for reaction, drying, performing alkaline modification, and adding acrylic acid for reaction modification.
The specific preparation method of the montmorillonite-loaded acrylic acid comprises the following steps:
the bentonite raw ore is crushed, bentonite with montmorillonite content more than or equal to 85% (mass ratio) is selected and put into an acidification tank for acidification, and the acidification agent is one of hydrochloric acid or sulfuric acid, preferably sulfuric acid. Adjusting the sulfuric acid to 4mole/l, reacting montmorillonite with the sulfuric acid for 8 hours, dissolving out calcium ions between lattice layers, then placing the montmorillonite into a rotary furnace for roasting, and controlling the temperature to be 90-120 ℃ until the montmorillonite is dried to obtain the acidified montmorillonite. Respectively mixing the acidified montmorillonite, deionized water and calcium oxide according to the weight ratio of 300 g: 1.5L: mixing and stirring uniformly according to a proportion of 150g, controlling the temperature at 50-60 ℃, reacting for 12 hours to obtain a dried material, adding deionized water to wash and remove unreacted calcium hydroxide, and drying to obtain the alkaline calcium-based montmorillonite. 500g of alkaline calcium-based montmorillonite, 50L of cyclohexane dispersant and 400g of acrylic acid are stirred for 4 hours at the speed of 100r/min, then the mixture is washed clean by absolute ethyl alcohol and cyclohexane mixture, and the montmorillonite-loaded acrylic acid is obtained after drying.
The bentonite inorganic gel is prepared by mixing bentonite and sodium fluoride or sodium carbonate according to the mass ratio of 24:1, reacting for 5 days, drying, and reacting with magnesium oxide.
The specific preparation method of the bentonite inorganic gel comprises the following steps:
288g of bentonite and 12g of sodium fluoride or sodium carbonate, mixing and reacting for 5 days, drying to obtain 300g of sodium bentonite, adding 700g of deionized water, and preparing into the bentonite with the solid-liquid ratio content of 3: 7, adding 5g of dispersing agent sodium hexametaphosphate, aging and reacting for 18 hours, drying the modified material at 150 ℃, crushing and sieving the modified material with a 325-mesh sieve, and mixing the crushed material with magnesium oxide accounting for 8 percent of the weight of the dried material. Fully stirring and reacting for 13 minutes to prepare the gel, and standing for 10 hours to obtain the bentonite inorganic gel.
The rest is the same as the first embodiment.
EXAMPLE III
The inorganic water-based paint of the embodiment comprises the following components in percentage by mass:
22% of potassium silicate, 1% of modified bentonite formaldehyde adsorbent, 3% of tetrapod-like zinc oxide whisker, 3% of modified sepiolite, 18% of titanium dioxide, 23% of heavy calcium powder and 30% of water.
The preparation method of the inorganic water-based paint of the embodiment is as follows:
stirring and mixing potassium silicate, a modified bentonite formaldehyde adsorbent, tetrapod-like zinc oxide whiskers, modified sepiolite and water to obtain a mixed solution; adding titanium dioxide and coarse whiting powder into the mixed solution under stirring, and stirring for 1h to obtain the inorganic water-based paint.
The rest is the same as the first embodiment.
Example four
The inorganic water-based paint of the embodiment comprises the following components in percentage by mass:
22% of potassium silicate, 3% of modified bentonite formaldehyde adsorbent, 3% of tetrapod-like zinc oxide whisker, 1% of modified sepiolite, 2% of montmorillonite-loaded acrylic acid, 16% of titanium dioxide, 20% of coarse whiting powder, 3% of bentonite inorganic gel, 5% of glass powder and 25% of water.
The rest is the same as the second embodiment.
EXAMPLE five
In the inorganic water-based paint of the embodiment, the modified bentonite formaldehyde adsorbent is obtained by heating bentonite in sulfuric acid or hydrochloric acid and then radiating the bentonite by microwave.
The rest is the same as the first embodiment.
EXAMPLE six
In the inorganic aqueous coating material of this example, the modified bentonite formaldehyde adsorbent is obtained by heating bentonite in sulfuric acid or hydrochloric acid.
The rest is the same as the second embodiment.
Reference example
Formaldehyde adsorption test
The detection basis is as follows: QB/T2761-2006 method for determining purification effect of indoor air purification product
The detection device comprises: atmosphere sampler and spectrophotometer
1: modified Bentonite Formaldehyde sorbent testing
The first day: 1000 g of modified bentonite formaldehyde adsorbent is placed in a test box of 1.5 cubic meters separately, and the test box isThe initial concentration of the internal formaldehyde reaches 1.29mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(formaldehyde removal rate of 97.6% in 24 h).
The next day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.28mg/m3And the formaldehyde concentration reaches 0.04mg/m after 24 hours3(24h formaldehyde removal 96.8%).
And on the third day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.07mg/m3And the formaldehyde concentration reaches 0.07mg/m after 24 hours3(24h formaldehyde removal 93.4%).
The fourth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.20mg/m3And the formaldehyde concentration reaches 0.09mg/m after 24 hours3(24h formaldehyde removal 92.5%).
The fifth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.03mg/m3And the formaldehyde concentration reaches 0.12mg/m after 24 hours3(24h formaldehyde removal 88.3%).
The sixth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.21mg/m3And the formaldehyde concentration reaches 0.22mg/m after 24 hours3(formaldehyde removal rate of 81.8% in 24 hours).
The seventh day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.18mg/m3And the formaldehyde concentration reaches 0.27mg/m after 24 hours3(formaldehyde removal rate of 77.1% in 24 h).
The eighth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.16mg/m3And the formaldehyde concentration reaches 0.35mg/m after 24 hours3(24h formaldehyde removal 69.8%).
The ninth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.09mg/m3And the formaldehyde concentration reaches 0.44mg/m after 24 hours3(24h formaldehyde removal 59.6%).
The tenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.03mg/m3And the formaldehyde concentration reaches 0.67mg/m after 24 hours3(24h formaldehyde removal 34.9%).
The eleventh day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.12mg/m3After 24 hoursThe concentration of formaldehyde reaches 0.84mg/m3(24h formaldehyde removal 25%).
The twelfth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.06mg/m3And the formaldehyde concentration reaches 0.98mg/m after 24 hours3(24h formaldehyde removal 7.5%).
The thirteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.03mg/m3And the formaldehyde concentration reaches 0.98mg/m after 24 hours3(24h formaldehyde removal 4.8%).
The fourteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.24mg/m3And the formaldehyde concentration reaches 1.17mg/m after 24 hours3(24h formaldehyde removal 5.6%).
On the fifteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.14mg/m3And the formaldehyde concentration reaches 1.04mg/m after 24 hours3(24h formaldehyde removal 8.7%).
2: tetrapod-like zinc oxide whisker test
The first day: 1000 g of tetrapod-like zinc oxide crystal whisker is separately placed in a test box of 1.5 cubic meters, and the initial concentration of formaldehyde in the test box reaches 1.17mg/m3And the formaldehyde concentration reaches 0.89mg/m after 24 hours3(24h formaldehyde removal 23.9%).
The next day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.28mg/m3And the formaldehyde concentration reaches 0.99mg/m after 24 hours3(24h formaldehyde removal 22.6%).
And on the third day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.24mg/m3And the formaldehyde concentration reaches 0.92mg/m after 24 hours3(24h formaldehyde removal 25.8%).
The fourth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.23mg/m3And the formaldehyde concentration reaches 1.09mg/m after 24 hours3(24h formaldehyde removal 11.3%).
The fifth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.18mg/m3And the formaldehyde concentration reaches 0.98mg/m after 24 hours3(24h formaldehyde removal 16.9%).
The sixth day: continue to useFormaldehyde is put into the test box, and the initial concentration reaches 1.22mg/m3And the formaldehyde concentration reaches 0.90mg/m after 24 hours3(24h formaldehyde removal 26.2%).
The seventh day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.03mg/m3And the formaldehyde concentration reaches 0.88mg/m after 24 hours3(24h formaldehyde removal 14.5%).
The eighth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.02mg/m3And the formaldehyde concentration reaches 0.79mg/m after 24 hours3(24h formaldehyde removal 22.5%).
The ninth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.14mg/m3And the formaldehyde concentration reaches 0.93mg/m after 24 hours3(24h formaldehyde removal 18.4%).
The tenth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.18mg/m3And the formaldehyde concentration reaches 0.99mg/m after 24 hours3(24h formaldehyde removal 16.1%).
The eleventh day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.28mg/m3And the formaldehyde concentration reaches 0.97mg/m after 24 hours3(24h formaldehyde removal 24.2%).
The twelfth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.18mg/m3And the formaldehyde concentration reaches 0.98mg/m after 24 hours3(24h formaldehyde removal 16.9%).
The thirteenth day: continuously adding formaldehyde into the test box until the initial concentration reaches 0.96mg/m3And the formaldehyde concentration reaches 0.73mg/m after 24 hours3(24h formaldehyde removal 23.9%).
The fourteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.19mg/m3And the formaldehyde concentration reaches 0.93mg/m after 24 hours3(24h formaldehyde removal 21.8%).
On the fifteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.15mg/m3And the formaldehyde concentration reaches 0.92mg/m after 24 hours3(24h formaldehyde removal 20%).
3: modified bentonite formaldehyde adsorbent composite tetrapod-like zinc oxide whisker test
The first day: the bentonite formaldehyde adsorbent 970 g and the tetrapod-like zinc oxide whisker 30 g are fully stirred and mixed, and then the mixture is placed in a test box of 1.5 cubic meters, and the initial concentration of formaldehyde in the test box reaches 1.36mg/m3After the formaldehyde adsorbent is placed, the concentration of formaldehyde is reduced to 0.25mg/m within 12 hours3(formaldehyde removal rate of 81% in 12 h), and the formaldehyde concentration reaches 0.02mg/m after 24h3(formaldehyde removal rate of 98% in 24 h).
The next day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.32mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(formaldehyde removal rate of 97.7% in 24 h).
And on the third day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.29mg/m3And the formaldehyde concentration reaches 0.02mg/m after 24 hours3(formaldehyde removal rate 98.4% in 24 h).
The fourth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.18mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(formaldehyde removal rate of 97.4% in 24 h).
The fifth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.13mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(formaldehyde removal rate of 97.3% in 24 h).
The sixth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.02mg/m3And the formaldehyde concentration reaches 0.01mg/m after 24 hours3(24h formaldehyde removal 99%).
The seventh day: continuously putting formaldehyde into the test box until the initial concentration reaches 0.97mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(24h formaldehyde removal 96.9%).
The eighth day: continuously putting formaldehyde into the test box until the initial concentration reaches 0.93mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(24h formaldehyde removal 96.7%).
The ninth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.08mg/m3And the formaldehyde concentration reaches 0.04mg/m after 24 hours3(24h formaldehyde removal 96.2%).
The tenth day: relay (S)Continuously feeding formaldehyde into the test box until the initial concentration reaches 1.35mg/m3And the formaldehyde concentration reaches 0.02mg/m after 24 hours3(formaldehyde removal rate 98.5% in 24 h).
The eleventh day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.31mg/m3And the formaldehyde concentration reaches 0.05mg/m after 24 hours3(24h formaldehyde removal 96.1%).
The twelfth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.03mg/m3And the formaldehyde concentration reaches 0.05mg/m after 24 hours3(24h formaldehyde removal 95.1%).
The thirteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 1.13mg/m3And the formaldehyde concentration reaches 0.04mg/m after 24 hours3(24h formaldehyde removal 96.4%).
The fourteenth day: continuously putting formaldehyde into the test box until the initial concentration reaches 0.91mg/m3And the formaldehyde concentration reaches 0.03mg/m after 24 hours3(24h formaldehyde removal 96.7%).
On the fifteenth day: continuously adding formaldehyde into the test box until the initial concentration reaches 1.31mg/m3And the formaldehyde concentration reaches 0.04mg/m after 24 hours3(24h formaldehyde removal 96.9%).
Claims (9)
1. The inorganic water-based paint is characterized by comprising the following components in percentage by mass:
20-24% of potassium silicate, 1-3% of modified bentonite formaldehyde adsorbent, 2-3% of tetrapod-like zinc oxide whisker, 1-3% of modified sepiolite, 16-20% of titanium dioxide, 20-27% of heavy calcium powder, 0-2% of montmorillonite-loaded acrylic acid, 0-3% of bentonite inorganic gel, 0-7% of glass powder, 0-1% of cellulose, 0-2% of odorless emulsion, 0-0.4% of 2-imidazolidinone, 0-0.6% of hydrophobic reinforcing agent and 20-30% of water.
2. The inorganic water-based paint according to claim 1, wherein the modified bentonite formaldehyde adsorbent is obtained by heating bentonite in sulfuric acid or hydrochloric acid.
3. The inorganic water-based paint as claimed in claim 1, wherein the modified bentonite formaldehyde adsorbent is prepared by heating bentonite in sulfuric acid or hydrochloric acid and subjecting the bentonite to microwave irradiation.
4. The inorganic waterborne coating according to claim 1, wherein the modified bentonite formaldehyde adsorbent is prepared according to the chinese patent application 201610244147.4.
5. The inorganic water-based paint according to claim 1, wherein the tetrapod-like zinc oxide whiskers are obtained by mixing 70% by mass of zinc particles and 30% by mass of bentonite, and firing the mixture at a high temperature in a high temperature furnace.
6. The inorganic water-based paint as claimed in claim 1, wherein the modified sepiolite is prepared by crushing sepiolite, acidifying, and calcining at 200-300 ℃.
7. The inorganic water-based paint as claimed in claim 1, wherein the montmorillonite-supported acrylic acid is obtained by purifying bentonite, heating the bentonite in sulfuric acid or hydrochloric acid for reaction, drying the bentonite, performing alkalization modification, and adding acrylic acid for reaction modification.
8. The inorganic water-based paint according to claim 1, wherein the bentonite inorganic gel is prepared by mixing bentonite and sodium fluoride or sodium carbonate according to a mass ratio of 24:1, reacting for 5 days, drying, and reacting with magnesium oxide.
9. The inorganic water-based paint according to claim 1, characterized in that the preparation method of the inorganic water-based paint is as follows:
stirring and mixing potassium silicate, a modified bentonite formaldehyde adsorbent, tetrapod-like zinc oxide whiskers, modified sepiolite, montmorillonite-loaded acrylic acid and water to obtain a mixed solution; adding titanium dioxide, coarse whiting powder, cellulose and bentonite inorganic gel into the mixed solution under stirring to obtain a mixed material; adding the glass powder, the odor-free emulsion, the 2-imidazolidinone and the hydrophobic reinforcing agent into the mixture under stirring, and stirring for 1 hour to obtain the inorganic water-based paint.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113321956A (en) * | 2021-05-08 | 2021-08-31 | 河北三棵树涂料有限公司 | Inorganic interior wall coating with aldehyde-removing, antibacterial and antiviral functions and preparation method thereof |
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| WO2013097464A1 (en) * | 2011-12-28 | 2013-07-04 | 上海墙特节能材料有限公司 | Inorganic dry powder building coating and preparing method therefor |
| CN106752157A (en) * | 2016-12-02 | 2017-05-31 | 济南大学 | A kind of multifunctional inorganic interior wall coating and preparation method thereof |
| CN109825145A (en) * | 2018-12-19 | 2019-05-31 | 湘潭海泡石科技有限公司 | Water base sepiolite coating of a kind of efficiently net aldehyde type and preparation method thereof |
| CN111849228A (en) * | 2020-08-04 | 2020-10-30 | 四川万祺科技有限公司 | Inorganic water-based paint and preparation method thereof |
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| WO2013097464A1 (en) * | 2011-12-28 | 2013-07-04 | 上海墙特节能材料有限公司 | Inorganic dry powder building coating and preparing method therefor |
| CN106752157A (en) * | 2016-12-02 | 2017-05-31 | 济南大学 | A kind of multifunctional inorganic interior wall coating and preparation method thereof |
| CN109825145A (en) * | 2018-12-19 | 2019-05-31 | 湘潭海泡石科技有限公司 | Water base sepiolite coating of a kind of efficiently net aldehyde type and preparation method thereof |
| CN111849228A (en) * | 2020-08-04 | 2020-10-30 | 四川万祺科技有限公司 | Inorganic water-based paint and preparation method thereof |
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| CN113321956A (en) * | 2021-05-08 | 2021-08-31 | 河北三棵树涂料有限公司 | Inorganic interior wall coating with aldehyde-removing, antibacterial and antiviral functions and preparation method thereof |
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