CN1470574A - Antibacterial negative ion coating - Google Patents
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Abstract
The present invention belongs to a functional coating material and its preparation technology field, in particular it is an antibacterial negative ion coating material capable of improving indoor air quality, and its composition includes water, aqueous emulsion, anti-bacterial agent and other adjuvants, and it is characterized by that said coating material composition also includes negative ion powder body, and the described anti-bacterial agent is an inorganic nano silver series anti-bacterial agent, and the other adjuvants are dry film anti-mildew agent, dispersing agent, defoaming agent, pH regulating agent, precipitation-proofing agent, film-forming adjuvant, thickening agent and pigment filling material. Said invention mainly is used as coating material for internal wall and external wall, and its anti-bacterial rate is up to 95%.
Description
The technical field is as follows: the invention belongs to the technical field of functional coatings and preparation thereof, and relates to an antibacterial negative ion coating which has a lasting antibacterial effect, does not pollute human beings and the environment and can improve the air quality.
Background art: bacteria are killers that are harmful to human health, and the proliferation and spread of bacteria can lead to the development of epidemics. The spray type disinfectant is commonly used by human beings to kill bacteria indoors and outdoors, but has the disadvantages of high toxicity, peculiar smell, high environmental pollution, short time effect, easy generation of drug resistance to bacteria and need to be disinfected every day. Later, people add the organic bactericide into the paint to prepare the antibacterial paint, and the paint is used for painting the wall body, so that the day-to-day disinfection can be avoided, but the paint has the defects of short antibacterial aging, easy generation of drug resistance by bacteria, environmental pollution and the like. Chinese patent application ZL02124097.3 'a nano inner and outer wall modified coating' introduces a coating which has a certain antibacterial property but has a non-obvious antibacterial effect.
In addition, with the improvement of living standard of people, household appliances and air conditioners are used in large quantities, the concentration of negative ions in indoor air is very low and far lower than that of negative ions required by human bodies, and in severe cases, the negative ions are positive ions in the air. The negative ion generator is one of means for solving the problem of low concentration of negative ions in the room, but it needs to increase the equipment and power consumption, and needs to be powered on every day. The relationship between anion content distribution and health is shown in table 1:
table 1: comparison of anion content distribution with health relationship (according to the report of International journal of medicine)
Name (R) | Negative ion content (per/cm)3) | Degree of relationship |
Forest waterfall area, suburb field Etc. of | ≥5000 | Sterilizing effect, and reducing disease infection |
City park | 1000--2000 | Basic need for maintaining health |
Street greening area | 100--200 | Inducing margins of physiological disorders |
Urban residential enclosed area | 40--50 | Inducing physiological disorders, e.g. neurasthenia Respiratory diseases, allergic diseases, etc |
Indoor air conditioning room with cooling and heating functions for long time After the room | 0--25 | Cause the symptoms of air conditioning diseases |
The invention content is as follows: one of the technical problems to be solved by the invention is as follows: the antibacterial range of the coating is improved, the antibacterial effect time is prolonged, the environment is not polluted, and the environment-friendly coating which has broad-spectrum antibacterial effect, lasting antibacterial effect, extremely difficult generation of drug resistance and no pollution to human and environment is designed.
The second technical problem to be solved by the invention is as follows: the coating can continuously release negative ions, and the environment-friendly coating which can continuously release the negative ions without energy sources, keep the quantity of the negative ions in the indoor space to reach the concentration required by a human body and has a health-care effect is designed.
The third technical problem to be solved by the invention is: the synergistic effect of the components of the coating is increased, the coating meeting the national standard is designed, the components in the coating do not change the color of the nano silver antibacterial agent, the compatibility of the nano silver antibacterial agent and the anion powder is good, and the nano silver antibacterial agent and the anion powder have the synergistic effect in the aspect of antibacterial function.
The technical scheme of the invention is realized as follows:an antibacterial negative-ion paint contains inorganic nano-class Ag-series antibacterial agent, negative-ion powder, dry-film mildew inhibitor, aqueous emulsion, disperser, defoaming agent, pH regulator, anti-settling agent, filming assistant, thickening agent and pigment.
The antibacterial agent is an inorganic nano silver antibacterial agent, the active component of the antibacterial agent is nano silver or silver sol, and the carrier of the antibacterial agent with the carrier can be zirconium phosphate, titanium dioxide, silicon dioxide, zeolite and the like. The nano silver can be present in the form of a silver compound, such as Agcl, AgBr, or a silver complex, or silver ion Ag+(ii) a The nano silver is combined with the carrier in a coated or free form; the content of the nano silver in the antibacterial agent is 0.01-10%; the antibacterial agent is used in the amount of 0.01-2.0%.
The negative ion powder is powder formed by grinding tourmaline, mirabilite and other ores. The dosage of the anion powder in the coating is 0.01-2.0%.
The paint of the invention can be acrylic synthetic resin emulsion paint or other water-based paint. Wherein, the base material in the coating can be one or two of emulsions such as acrylate, polyurethane, epoxy, silica sol and the like.
The weight percentage of each component of the invention is as follows (%): water 10.0-40.0 nano silver series antibacterial agent 0.01-1.0pH regulator 0.1-0.4 dry film mildew inhibitor 0-0.05 hydroxyethyl cellulose 0-0.5 anion powder 0.01-1.0 dispersing agent, wetting agent 0.2-0.6 film forming auxiliary agent 0.1-0.5 emulsion 10.0-50.0 pigment filler 10-25.0 rheological modifier 0-1.0 pigment filler 20-40.0 thickener 0-2.0 anti-settling agent 0-2.0
The pigment and filler 1 is one or more than 2 kinds of powder of titanium dioxide, lithopone, kaolin and silicon-aluminum powder.
The pigment and filler 2 is one or more than 2 kinds of powder of calcium carbonate, talcum powder, mica powder, wollastonite powder, silica micropowder, sierozem powder, attapulgite and bentonite. All raw materials are purchased from the market.
The manufacturing process of the invention is as follows: under the low-speed stirring of less than 500 r/min, firstly adding a dispersing agent, a wetting agent, a pH regulator, a defoaming agent and hydroxyethyl cellulose (4% solution) into water according to the proportion and the formula requirements in sequence, and fully dispersing and dissolving to form a uniform solution; then adding pigment, filler and functional materials in the formula, and dispersing at high speed by using a high-speed dispersion machine at a rotating speed of more than 1000 rpm, and sanding if necessary to ensure that the fineness reaches 20-60 um; then adding the film forming agent and the residual defoaming agent to eliminate bubbles at the medium rotating speed of 500-1000 rpm, adding the emulsion or the water-based resin, and uniformly stirring; and finally, adding a thickening agent and a flatting agent according to the formula requirement to adjust the viscosity to 90-100KU, fully and uniformly stirring and then discharging.
The invention has the beneficial effects that: the beneficial effects of the invention are embodied by various components of the coating, and the antibacterial mechanism of the antibacterial agent in the coating is as follows: 1. under the irradiation of visible light, Ag+Can make O in the air2Is catalyzed to produce superoxide2Conversion of O to H2O2The strong oxidizability can quickly decompose organic matters, and the sterilization effect is achieved. 2. Ag+Because of its high oxidation-reduction potential, it is very easy to be reduced, and is very easy to be mixedwith thiol group, carboxyl group and phenol water acid in organic materialThe reactive groups, sulfo groups, etc. can inactivate proteases and cause bacterial death. 3. Ag+Can combine with cell membrane and membrane protein to damage the three-dimensional structure (denaturation), and reduce cell function in short time; furthermore, contact of the metal ions with the interior of the cell will interfere with cellular electron-conducting enzymes and disrupt DNA replication. 4. Ag+Can change the permeability of the membrane and break the cell. 5. Ag+In the form of silver insoluble salt, Ag+Has slow release effect, and can prolong the antibacterial activity.
The nano silver antibacterial agent is firmly combined with the coating through the carrier, so that the nano silver antibacterial coating has the service life which is as long as the service life of a coating film in the aspect of antibacterial function. The antibacterial principle of the nano-silver antibacterial agent determines that the antibacterial negative ion coating kills bacteria on the coating in a contact mode, thereby effectively inhibiting the spread of the bacteria and cutting off the infection path of the bacteria.
The principle that the negative ion powder releases negative ions is as follows: the negative ion powder contains multiple elements such as Si, Mg, Fe, Al, K and Na, and generates trace radioactive rays which have the effects of stimulating growth and prolonging the service life. The negative ion powder generates the radiation amount of less than 1mSv per year and has no harm to human bodies.
The radiation causes electrons e contained in the atmospheric components-Emission, emitted electrons e-With CO2、H2O reacts, thereby generating negative ions.
Water molecules are ionized after being irradiated by radioactive rays to generate free radical OH which has extremely strong reactivity with organic compounds in organisms, and the OH has the functions of antibiosis, sterilization and insect prevention. The binding force between the negative ion powder and each component in the coating is strong, so that the negative ion sustained-release coating can continuously release negative ions.
The test shows that: the antibacterial negative ion of the inventionThe coating has an antibacterial rate of 95% for mixed bacteria such as escherichia coli, staphylococcus aureus, bacillus megaterium, pseudomonas fluorescens, bacillus subtilis and the like through detection by the inspection center of the research institute of industrial microorganisms in Shanghai city. The invention is detected by a quality supervision and inspection master station of environment-friendly products in Shanghai city, and the content of negative ions reaches 1200/cm3So as to make the indoor anion concentration reach the air quality of city park level. Through the detection of the chemical product quality supervision and inspection center in Shanghai city,the conventional performance of the coating reaches and exceeds the requirement of national standard GB/T9756-2001 (superior product), the content of harmful substances of the coating reaches GB18582-2001 standard, wherein the content of Volatile Organic Compounds (VOC) is 15g/L, which is greatly lower than the requirement of national standard 200 g/L.
The specific implementation mode is as follows:
example 1:
water 269.00
pH regulators: AMP-953.00
Hydroxyethyl cellulose: 250HBR 2.00
Dispersing agent: sodium hexametaphosphate 1.00
Dispersing agent: 50402.00
Wetting agent: PE 1001.00
Defoaming agent: NXZ 1.00
Titanium white powder 200.00
Calcium carbonate 100.00
Talcum powder 30.00
Kaolin 30.00
Silicium powder 60.00
Anion powder 3.00
Nano inorganic antibacterial agent: T200-CA 14.00
Anti-settling agent: ATT-503.00
Dry film mildew preventive: m-82.00
Film-forming auxiliary agent: texanol 7.00
Film-forming auxiliary agent: propylene glycol 12.00
Emulsion: styrene-acrylic emulsion 6512-1220.00
Emulsion: elastic emulsion 2438S 30.00
Rheology modifier: 2020/Water (1: 1) 6.00
Thickening agent: TT-935/water (1: 1) 14.00
Total 1000.00
The manufacturing process of the invention is as follows: under the low-speed stirring of less than 500 revolutions per minute, firstly adding 2 parts of a dispersing agent 5040, 1 part of a dispersing agent sodium hexametaphosphate, 1 part of a wetting agent PE100, 3 parts of a pH regulator AMP-95, 0.6 part of an antifoaming agent NXZ and 2 parts of a hydroxyethyl cellulose 250HBR 4% solution into 271 parts of water according to the sequence and the formula requirements, and fully dispersing and dissolving to obtain a uniform solution; then adding the pigment, filler and functional materials in the formula, namely adding 200 parts of titanium dioxide, 100 parts of calcium carbonate, 30 parts of talcum powder, 30 parts of kaolin, 60 parts of silicon-aluminum powder, 3 parts of anion powder and 4 parts of nano inorganic antibacterial agent purchased from Shanghai Weilai New Material science and technology Limited company: T200-CA1, 3 parts of anti-settling agent: ATT-50, high-speed dispersing with a high-speed disperser at a rotation speed of more than 1000 rpm, and sanding if necessary to make the fineness reach 30-60 um; then adding 7 parts of film forming agent Texanol and 12 parts of film forming agent propylene glycol at the medium rotating speed of 500-charge 1000 r/min, adding 0.4 part of residual defoaming agent NXZ to eliminate bubbles, adding 220 parts of styrene-acrylic emulsion 6512-1 and 30 parts of elastic emulsion 2438S, and uniformly stirring; and finally, adding 14 parts of thickening agent TT-935/water (1: 1) and 6 parts of rheology modifier according to the formula requirement: 2020/water (1: 1) to adjust the viscosity to 90-100KU, and discharging after fully and uniformly stirring.
Example 2:
water 271.50
pH regulators: AMP-953.00
Hydroxyethyl cellulose: 250HBR 2.00
Dispersing agent: sodium hexametaphosphate 1.00
Dispersing agent: 50402.00
Wetting agent: PE 1001.00
Defoaming agent: NXZ 1.50
Titanium white 150.00
Calcium carbonate 150.00
Kaolin 30.00
Silicium powder 90.00
Anion powder 6.00
Nano inorganic antibacterial agent: T200-CA 14.00
Anti-settling agent: ATT-503.00
Dry film mildew preventive: m-82.00
Film-forming auxiliary agent: texanol 8.00
Film-forming auxiliary agent: propylene glycol 14.00
Emulsion: acetic tertiary emulsion 3502250.00
Rheology modifier: UH 420/Water (1: 1) 4.00
Thickening agent: TT-935/water (1: 1) 7.00
The total of 1000.00 was the same as in example 1.
Example 3:
water 238.00
pH regulators: AMP-953.00
Hydroxyethyl cellulose: 250HBR 2.00
Dispersing agent: sodium hexametaphosphate 0.50
Dispersing agent: 50402.00
Wetting agent: PE 1001.00
Defoaming agent: NXZ 1.50
Titanium dioxide 210.00
Calcium carbonate 50.00
Talcum powder 25.00
65.00 g of silicon-aluminum powder
Anion powder 3.00
Nano inorganic antibacterial agent: T200-CA 15.00
Anti-settling agent: ATT-503.00
Dry film mildew preventive: m-82.00
Film-forming auxiliary agent: propylene glycol 10.00
Film-forming auxiliary agent: texanol 11.00
Emulsion: AD36 elastic emulsion 350.00
Rheology modifier: 2020/water (1: 1) 8.00
Thickening agent: TT-935/water (1: 1) 10.00
The total of 1000.00 was the same as in example 1.
Example 4:
water 238.00
pH regulators: AMP-953.00
Hydroxyethyl cellulose: 250HBR 2.00
Dispersing agent: sodium hexametaphosphate 0.50
Dispersing agent: 50402.00
Wetting agent: PE 1001.00
Defoaming agent: NXZ 1.50
Titanium dioxide 210.00
Calcium carbonate 50.00
Talcum powder 25.00
65.00 g of silicon-aluminum powder
Anion powder 3.00
Nano inorganic antibacterial agent: T200-CA 15.50
Anti-settling agent: ATT-501.50
Dry film mildew preventive: m-83.00
Film-forming auxiliary agent: propylene glycol 12.00
Film-forming auxiliary agent: texanol 11.00
Emulsion: 3502 acetic acid tert-emulsion 350.00
Rheology modifier: UH 420: Water (1: 1) 6.00
Thickening agent: TT-935: water (1: 1) 10.00
The total of 1000.00 was the same as in example 1.
Example 5:
water 278.0
pH regulators: NH (NH)33.0
Dispersing agent: p192.0
Dispersing agent: sodium hexametaphosphate 1.0
Wetting agent: OP-100.5
Film-forming auxiliary agent: propylene glycol 12.0
Defoaming agent: SPA-2023.0
Hydroxyethyl cellulose: 250HBR 3.5
Titanium white powder 38.00
Calcium carbonate 230.00
Kaolin 150.00
Talcum powder 60.00
Wollastonite powder 60.00
Anion powder 3.00
Nano inorganic antibacterial agent: T200-CA 13.00
Dry film mildew preventive: m-82.00
Anti-settling agent: attapulgite 10.00
Film-forming auxiliary agent: TEXANOL 5.0
Emulsion: 6512-1 emulsion 120.0
Rheology modifier: 2020: H2O(1∶1) 6.0
Thickening agent: HX 398: H2O(1∶1) 10.0
The total of 1000.0 and the rest are the same as in example 1.
Claims (7)
1. An antibacterial negative ion coating, which comprises water, water-based emulsion, an antibacterial agent and other auxiliary agents, and is characterized in that: the coating also comprises anion powder, the antibacterial agent is an inorganic nano silver antibacterial agent, and other auxiliary agents are as follows: the paint comprises a dry film mildew inhibitor, a dispersing agent, a defoaming agent, a pH regulator, an anti-settling agent, a film forming additive, a thickening agent and pigment fillers, wherein the weight percentage of each component is as follows (%): water 10.0-40.0 nano silver series antibacterial agent 0.01-1.0pH regulator 0.1-0.4 dry film mildew inhibitor 0-0.05 hydroxyethyl cellulose 0-0.5 anion powder 0.01-1.0 dispersing agent, wetting agent 0.2-0.6 film forming auxiliary agent 0.1-0.5 emulsion 10.0-50.0 pigment filler 10-25.0 rheological modifier 0-1.0 pigment filler 20-40.0 thickener 0-2.0 anti-settling agent 0-2.0
2. The antibacterial negative ion coating as claimed in claim 1, which is characterized in that: the active component of the inorganic nano silver antibacterial agent is nano silver or silver sol, the carrier of the antibacterial agent with the carrier can be zirconium phosphate, titanium dioxide, silicon dioxide and zeolite, the existing form of the nano silver can be a silver compound, such as Agcl and AgBr, or a silver complex, or silver ion Ag+The nano silver is combined with the carrier in a coating or free form, the content of the nano silver in the antibacterial agent is 0.01-10%, and the dosage of the antibacterial agent in the coating is 0.01-2.0%.
3. The antibacterial negative ion coating as claimed in claim 1, which is characterized in that: the negative ion powder is powder formed by grinding tourmaline, mirabilite and other ores, and the dosage of the negative ion powder in the coating is 0.01-2.0%.
4. The antibacterial negative ion coating as claimed in claim 1, which is characterized in that: the emulsion is one or two of acrylic ester, polyurethane, epoxy, silica sol and the like.
5. The antibacterial negative ion coating as claimed in claim 1, which is characterized in that: the pigment and filler 1 is one or more than 2 kinds of powder of titanium dioxide, lithopone, kaolin and silicon-aluminum powder.
6. The antibacterial negative ion coating as claimed in claim 1, which is characterized in that: the pigment and filler 2 is one or more than 2 kinds of powder of calcium carbonate, talcum powder, mica powder, wollastonite powder, silica micropowder, sierozem powder, attapulgite and bentonite.
7. The preparation method of the antibacterial negative ion coating material as claimed in claim 1, which is characterized by comprising the following steps: the preparation process comprises the following steps: under the low-speed stirring of less than 500 r/min, firstly adding a dispersing agent, a wetting agent, a pH regulator, a defoaming agent and hydroxyethyl cellulose (4% solution) into water according to the proportion and the formula requirements in sequence, and fully dispersing and dissolving to form a uniform solution; then adding pigment, filler and functional materials in the formula, and dispersing at high speed by using a high-speed dispersion machine at a rotating speed of more than 1000 rpm, and sanding if necessary to ensure that the fineness reaches 20-60 um; then adding the film forming agent and the residual defoaming agent to eliminate bubbles at the medium rotating speed of 500-1000 rpm, adding the emulsion or the water-based resin, and uniformly stirring; and finally, adding a thickening agent and a flatting agent according to the formula requirement to adjust the viscosity to 90-100KU, fully and uniformly stirring and then discharging.
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CN 03129256 CN1206291C (en) | 2003-06-16 | 2003-06-16 | Antibacterial negative ion coating |
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CN 03129256 CN1206291C (en) | 2003-06-16 | 2003-06-16 | Antibacterial negative ion coating |
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