CN101928496A - High-performance visible light catalyzing inner-wall antibacterial coating - Google Patents
High-performance visible light catalyzing inner-wall antibacterial coating Download PDFInfo
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- CN101928496A CN101928496A CN2010102564693A CN201010256469A CN101928496A CN 101928496 A CN101928496 A CN 101928496A CN 2010102564693 A CN2010102564693 A CN 2010102564693A CN 201010256469 A CN201010256469 A CN 201010256469A CN 101928496 A CN101928496 A CN 101928496A
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Abstract
The invention relates to an inner-wall antibacterial coating which contains a modifier which is nitrogen doped nano titanium dioxide with visible light response. A preparation method comprises the following steps of: dispersing nano TiO2 into a water system containing a certain amount of dispersing agents or dispersing agent compositions, antifoaming agents and film forming auxiliary agents by adopting a high-speed dispersing machine SFJ-400; stirring at high speed for 20 minutes; adjusting a pH value to 9 to 10 by ammonia water; carrying out ultrasonic dispersion for 15 minutes; sequentially adding water, various padding and antifoaming agents, stirring again for 10 minutes and carrying out ultrasonic dispersion for 30 minutes to obtain a predispersing body which is a semifinished product; adding a proper number of antifoaming agents and silicon acrylic emulsion into the semifinished product; after uniformly stirring, adding a proper amount of thickening agents; adjusting the pH value to 9 to 10; adjusting coating to proper viscosity; fully stirring for 30 minutes and carrying out ultrasonic dispersion for one hour; and after the coating is uniform, filtering to obtain a coating product. The coating can be applied to places of interior decoration, mould prevention, bacterial resistance, and the like and has obvious antibacterial capability and sedimentation preventing capability.
Description
Technical field
The present invention relates to a kind of inner-wall antibacterial coating field, particularly a kind of nitrogen-doped nanometer light catalyzed coating and preparation method thereof, utilization has the inner-wall antibacterial coating of the nitrogen-doped nanometer titanium dioxide of visible light photoresponse as properties-correcting agent, this coating can be used in places such as interior decoration decoration, antimildew and antibacterial, has tangible antibacterial ability and anti-settling ability.
Background technology
Along with the attention of the mankind to self health status, the living environment of being together morning and night with it also more and more is subjected to people's attention.Living environment microbial contamination and room air pollution have produced very big influence to the human beings'health situation.According to relevant report, indoor environmental pollution has caused 35.7% respiratory tract disease, 22% chronic lung disease and 15% trachitis, bronchitis and lung cancer.Stop bacterium, virus to the human infection, reduce the content of indoor harmful gas, practical way just are to use green, feature of environmental protection building materials.Be embodied in the content that the coating material aspect just requires to develop low TVOC (organic volatile), have novel aqueous antibiotic paint antibiotic, the degraded obnoxious flavour.
Nitrogen doped Ti O
2Can under visible light catalytic, have certain antibacterial ability by industry in personage institute understanding progressively.
Nitrogen-doped nanometer TiO
2As a kind of novel anti-biotic material, because its unique photocatalytic effect, be widely used in antibacterial bacteriostatic, become in the photochemical catalysis research field one of direction of tool potentiality.But band TiO
2Greater band gap (3.2eV), can only influence wavelength less than the UV-light of 400nm (account for greatly sunlight 4%), visible light (account for greatly sunlight 43%) is not almost had response, light induced electron and photohole are easy to compound in addition, photo-quantum efficiency is low, has seriously restricted TiO
2The practical application efficient of photocatalytic effect.
Simultaneously, in liquid phase medium, because nano-TiO
2The activity of particle surface makes them be easy to reunite together, forms the bigger coacervate that has some weak linkage interfaces.Stop TiO
2Form one of high-density, the sedimentary method of lump shape, reduce interparticle Van der Waals force exactly, make primary particle be difficult for being agglomerated into secondary particle, thus avoid further interatomic bonding taking place and cause generating high-density, the lump shape precipitates.
The existence of coacervate hinders giving full play to of nano-powder characteristic greatly, and the dispersing property of therefore studying nano-powder will be the prerequisite and the basis of further improving the material settling out performance, the research nano-TiO
2Dispersion technology and stability thereof have become nano-TiO
2An indispensable part in the application.Nitrogen-doped nanometer TiO
2Being used for coating is a significant achievement of coating development, and it is new power, the especially nano-TiO of coating to high-level, high-performance, high-grade development
2The antibacterial sterilization effect of coating makes its focus that has become domestic and international concern, has widely to use.
But nano-TiO
2With nitrogen doped Ti O
2If addition is too big in the inner-wall antibacterial coating system, be very easy to produces agglomeration and influence the stability of coating, and then influence the overall performance of coating.Thereby the stability of screening suitable dispersion agent maintenance coating becomes key.
Nano-TiO
2With nitrogen doped Ti O
2The generation agglomeration is outwelled supernatant liquid after being embodied in and leaving standstill several hours, still has sedimentation demixing phenomenon in various degree.If the sedimentation degree is more little, show that the dispersion agent selection is appropriate, the stability of coating is good more.
Summary of the invention
The purpose of this invention is to provide a kind of have obviously antibiotic and anti-settling ability interior wall coating, particularly a kind of inner-wall antibacterial coating that contains the nitrogen-doped nanometer titanium dioxide of visible light photoresponse as properties-correcting agent.Add the composite dispersing agent of sodium polyacrylate, Sodium hexametaphosphate 99, three components of tripoly phosphate sodium STPP in this high-performance visible light catalyzing inner-wall antibacterial coating, thereby had a stronger anti-settling ability.While nitrogen-doped nanometer TiO
2Also has tangible bacteriostasis antibiosis effect.
The nano-TiO that the present invention relates to
2The preparation method can " tensio-active agent be to TiOSO with reference to seeing document
4The ordinary-temp hydrolysis legal system is equipped with nano-TiO
2The influence of powder " Tang Xiaohong, Zhou Dali, Yin Guangfu, Zhang Yun, Yang Weizhong, Zheng Changqiong, middle figure classification number: 0643 Document code: A article numbering: 1000-6532 (2004) 06-0011-05.
The nitrogen doped Ti O that the present invention relates to
2Can be with reference to seeing that " the hydrolytic precipitation legal system is equipped with nitrogen doped Ti O to document
2The activity research of photocatalyst " Tang Yuchao, Liu Shaogen, Xue Liping, condition is respected quiet, yellow snow peak, middle figure classification number: 0643 Document code: A article numbering: 1006-4540 (2005 J 03-056-03.
In fact nano TiO 2 and nitrogen doped Ti O2 are the conventional materials that can obtain, and existing how tame supplier can provide on the market, and the present invention also can buy nano TiO 2 and nitrogen doped Ti O2 on market.
Below be the antibacterial effect experiment of high-performance visible light catalyzing inner-wall antibacterial coating:
1, experimental technique
1.1 experimental program
By national standard ASTM D 3274-95 " evaluation method of coating surface destructiveness in microorganism and earth " and GB1741-79 (89) " the anti-mould assay method of paint film-first method ", adopt dull and stereotyped number scale that the anti-microbial property of modified paint is detected.
One, material:
1, test organisms: in the 6th generation of intestinal bacteria (8099), provided by Military Medical Science Institute
In the 6th generation of streptococcus aureus (ATCC6538), provided by Military Medical Science Institute
In the 6th generation of Candida albicans (ATCC10231), provided by Military Medical Science Institute
2, test sample: high-performance visible light catalyzing inner-wall antibacterial coating (lot number: 20100202) Sample A
Common nano TiO 2 dispersion system coating.The wherein common nano TiO 2 of sample B is provided by French Mei Lilian company
Two, method
1, test basis: GB 15979-2002
2, bacteriostatic test: action time: 2h, 4h, test temperature: 20 ℃ ± 1 ℃.Test repeats 3 times
1.2 coating is coated with the preparation of membrane sample
Slide surface is carried out acid etching, with deionized water clean, airing, get a certain amount of two kinds of experimental water coating respectively and respectively add 10% water paint and stir, adopt the XB-50 spreader modified paint evenly to be applied on the slide glass thickness 0.1～0.2mm.
1.3 antibacterial experiment flow process
(1) adopt dull and stereotyped number scale to carry out the mensuration of anti-microbial property.Sampling silk is put into sterile saline and is cooled off behind high-temperature sterilization, get after the cooling rapidly intestinal bacteria a little (in the entire operation process, all test tubes and vessel port all should towards high temperature lamps or in its vicinity in case other bacterial classifications infect).
(2) bacterium of taking out is inserted in the 10ml physiological saline, be mixed with the bacterium liquid of 0.1mol/ml.
(3) the bacterium liquid 1ml that gets in 2 steps puts into the test tube that 10ml physiological saline is housed, and is mixed with the bacterium liquid of 0.01mol/ml.
(4) get the bacterium liquid 0.2ml of 0.01mol/ml with liquid-transfering gun, dab is in being attached with on the slide glass that the nano TiO 2 modified paint films.
(5) reaction requires difference per sample, reacts for some time (0-8h), uses cotton rod (after the sterilization) the washcoated film film of abrasive tumbling surface gently.
(6) the cotton caput after will cleaning is put into 10ml physiological saline (each sample all adopts the cotton rod of similar number to clean), and jolting on the eddy mixer of 80 rotating speeds is to guarantee that reactant all is washed into physiological saline.
(7) the solution 0.3ml that gets in (6) with liquid-transfering gun inserts watch-glass (sterilization back), pours extractum carnis nutrient solution a little (to be advisable at the bottom of the lucky covering ware) immediately in watch-glass into.
(8) watch-glass being put into 37 ℃ of incubators cultivated 48 hours.
Experimental result and discussion
Table one, table two have provided respectively and have adopted high-performance visible light catalyzing inner-wall antibacterial coating and to the The anti-bacterial result of common nano TiO 2 dispersion system coating to intestinal bacteria, Candida albicans, streptococcus aureus.
Table one: high-performance visible light catalyzing inner-wall antibacterial coating (lot number: 20100202).Sample A
Table two: common nano-TiO
2Dispersion system coating.Sample B
Experimental result: 20 ℃ ± 1 ℃ reach under other equal envrionment conditions, from the high-performance visible light catalyzing inner-wall antibacterial coating test effect as can be seen, the antibacterial bacteriostatic effect of high-performance visible light catalyzing inner-wall antibacterial coating is apparently higher than common nano-TiO
2The fungistatic effect of dispersion system coating this shows nitrogen-doped nanometer TiO
2Because its unique photocatalytic effect, the antibacterial bacteriostatic effect is very obvious.
Technical scheme of the present invention is as follows:
High-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: organosilicon crylic acid latex 30-45 part, nano-TiO
225-37 part, nitrating nanometer TiO
215-23 part, titanium dioxide 20-36 part, kaolin 12-20 part, water-ground limestone 10-24 part, light calcium carbonate 15-27 part, silica ashes 18-27 part, water 28-35 part, defoamer 1.3-3.5 part, chlor(o)acetamide 0.09-0.34 part, alkylphenol polyoxyethylene (APE or OP) 1.2-7 part, sodium polyacrylate 1.2-3.5 part, film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 0.12-1.5 part, wood fibre thickening material 6-10 part
Wherein: the preparation method of this coating is: adopt SFJ-400 type high speed dispersor dispersing nanometer TiO
2In defoamer, the film coalescence aid 2,2 of 1/3rd weight that contain a certain amount of sodium polyacrylate, 1/3rd weight, 4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products.
High-performance visible light catalyzing inner-wall antibacterial coating comprises the component of following weight percent: organosilicon crylic acid latex 30-45 part, nano-TiO
225-37 part, nitrating nanometer TiO
215-23 part, titanium dioxide 20-36 part, kaolin 12-20 part, water-ground limestone 10-24 part, light calcium carbonate 15-27 part, silica ashes 18-27 part, water 28-35 part, defoamer 1.3-3.5 part, chlor(o)acetamide 0.09-0.34 part, alkylphenol polyoxyethylene (APE or OP) 1.2-7 part, sodium polyacrylate 0.7-2.8 part, Sodium hexametaphosphate 99 0.3-1.2 part, tripoly phosphate sodium STPP 0.5-1.3 part, film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 0.12-1.5 part, wood fibre thickening material 6-10 part
Wherein: the preparation method of this coating is for adopting SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products,
Wherein: the dispersion agent combination is to be prepared from by containing the following weight proportion raw material: sodium polyacrylate 0.7-2.8 part, Sodium hexametaphosphate 99 0.3-1.2 part, tripoly phosphate sodium STPP 0.5-1.3 part.
More excellent technical scheme is:
High-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: 45 parts of organosilicon crylic acid latexs, nano-TiO
237 parts, nitrating nanometer TiO
223 parts, 25 parts of titanium dioxides, 20 parts of kaolin, 24 parts of water-ground limestones, 27 parts of light calcium carbonates, 27 parts of silica ashes, 35 parts in water, 2.7 parts of defoamers, 0.21 part of chlor(o)acetamide, 4.2 parts of alkylphenol polyoxyethylene (APE or OP), 1.3 parts of sodium polyacrylates, 0.9 part of Sodium hexametaphosphate 99,0.9 part of tripoly phosphate sodium STPP, film coalescence aid 2,2,4-trimethylammonium-1,0.98 part of 3-pentanediol mono isobutyrate, 7 parts of wood fibre thickening materials.Wherein: the preparation method of this coating is for adopting SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products,
Wherein: the dispersion agent combination comprises 0.9 part of 1.3 parts of component sodium polyacrylates, Sodium hexametaphosphate 99,0.9 part of the tripoly phosphate sodium STPP of weight percent.
High-performance visible light catalyzing inner-wall antibacterial coating, wherein: this coating has stronger antibacterial bacteriostatic ability can be used in places such as interior decoration decoration, antimildew and antibacterial.
Present most of nano-TiOs
2The modification antibiotic paint all be with ultraviolet ray as excitation light source, and it is few to have a visible light-responded light catalyzed coating, photocatalysis efficiency is not high, this is mainly because not high the causing of titanium dioxide dispersion stabilization in water solvent.Nitrogen-doped modified nano titanium dioxide powder with visible light activity is that functional stuffing, water are as solvent, adopt the new compound dispersion technology of ultrasonic-dispersion agent, prepare a kind of traditional performance superior, at the antibacterial bacteriostatic environment-friendly interior wall coating with good light catalytic efficiency of visible-range response.
Specific embodiment:
Embodiment 1, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: 45 parts of organosilicon crylic acid latexs, nano-TiO
237 parts, nitrating nanometer TiO
223 parts, 25 parts of titanium dioxides, 20 parts of kaolin, 24 parts of water-ground limestones, 27 parts of light calcium carbonates, 27 parts of silica ashes, 35 parts in water, 2.7 parts of defoamers, 0.21 part of chlor(o)acetamide, 4.2 parts of alkylphenol polyoxyethylene (APE or OP), 0.9 part of dispersion agent, film coalescence aid 2,2,4-trimethylammonium-1,0.98 part of 3-pentanediol mono isobutyrate, 7 parts of wood fibre thickening materials.
Wherein: the preparation method of this coating is for adopting SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains dispersion agent, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, 1/2nd weight, and high-speed stirring 20min, ammoniacal liquor is regulated pH value to 9-10, ultra-sonic dispersion 15min; The water, the nitrating nanometer TiO that add 1/2nd weight then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products.
Dispersion agent is a polyvinyl alcohol.
Wherein: nano-TiO
2The preparation method " tensio-active agent is to TiOSO with reference to seeing document
4The ordinary-temp hydrolysis legal system is equipped with nano-TiO
2The influence of powder " Tang Xiaohong, Zhou Dali, Yin Guangfu, Zhang Yun, Yang Weizhong, Zheng Changqiong, middle figure classification number: 0643 Document code: 1000-6532 (2004) 06-0011-05 compiled in the A article; Nitrogen doped Ti O
2The preparation method with reference to seeing that " the hydrolytic precipitation legal system is equipped with nitrogen doped Ti O to document
2The activity research of photocatalyst " Tang Yuchao, Liu Shaogen, Xue Liping, condition is respected quiet, yellow snow peak, middle figure classification number: 0643 Document code: A article numbering: 1006-4540 (2005 J 03-056-03.
For example the organosilicon crylic acid latex that can buy on the market is as follows:
Organosilicon crylic acid latex is the water-based emulsion that esters of acrylic acid and organosilane monomer graft copolymerization form, and film forming has higher gloss, preferable salt fog resistance, alkali resistance, preservative property, extremely strong sticking power, water-tolerant, characteristics such as weather-proof excellence.Organosilicon crylic acid latex can be directly used in the impregnating material of metallic substance, the finish paint of metallic paint, zinc rich paint, waterproof paint, wood lacquer and various coating, high-grade outer wall paint.Its technical indicator is as follows:
| Project | Index | Project | Index |
| Outward appearance | The general blue liquid of oyster white | Solid content (wt%) | 45±2 |
| Minimum film-forming temperature (Tg) | 15-20℃ | Viscosity (mpa.a) | 500-1000 |
| PH value (potential of hydrogen) | 8.0-9.5 | Residual monomer (bromine number %) | ≤1.0 |
| Dilution stability | 20% aqueous solution passes through | Chemical stability (5% calcium chloride emulsion) | Pass through at 1: 1 |
| Mechanical stability | 4000r/min passes through half an hour | Freeze-thaw stability | 5 cycle through |
Embodiment 2, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: dispersion agent is 0.9 part of a sodium polyacrylate.All the other are with embodiment 1.
Embodiment 3, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: dispersion agent is 0.9 part of a Sodium hexametaphosphate 99.All the other are with embodiment 1.
Embodiment 4, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: dispersion agent is 0.9 part of a tripoly phosphate sodium STPP.All the other are with embodiment 1.
Embodiment 5, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: 45 parts of organosilicon crylic acid latexs, nano-TiO
237 parts, nitrating nanometer TiO
223 parts, 25 parts of titanium dioxides, 20 parts of kaolin, 24 parts of water-ground limestones, 27 parts of light calcium carbonates, 27 parts of silica ashes, 35 parts in water, 2.7 parts of defoamers, 0.21 part of chlor(o)acetamide, 4.2 parts of alkylphenol polyoxyethylene (APE or OP), film coalescence aid 2,2,4-trimethylammonium-1,0.98 part of 3-pentanediol mono isobutyrate, 7 parts of wood fibre thickening materials.All the other are with embodiment 1.
Wherein: the preparation method of this coating is for adopting SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, 1/2nd weight, and high-speed stirring 20min, ammoniacal liquor is regulated pH value to 9-10, ultra-sonic dispersion 15min; The water, the nitrating nanometer TiO that add 1/2nd weight then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products.
Embodiment 6, high-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: 45 parts of organosilicon crylic acid latexs, nano-TiO
237 parts, nitrating nanometer TiO
223 parts, 25 parts of titanium dioxides, 20 parts of kaolin, 24 parts of water-ground limestones, 27 parts of light calcium carbonates, 27 parts of silica ashes, 35 parts in water, 2.7 parts of defoamers, 0.21 part of chlor(o)acetamide, 4.2 parts of alkylphenol polyoxyethylene (APE or OP), 1.3 parts of sodium polyacrylates, 0.9 part of Sodium hexametaphosphate 99,0.9 part of tripoly phosphate sodium STPP, film coalescence aid 2,2,4-trimethylammonium-1,0.98 part of 3-pentanediol mono isobutyrate, 7 parts of wood fibre thickening materials
It is characterized in that: the preparation method of this coating is: adopt SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products,
Wherein: dispersion agent is 0.9 part of 1.3 parts of sodium polyacrylates, Sodium hexametaphosphate 99,0.9 part of the tripoly phosphate sodium STPP of weight ratio.
Simultaneous test is as follows:
The nitrogen-doped nanometer TiO that the different in moisture prose style free from parallelism that will be made through different dispersion agents by embodiment 1, embodiment 2, embodiment 3, embodiment 4, embodiment 5, embodiment 6 is
2Dispersion system is placed in five identical beakers and numbers A, B, and C, D, E, F leave standstill simultaneously after 5 hours and outwell supernatant liquid, and precipitation is put into the vacuum drying oven drying, will adopt FA1004 electronic balance weighing precipitation weight behind the dispersion system that make respectively.(wherein, sample A, B, C, D, E, the dispersion agent that F adopts is respectively the A polyvinyl alcohol, the B sodium polyacrylate, the C Sodium hexametaphosphate 99, D tripoly phosphate sodium STPP, E do not adopt dispersion agent, F sodium polyacrylate, Sodium hexametaphosphate 99, the combination of three compositions of tripoly phosphate sodium STPP.)
Experimental result is as follows:
After five hours leave standstill, the precipitation capacity of A up to 93.23%, the precipitation capacity of B has 43.65%, the precipitation capacity of C has 74.34%, the precipitation capacity of D has 62.33%, the precipitation capacity of E has 91.25%, the precipitation capacity of F is minimum reaches 30.56%.
Data according to experimental result can obtain: the TiO that promptly adopts dispersion agent sodium polyacrylate (PAANa)
2
The precipitation capacity that aqueous dispersion produced is less, and dispersion effect is also better, but adopts the dispersion agent of composition in sodium polyacrylate, Sodium hexametaphosphate 99, the tripoly phosphate sodium STPP three to make up the TiO that makes
2The precipitation capacity that aqueous dispersion produced is minimum, and dispersion effect is obviously best.The sample D of the sample C of employing Sodium hexametaphosphate 99 and employing tripoly phosphate sodium STPP does not add dispersion agent scheme E dispersion effect bigger improvement, and adopts the sample A of polyvinyl alcohol, to TiO
2The action effect of aqueous dispersion is unsatisfactory.
Claims (7)
1. high-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: organosilicon crylic acid latex 30-45 part, nano-TiO
225-37 part, nitrating nanometer TiO
215-23 part, titanium dioxide 20-36 part, kaolin 12-20 part, water-ground limestone 10-24 part, light calcium carbonate 15-27 part, silica ashes 18-27 part, water 28-35 part, defoamer 1.3-3.5 part, chlor(o)acetamide 0.09-0.34 part, alkylphenol polyoxyethylene (APE or OP) 1.2-7 part, sodium polyacrylate 0.7-2.8 part, Sodium hexametaphosphate 99 0.3-1.2 part, tripoly phosphate sodium STPP 0.5-1.3 part, film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 0.12-1.5 part, wood fibre thickening material 6-10 part
It is characterized in that: the preparation method of this coating is: adopt SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products,
Wherein: the dispersion agent combination is to be prepared from by containing the following weight proportion raw material: sodium polyacrylate 0.7-2.8 part, Sodium hexametaphosphate 99 0.3-1.2 part, tripoly phosphate sodium STPP 0.5-1.3 part.
2. high-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: organosilicon crylic acid latex 30-45 part, nano-TiO
225-37 part, nitrating nanometer TiO
215-23 part, titanium dioxide 20-36 part, kaolin 12-20 part, water-ground limestone 10-24 part, light calcium carbonate 15-27 part, silica ashes 18-27 part, water 28-35 part, defoamer 1.3-3.5 part, chlor(o)acetamide 0.09-0.34 part, alkylphenol polyoxyethylene (APE or OP) 1.2-7 part, sodium polyacrylate 1.2-3.5 part, film coalescence aid 2,2,4-trimethylammonium-1,3-pentanediol mono isobutyrate 0.12-1.5 part, wood fibre thickening material 6-10 part
It is characterized in that: the preparation method of this coating is: adopt SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor is regulated pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products.
3. high-performance visible light catalyzing inner-wall antibacterial coating, wherein: it is to be prepared from by containing the following weight proportion raw material: 45 parts of organosilicon crylic acid latexs, nano-TiO
237 parts, nitrating nanometer TiO
223 parts, 25 parts of titanium dioxides, 20 parts of kaolin, 24 parts of water-ground limestones, 27 parts of light calcium carbonates, 27 parts of silica ashes, 35 parts in water, 2.7 parts of defoamers, 0.21 part of chlor(o)acetamide, 4.2 parts of alkylphenol polyoxyethylene (APE or OP), 1.3 parts of sodium polyacrylates, 0.9 part of Sodium hexametaphosphate 99,0.9 part of tripoly phosphate sodium STPP, film coalescence aid 2,2,4-trimethylammonium-1,0.98 part of 3-pentanediol mono isobutyrate, 7 parts of wood fibre thickening materials
It is characterized in that: the preparation method of this coating is: adopt SFJ-400 type high speed dispersor dispersing nanometer TiO
2In the defoamer that contains a certain amount of sodium polyacrylate, Sodium hexametaphosphate 99, tripoly phosphate sodium STPP, 1/3rd weight, film coalescence aid 2,2,4-trimethylammonium-1, in the aqueous systems of 3-pentanediol mono isobutyrate, and high-speed stirring 20min, ammoniacal liquor regulate pH value to 9-10, ultra-sonic dispersion 15min; Add entry, nitrating nanometer TiO then successively
2, nano-TiO
2, titanium dioxide, kaolin, water-ground limestone, light calcium carbonate, silica ashes, the defoamer of 1/3rd weight, chlor(o)acetamide, alkylphenol polyoxyethylene (APE or OP), stir 10min with the 1500r/min rotating speed again, ultra-sonic dispersion 30min, obtaining predispersion is work in-process; The defoamer and the organosilicon crylic acid latex that add 1/3rd weight again in the above-mentioned work in-process, the back that stirs adds an amount of wood fibre thickening material, ammoniacal liquor is regulated pH value to 9-10, fully stir again, ultra-sonic dispersion, evenly after after filtration coating products,
Wherein: dispersion agent is 0.9 part of 1.3 parts of sodium polyacrylates, Sodium hexametaphosphate 99,0.9 part of the tripoly phosphate sodium STPP of weight ratio.
4. high-performance visible light catalyzing inner-wall antibacterial coating as claimed in claim 3 is characterized in that: comprise sodium polyacrylate, Sodium hexametaphosphate 99, three kinds of compositions of tripoly phosphate sodium STPP in the dispersion agent combination of this coating.
5. high-performance visible light catalyzing inner-wall antibacterial coating as claimed in claim 3 is characterized in that: the anti-settling effect of this coating is stronger, and the precipitation capacity that aqueous dispersion produced is few, and dispersion effect is best.
6. as claim 1 or 2 or 3 described high-performance visible light catalyzing inner-wall antibacterial coatings, it is characterized in that: the alkylphenol polyoxyethylene in the adjuvant component (APE or OP) belongs to the ethers active substance, belongs to a kind of tensio-active agent.
7. high-performance visible light catalyzing inner-wall antibacterial coating, it is characterized in that: this coating has stronger antibacterial bacteriostatic ability can be used in places such as interior decoration decoration, antimildew and antibacterial.
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| CN2010102564693A CN101928496A (en) | 2010-08-18 | 2010-08-18 | High-performance visible light catalyzing inner-wall antibacterial coating |
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| CN2010102564693A CN101928496A (en) | 2010-08-18 | 2010-08-18 | High-performance visible light catalyzing inner-wall antibacterial coating |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194935A (en) * | 2012-03-31 | 2013-07-10 | 宁波亚洲浆纸业有限公司 | Production process of antibacterial coating, production process of antibacterial paper and antibacterial paper |
| CN107129750A (en) * | 2017-07-03 | 2017-09-05 | 四川锦泓佳建筑装饰工程有限公司 | A kind of environment-friendlyfireproof fireproof paint |
| CN109810596A (en) * | 2017-11-20 | 2019-05-28 | 立邦涂料（中国）有限公司 | A kind of exploitation and application of New-type latex paint protective system |
| CN112745767A (en) * | 2019-10-31 | 2021-05-04 | 江西伦比新材料科技有限公司 | Multifunctional wall waterproof tile composition |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998028983A1 (en) * | 1996-12-27 | 1998-07-09 | Fuji Chemical Industry Co., Ltd. | Antimicrobial/antifungal composition |
| CN1696228A (en) * | 2005-05-26 | 2005-11-16 | 北京科技大学 | Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method |
-
2010
- 2010-08-18 CN CN2010102564693A patent/CN101928496A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998028983A1 (en) * | 1996-12-27 | 1998-07-09 | Fuji Chemical Industry Co., Ltd. | Antimicrobial/antifungal composition |
| CN1696228A (en) * | 2005-05-26 | 2005-11-16 | 北京科技大学 | Light catalyzed coating modified by nitrogen dopen Nano titanium dioxide and preparation method |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194935A (en) * | 2012-03-31 | 2013-07-10 | 宁波亚洲浆纸业有限公司 | Production process of antibacterial coating, production process of antibacterial paper and antibacterial paper |
| CN107129750A (en) * | 2017-07-03 | 2017-09-05 | 四川锦泓佳建筑装饰工程有限公司 | A kind of environment-friendlyfireproof fireproof paint |
| CN109810596A (en) * | 2017-11-20 | 2019-05-28 | 立邦涂料（中国）有限公司 | A kind of exploitation and application of New-type latex paint protective system |
| CN109810596B (en) * | 2017-11-20 | 2021-05-25 | 立邦涂料（中国）有限公司 | Development and application of novel latex paint anticorrosion system |
| CN112745767A (en) * | 2019-10-31 | 2021-05-04 | 江西伦比新材料科技有限公司 | Multifunctional wall waterproof tile composition |
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