CN109852196A - A kind of preparation method of photocatalysis shell powder paint - Google Patents
A kind of preparation method of photocatalysis shell powder paint Download PDFInfo
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Abstract
The present invention relates to building coating preparation technical fields, and in particular to a kind of preparation method of photocatalysis shell powder paint.The present invention aoxidizes thin base galapectite powder using hydrogen peroxide and methanol and obtains photocatalytic nanometer pipe carrier, by aziridine, tetraethylenepentamine, bisphenol A type epoxy resin is scattered in anhydrous methanol, silicone acrylic emulsion is sequentially added after dissolution, sepiolite powder, diatomite, conch meal etc. obtains photocatalysis shell powder paint, by nano-cellulose charing back loading on photocatalytic nanometer pipe carrier, with very strong adsorption capacity, after it and nano-titanium dioxide are mixed, it is easy to receive the light induced electron that titanium dioxide generates, improve the efficiency of the organic toxic gas of photocatalytic degradation of indoor, conch meal and photocatalytic nanometer pipe carrier provide cellular structure jointly, it improves to indoor photocatalytic oxidation efficiency, to make chromium ion in photocatalytic nanometer pipe carrier that can improve adsorption rate in the organic toxic gas of low concentration, health environment-friendly, it is answered with wide Use prospect.
Description
Technical field
The present invention relates to building coating preparation technical fields, and in particular to a kind of preparation side of photocatalysis shell powder paint
Method.
Background technique
As people require the continuous improvement of finishing quality, composite material more and more uses in house decoration,
The noxious material of production is flooded with each family, endangers the health of people.Find the indoor wall coating of environmental protection in recent years
To be increasingly becoming the research hotspot of people.
The main component of shell is the compound of calcium, including 95% calcium carbonate and a small amount of microelement, chitin and amino
Acid etc..Conch meal is granular material of the shell after over cleaning, calcining, crushing and grinding.Shell powder paint is using natural
Conch meal is raw material and other fillers and auxiliary agent, through being blended in be stirred in the regular hour made of a kind of coating.Shellfish
Shell powder coating is a kind of very strong wall material of a dicoration, and existing emulsion paint is rich in color, and there are also the pattern of wallpaper effects
Fruit, the existing feature of environmental protection, and have dicoration.It lives in household, classroom, office etc. or the furnishing fields of office indoor wall has
Huge application potential.
Conch meal painting is attached to inner wall of building face, the cellular structure having due to itself and its subalkaline characteristic,
Absorption can not only be played, resolving harmful gas, the effect for keeping air humidity, sterilizing antibacterial also have good aquatic respiration function
Energy.Metope does not condense under low pressure, high- humility state, and in dry conditions, it can be by the moisture stored within the walls slowly
Release, is known as the coating of " can breathe ".Its performance is better than diatom ooze, and production cost is lower than emulsion paint, easy for construction, is coating
Industrial expansion direction has fabulous market prospects.
Existing shell powder paint largely relies on cellular structure, adsorbs toxic and harmful gas, it can be difficult to realization pair
The effect that the removal of toxic and harmful gas is even decomposed.In addition, existing shell powder paint that there is also heat insulation and preservation effects is poor,
Waterproofness is poor, adhesive force is not strong, paint film difficulty parches, easily picking and not scrubbing resistance the shortcomings that, be unfavorable for actually using, also influence
The popularization of shell powder paint.
Therefore it provides a kind of good waterproof performance, is not easy picking and green and healthy shell powder paint is particularly significant.
Summary of the invention
Present invention mainly solves the technical issues of, for existing shell powder paint be applied to inner wall of building face, rely on it is more
Permeability structure adsorbs organic toxic gas, it can be difficult to realizing the defect even decomposed to the removal of organic toxic gas, provides
A kind of preparation method of photocatalysis shell powder paint.
In order to solve the above-mentioned technical problem, the technical scheme adopted by the invention is that:
The specific preparation step of photocatalysis shell powder paint are as follows:
It disperses polyethyleneimine, tetraethylenepentamine, bisphenol A type epoxy resin in the reaction kettle equipped with anhydrous methanol, heats
60~70 DEG C are warming up to, after solid dissolution in reaction kettle, sequentially adds silicone acrylic emulsion, the sepiolite that mass fraction is 20%
Powder, diatomite, conch meal, epoxidized soybean oil, charing rubber powder are dispersed with stirring to obtain photocatalysis shell powder paint；
Carbonize the specific preparation step of rubber powder are as follows:
(1) addition 40~50mL dehydrated alcohol and the wooden nano-cellulose of 2~3g into ultrasonic disperse instrument, ultrasonic disperse 4~
6min obtains cellulose suspension, and cellulose suspension is placed in the conical flask with blender, with dropping funel with 2~
18~20mL butyl titanate is added into conical flask for the drop rate of 3mL/min, while starting blender, with 200~300r/
The revolving speed of min starts 10~15min of stirring, obtains mixed liquor；
(2) 4~5mL acetic acid solution, 20~30mL silica solution are added in Xiang Shangshu mixed liquor, stirs 1~2h, obtains mixing molten
Glue is aged 2~3 days by 40~45g photocatalytic nanometer pipe carrier impregnation in mixed sols, obtains dry colloidal sol, dry colloidal sol is set
In the electric furnace that set temperature is 200~220 DEG C, 2~3h of micro- charing obtains charing blob of viscose, and charing blob of viscose is put into mortar
30~35min is ground, charing rubber powder is obtained；
The specific preparation step of wooden nano-cellulose are as follows:
By 120~150mL mass fraction be 20% sodium hydroxide solution and 50~60mL mass fraction be 20% sodium chlorite
Solution mixing is fitted into beaker, is added 70~80g aspen fibers by using silicon powder, is heated to 80~85 DEG C, 2~3h of isothermal holding,
Filtering removal filtrate obtains purifying cellulose, and purifying cellulose is made into the water slurry that mass fraction is 20%, is placed in ultrasonic wave
30~45min is handled with the frequency ultrasound of 30~35kHz in plant cell pulverizer, wooden nano-cellulose is made.
The raw material of photocatalysis shell powder paint, according to parts by weight, including 4~5 parts of polyethyleneimine, tetraethylenepentamine 7
~8 parts, 40~45 parts of bisphenol A type epoxy resin, 40~50 parts of anhydrous methanol, the silicone acrylic emulsion 40~45 that mass fraction is 20%
Part, 10~15 parts of sepiolite powder, 8~10 parts of diatomite, 40~50 parts of conch meal, 10~15 parts of epoxidized soybean oil, charing rubber powder
30~33 parts.
Photocatalysis shell powder paint can add titanium dioxide to improve photocatalysis performance.
The supersonic frequency for carbonizing ultrasonic disperse in the specific preparation step (1) of rubber powder is 30~33kHz.
Carbonizing acetic acid solution mass fraction in the specific preparation step (2) of rubber powder is 20%, silica solution mass fraction
It is 10%.
Carbonize the specific preparation step of photocatalytic nanometer pipe carrier in the specific preparation step (2) of rubber powder are as follows:
(1) according to parts by weight, galapectite powder, toluene, 3-mercaptopropyi trimethoxy silane are placed in three-necked flask, are heated
100~110 DEG C are warming up to, it is heated to reflux 20~for 24 hours, obtained reflux is filtered into removal filtrate, isolated solid is placed in
It is dried in vacuo under the conditions of 70~80 DEG C, obtains sulfhydrylation galapectite powder；
(2) hydrogen peroxide, distilled water, methanol that sulfhydrylation galapectite powder, mass fraction are 30% are mixed and is placed in single port bottle, obtained
To mixed liquor, 12~13h of oxidation reaction under conditions of magnetic agitation rotating speed is 300~400r/min at room temperature, then to single port
The chromium trichloride of residual mixed liquor quality 10% is added in bottle, chromaking reacts 10~12h, and filtering removal filtrate obtains filter residue, juxtaposition
In in vacuum oven, dry 4~5h, obtains photocatalytic nanometer pipe carrier under the conditions of 70~90 DEG C.
Sulfhydrylation galapectite powder raw material, according to parts by weight, including 20~30 parts of galapectite powder, 40~50 parts of toluene, 3-
20~25 parts of mercaptopropyi trimethoxy silane.
Hydrogen peroxide that sulfhydrylation galapectite powder, mass fraction are 30%, distilled water, methanol mixing mass ratio are 7 ︰, 4 ︰, 5 ︰ 3.
The beneficial effects of the present invention are:
(1) present invention reacts galapectite powder, toluene, 3-mercaptopropyi trimethoxy silane Hybrid Heating, obtains dredging baseization angstrom
Lip river mountain flour recycles hydrogen peroxide and methanol to aoxidize and dredges base galapectite powder, and vacuum drying obtains sulfonated galapectite powder, adds
Chromium trichloride chromaking obtains photocatalytic nanometer pipe carrier, and aspen fibers by using silicon powder is protected using sodium chlorite solution and sodium hydroxide solution
Temperature dipping, is separated by filtration to obtain purifying cellulose, purifying cellulose is configured to water slurry, is ultrasonically treated, is made wooden and receives
Rice cellulose, ethyl orthosilicate is mixed with dehydrated alcohol, dilute hydrochloric acid acidification hydrolization is added to obtain silicon dioxide gel, by anhydrous second
Alcohol is mixed with nano-cellulose, obtains nano-cellulose suspension through ultrasonic disperse, and metatitanic acid is added in nano-cellulose suspension
It in ethyl ester, is stirred to obtain mixed liquor, acetic acid, silica solution is added dropwise into mixed liquor, stirs to get mixed sols, by standing
Ageing, micro- charing, grinding obtain charing rubber powder, finally disperse aziridine, tetraethylenepentamine, bisphenol A type epoxy resin in
In anhydrous methanol, heating sequentially adds silicone acrylic emulsion, sepiolite powder, diatomite, conch meal, epoxy soybean after dissolving solid
Oil, charing rubber powder, obtain photocatalysis shell powder paint, and the present invention carries nano-cellulose charing back loading in photocatalytic nanometer pipe
On body, there is high-specific surface area, there is very strong adsorption capacity to gas trace heavy metal element and certain gas organic matters, it will
After it and the nano-titanium dioxide mixing with optics catalysis characteristics, generation synergistic effect and photosensitive between meeting and titania molecule
Effect, can be improved the photocatalytic activity of nano-titanium dioxide, and receptor of the nano-cellulose as electronics is easy to receive titanium dioxide
The light induced electron that titanium generates, to effectively inhibit compound, the raising organic poison of photocatalytic degradation of indoor in light induced electron and hole
The efficiency of evil gas；
(2) conch meal and photocatalytic nanometer pipe carrier provide cellular structure jointly in the present invention, and pass through polyethyleneimine, four
Five amine of ethylene it is aminated by they and silicone acrylic emulsion, epoxy resin dehydrating condensation, bonding is integral, wherein nano-titanium dioxide
Film can be formed in photocatalytic nanometer pipe carrier hole, photocatalytic nanometer pipe carrier can make the volatility of low concentration organic
Pollutant fast enriching, the organic pollutant concentration on nano-titanium dioxide surface of degrading, improves and imitates to indoor photochemical catalytic oxidation
Rate, hydrogen peroxide and methanol, which aoxidize thin base photocatalysis nano-tube support, keeps its sulfonated, and sulfonic group, which adsorbs polar contaminants, to be made
With obvious, while photocatalytic nanometer pipe carrier can be complexed using chromaking with the hydrate of nitrogen oxides, oxysulfide, to make
Chromium ion can improve adsorption rate in the organic toxic gas of low concentration in photocatalytic nanometer pipe carrier, in addition, by photocatalytic nanometer
Pipe carrier is doped in titanium dioxide forbidden band energy gap in mixed sols and narrows, and generates red shift, makes nano-titanium dioxide that wave can be absorbed
Long longer light, titanium dioxide shows stronger catalytic activity under visible light, energy more sensitive to organic gas volatile matter
Organic pollutant catalytic degradation concentration is enough reduced, thus shell powder paint of the invention is not simple to indoor organic toxic gas
Ground absorption, but degrade again after adsorbing enrichment, it so recycles, health environment-friendly has broad application prospects.
Specific embodiment
According to parts by weight, by 20~30 parts of galapectite powder, 40~50 parts of toluene, 20~25 parts of 3- mercaptopropyi trimethoxies
Base silane is placed in three-necked flask, is heated to 100~110 DEG C, it is heated to reflux 20~for 24 hours, obtained reflux is filtered
Filtrate is removed, isolated solid is dried in vacuo under the conditions of being placed in 70~80 DEG C, obtains sulfhydrylation galapectite powder；By sulfhydrylation
Galapectite powder, mass fraction are that 30% hydrogen peroxide, distilled water, methanol are that 7 ︰, 4 ︰, 5 ︰ 3 mixing is placed in single port bottle in mass ratio, are obtained
To mixed liquor, 12~13h of oxidation reaction under conditions of magnetic agitation rotating speed is 300~400r/min at room temperature, then to single port
The chromium trichloride of residual mixed liquor quality 10% is added in bottle, chromaking reacts 10~12h, and filtering removal filtrate obtains filter residue, juxtaposition
In in vacuum oven, dry 4~5h, obtains photocatalytic nanometer pipe carrier under the conditions of 70~90 DEG C；By 120~150mL matter
The sodium hydroxide solution that amount score is 20% is mixed with the sodium chlorite solution that 50~60mL mass fraction is 20% to be fitted into beaker,
70~80g aspen fibers by using silicon powder is added, is heated to 80~85 DEG C, 2~3h of isothermal holding, filtering removal filtrate is purified
Purifying cellulose is made into the water slurry that mass fraction is 20%, is placed in ultrasonic wave plant cell pulverizer with 30 by cellulose
The frequency ultrasound of~35kHz handles 30~45min, and wooden nano-cellulose is made；40~50mL is added into ultrasonic disperse instrument
Dehydrated alcohol and the wooden nano-cellulose of 2~3g disperse 4~6min with the frequency ultrasound of 30~33kHz, obtain cellulose suspension
Cellulose suspension is placed in the conical flask with blender by liquid, with dropping funel with the drop rate of 2~3mL/min to
18~20mL butyl titanate is added in conical flask, while starting blender, stirring 10 is started with the revolving speed of 200~300r/min
~15min, obtains mixed liquor；Acetic acid solution, the 20~30mL matter that 4~5mL mass fraction is 20% are added into above-mentioned mixed liquor
The silica solution that score is 10% is measured, 1~2h is stirred, obtains mixed sols, by 40~45g photocatalytic nanometer pipe carrier impregnation in mixed
It closes in colloidal sol, is aged 2~3 days, obtains dry colloidal sol, dry colloidal sol is placed in the electric furnace that set temperature is 200~220 DEG C, micro- charcoal
Change 2~3h, obtain charing blob of viscose, charing blob of viscose is put into 30~35min of grinding in mortar, obtains charing rubber powder；By weight
Number meter, disperses 4~5 parts of polyethyleneimines, 7~8 parts of tetraethylenepentamine, 40~45 parts of bisphenol A type epoxy resins in equipped with 40
In the reaction kettle of~50 parts of anhydrous methanols, 60~70 DEG C are heated to, after solid dissolution in reaction kettle, sequentially adds 40
~45 parts of mass fractions are 20% silicone acrylic emulsion, 10~15 parts of sepiolite powders, 8~10 parts of diatomite, 40~50 parts of conch meals, 10
~15 parts of epoxidized soybean oils, 30~33 parts of charing rubber powders are dispersed with stirring to obtain photocatalysis shell powder paint.
Embodiment 1
The preparation of sulfhydrylation galapectite powder:
According to parts by weight, 20 parts of galapectite powder, 40 parts of toluene, 20 parts of 3-mercaptopropyi trimethoxy silanes are placed in three mouthfuls of burnings
In bottle, 100 DEG C are heated to, 20h is heated to reflux, obtained reflux is filtered into removal filtrate, isolated solid is placed in
It is dried in vacuo under the conditions of 70 DEG C, obtains sulfhydrylation galapectite powder.
The preparation of photocatalytic nanometer pipe carrier:
By sulfhydrylation galapectite powder, mass fraction be 30% hydrogen peroxide, distilled water, methanol be in mass ratio 7 ︰, 4 ︰, 5 ︰ 3 mix be placed in
In single port bottle, mixed liquor is obtained, oxidation reaction 12h under conditions of magnetic agitation rotating speed is 300r/min, then Xiang Dan at room temperature
The chromium trichloride of residual mixed liquor quality 10% is added in mouth bottle, chromaking reacts 10h, and filtering removal filtrate obtains filter residue, is placed in
In vacuum oven, dry 4~5h, obtains photocatalytic nanometer pipe carrier under the conditions of 70 DEG C.
The preparation of wooden nano-cellulose:
The sodium hydroxide solution that 120mL mass fraction is 20% is mixed into dress with the sodium chlorite solution that 50mL mass fraction is 20%
Enter in beaker, add 70g aspen fibers by using silicon powder, is heated to 80 DEG C, isothermal holding 2h, filtering removal filtrate obtains pure chemical fiber
Dimension element, by purifying cellulose be made into mass fraction be 20% water slurry, be placed in ultrasonic wave plant cell pulverizer with
The frequency ultrasound of 30kHz handles 30min, and control supersonic frequency is 30kHz, and wooden nano-cellulose is made.
The preparation of mixed liquor:
40mL dehydrated alcohol and the wooden nano-cellulose of 2g are added into ultrasonic disperse instrument, is dispersed with the frequency ultrasound of 30kHz
4min obtains cellulose suspension, and cellulose suspension is placed in the conical flask with blender, with dropping funel with 2mL/
18mL butyl titanate is added into conical flask for the drop rate of min, while starting blender, is started with the revolving speed of 200r/min
10min is stirred, mixed liquor is obtained.
Carbonize the preparation of rubber powder:
The acetic acid solution that 4mL mass fraction is 20% is added into above-mentioned mixed liquor, the silica solution that 20mL mass fraction is 10%, stirs
1h is mixed, mixed sols is obtained, by 40g photocatalytic nanometer pipe carrier impregnation in mixed sols, is aged 2 days, obtains dry colloidal sol, it will
Dry colloidal sol is placed in the electric furnace that set temperature is 200 DEG C, micro- charing 2h, obtains charing blob of viscose, and charing blob of viscose is put into mortar
30min is ground, charing rubber powder is obtained.
The preparation of photocatalysis shell powder paint:
According to parts by weight, it disperses 4 parts of polyethyleneimines, 7 parts of tetraethylenepentamine, 40 parts of bisphenol A type epoxy resins in is equipped with
In the reaction kettle of 40 parts of anhydrous methanols, 60 DEG C are heated to, after solid dissolution in reaction kettle, sequentially adds 40 parts of quality
Score is 20% silicone acrylic emulsion, 10 parts of sepiolite powders, 8 parts of diatomite, 40 parts of conch meals, 10 parts of epoxidized soybean oils, 30 parts of charing glue
Powder is dispersed with stirring to obtain photocatalysis shell powder paint.
Embodiment 2
The preparation of sulfhydrylation galapectite powder:
According to parts by weight, 25 parts of galapectite powder, 45 parts of toluene, 23 parts of 3-mercaptopropyi trimethoxy silanes are placed in three mouthfuls of burnings
In bottle, 105 DEG C are heated to, 22h is heated to reflux, obtained reflux is filtered into removal filtrate, isolated solid is placed in
It is dried in vacuo under the conditions of 75 DEG C, obtains sulfhydrylation galapectite powder.
The preparation of photocatalytic nanometer pipe carrier:
By sulfhydrylation galapectite powder, mass fraction be 30% hydrogen peroxide, distilled water, methanol be in mass ratio 7 ︰, 4 ︰, 5 ︰ 3 mix be placed in
In single port bottle, mixed liquor is obtained, oxidation reaction 12h under conditions of magnetic agitation rotating speed is 350r/min, then Xiang Dan at room temperature
The chromium trichloride of residual mixed liquor quality 10% is added in mouth bottle, chromaking reacts 11h, and filtering removal filtrate obtains filter residue, is placed in
In vacuum oven, dry 4h, obtains photocatalytic nanometer pipe carrier under the conditions of 80 DEG C.
The preparation of wooden nano-cellulose:
The sodium hydroxide solution that 130mL mass fraction is 20% is mixed into dress with the sodium chlorite solution that 55mL mass fraction is 20%
Enter in beaker, add 75g aspen fibers by using silicon powder, is heated to 83 DEG C, isothermal holding 2h, filtering removal filtrate obtains pure chemical fiber
Dimension element, by purifying cellulose be made into mass fraction be 20% water slurry, be placed in ultrasonic wave plant cell pulverizer with
The frequency ultrasound of 33kHz handles 37min, and control supersonic frequency is 33kHz, and wooden nano-cellulose is made.
The preparation of mixed liquor:
45mL dehydrated alcohol and the wooden nano-cellulose of 2g are added into ultrasonic disperse instrument, is dispersed with the frequency ultrasound of 32kHz
5min obtains cellulose suspension, and cellulose suspension is placed in the conical flask with blender, with dropping funel with 2mL/
19mL butyl titanate is added into conical flask for the drop rate of min, while starting blender, is started with the revolving speed of 250r/min
13min is stirred, mixed liquor is obtained.
Carbonize the preparation of rubber powder:
The acetic acid solution that 4mL mass fraction is 20% is added into above-mentioned mixed liquor, the silica solution that 25mL mass fraction is 10%, stirs
1h is mixed, mixed sols is obtained, by 43g photocatalytic nanometer pipe carrier impregnation in mixed sols, is aged 2 days, obtains dry colloidal sol, it will
Dry colloidal sol is placed in the electric furnace that set temperature is 210 DEG C, micro- charing 2h, obtains charing blob of viscose, and charing blob of viscose is put into mortar
33min is ground, charing rubber powder is obtained.
The preparation of photocatalysis shell powder paint:
According to parts by weight, it disperses 4 parts of polyethyleneimines, 7 parts of tetraethylenepentamine, 43 parts of bisphenol A type epoxy resins in is equipped with
In the reaction kettle of 45 parts of anhydrous methanols, 65 DEG C are heated to, after solid dissolution in reaction kettle, sequentially adds 43 parts of quality
Score is 20% silicone acrylic emulsion, 13 parts of sepiolite powders, 9 parts of diatomite, 45 parts of conch meals, 13 parts of epoxidized soybean oils, 31 parts of charing glue
Powder is dispersed with stirring to obtain photocatalysis shell powder paint.
Embodiment 3
The preparation of sulfhydrylation galapectite powder:
According to parts by weight, 30 parts of galapectite powder, 50 parts of toluene, 25 parts of 3-mercaptopropyi trimethoxy silanes are placed in three mouthfuls of burnings
In bottle, 110 DEG C are heated to, is heated to reflux for 24 hours, obtained reflux is filtered into removal filtrate, isolated solid is placed in
It is dried in vacuo under the conditions of 80 DEG C, obtains sulfhydrylation galapectite powder.
The preparation of photocatalytic nanometer pipe carrier:
By sulfhydrylation galapectite powder, mass fraction be 30% hydrogen peroxide, distilled water, methanol be in mass ratio 7 ︰, 4 ︰, 5 ︰ 3 mix be placed in
In single port bottle, mixed liquor is obtained, oxidation reaction 13h under conditions of magnetic agitation rotating speed is 400r/min, then Xiang Dan at room temperature
The chromium trichloride of residual mixed liquor quality 10% is added in mouth bottle, chromaking reacts 12h, and filtering removal filtrate obtains filter residue, is placed in
In vacuum oven, dry 5h, obtains photocatalytic nanometer pipe carrier under the conditions of 90 DEG C.
The preparation of wooden nano-cellulose:
The sodium hydroxide solution that 150mL mass fraction is 20% is mixed into dress with the sodium chlorite solution that 60mL mass fraction is 20%
Enter in beaker, add 80g aspen fibers by using silicon powder, is heated to 85 DEG C, isothermal holding 3h, filtering removal filtrate obtains pure chemical fiber
Dimension element, by purifying cellulose be made into mass fraction be 20% water slurry, be placed in ultrasonic wave plant cell pulverizer with
The frequency ultrasound of 35kHz handles 45min, and control supersonic frequency is 35kHz, and wooden nano-cellulose is made.
The preparation of mixed liquor:
50mL dehydrated alcohol and the wooden nano-cellulose of 3g are added into ultrasonic disperse instrument, is dispersed with the frequency ultrasound of 33kHz
6min obtains cellulose suspension, and cellulose suspension is placed in the conical flask with blender, with dropping funel with 3mL/
20mL butyl titanate is added into conical flask for the drop rate of min, while starting blender, is started with the revolving speed of 300r/min
15min is stirred, mixed liquor is obtained.
Carbonize the preparation of rubber powder:
The acetic acid solution that 5mL mass fraction is 20% is added into above-mentioned mixed liquor, the silica solution that 30mL mass fraction is 10%, stirs
2h is mixed, mixed sols is obtained, by 45g photocatalytic nanometer pipe carrier impregnation in mixed sols, is aged 3 days, obtains dry colloidal sol, it will
Dry colloidal sol is placed in the electric furnace that set temperature is 220 DEG C, micro- charing 3h, obtains charing blob of viscose, and charing blob of viscose is put into mortar
35min is ground, charing rubber powder is obtained.
The preparation of photocatalysis shell powder paint:
According to parts by weight, it disperses 5 parts of polyethyleneimines, 8 parts of tetraethylenepentamine, 45 parts of bisphenol A type epoxy resins in is equipped with
In the reaction kettle of 50 parts of anhydrous methanols, 70 DEG C are heated to, after solid dissolution in reaction kettle, sequentially adds 45 parts of quality
Score is 20% silicone acrylic emulsion, 15 parts of sepiolite powders, 10 parts of diatomite, 50 parts of conch meals, 15 parts of epoxidized soybean oils, 33 parts of charings
Rubber powder is dispersed with stirring to obtain photocatalysis shell powder paint.
Comparative example 1: it is essentially identical with the preparation method of embodiment 1, it has only the difference is that wooden nano-cellulose is not added.
Comparative example 2: it is essentially identical with the preparation method of embodiment 2, it has only the difference is that charing rubber powder is not added.
Comparative example 3: the shell powder paint of Changchun company production.
Shell powder paint in photocatalysis shell powder paint produced by the present invention and comparative example is detected, testing result
It is as shown in table 1:
Shell powder paint made from each embodiment and comparative example and water 2 ︰ 1 in mass ratio are sufficiently mixed, film is in wall of cementing
On face, after its drying, its properties is surveyed.
Adhesive force test
It is measured according to JG/T24-2000 method, 0 grade preferably, and 1 grade is taken second place.
Impact resistance test
It is measured using impact tester, punch diameter is 0.5 inch, and bear a heavy burden 500g, and 50cm square impact observes film situation.
The test of Degradation Formaldehyde rate
Coating is applied to inside closed container, two sides light transmission, after fully absorbing formaldehyde, is placed in illumination 8h under natural light, surveys formaldehyde
Degradation rate.
Anion concentration test
It is measured using ore anion test instrument.
1 performance measurement result of table
| Test item | Embodiment 1 | Embodiment 2 | Embodiment 3 | Comparative example 1 | Comparative example 2 | Comparative example 3 |
| Appearance | It is flat and smooth | It is flat and smooth | It is flat and smooth | It is smooth | It is smooth | It is smooth |
| Adhesive force | 0 grade | 0 grade | 0 grade | 1 grade | 2 grades | 1 grade |
| Impact resistance | Film no cracking | Film no cracking | Film no cracking | The cracking of film small area | The cracking of film small area | Film no cracking |
| Scrubbing resistance number | > 1000 times | > 1000 times | > 1000 times | > 750 times | > 730 times | > 800 times |
| Alkali resistance | 48h is without exception | 48h is without exception | 48h is without exception | 30h is without exception | 35h is without exception | 40h is without exception |
| Formaldehyde absorbing rate (%) | 87.4 | 88.1 | 88.5 | 75.5 | 64.2 | 78.9 |
| Degradation Formaldehyde rate (%) | 76.4 | 76.8 | 77.2 | 64.5 | 57.3 | 68.6 |
| Anion burst size (a/m3) | > 12000 | > 12000 | > 12000 | > 7500 | > 7400 | > 1000 |
From the data in table 1, it can be seen that photocatalysis shell powder paint produced by the present invention, partial size is small, and brush is felt, and adhesive force is strong, shock resistance
It has excellent performance, is not easy to lose powder, scrubbing resistance, the absorption of PARA FORMALDEHYDE PRILLS(91,95) and degradation rate are high, and the coating is free of solvent, safety and environmental protection, makes
It is long with the service life, there is wide prospect of the application.
Claims (8)
1. a kind of preparation method of photocatalysis shell powder paint, it is characterised in that specific preparation step are as follows:
It disperses polyethyleneimine, tetraethylenepentamine, bisphenol A type epoxy resin in the reaction kettle equipped with anhydrous methanol, heats
60~70 DEG C are warming up to, after solid dissolution in reaction kettle, sequentially adds silicone acrylic emulsion, the sepiolite that mass fraction is 20%
Powder, diatomite, conch meal, epoxidized soybean oil, charing rubber powder are dispersed with stirring to obtain photocatalysis shell powder paint；
The specific preparation step of the charing rubber powder are as follows:
(1) addition 40~50mL dehydrated alcohol and the wooden nano-cellulose of 2~3g into ultrasonic disperse instrument, ultrasonic disperse 4~
6min obtains cellulose suspension, and cellulose suspension is placed in the conical flask with blender, with dropping funel with 2~
18~20mL butyl titanate is added into conical flask for the drop rate of 3mL/min, while starting blender, with 200~300r/
The revolving speed of min starts 10~15min of stirring, obtains mixed liquor；
(2) 4~5mL acetic acid solution, 20~30mL silica solution are added in Xiang Shangshu mixed liquor, stirs 1~2h, obtains mixing molten
Glue is aged 2~3 days by 40~45g photocatalytic nanometer pipe carrier impregnation in mixed sols, obtains dry colloidal sol, dry colloidal sol is set
In the electric furnace that set temperature is 200~220 DEG C, 2~3h of micro- charing obtains charing blob of viscose, and charing blob of viscose is put into mortar
30~35min is ground, charing rubber powder is obtained；
The specific preparation step of the wooden nano-cellulose are as follows:
By 120~150mL mass fraction be 20% sodium hydroxide solution and 50~60mL mass fraction be 20% sodium chlorite
Solution mixing is fitted into beaker, is added 70~80g aspen fibers by using silicon powder, is heated to 80~85 DEG C, 2~3h of isothermal holding,
Filtering removal filtrate obtains purifying cellulose, and purifying cellulose is made into the water slurry that mass fraction is 20%, is placed in ultrasonic wave
30~45min is handled with the frequency ultrasound of 30~35kHz in plant cell pulverizer, wooden nano-cellulose is made.
2. a kind of preparation method of photocatalysis shell powder paint according to claim 1, it is characterised in that: the light is urged
Change the raw material of shell powder paint, according to parts by weight, including 4~5 parts of polyethyleneimine, 7~8 parts of tetraethylenepentamine, bisphenol A-type
40~45 parts of epoxy resin, 40~50 parts of anhydrous methanol, 40~45 parts of the silicone acrylic emulsion that mass fraction is 20%, sepiolite powder 10
~15 parts, 8~10 parts of diatomite, 40~50 parts of conch meal, 10~15 parts of epoxidized soybean oil, 30~33 parts of rubber powder of charing.
3. a kind of preparation method of photocatalysis shell powder paint according to claim 1, it is characterised in that: the light is urged
Titanium dioxide can be added to improve photocatalysis performance by changing shell powder paint.
4. a kind of preparation method of photocatalysis shell powder paint according to claim 1, it is characterised in that: the charing
The supersonic frequency of ultrasonic disperse is 30~33kHz in the specific preparation step (1) of rubber powder.
5. a kind of preparation method of photocatalysis shell powder paint according to claim 1, it is characterised in that: the charing
Acetic acid solution mass fraction is 20% in the specific preparation step (2) of rubber powder, silica solution mass fraction
It is 10%.
6. a kind of preparation method of photocatalysis shell powder paint according to claim 1, it is characterised in that: the charing
The specific preparation step of photocatalytic nanometer pipe carrier in the specific preparation step (2) of rubber powder are as follows:
(1) according to parts by weight, galapectite powder, toluene, 3-mercaptopropyi trimethoxy silane are placed in three-necked flask, are heated
100~110 DEG C are warming up to, it is heated to reflux 20~for 24 hours, obtained reflux is filtered into removal filtrate, isolated solid is placed in
It is dried in vacuo under the conditions of 70~80 DEG C, obtains sulfhydrylation galapectite powder；
(2) hydrogen peroxide, distilled water, methanol that sulfhydrylation galapectite powder, mass fraction are 30% are mixed and is placed in single port bottle, obtained
To mixed liquor, 12~13h of oxidation reaction under conditions of magnetic agitation rotating speed is 300~400r/min at room temperature, then to single port
The chromium trichloride of residual mixed liquor quality 10% is added in bottle, chromaking reacts 10~12h, and filtering removal filtrate obtains filter residue, juxtaposition
In in vacuum oven, dry 4~5h, obtains photocatalytic nanometer pipe carrier under the conditions of 70~90 DEG C.
7. a kind of preparation method of photocatalysis shell powder paint according to claim 6, it is characterised in that: the sulfydryl
Change galapectite powder raw material, according to parts by weight, including 20~30 parts of galapectite powder, 40~50 parts of toluene, 3- mercaptopropyi front three
20~25 parts of oxysilane.
8. a kind of preparation method of photocatalysis shell powder paint according to claim 6, it is characterised in that: sulfhydrylation angstrom Lip river
Hydrogen peroxide that mountain flour, mass fraction are 30%, distilled water, methanol mixing mass ratio are 7 ︰, 4 ︰, 5 ︰ 3.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437720A (en) * | 2019-07-19 | 2019-11-12 | 浙江天成工程设计有限公司 | A kind of indoor harmful gas absorbent-type aqueous polyurethane coating and preparation method thereof |
| CN111167415A (en) * | 2020-01-08 | 2020-05-19 | 广东海洋大学 | Formaldehyde adsorption material and preparation method and application thereof |
-
2019
- 2019-01-28 CN CN201910079424.4A patent/CN109852196A/en not_active Withdrawn
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110437720A (en) * | 2019-07-19 | 2019-11-12 | 浙江天成工程设计有限公司 | A kind of indoor harmful gas absorbent-type aqueous polyurethane coating and preparation method thereof |
| CN110437720B (en) * | 2019-07-19 | 2021-01-08 | 浙江天成工程设计有限公司 | Indoor harmful gas adsorption type waterborne polyurethane coating and preparation method thereof |
| CN111167415A (en) * | 2020-01-08 | 2020-05-19 | 广东海洋大学 | Formaldehyde adsorption material and preparation method and application thereof |
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