CN1451706A - Photocatalysis fluorocarbon resin nanopaint and process for preparing same - Google Patents

Photocatalysis fluorocarbon resin nanopaint and process for preparing same Download PDF

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Publication number
CN1451706A
CN1451706A CN 02109488 CN02109488A CN1451706A CN 1451706 A CN1451706 A CN 1451706A CN 02109488 CN02109488 CN 02109488 CN 02109488 A CN02109488 A CN 02109488A CN 1451706 A CN1451706 A CN 1451706A
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fluorocarbon resin
nano
photo catalytic
coating
resin coating
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CN1181151C (en
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刘福春
韩恩厚
柯伟
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Zhongke Nanotech Coating (Shuzhou) Co., Ltd.
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Institute of Metal Research of CAS
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Abstract

A nano photocatalytic fluorocarbon resin paint is composed of modified synthetic resin and solidifying agent. Said modified synthetic resin is prepared through adding nano slurry to the solution of synthetic resin, mixing with solvent and pigment, grinding, and filtering. Its advantages are high stability and photocatalyzing efficiency of its coated layer, and excellent weatherability.

Description

A kind of nano-photo catalytic fluorocarbon resin coating and preparation method thereof
Technical field
The present invention relates to coating technology, be specially a kind of fluorocarbon resin coating and preparation method thereof with photo-catalysis function.
Background technology
Along with industry is fast-developing, brought severe contamination to environment, as the pollution to water such as organophosphorus pesticide, aromatic amine based compound, chlorine series solvent, benzene series solvent, oxynitride (NO x) and oxysulfide (SO x) to the pollution of air.These objectionable impuritiess are very big to the murder by poisoning of human body, and the objectionable impurities of these lower concentrations is what be difficult for to eliminate, and are relatively stable.Find the TiO of raying since Fujishima 2Since the lasting oxidation and reduction reaction of surface energy generation to water, people have studied the light-catalyzed reaction of N-type semiconductor material.Now confirmed TiO 2, ZnO, CdS, SnO 2, WO 3, Fe 2O 3Deng, all have photo-catalysis function, utilize these materials under the irradiation of sunlight or UV-light, can remove water or harmful substances in air.TiO wherein 2It is good to have chemical stability, nontoxic, can not produce the characteristics of secondary pollution.Nano level TiO 2Because specific surface area is big, the active site of surface adsorption objectionable impurities is many, therefore than general micron-sized TiO 2Has bigger photocatalytic activity.Use the suspended state reactor to purify waste water or air nano-TiO 2Particle reclaims difficulty, wastes bigger.Photocatalyst is made coated material, can enlarge the Application Areas of nanoparticle degraded objectionable impurities.
It is the tabular scavenging material of usefulness fluoro-resin fixed of main photocatalyst by titanium dioxide, activated carbon that the flat 6-315614 of Japanese Patent Te Open discloses a kind of, fluoro-resin is a polytetrafluorethylepowder powder, make the 0.5-1mm plate by the heating calendering formation, can purify the oxynitride of tens ppm.But when practical application, often need the plate that contains photocatalytic particle to be fixed on buildings or other material surface, use very inconvenient with binding agent.International monopoly WO97/00134 discloses a kind of photochemical catalysis carrier structure and photocatalysis coating material, and this photochemical catalysis carrier structure is by photocatalyst layer, carrier, intermediate adhesive layer.Photocatalysis layer is made up of metal oxide sol or metal hydroxides colloidal sol and photocatalyst powder or colloidal sol.But intermediate adhesive layer and photocatalysis layer must heat and could solidify.Chinese patent CN1224036A discloses a kind of titanium sol-gel paint with photocatalytic activity.This coating also need solidify 100-500 ℃ of ability, is unsuitable for applying on low plastics of thermotolerance or the fabric.
Summary of the invention
The purpose of this invention is to provide a kind of have good weatherability properties energy and the photoactive nano-photo catalytic fluorocarbon resin coating of photochemical catalysis and preparation method thereof.
Technical scheme of the present invention is: a kind of nano-photo catalytic fluorocarbon resin coating is made of matching used synthetic resins and solidifying agent two-pack, synthetic resins is one or more of fluorocarbon resin of hydroxyl, solidifying agent is the isocyanates solidifying agent, described synthetic resins is modified synthetic resin, by weight percentage, modified synthetic resin is by the solvent composition of 1-80% nanometer slurry, 15-70% synthetic resins, 0-30% pigment, surplus; The proportioning of solidifying agent and modified synthetic resin is pressed NCO: OH=0.8-1.3: 1 mol ratio;
Described nanometer slurry refers to the Nanos type nanometer slurry of Metal Inst., Chinese Academy of Sciences's development, and nanometer slurry content in modified synthetic resin is preferably 10-50%;
Described solvent is one or more of aliphatic hydrocarbon, aromatic hydrocarbon, ester class, ketone, terpene, replacement hydro carbons.Wherein aliphatic solvents refer to sherwood oil, No. 200 solvent oils, raffinate oil, butane, Skellysolve A, iso-pentane, isohexane, normal hexane, normal heptane, isoheptane, octane, octane-iso; Aromatic hydrocarbon solvent refers to benzene,toluene,xylene, Three methyl Benzene, Solvesso100, Solvesso150, Solvesso200, solvent naphtha, ethylbenzene, isopropyl benzene; Ketones solvent refers to acetone, methylethylketone, mibk, pimelinketone, isophorone, diacetone alcohol, metacetone, methyl propyl ketone; Esters solvent refers to vinyl acetic monomer, n-butyl acetate, isobutyl acetate, capryl acetate, acetic acid heptyl ester, acetic acid ester in the last of the ten Heavenly stems, n-Butyl lactate, methoxyacetic acid propyl ester; Terpene type solvent refers to turps, pine tar, kautschin; Replace varsol and refer to trichloroethane, 2-nitropropane; Solvent is No. 200 solvent oils, Skellysolve A, iso-pentane, isohexane, normal hexane, normal heptane, isoheptane, toluene, dimethylbenzene, Three methyl Benzene, Solvesso100, Solvesso150, Solvesso200, solvent naphtha, methylethylketone, mibk, pimelinketone, isophorone, vinyl acetic monomer, n-butyl acetate, isobutyl acetate, methoxyacetic acid propyl ester, trichloroethane preferably;
Described pigment is selected from one of titanium dioxide, china clay, ground barium sulfate, GL ground limestone, precipitated calcium carbonate, talcum powder, quartz, cadmium yellow, chrome yellow, strontium yellow, zinc-chrome yellow, four basic zinc Huangs, middle chrome green, dark chrome green, chromoxide green, phthalocyanine green, cadmium red, toluidine red, red iron oxide, iron oxide yellow, iron oxide black, graphite, phthalocyanine blue, ultramarine, Chinese blue, red lead, yellow lead, carbon black, zinc powder, aluminium powder, lithopone or composite.
In the nano-photo catalytic fluorocarbon resin coating of the present invention, employed synthetic resins, can be selected from the fluorocarbon resin of Japan AGC Zhu Shi commercial firm commodity Lumiflon by name, as Lumiflon LF-100, Lumiflon LF-200, Lumiflon LF-400 etc., the ザ Off ロ Application trade mark fluorocarbon resin of Japan East Asia synthetic chemistry company, the Ford of the new chemical industry of Xi'an Le Jia company limited Fluorocarbon resin, the FEVE type fluorocarbon resin of Mingzhan fluorin coating stock Co., Ltd., Dalian city; Can be selected from the Desmodur of Bayer (Bayer) company as the curing agent component of nano-photo catalytic fluorocarbon resin coating N75, Desmodur N100, Desmodur N3390, Desmodur N3300, Desmodur VPLS 2010/1, Desmodur VPLS 2103, Desmodur Z4470; The Tolonate of France inferior (Rhodia) company in sieve ground TMHDB-75MX, Tolonate TMHDT-90; CORONATE 2604, CORONATE HX-T, CORONATE2384, the CORONATE HK of Japan fluorocarbon resin Co., Ltd..The proportioning of curing agent component and modified synthetic resin component is NCO: OH=0.8-1.3: 1 (mol ratio).
The present invention also provides the preparation method of above-mentioned nano-photo catalytic fluorocarbon resin coating, and its process is as follows:
1) preparation modified synthetic resin: by weight percentage, at first 1-80% nanometer slurry is added in the 15-70% synthetic resin solution, the solvent that adds 0-30% pigment, surplus again mixes, disperseed 10-60 minute with high speed dispersor 400-3000rpm, ground 20 minutes-25 hours, and made the modified synthetic resin component of nano-photo catalytic fluorocarbon resin coating after filtering;
2) preparation coating: the proportioning of solidifying agent and modified synthetic resin is pressed NCO: OH=0.8-1.3: 1 mol ratio uniform mixing, promptly form the nano-photo catalytic fluorocarbon resin coating.
Nano-photo catalytic fluorocarbon resin coating mixing of the present invention and grinding dispersing apparatus are the common equipments in the paint manufacturing process, comprise high speed dispersor, sand mill, ball mill and ball mill.
Advantage of the present invention is as follows:
1. the present invention has proposed to adopt the method for nanometer slurry to prepare the nano-photo catalytic fluorocarbon resin coating first, employed nanometer slurry is that the nano powder that main particle diameter by stable dispersion is generally less than 100nm is formed, this method makes nano material easier dispersion in coating, nano material and solvent have been solved well, the compatibility issue of resin Composition, it is more stable that the nano-photo catalytic fluorocarbon resin coating is stored.
2. homodisperse nanoparticle easily is filled in the hole or the pore of coating, improves the permeability resistance of coating, has improved the chemical proofing and the weathering resistance of coating.
3. the present invention is very easy to produce chemical bonding with the coating or the film of organism or metallic substrate surface because the specific surface area of nanoparticle is big, and surfactivity is big, thereby makes the sticking power raising of the coating made by nanoparticle and base material.
4. the photocatalysis efficiency height of nano-photo catalytic fluorocarbon resin coating of the present invention.
5. nano-photo catalytic fluorocarbon resin coating of the present invention can ambient cure, also can be heating and curing, and can arbitrarily select as required.It is very convenient to construct, and can spray, brushing, dip-coating, roller coating etc.The thickness of coating also can be adjusted according to dope viscosity.
6. applied widely.Nano-photo catalytic fluorocarbon resin coating of the present invention also has the function of harmful organic substance in the degradation water except the provide protection that pair metal, plastics, woodenware, paper, fabric glass etc. are arranged, remove NO in the air x, SO xFunction Deng pollutent.
Embodiment
Unless outside specializing among the present invention, related ratio all is weight percentage.
The evaluation method of nano-photo catalytic fluorocarbon resin coat-thickness: coating dry film thickness is measured with the 6000FN1 type thickness tester of U.S. DeFelsko company, gets 5 mean values, and measuring error is at ± 2 μ m.
The evaluation method of nano-photo catalytic fluorocarbon resin coating adhesion: GB9286-88 tests by GB.
Nano-photo catalytic fluorocarbon resin coating is pressed GB/T 1865-1997 3000 hours artificial weathering of continuous illumination experiment on the Ci3000 ageing device of U.S. Atlas Electric Devices company, and weathering resistance is carried out the Comprehensive Assessment grade according to GB1766-1995 and estimated.
The evaluation method of photocatalytic activity: take by weighing same amount 10mg/L methyl orange solution (absorbancy that absorbs maximum value wavelength 490nm place is about 0.75) and put into several Φ 90mm glass culture dishs, put into the different coating sample respectively, after 0.5 hour, measure the variation of the absorbancy of methyl orange solution in the different glass culture dish with commercially available 20W (predominant wavelength is 253.7nm) ultraviolet-sterilization light irradiation respectively with day UV-265 ultraviolet spectrophotometer of island proper Tianjin company.The photocatalytic activity of nano-photo catalytic fluorocarbon resin coating can be weighed with the degradation rate of tropeolin-D.Degradation rate calculates by following formula (1):
The used nanometer slurry of preparation nano-photo catalytic fluorocarbon resin coating is starched for the Nanos type nanometer of Metal Inst., Chinese Academy of Sciences's development, its preparation method is as follows: take by weighing methylethylketone 80g, trichloroethane 10g in the 500ml beaker, add 10g macromolecule dispersing agent Disperbykl07 (German Bi Ke chemical company), add the 50nm stearic acid again and coat the anatase-type nanometer titanium dioxide 100g that handles, after disperseing 20 minutes with high speed dispersor 1000rpm, ground 18 hours with sand mill, make the nano titanium oxide weight ratio and be 50% nano titanium dioxide paste.
Embodiment 1
In the beaker of 300ml, claim 50gLumiflon LF-100 fluorocarbon resin, add Nanos type nanometer slurry 40g, add china clay 2g, precipitated calcium carbonate 2g, talcum powder 1g then, add 2g toluene, 2g methylethylketone, 1g vinyl acetic monomer again, more than mixing paint vehicle disperseed 20 minutes with high speed dispersor 1500rpm, ground 5 hours with sand mill then, be prepared into the modified synthetic resin component after filtering with 200 order copper mesh at last; Curing agent component is Desmudur N75; Solidifying agent and modified synthetic resin component two components are pressed NCO: OH=1: 1 (mol ratio) proportioning, stirring the back uses spreader to be coated with this nano-photo catalytic fluorocarbon resin coating on through oil removing, except that the LY12 aluminium alloy plate of the 50mm * 50mm * 1mm after the water treatment, behind the sample Air drying of coating composition, making build is the coating sample of 10 ± 2 μ m.
Embodiment 2
In the beaker of 300ml, claim 50g Lumiflon LF-200 fluorocarbon resin.Add Nanos type nanometer slurry 5g, add china clay 2g, precipitated calcium carbonate 2g, talcum powder 1g then, add 25g toluene, 10g methylethylketone, 5g vinyl acetic monomer again, more than mixing paint vehicle disperseed 20 minutes with high speed dispersor 1500rpm, ground 5 hours with sand mill then, be prepared into the modified synthetic resin component after filtering with 200 order copper mesh at last; Curing agent component is Tolonate TMHDT-90; Solidifying agent and modified synthetic resin component two components are pressed NCO: OH=1: 1 (mol ratio) proportioning, stirring the back uses spreader to be coated with this nano-photo catalytic fluorocarbon resin coating on through oil removing, except that the LY12 aluminium alloy plate of the 50mm * 50mm * 1mm after the water treatment, behind the sample Air drying of coating composition, making build is the coating sample of 10 ± 2 μ m.
Embodiment 3
In the beaker of 300ml, claim the 35g Ford Fluorocarbon resin.Add Nanos type nanometer slurry 60g, add china clay 2g, precipitated calcium carbonate 2g, talcum powder 1g then, more than mix paint vehicle and disperseed 20 minutes, ground 5 hours with sand mill then, be prepared into the modified synthetic resin component after filtering with 200 order copper mesh at last with high speed dispersor 1500rpm; Curing agent component is CORONATE HX-T; Solidifying agent and modified synthetic resin component two components are pressed NCO: OH=1: 1 (mol ratio) proportioning, the stirring back uses line rod spreader to be coated with this nano-photo catalytic fluorocarbon resin coating on through oil removing, except that the LY12 aluminium alloy plate of the 50mm * 50mm * 1mm after the water treatment, behind the sample Air drying of coating composition, making build is the coating sample of 10 ± 2 μ m.
Comparative example 1
Claim that in the beaker of 300ml 50gLumiflon LF-100 fluorocarbon resin is the synthetic resins component, add china clay 2g, precipitated calcium carbonate 2g, talcum powder 1g, add 30g toluene, 10g methylethylketone, 5g vinyl acetic monomer then, more than mixing paint vehicle disperseed 20 minutes with high speed dispersor 1500rpm, ground 5 hours with sand mill then, be prepared into the synthetic resins component after filtering with 200 order copper mesh at last; Curing agent component is Desmudur N75; Solidifying agent and synthetic resins component are pressed NCO: OH=1: 1 (mol ratio) proportioning, stirring the back uses spreader to be coated with this fluorocarbon resin coating on through oil removing, except that the LY12 aluminium alloy plate of the 50mm * 50mm * 1mm after the water treatment, behind the sample Air drying of coating composition, making build is the contrast coating sample of 10 ± 2 μ m.Table 1
Nanometer slurry (%) in the modified synthetic resin Absorbancy Photocatalysis efficiency (%) Sticking power (level) Weathering resistance (level)
Before the illumination After the illumination
Embodiment 1 ????40 ??0.75 ??0.05 ????93.3 ????0 ????0
Embodiment 2 ????5 ??0.75 ??0.08 ????89.3 ????0 ????0
Embodiment 3 ????60 ??0.75 ??0 ????100 ????1 ????1
Comparative example 1 ????0 ??0.75 ??0.71 ????5.3 ????0 ????0
Table 1 is the nano-photo catalytic fluorocarbon resin coating of different N anos type nanometer slurry content.As shown in Table 1, the photocatalysis efficiency of nano-photo catalytic fluorocarbon resin coating is greater than 89.3%; And there is not the photocatalysis efficiency of the fluorocarbon resin coating of Nanos type nanometer slurry is 5.3%.The photocatalysis efficiency of nano-photo catalytic fluorocarbon resin coating is more than 17 times of fluorocarbon resin coating that do not have Nanos type nanometer slurry approximately.
In addition, the Nanos type nanometer of embodiment 1 slurry content is in the 10-50% scope, and coating photocatalysis efficiency, coating adhesion and weathering resistance are very good.The Nanos type nanometer slurry content of embodiment 2 is less than 10%, though coating adhesion and weathering resistance are better, photocatalysis efficiency is lower slightly.The Nanos type nanometer slurry content of embodiment 3 is greater than 50%, though photocatalysis efficiency is very high, coating adhesion and weathering resistance slightly descend.

Claims (6)

1, a kind of nano-photo catalytic fluorocarbon resin coating, constitute by matching used synthetic resins and solidifying agent two-pack, synthetic resins is the fluorocarbon resin of hydroxyl, solidifying agent is the isocyanates solidifying agent, it is characterized in that: described synthetic resins is modified synthetic resin, by weight percentage, modified synthetic resin is by the solvent composition of 1-80% nanometer slurry, 15-70% synthetic resins, 0-30% pigment, surplus; The proportioning of solidifying agent and modified synthetic resin is pressed NCO: OH=0.8-1.3: 1 mol ratio.
2, according to the described nano-photo catalytic fluorocarbon resin coating of claim 1, it is characterized in that: described nanometer slurry is Nanos type nanometer slurry, and content is 10-50%.
3, according to the described nano-photo catalytic fluorocarbon resin coating of claim 1, it is characterized in that: described solvent is one or more of aliphatic hydrocarbon, aromatic hydrocarbon, ester class, ketone, terpene, replacement hydro carbons.
4, according to the described nano-photo catalytic fluorocarbon resin coating of claim 3, it is characterized in that: described solvent is a sherwood oil, No. 200 solvent oils, raffinate oil, butane, Skellysolve A, iso-pentane, isohexane, normal hexane, normal heptane, isoheptane, octane, octane-iso, benzene, toluene, dimethylbenzene, Three methyl Benzene, Solvesso100, Solvesso150, Solvesso200, solvent naphtha, ethylbenzene, isopropyl benzene, acetone, methylethylketone, mibk, pimelinketone, isophorone, diacetone alcohol, metacetone, methyl propyl ketone, vinyl acetic monomer, n-butyl acetate, isobutyl acetate, capryl acetate, the acetic acid heptyl ester, acetic acid ester in the last of the ten Heavenly stems, n-Butyl lactate, the methoxyacetic acid propyl ester, turps, pine tar, kautschin, trichloroethane, one of 2-nitropropane or composite.
5, according to the described nano-photo catalytic fluorocarbon resin coating of claim 1, it is characterized in that: described pigment is one of titanium dioxide, china clay, ground barium sulfate, GL ground limestone, precipitated calcium carbonate, talcum powder, quartz, cadmium yellow, chrome yellow, strontium yellow, zinc-chrome yellow, four basic zinc Huangs, middle chrome green, dark chrome green, chromoxide green, phthalocyanine green, cadmium red, toluidine red, red iron oxide, iron oxide yellow, iron oxide black, graphite, phthalocyanine blue, ultramarine, Chinese blue, red lead, yellow lead, carbon black, zinc powder, aluminium powder, lithopone or composite.
6, a kind of preparation method according to the described nano-photo catalytic fluorocarbon resin coating of one of claim 1-5 is characterized in that process is as follows:
1) preparation modified synthetic resin: by weight percentage, at first 1-80% nanometer slurry is added in the 15-70% synthetic resin solution, the solvent that adds 0-30% pigment, surplus again mixes, disperseed 10-60 minute with 400-3000rpm speed, ground 20 minutes-25 hours, and made the modified synthetic resin component of nano-photo catalytic fluorocarbon resin coating after filtering;
2) preparation coating: the proportioning of solidifying agent and modified synthetic resin is pressed NCO: OH=0.8-1.3: 1 mol ratio uniform mixing, promptly form the nano-photo catalytic fluorocarbon resin coating.
CNB021094888A 2002-04-17 2002-04-17 Photocatalysis fluorocarbon resin nanopaint and process for preparing same Expired - Fee Related CN1181151C (en)

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Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1304502C (en) * 2004-06-23 2007-03-14 宁波艾利特科技发展有限公司 Curing nanometer building paint from fluoride carbon resin at normal temperature and production thereof
CN1313820C (en) * 2004-09-28 2007-05-02 张金龙 Photocatalyst active detection method with optical catalyst material
WO2012055308A1 (en) * 2010-10-25 2012-05-03 江苏考普乐新材料股份有限公司 Photoelectrochemicalmethod on metal preservation
CN105419602A (en) * 2015-12-18 2016-03-23 中国铁道科学研究院铁道建筑研究所 Normal-temperature curable fluorocarbon coating for corrosion prevention and preparation method of fluorocarbon coating
CN105419601A (en) * 2015-12-18 2016-03-23 中国铁道科学研究院铁道建筑研究所 Room temperature cured fluorocarbon coating modified with nano particles and preparation method of room temperature cured fluorocarbon coating
CN106939135A (en) * 2017-04-18 2017-07-11 汪礼军 A kind of preparation method based on nano-titanium dioxide modified self-cleaning antibacterial coating

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CN101177582B (en) * 2006-11-09 2012-07-25 深圳市海川实业股份有限公司 Road surface coating capable of absorbing decomposing automobile exhaust and preparation method thereof
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1304502C (en) * 2004-06-23 2007-03-14 宁波艾利特科技发展有限公司 Curing nanometer building paint from fluoride carbon resin at normal temperature and production thereof
CN1313820C (en) * 2004-09-28 2007-05-02 张金龙 Photocatalyst active detection method with optical catalyst material
WO2012055308A1 (en) * 2010-10-25 2012-05-03 江苏考普乐新材料股份有限公司 Photoelectrochemicalmethod on metal preservation
US9371589B2 (en) 2010-10-25 2016-06-21 Jiangsu Kfcc New Materials Co., Ltd. Surface modified nano-scaled titanium dioxide, preparation process thereof, coating containing the same, and photoelectrochemical method for metal preservation using the coating
CN105419602A (en) * 2015-12-18 2016-03-23 中国铁道科学研究院铁道建筑研究所 Normal-temperature curable fluorocarbon coating for corrosion prevention and preparation method of fluorocarbon coating
CN105419601A (en) * 2015-12-18 2016-03-23 中国铁道科学研究院铁道建筑研究所 Room temperature cured fluorocarbon coating modified with nano particles and preparation method of room temperature cured fluorocarbon coating
CN105419601B (en) * 2015-12-18 2018-01-30 中国铁道科学研究院铁道建筑研究所 A kind of nanometer particle-modified normal temperature solidifying fluorine-carbon coating and preparation method thereof
CN106939135A (en) * 2017-04-18 2017-07-11 汪礼军 A kind of preparation method based on nano-titanium dioxide modified self-cleaning antibacterial coating

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