CN100361924C - Nano-photo catalytic cement base ground material - Google Patents
Nano-photo catalytic cement base ground material Download PDFInfo
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- CN100361924C CN100361924C CNB2005100282352A CN200510028235A CN100361924C CN 100361924 C CN100361924 C CN 100361924C CN B2005100282352 A CNB2005100282352 A CN B2005100282352A CN 200510028235 A CN200510028235 A CN 200510028235A CN 100361924 C CN100361924 C CN 100361924C
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Abstract
The present invention discloses a kind of nano photocatalytic cement base ground material. It is a powdered material which is made up by using (by wt%) 1-20% of photocatalysis material, 20-50% of cement, 5-30% of porous adsorption material, 0.02-1% of cement granules dispersion super plasticizer and 40-70% of quartz sand. It is characterized by that said invention utilizes a porous material and makes the photocatalyst be loaded on said porous material, so that it can raise the contact area of photocatalyst with air, and can adsorb follow-up formed acid. Said invention can effectively remove harmful organics and car tail gas, sterilize, eliminate abnormal smell and clean air.
Description
Technical field
The present invention relates to a kind of earth material, specifically a kind of nano-photo catalytic cement base ground material.
Background technology
The human habitat pollution situation is on the rise in recent years, motor vehicle exhaust goes out a large amount of harmful organic substances and oxynitride, various finishing material also volatilize many harmful organic substances, reduce the Air quality that people are rely and breathed greatly, bring grave danger for people's life and health, develop green technology efficient, energy-conservation, non-secondary pollution and be subjected to people's attention day by day.The nano titanium dioxide photocatalysis effect was revealed in 1972, and purposes such as that the free radical that utilizes nano titanium dioxide photocatalysis to produce is used for is antibiotic, purifying air and water purification are considered to a revolution in environmental protection field.The characteristics of this technology are easy to operate, non-secondary pollutions, have wide practical use, and its key is to organically combine with various material of construction to use.
Japanese Patent JP2003286063 discloses and a kind of nano titanium oxide has been applied to the technology of cement-based material, and this technology is that photocatalysis titanium dioxide is particle loaded on zeolite or porous silica material, with material preparation such as other hydraulic material.Because generate nitric acid after the oxynitride oxidation, this method is used for the area of heavy rainfull more, and relatively stricter to the requirement of illumination.
Summary of the invention
The objective of the invention is to avoid above-mentioned the deficiencies in the prior art, provide that a kind of raw material sources are extensive, technology is simple, lower-cost nano-photo catalytic cement base ground material.
The object of the present invention is achieved like this:
A kind of nano-photo catalytic cement base ground material, it is the flour that disperses superplasticizer, quartz sand, nano-photocatalyst material and porous adsorbing material to form through mixed preparing by cement, cement granules, and its each component concentration is (by weight percentage): nano-photocatalyst material 1～20%, cement 20～50%, porous adsorbing material 5～30%, cement granules disperse superplasticizer 0.02～1%, quartz sand 40～70%.
Described nano-photocatalyst material is rutile type nano titanic oxide or nanometer anatase titania or both mix mode nano titanium oxides.
Described quartz sand particle size is 80～120 orders.
Described porous adsorbing material is a kind of or its several mixing in zeolite, clay, silicon-dioxide, the sepiolite.
Described porous adsorbing material particle diameter is 300～400 orders, and specific surface area is 300～500m
2/ g.
Described cement granules dispersion superplasticizer is a kind of or its several mixing in polycarboxylic acid superplasticizer, beta-naphthalenesulfonic-acid formaldehyde condensation compound or the sulfonated melamine compound condenses.
Described polycarboxylic acid superplasticizer is that acrylic acid series comb-shaped polymer or allyl polyether are one or both mixing in the comb-shaped polymer.
As photo catalytic cement base ground material, at first must have good photocatalysis performance, general photocatalyst material needs sun direct projection just can excite its activity, locally use restrictedly in that indoor and sunlight conditions is not overabundant, therefore adopt the titanium dioxide of various forms or photosensitization technology to improve its performance.Secondly, after photocatalyst material decomposes sulfurous gas and oxynitride, form objectionable impuritiess such as sulfuric acid and nitric acid, must adopt effective means to adsorb these objectionable impuritiess, reduce its corrosion terrace, provide the activity of photocatalyst material, the acid that therefore adopts porous material absorption to generate.In addition, the adding of photocatalyst material can reduce flowing property, dispersing property and the workability of cement-based material to a certain extent, therefore must introduce cement granules and disperse superplasticizer to improve the performance of this respect.
The difference of the present invention and other earth material maximum is that it has air-cleaning function and superior wear resisting property.Photocatalyst titanium dioxide has been owing to adopted technical finesse, UV-irradiation required lower, even visible light can excite its activity, therefore can be used on indoor place, as the underground parking etc.In addition, titanium dichloride load is on porous material, utilize the characteristic of its high surface area, can effectively improve its photocatalysis efficiency, the acidic substance that porous material produces in can the absorb light catalytic process, and can under conditions suitable, discharge, can effectively solve the problem that the acidic substance that produce in the photocatalytic process destroy building material surface.
Embodiment
Nano-photocatalyst material used herein (A) is rutile type nano titanic oxide, nanometer anatase titania or both mix mode nano titanium oxides, and cement (B) is label 42.5 ordinary Portland cements.Porous adsorbing material (C) is one or more mixing of zeolite, clay, silicon-dioxide or sepiolite, and its median size is 300～400 orders, and specific surface area is 300～500m
2/ g, it is one or more mixing of polycarboxylic acid superplasticizer, beta-naphthalenesulfonic-acid formaldehyde condensation compound or sulfonated melamine compound condenses that cement granules disperses superplasticizer (D).Used quartz sand (E) particle diameter is the 80-120 order.
Preparation technology is as follows:
1, gets component A and component C in proportion and insert (with the conical twin-screw mixer best results) in the mixing machine, start mixing machine, stirred 60～90 minutes, make its thorough mixing;
2, add B component, component D and component E more successively in proportion, start mixing machine, stirred 3～4 hours, stop behind the thorough mixing;
3, the finished product that mixes is packed.
Provide following embodiment in conjunction with content of the present invention
Because the difference of application scenario, air conditions also can change to some extent, therefore provides various prescriptions, uses according to practical situation, and various prescriptions are listed in the table below:
| Composition | Prescription | |||||
| 1 | 2 | 3 | 4 | 5 | 6 | |
| Portland cement | 35.11 | 34.44 | 31.21 | 27.87 | 31.14 | 33.86 |
| Titanium dioxide | 3.00 | 5.17 | 7.80 | 11.61 | 8.64 | 9.87 |
| Zeolite | 9.00 | 4.30 | - | 4.64 | - | 8.75 |
| Sepiolite | - | 12.91 | 12.48 | 8.58 | 6.47 | - |
| Porous silica | - | - | 6.24 | 4.64 | 6.72 | 3.42 |
| Polycarboxylic acid super-plasticizer | 0.02 | 0.03 | 0.03 | 0.04 | - | - |
| Beta-naphthalenesulfonic-acid formaldehyde condensation compound | - | - | 0.02 | 0.06 | 0.08 | - |
| The sulfonated melamine compound condenses | - | - | - | - | - | 0.07 |
| Quartz sand | 52.87 | 43.15 | 42.22 | 42.56 | 46.95 | 44.03 |
The present invention not only PARA FORMALDEHYDE PRILLS(91,95), benzene series obnoxious flavour has good Degradation, and can be with NOx a large amount of in the motor vehicle emission tail gas and SO
2Remove Deng gas cyaniding and final formation acid, therefore the effect that significantly purifies air is arranged, also have the function of disinfection simultaneously.The present invention is based on cement base ground material, in having fine pores of nano-order sizes, specific surface area is big with photoactivated titanium dichloride load, on the strong porous material of adsorptivity, and it is sneaked in the cement base ground material, add powdered cement particles dispersed superplasticizer simultaneously and improve its workability; It can effectively be removed harmful organic substance, vehicle exhaust, sterilization, elimination peculiar smell, purify air, and non-secondary pollution; Cost is moderate, and is easy to use, preparation technology is simple.This material is made the sample piece, place enclosed space, can be with formaldehyde wherein, benzene series is shown harmful gas and is eliminated, and its clearance is greater than 80%.
Using method:
1, base treatment: determine that basic unit is solid smooth, no hollowing, cleaning is clean on the basal surface, no greasy dirt, glued membrane agent, floating dust and spot such as loose.Substrate defects should be repaired in advance, has projection then to even out, cleans with clear water.
2, stirring/construction: in appropriate containers, 15～25% weight ratios with powder body material are put into measured clear water, after slowly add the powder body material prepare again, fully stir with electric mixer low speed, the limit of falling the powder, limit is stirred to even nothing caking, the slurry of formation, good fluidity; After leaving standstill 3-5 minute, can use after forming thick shape in restir 1-2 minute, the slurry of mixing be poured on the construction surface, or used the shotcrete machine operation, lay smooth with special tool again; After construction is finished, avoided high wind to blow in 24 hours, burning sun shines, vibrations or scratch (preserving period is different because of the difference of temperature humidity condition).
Claims (7)
1. nano-photo catalytic cement base ground material, it is characterized in that it is the flour that disperses superplasticizer, quartz sand, nano-photocatalyst material and porous adsorbing material to form through mixed preparing by cement, cement granules, its each component concentration is (by weight percentage): nano-photocatalyst material 1～20%, cement 20～50%, porous adsorbing material 5～30%, cement granules disperse superplasticizer 0.02～1%, quartz sand 40～70%.
2. nano-photo catalytic cement base ground material according to claim 1 is characterized in that described nano-photocatalyst material is rutile type nano titanic oxide or nanometer anatase titania or both mix mode nano titanium oxides.
3. nano-photo catalytic cement base ground material according to claim 1 is characterized in that described quartz sand particle size is 80～120 orders.
4. nano-photo catalytic cement base ground material according to claim 1 is characterized in that described porous adsorbing material is a kind of or its several mixing in zeolite, clay, silicon-dioxide, the sepiolite.
5. nano-photo catalytic cement base ground material according to claim 4 is characterized in that described porous adsorbing material particle diameter is 300～400 orders, and specific surface area is 300～500m
2/ g.
6. nano-photo catalytic cement base ground material according to claim 1 is characterized in that described cement granules dispersion superplasticizer is a kind of or its several mixing in polycarboxylic acid superplasticizer, beta-naphthalenesulfonic-acid formaldehyde condensation compound or the sulfonated melamine compound condenses.
7. nano-photo catalytic cement base ground material according to claim 6 is characterized in that described polycarboxylic acid superplasticizer is that acrylic acid series comb-shaped polymer or allyl polyether are one or both mixing in the comb-shaped polymer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100282352A CN100361924C (en) | 2005-07-28 | 2005-07-28 | Nano-photo catalytic cement base ground material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100282352A CN100361924C (en) | 2005-07-28 | 2005-07-28 | Nano-photo catalytic cement base ground material |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1903780A CN1903780A (en) | 2007-01-31 |
| CN100361924C true CN100361924C (en) | 2008-01-16 |
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| CNB2005100282352A Expired - Fee Related CN100361924C (en) | 2005-07-28 | 2005-07-28 | Nano-photo catalytic cement base ground material |
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Families Citing this family (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101348628B (en) * | 2008-09-17 | 2011-05-18 | 中国建筑材料科学研究总院 | Thick coating material purifying air and preparing method thereof |
| CN101704641B (en) * | 2009-11-23 | 2012-03-07 | 浙江大学 | Preparation method of nano-photocatalytic admixture for cement-based material |
| CN102503211B (en) * | 2011-12-01 | 2015-06-17 | 宝鸡锦润材料科技发展有限公司 | Cement concrete and swelling agent thereof, and preparation method of swelling agent |
| CN105884396B (en) * | 2016-01-21 | 2018-09-11 | 盐城工学院 | A kind of photocatalysis concrete material and preparation method thereof being coated with titanium dioxide/active zeolite composite material |
| CN110344566A (en) * | 2019-07-12 | 2019-10-18 | 陕西安迪地坪装饰工程有限公司 | A kind of superhard terrace laying method of nano environmental protection polymer rapid hardening |
| CN111888934A (en) * | 2020-06-22 | 2020-11-06 | 常德集智生物科技有限公司 | Treating agent for decomposing motor vehicle exhaust and preparation method and application thereof |
| CN112919860A (en) * | 2021-01-22 | 2021-06-08 | 大连理工大学 | Cement-based composite material with antimicrobial erosion performance |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000233134A (en) * | 1999-02-12 | 2000-08-29 | Taiheiyo Cement Corp | Photocatalyst supporting composition |
| JP2001064072A (en) * | 1999-08-27 | 2001-03-13 | Taiheiyo Cement Corp | Cement composition |
| JP2003286063A (en) * | 2002-03-28 | 2003-10-07 | Taiheiyo Cement Corp | Photocatalyst carrying composition and structure formed by using the same |
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2005
- 2005-07-28 CN CNB2005100282352A patent/CN100361924C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000233134A (en) * | 1999-02-12 | 2000-08-29 | Taiheiyo Cement Corp | Photocatalyst supporting composition |
| JP2001064072A (en) * | 1999-08-27 | 2001-03-13 | Taiheiyo Cement Corp | Cement composition |
| JP2003286063A (en) * | 2002-03-28 | 2003-10-07 | Taiheiyo Cement Corp | Photocatalyst carrying composition and structure formed by using the same |
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| CN1903780A (en) | 2007-01-31 |
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