CN1970492A - Cement base material of humidity-self-regulation - Google Patents
Cement base material of humidity-self-regulation Download PDFInfo
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- CN1970492A CN1970492A CN 200610119520 CN200610119520A CN1970492A CN 1970492 A CN1970492 A CN 1970492A CN 200610119520 CN200610119520 CN 200610119520 CN 200610119520 A CN200610119520 A CN 200610119520A CN 1970492 A CN1970492 A CN 1970492A
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- cement
- humidity
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- based material
- superplasticizer
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Abstract
The invention discloses a cement basic material with self-adjusting wetness, which is composed of 30-45% cement, 0.3-20% porous adsorbing material, 0.05-1% cement particle dispersing superplasticisers and 45-65% quartz sand. The invention can release water under dry environment, which adjusts air wetness and improves air quality without secondary pollution.
Description
Technical field
The present invention relates to a kind of cement-based material, specifically a kind of cement-based material that carries out moisture control by absorption and release water vapour.
Background technology
Humidity is one of important factor that influences the living environment comfort level, through studies show that the suitableeest humidity environment of human body is between 40～60%.Whether the mode of regulating humidity according to consumes energy, can be divided into active and passive type.The former is an air-conditioning technical, is the method that generally adopts at present, consume a large amount of electric energy, pollutes the environment and destroys ecology, causes serious IAQ (indoor air quality) problem, does not meet STRATEGIES OF SUSTAINABLE DEVELOPMENT.Passive type then is to adopt the moisture adsorption and releasing Characteristics Control of recyclable materials to regulate humidity, need not to consume the artificial energy source, meets the viewpoint of Green Chemistry.The mechanism of action of humidity adjusting material is when relative humidity surpasses certain limit, stores moisture thereby can absorb moisture, when humidity is lower than setting range, can discharge moisture.
Separate in the wet performance material in the existing suction of China, liquid desiccant can be diluted by rainwater or take away, and can not reuse, and also may cause environmental pollution; And the solid moisture absorbent existence form is comparatively stable.Select suitable recyclable materials can prevent from environment is caused secondary pollution, therefore, the solid-state physics humidity adjusting material is ideal selection.Good characteristics such as the porosity height that porous material has, specific surface area are big, excellent adsorption have satisfied the requirement as humidity adjusting material.Porous materials such as zeolite, Attapulgite and sepiolite are physical adsorption for the absorption of moisture, satisfied reproducible requirement, these porous material admixtures are gone among the cement-base composite material, moisture enters matrix material by the macrovoid in the cement-based material earlier under the high humidity environment, be stored in again among the pore of porous material, when humidity was low, moisture discharged again.
Summary of the invention
The purpose of this invention is to provide that a kind of raw material sources are extensive, technology is simple, the cement-based material of lower-cost humidity-self-regulation, it can play the effect that makes environmental purification, comfortableization, and non-secondary pollution; Cost is moderate, and is easy to use, preparation technology is simple.
The object of the present invention is achieved like this:
A kind of cement-based material of humidity-self-regulation, it is by the flour that cement, cement granules disperse superplasticizer, quartz sand and porous adsorbing material to form through mixed preparing, and its each component concentration is (by weight percentage): cement 30～45%, porous adsorbing material 0.3～20%, cement granules disperse superplasticizer 0.05～1%, quartz sand 45～65%.
Described quartz sand particle size is 80～120 orders.
Described porous adsorbing material is a kind of or its several mixing in zeolite, Attapulgite, sepiolite and the diatomite.
Described porous adsorbing material particle diameter is 300～400 orders, and specific surface area is 100～300m
2/ g.
The aperture of described porous adsorbing material is 1～30nm, and pore volume is 0.05～1.0cc/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.
Described acrylic acid series comb-shaped polymer is a kind of copolymer A, wherein the weight-average molecular weight of copolymer A is 2000～50000, it be by be 50～95% alkoxyl group polyalkylene glycol (methyl) acrylate (I) by weight be (methyl) vinylformic acid (II) of 5～40% by weight but and be the multipolymer that other monomer (III) of 0～30% copolymerization forms by weight.
Described allyl polyether is that comb-shaped polymer is a kind of multipolymer B, wherein the weight-average molecular weight of multipolymer B is 2000～50000, it be by be the thiazolinyl polyalkylene glycol ethers class monomer (I) of C2～C8 of 50～95% by weight be 5～40% unsaturated carboxylic acid class monomer (II) by weight but and be the multipolymer that other monomer (III) of 0～30% copolymerization prepares by weight.
The present invention adopts methods such as acidleach or heating that porous material is carried out modification to enlarge the specific surface area of porous material, increases the water storage of porous material.Good characteristics such as the porosity height that porous material has, specific surface area are big, excellent adsorption have satisfied the requirement as humidity adjusting material.Porous materials such as zeolite, Attapulgite and sepiolite are physical adsorption for the absorption of moisture, satisfied reproducible requirement, these porous material admixtures are gone among the cement-base composite material, moisture enters matrix material by the macrovoid in the cement-based material earlier under the high humidity environment, be stored in again among the pore of porous material, when humidity was low, moisture discharged again.In addition, introducing cement granules disperses superplasticizer that flowing property, dispersing property and the workability of cement-based material are protected.
The present invention compares with other cement-based material, and maximum difference is that it has the humidity-self-regulation function, and has superior wear resisting property.The present invention has utilized the macrovoid of cement-based material to absorb water for the first time under high humidity environment, after moisture enters hole, being compounded in porous material among the cement-based material just brings into play the function of pore suction and can store moisture, under dry environment, the moisture that cement-based material stores will discharge to regulate atmospheric moisture.Therefore moisture control effect of the present invention is common realization of pore by the macrovoid and the porous material of cement-based material.The present invention can be used as body of wall and earth material, and is applicable to the various places of indoor and outdoor, is particularly useful for southern high humidity environment.
Embodiment
Cement used in the present invention (A) is label 42.5 ordinary Portland cements, and porous adsorbing material (B) is zeolite, Attapulgite, sepiolite or diatomaceous one or more mixing, its median size 300～400 orders, and specific surface area is 100～300m
2/ g, the aperture is 1～30nm, and pore volume is 0.05～1.0cc/g, and 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 (C); Used quartz sand (D) particle diameter is the 80-120 order.
Preparation technology is as follows:
1, gets component A and B component 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 component C and component D more successively in proportion, start mixing machine, stirred 3～4 hours, stop behind the thorough mixing;
3, the finished product that mixes is packed.
Embodiment
Provide following examples 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 | 37.48 | 32.92 | 36.94 | 33.38 | 36.63 | 38.60 |
| Zeolite | - | 7.32 | - | - | - | 3.73 |
| Sepiolite | - | - | 3.69 | - | 7.33 | - |
| Diatomite | - | - | - | 14.38 | - | 1.45 |
| Attapulgite | 0.38 | - | - | - | 1.83 | 0.37 |
| Polycarboxylic acid super-plasticizer | 0.16 | 0.65 | 0.66 | - | - | 0.25 |
| Beta-naphthalenesulfonic-acid formaldehyde condensation compound | - | - | - | 0.21 | 0.98 | 0.18 |
| The sulfonated melamine compound condenses | - | - | - | 0.30 | - | - |
| Quartz sand | 61.98 | 59.11 | 58.71 | 51.73 | 53.23 | 55.42 |
Thereby the present invention can regulate the relative humidity of air by accumulating moisture, and it is remained between the 40-60%, can prevent effectively that under high humidity environment germ from growing or dry environment in the discomfort of human body, can build comfortable pleasant living environment.Long service life of the present invention simultaneously, the use of can regenerating, and non-secondary pollution meet the standard of green environment; Cost is moderate, and is easy to use, preparation technology is simple.The present invention being made the sample piece, place enclosed space, is that humidity can drop to 55% after 6 hours under 90% the high humidity environment in relative humidity.
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 loose spot etc.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 of the present invention are put into measured clear water, slowly add powder body material of the present invention again, fully stir with electric mixer low speed, the limit of falling the powder, limit is stirred to even nothing caking, forms the slurry of 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, a kind of cement-based material of humidity-self-regulation, it is characterized in that it is the flour that disperses superplasticizer, quartz sand and porous adsorbing material to form through mixed preparing by cement, cement granules, its each component concentration is (by weight percentage): cement 30～45%, porous adsorbing material 0.3～20%, cement granules disperse superplasticizer 0.05～1%, quartz sand 45～65%.
2, the cement-based material of humidity-self-regulation according to claim 1 is characterized in that described quartz sand particle size is 80～120 orders.
3, the cement-based material of humidity-self-regulation according to claim 1 is characterized in that described porous adsorbing material is a kind of or its several mixing in zeolite, Attapulgite, sepiolite and the diatomite.
4, the cement-based material of humidity-self-regulation according to claim 3 is characterized in that described porous adsorbing material particle diameter is 300～400 orders, and specific surface area is 100～300m
2/ g.
5, the cement-based material of humidity-self-regulation according to claim 3, the aperture that it is characterized in that described porous adsorbing material is 1～30nm, pore volume is 0.05～1.0cc/g.
6, the cement-based material of humidity-self-regulation 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, the cement-based material of humidity-self-regulation 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 |
|---|---|---|---|
| CN 200610119520 CN1970492A (en) | 2006-12-13 | 2006-12-13 | Cement base material of humidity-self-regulation |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200610119520 CN1970492A (en) | 2006-12-13 | 2006-12-13 | Cement base material of humidity-self-regulation |
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| Publication Number | Publication Date |
|---|---|
| CN1970492A true CN1970492A (en) | 2007-05-30 |
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|---|---|---|---|
| CN 200610119520 Pending CN1970492A (en) | 2006-12-13 | 2006-12-13 | Cement base material of humidity-self-regulation |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386971A (en) * | 2014-09-22 | 2015-03-04 | 沈礼群 | Wall body cement with characteristics of adsorption decontamination, high bonding and environmental protection, and preparation method thereof |
| CN105510405A (en) * | 2015-12-15 | 2016-04-20 | 济南大学 | Capacitive cement-based humidity sensitive element and preparing method thereof |
| CN104386971B (en) * | 2014-09-22 | 2017-01-04 | 沈礼群 | A kind of body of wall high bonding environment protecting cement of absorption scrubbing |
| CN116119988A (en) * | 2022-12-21 | 2023-05-16 | 四川大学 | Moisture-regulating reinforcing mortar for raw soil wall surface and preparation method thereof |
-
2006
- 2006-12-13 CN CN 200610119520 patent/CN1970492A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104386971A (en) * | 2014-09-22 | 2015-03-04 | 沈礼群 | Wall body cement with characteristics of adsorption decontamination, high bonding and environmental protection, and preparation method thereof |
| CN104386971B (en) * | 2014-09-22 | 2017-01-04 | 沈礼群 | A kind of body of wall high bonding environment protecting cement of absorption scrubbing |
| CN105510405A (en) * | 2015-12-15 | 2016-04-20 | 济南大学 | Capacitive cement-based humidity sensitive element and preparing method thereof |
| CN105510405B (en) * | 2015-12-15 | 2018-05-08 | 济南大学 | A kind of capacitor type cement base dew cell and preparation method thereof |
| CN116119988A (en) * | 2022-12-21 | 2023-05-16 | 四川大学 | Moisture-regulating reinforcing mortar for raw soil wall surface and preparation method thereof |
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