CN100357210C - Cement based self moisture control architechture material and its prepn. process - Google Patents
Cement based self moisture control architechture material and its prepn. process Download PDFInfo
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- CN100357210C CN100357210C CNB2005100243964A CN200510024396A CN100357210C CN 100357210 C CN100357210 C CN 100357210C CN B2005100243964 A CNB2005100243964 A CN B2005100243964A CN 200510024396 A CN200510024396 A CN 200510024396A CN 100357210 C CN100357210 C CN 100357210C
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Abstract
The present invention relates to a building material capable of automatically adjusting indoor humidity by utilizing the adsorption and the release of vapor and the preparation method thereof. The cement-based building material with the function of automatically adjusting humidity has the following constituents with the weight percentage: 10-50 % of diatomite, 0-30% of meerschaum, 0.01-0.2% of alkyl surfactant, 15-40% of cement, 0-20% of quartz sand, 0-2% of water reducing agent, 1-5% of alcohol activating agent, 0-1% of inorganic antibacterial agent and 20-45% of water. The preparation method of the present invention has the following steps that all the constituents are weighed according to the weight percentage firstly, the minerals of the diatomite and the meerschaum which are preprocessed are then processed with the method of surface activation, and the weighed constituents are added and then stirred together so as to prepare fluxible plastic slurry; finally the slurry is poured in a testing mould in a certain shape, the slurry is conserved after vibrated, condensed and leveled to shape, and the desired cement-based building material with the function of automatically adjusting humidity can be prepared after demoulding.
Description
Technical field
The present invention relates to by water vapor adsorption and discharge material of construction and preparation method thereof the field of humidity in the surge chamber voluntarily.
Background technology
As everyone knows, the relative humidity of human survival optimum environment is between 40～70%, and indoor relative humidity often is subjected to the influence of extraneous weather (as rainy season and dry season) and change.Control for indoor relative humidity, if adopt the method for machinery, control relative humidity as air-conditioning system, must the requirement of total system building structure be improved, and the day and night running of facility investment, machinery and the aspect both expensive such as consumption of energy thereof, do not meet the strategy of sustainable development, and it also seems powerless on control short space humidity.Therefore, research and development can produce the very meaningful from humidity adjusting material of performances such as absorption, desorb automatically to indoor water vapour under the different humidity condition.
Be not meant and need rely on the moisture absorption and desorption property of self from humidity adjusting material, respond to the variation of the space atmospheric moisture of transferring, regulate the material of relative air humidity automatically by any artificial energy source and mechanical means.Utilizing the moisture adsorption and releasing characteristic of humidity adjusting material to control, regulate humidity, is a kind of passive type ecological property method, need not to consume Nonrenewable energy resources.At present, mainly be divided into two classes as humidity adjusting material: a class is to utilize damping salt as the damping base material, and this class comprises inorganic salts and organic resin class.Another kind of is to utilize porous mediums such as timber, gypsum, zeolite powder as the damping base material, is patents such as humidity-controlling functional material as a kind of sepiolite type natural mineral series active drying agent of notification number CN 1367035A Chinese patent and manufacturing process thereof, Chinese patent 1295493A with the particulate porous body of aluminum oxide.At present, the many of development and application both at home and abroad is the second class humidity adjusting material, but on the performance of production technique and material itself, also not ideal as damping capacity, damping responsiveness etc.
Summary of the invention
Purpose of the present invention just provides the concrete base building material that a kind of damping capacity is big, the damping responsiveness is regulated indoor air humidity soon, automatically.
A further object of the invention just provides the concrete base building preparation methods of above-mentioned automatic adjusting indoor air humidity.
Concrete base building material with automatic humidifying function of the present invention, its weight percentages is as follows:
Diatomite 10～50%, sepiolite 0～30%, alkyl surfactants 0.01～0.2%, cement 1 5～40%, quartz sand 0～20%, water reducer 0～2%, alcohols promoting agent 1～5%, inorganic antiseptic 0～1%, water 20-45%.
Concrete base building material with automatic humidifying function of the present invention, its component optimum weight per-cent is as follows:
Diatomite 10～25%, sepiolite 2～20%, alkyl surfactants 0.05～0.1%, cement 20～40%, quartz sand 10～20%, water reducer 0.5～1.5%, alcohols promoting agent 1～3%, inorganic antiseptic 0～1%, water 20-45%.
Wherein, described diatomite mineral are optional pure with quality, diatom content height, and the algae complete form, foreign matter content is little, the diatomite that porosity is high.
The sepiolite group mineral comprise sepiolite, attapulgite or Palygorskite.
Described alkyl surfactants comprises sodium lauryl sulphate, sodium laurylsulfonate, preferably sodium dodecyl sulfate.
Described cement can be selected silicate cement, ordinary Portland cement, slag cement, pulverized fuel ash cement or complex cement for use, and strength grade all should be more than 32.5.Preferred ordinary Portland cement or silicate cement.
Described quartz sand can adopt common yellow ground or river sand, should pass through art breading such as washing, oven dry, and particle diameter and grain composition should meet between the 40-100 order.
Described water reducer comprises naphthalene sulfonic acidformaldehyde condensation product water reducer, calcium lignin sulfonate water depressor, sodium lignin sulfonate water reducer, melamine water reducing agent, sulfamate water reducer or polycarboxylate water-reducer etc.; Water reducer can be powder or liquid, should consider the content of its water solvent when selecting liquid for use.Preferred powder naphthalene sulfonic acidformaldehyde condensation product water reducer or liquid polycarboxylate water-reducer.
The optional spent glycol of described alcohols promoting agent, neopentyl glycol, alkanol etc., preferred neopentyl glycol.
Described inorganic antiseptic comprises rare earth activated inorganic antiseptic agent, silver-based inorganic antibacterial agent or glassiness inorganic antiseptic, preferred silver-based inorganic antibacterial agent.
The preparation method of cement based self moisture control architechture material of the present invention comprises the following steps: at first by above-mentioned weight percent weighing each component, again pretreated diatomite, scpiolitc are carried out surface activation process, then above-mentioned load weighted each component and pretreated diatomite, scpiolitc are stirred together, prepare flowable plasticity slurry, at last slip is poured in the die trial of definite shape, vibrate, maintenance after closely knit, the moulding of wiping one's face, form removal can be prepared into required cement based self moisture control architechture material.
The pre-treatment of diatomite of the present invention, scpiolitc is meant selects for use drying, diatomite that purity is high, sepiolite to be processed into the mineral powder through disintegrating process, and fineness is controlled at the 100-300 order.In order further to improve the microvoid structure of diatomite, scpiolitc, also can adopt the acid-wash activation pretreatment technology, after promptly using the diluted mineral acid aqueous solution to its pickling, activate 6～24 hours down, again the slurry of preparing is carried out drying, powder to above-mentioned fineness at 80～300 ℃.
The surface activation process of diatomite of the present invention, scpiolitc is meant technology such as mesoporous surface activating process and microporous foam technology, soon the aqueous solution of alcohols promoting agent is poured in diatomite, the scpiolitc and is fully stirred, and deposits several minutes and gets final product.By such surface activating process, can reduce the surface tension of the microvoid structure of diatomite, scpiolitc inside greatly, thereby improve the wettability power of material greatly.
Maintenance of the present invention be meant send into relative humidity greater than 50%, temperature is not less than in 15 ℃ the environment and carried out natural curing 1 day, also can adopt steam-cured mode, quickens maintenance.
Cement based self moisture control architechture material of the present invention can be prepared into self moisture control architechture materials such as difform body of wall, sheet material according to selected mould difference.According to the environment of applications condition,, can obtain needed performance by adjusting weight part proportioning of the present invention and preparation method.
Compared with prior art, the invention has the beneficial effects as follows:
1. compare with existing general damping material of construction, cement based self moisture control architechture material of the present invention has good in the damping function, and promptly the damping capacity is big, and the damping response speed is fast.
2. after diatomite, scpiolitc passed through pre-treatment, surperficial acidifying activation treatment among the present invention, its internal microcellular structure was optimized more, and the micropore of 3-50nm increases, and has improved its wettability power.
3. the present invention adopts technology such as mesoporous surface activating process, microporous foam technology, admixture alcohols promoting agent, in self moisture control architechture material, introduce a large amount of minute apertures, and the aperture is communicated with, the micropore surface of introducing has stronger wetting ability, surface tension reduces, and improves the ability of ambient moisture in the material surge chamber greatly.
4. the present invention adopts cement as binder material, and can exempt usually needs incinerating technology from humidity adjusting material, can effectively reduce production costs, and improves the mechanical property of material.
5. the present invention has added suitable sterilant in material, makes material not only have the function of automatic humidifying, also has functions such as the harmful substances of being adsorbed with, antibiotic, sterilization, can effectively improve the indoor air quality of room and working space.
6. the present invention compares with present technology, and raw material sources are more extensive, and production technique is reasonable, and superior performance has good market outlook and application value.
Embodiment
Cement based self moisture control architechture material is prepared from by diatomite, sepiolite, alkyl surfactants, cement, water reducer, quartz sand, alcohols promoting agent, inorganic antiseptic and water etc., in the specific implementation process, according to the environment of applications condition, by adjusting weight percent of the present invention and preparation method, can obtain needed performance.
Embodiment 1
Take by weighing each component by following weight: diatomite 250g, alkyl surfactants 0.6g, cement 300g, quartz sand 100g, water reducer 15g, alcohols promoting agent 23g, inorganic antiseptic 1.4g, water 310g.The mineral powder that diatomite should be selected drying, purity height for use and handle through disintegrating process, fineness is controlled at the 100-300 order.The alcohols promoting agent is dissolved in the water, is poured into then in the above-mentioned diatomite mineral powder, fully stir, deposited 5 minutes, carry out mesoporous surface activation process.Then, the diatomite after load weighted above-mentioned each component activated is in the lump put into stirrer and was stirred 3 minutes, makes to form the micropores that are communicated with in the slurry more, is prepared into flowable plasticity slurry.Slip is poured in the die trial of definite shape, is vibrated, after closely knit, the moulding of wiping one's face, send into relative humidity greater than 50%, temperature is not less than in 15 ℃ the environment and carries out natural curing, form removal after 1 day is prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 85% in 24 hours, also is water regain 85g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 75% that discharge water.
Embodiment 2
Take by weighing each component by following weight: diatomite 250g, sepiolite 70g, alkyl surfactants 1g, cement 200g, quartz sand 140g, water reducer 20g, alcohols promoting agent 30g, inorganic antiseptic 1g, water 288g.Adopt the acid-wash activation pretreatment technology, promptly use the diluted mineral acid aqueous solution to diatomite, scpiolitc pickling after 20 minutes, 100 ℃ of activation 10 hours down, to the slurry of preparing carry out drying, fineness of powder is controlled at the 100-300 order.The alcohols promoting agent is dissolved in the water, is poured into then in diatomite, the scpiolitc powder and fully stirs, deposited 8 minutes, carry out mesoporous surface activation process.Then, diatomite after load weighted each component activated in the lump and sepiolite are put into stirrer and were stirred 5 minutes, make to form the micropores that are communicated with in the slurry more, are prepared from flowable plasticity slurry.Slip is poured in the die trial of definite shape, vibrated, after closely knit, the moulding of wiping one's face, adopt steam-cured mode to quicken maintenance, form removal can be prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 94% in 24 hours, also is water regain 94g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 79% that discharge water.
Embodiment 3
Take by weighing each component by following weight: diatomite 500g, alkyl surfactants 2g, cement 200g, water reducer 30g, alcohols promoting agent 17g, inorganic antiseptic 1g, water 250g.Adopt the acid-wash activation pretreatment technology, promptly with the diluted mineral acid aqueous solution to the pickling of diatomite mineral after 20 minutes 80 ℃ of activation 15 hours down,, to the slurry of preparing carry out drying, fineness of powder is controlled at the 100-150 order.The alcohols promoting agent is dissolved in the water, is poured into then in the diatomite mineral powder and fully stirs, deposited 8 minutes.Then, the diatomite after load weighted each component activated is in the lump put into stirrer and was stirred 5 minutes, makes to form the micropores that are communicated with in the slurry more, is prepared from flowable plasticity slurry.Slip is poured in the die trial of definite shape, vibrated, after closely knit, the moulding of wiping one's face, adopt natural curing or steam-cured mode to quicken maintenance, form removal can be prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 97% in 24 hours, also is water regain 97g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 74% that discharge water.
Embodiment 4
Take by weighing each component by following weight: diatomite 100g, sepiolite 300g, alkyl surfactants 0.1g, cement 200g, quartz sand 100g, water reducer 20g, alcohols promoting agent 50g, water 230g.The mineral powder that diatomite should be selected drying, purity height for use and handle through disintegrating process, fineness is controlled at the 100-300 order.The alcohols promoting agent is dissolved in the water, is poured into then in above-mentioned diatomite, the scpiolitc powder, fully stir, deposited 5 minutes, carry out mesoporous surface activation process.Then, the diatomite after load weighted above-mentioned each component activated is in the lump put into stirrer and was stirred 3 minutes, makes to form the micropores that are communicated with in the slurry more, is prepared into flowable plasticity slurry.Slip is poured in the die trial of definite shape, is vibrated, after closely knit, the moulding of wiping one's face, send into relative humidity greater than 50%, temperature is not less than in 15 ℃ the environment and carries out natural curing, form removal after 1 day is prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 87% in 24 hours, also is water regain 87g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 78% that discharge water.
Embodiment 5
Take by weighing each component by following weight: diatomite 100g, sepiolite 20g, alkyl surfactants 2g, cement 378g, quartz sand 200g, water reducer 10g, alcohols promoting agent 10g, inorganic antiseptic 10g, water 270g.Adopt the acid-wash activation pretreatment technology, promptly use the diluted mineral acid aqueous solution to the pickling of diatomite mineral after 20 minutes, 100 ℃ of activation 10 hours down, to the slurry of preparing carry out drying, fineness of powder is controlled at the 100-300 order.The alcohols promoting agent is dissolved in the water, is poured into then in diatomite, the scpiolitc powder and fully stirs, deposited 8 minutes, carry out mesoporous surface activation process, carry out mesoporous surface activation process.Then, the diatomite after load weighted each component activated is in the lump put into stirrer and was stirred 5 minutes, makes to form the micropores that are communicated with in the slurry more, is prepared from flowable plasticity slurry.Slip is poured in the die trial of definite shape, vibrated, after closely knit, the moulding of wiping one's face, adopt steam-cured mode to quicken maintenance, form removal can be prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 80% in 24 hours, also is water regain 80g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 65% that discharge water.
Embodiment 6
Take by weighing each component by following weight: diatomite 200g, sepiolite 200g, alkyl surfactants 1g, cement 150g, quartz sand 100g, alcohols promoting agent 40g, inorganic antiseptic 9g, water 300g.The mineral powder that diatomite should be selected drying, purity height for use and handle through disintegrating process, fineness is controlled at the 100-300 order.The alcohols promoting agent is dissolved in the water, is poured into then in the above-mentioned diatomite mineral powder, fully stir, deposited 5 minutes, carry out mesoporous surface activation process.Then, the diatomite after load weighted above-mentioned each component activated is in the lump put into stirrer and was stirred 3 minutes, makes to form the micropores that are communicated with in the slurry more, is prepared into flowable plasticity slurry.Slip is poured in the die trial of definite shape, is vibrated, after closely knit, the moulding of wiping one's face, send into relative humidity greater than 50%, temperature is not less than in 15 ℃ the environment and carries out natural curing, form removal after 1 day is prepared into required cement based self moisture control architechture material.The moisture uptake of this self moisture control architechture material: ambient moisture is 95% o'clock, and water-intake rate 90% in 24 hours, also is water regain 90g/100g.; The moisture releasing amount: ambient moisture is 20% o'clock, 24 hours rates 79% that discharge water.
Claims (9)
1, a kind of concrete base building material with automatic humidifying function, its weight percentages is as follows: diatomite 10～50%, sepiolite 0～30%, alkyl surfactants 0.01～0.2%, cement 15～40%, quartz sand 0～20%, water reducer 0～2%, alcohols promoting agent 1～5%, inorganic antiseptic 0～1%, water 20～45%, wherein the alcohols promoting agent is meant ethylene glycol, neopentyl glycol or alkanol.
2, the concrete base building material with automatic humidifying function as claimed in claim 1, its weight percentages is as follows: diatomite 10～25%, sepiolite 2～20%, alkyl surfactants 0.05～0.1%, cement 20～40%, quartz sand 10～20%, water reducer 0.5～1.5%, alcohols promoting agent 1～3%, inorganic antiseptic 0～1%, water 20-45%, wherein the alcohols promoting agent is meant ethylene glycol, neopentyl glycol or alkanol.
3, the concrete base building material with automatic humidifying function as claimed in claim 1 or 2 is characterized in that described alkyl surfactants is sodium lauryl sulphate or sodium laurylsulfonate.
4, the concrete base building material with automatic humidifying function as claimed in claim 1 or 2 is characterized in that described water reducer is naphthalene sulfonic acidformaldehyde condensation product water reducer, calcium lignin sulfonate water depressor, sodium lignin sulfonate water reducer, melamine water reducing agent, sulfamate water reducer or polycarboxylate water-reducer.
5, the concrete base building material with automatic humidifying function as claimed in claim 4 is characterized in that described water reducer is powder naphthalene sulfonic acidformaldehyde condensation product water reducer or liquid polycarboxylate water-reducer.
6, the concrete base building material with automatic humidifying function as claimed in claim 1 or 2 is characterized in that described alcohols promoting agent is a neopentyl glycol.
7, the preparation method of claim 1～6 arbitrary described cement based self moisture control architechture material, this method comprises the following steps:
Weighing each component at first by weight percentage, again pretreated diatomite and sepiolite are carried out surface activation process, then above-mentioned load weighted each component and pretreated diatomite and sepiolite are stirred together, prepare flowable plasticity slurry, at last slip is poured in the die trial of definite shape, vibrate, maintenance after closely knit, the moulding of wiping one's face, form removal can be prepared into required cement based self moisture control architechture material.
8, the preparation method of the described cement based self moisture control architechture material of claim 7, the pre-treatment that it is characterized in that described diatomite, sepiolite is meant selects for use drying, diatomite, sepiolite that purity is high to be processed into the mineral powder through disintegrating process, and fineness is controlled at the 100-300 order; Or adopt the acid-wash activation pretreatment technology, promptly use the diluted mineral acid aqueous solution to its pickling after, 80～300 ℃ of activation 6～24 hours down, again the slurry of preparing is carried out drying, grinding to above-mentioned fineness.
9, the preparation method of the described cement based self moisture control architechture material of claim 7 is characterized in that the surface activation process of described diatomite, sepiolite is meant mesoporous surface activating process or microporous foam Technology.
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Families Citing this family (9)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102060500B (en) * | 2010-11-30 | 2012-10-03 | 沈阳临德陶瓷研发有限公司 | Preparation method of absorption type building decoration material |
| CN102584319A (en) * | 2012-03-22 | 2012-07-18 | 北京四方如钢混凝土制品有限公司 | Multifunctional foam concrete |
| CN103241998A (en) * | 2013-04-26 | 2013-08-14 | 河南师范大学 | Thermal-insulating noise-reducing cement and preparation method thereof |
| CN103601442B (en) * | 2013-10-31 | 2015-07-15 | 德高（广州）建材有限公司 | Waterproof slurry with sterilization function for toilet bath room decoration surfaces |
| CN103896526B (en) * | 2014-03-17 | 2015-09-30 | 上海理工大学 | A kind of body of wall humidity adjusting material based on wool and jute and preparation method thereof |
| CN106517992B (en) * | 2016-09-26 | 2018-12-07 | 南昌大学 | A kind of preparation method of bog moss base composite humidity adjusting material |
| CN107876026A (en) * | 2017-11-21 | 2018-04-06 | 常州创索新材料科技有限公司 | A kind of complex building humidity adjusting material and preparation method thereof |
| CN109053108A (en) * | 2018-09-14 | 2018-12-21 | 同济大学 | A kind of diatomite plate and preparation method thereof |
| CN110922123B (en) * | 2019-11-16 | 2022-01-28 | 北京建工新型建材有限责任公司 | Humidity-regulating concrete and preparation method thereof |
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| CN1367035A (en) * | 2001-01-22 | 2002-09-04 | 王福生 | Sepiolite type natural mineral series active drying agent and its production process |
| US6641658B1 (en) * | 2002-07-03 | 2003-11-04 | United States Gypsum Company | Rapid setting cementitious composition |
| CN1557760A (en) * | 2004-02-09 | 2004-12-29 | 许盛英 | Acoustic-insulation heat-preservation material using attapulgite particle |
| CN1559952A (en) * | 2004-03-06 | 2005-01-05 | 炜 罗 | Process of preparing infusorial earth modified cement and light high strength concrete |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1367035A (en) * | 2001-01-22 | 2002-09-04 | 王福生 | Sepiolite type natural mineral series active drying agent and its production process |
| US6641658B1 (en) * | 2002-07-03 | 2003-11-04 | United States Gypsum Company | Rapid setting cementitious composition |
| CN1557760A (en) * | 2004-02-09 | 2004-12-29 | 许盛英 | Acoustic-insulation heat-preservation material using attapulgite particle |
| CN1559952A (en) * | 2004-03-06 | 2005-01-05 | 炜 罗 | Process of preparing infusorial earth modified cement and light high strength concrete |
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