CN101711972B - Material with humidifying function and preparation method thereof - Google Patents
Material with humidifying function and preparation method thereof Download PDFInfo
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- CN101711972B CN101711972B CN2009101868222A CN200910186822A CN101711972B CN 101711972 B CN101711972 B CN 101711972B CN 2009101868222 A CN2009101868222 A CN 2009101868222A CN 200910186822 A CN200910186822 A CN 200910186822A CN 101711972 B CN101711972 B CN 101711972B
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Abstract
The invention relates to a material with humidifying function and a preparation method thereof. An adopted organic-inorganic composite material comprises the following components in percentage by weight: 15 to 18 percent of mica, 70 to 75 percent of silica sol, 3 to 4 percent of kaolin, 1 to 2 percent of montmorillonite, 5 to 8 percent of cross linker and 0.1 to 0.2 percent of dispersant. The preparation method comprises the following steps: ball-milling the components for 12 to 24 hours and mixing the components uniformly, adding the cross linker into the mixture, stirring the mixture for 30minutes, then molding the mixture according to the required product, and naturally drying the mixture to form the material with the humidifying function. The obtained material has the advantages of obvious moisture absorption effect, stable performance, low raw material cost, simple preparation process, non-toxicity and environmental protection, can reduce or cancel the running time and frequencyof an indoor air moisture adjusting device and save the energy, and has good market prospect and popularization and application values.
Description
Technical field
The present invention relates to a kind of preparation of inorganic-organic composite material, specifically is a kind of humidity-controlling functional material and preparation method thereof that has.
Background technology
As everyone knows, the relative humidity of human survival optimum environment is between 40～70%, and number of bacteria is minimum in this air humidity scope, and air has certain ozone incidence, and air is purified.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 whole system building structure be improved, and the day and night running of equipment investment, machinery and the aspect both expensive such as consumption of energy thereof had both caused atmosphere pollution also not meet the strategy of sustainable development, and it also seems powerless on control short space humidity.Therefore, research and development can be very meaningful to the humidity-controlling functional material of performances such as indoor water vapour generation absorption, desorb automatically under the different humidity condition.
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 medias such as timber, gypsum, zeolite powder as the damping base material, as patents such as notification number CN1834049A Chinese patent cement based self moisture control architechture materials and preparation method thereof.At present, the many of development and application both at home and abroad is the second class humidity adjusting material, but production technology is too complicated, and the material therefor cost is too high, and is also not ideal in aspect performances such as damping capacity, damping responsivenesses.
Summary of the invention
The technical problem to be solved in the present invention provides that a kind of low production cost, technology are simple, the humidity-controlling functional material of asepsis environment-protecting and preparation method thereof.
Technical scheme of the present invention is: a kind of have a humidity-controlling functional material, and its weight percentages is: mica 15～18%, Ludox 70～75%, kaolin 3～4%, montmorillonite 1～2%, crosslinking agent 5～8%, dispersant 0.1～0.2%;
SiO in the described Ludox
2Content 25～30%;
Described crosslinking agent is an acrylate, and its content is 20～30%;
Described dispersant is waterglass or Sodium Polyacrylate.
Preparing above-mentioned a kind of method with humidity-controlling functional material is: at first with mica, Ludox, kaolin, montmorillonite, dispersant, by above-mentioned composition batching, after ball milling was mixed in 12～24 hours, add crosslinking agent, stirred 30 minutes, press the moulding of required product shape then, can form after the air dry and have humidity-controlling functional material;
Described mica raw material is crossed 800 mesh sieves, and kaolin, montmorillonite raw material are crossed 325 mesh sieves.
Unformed SiO in the Ludox
2Its size of particle is in 10～30 nanometers, after the Ludox dehydration, forms the space of several nanometers between the particle, and have huge specific area, thereby can adsorb a large amount of physical chemistry water, and adsorb reversiblely, be a kind of effective moisture regulator; But, it is restricted because it presents hysteresis in the adsorption and desorption circulation of water.
Mica itself has certain absorption property, because its special structure, in processing and preparation process, can form the slit of several nanometers in its layer structure, after piling up, the mica of laminated structure can form the space of 100～1000 nanometers, when with after Ludox mixes mutually, this pore structure will be regulated in the adsorption and desorption circulation of Ludox to water and be presented hysteresis, make it to form have that the moisture absorption capacity is big, response speed is fast from the damping functional material.
Kaolin, montmorillonitic clay are the silicate mineral of layer structure, have the characteristic of absorption and desorb water steam, though their moisture absorption capacity is little, the processability of exchanging the humidity-controlling functional material of abridged edition invention plays an important role.Acrylate itself also has certain damping effect, and the introducing of acrylate simultaneously can improve the intensity of humidity-controlling functional material.
Its pore size of humidity-controlling functional material (as shown in Figure 1) between 5～200 nanometers of preparation, the damping scope is between 35～55%.The cost of material that the humidity-controlling functional material of preparation adopts is low, the source is wide, preparation technology is simple, and employed advantages of nontoxic raw materials, and the preparation of material need not calcining, meets the requirement of " cleaner production ".
Description of drawings
Accompanying drawing 1 records the photo of goods internal structure for adopting ESEM.
The specific embodiment
Embodiment 1-5:
By following composition mica, Ludox, kaolin, montmorillonite, waterglass or Sodium Polyacrylate are prepared burden, after ball milling makes it to mix, add acrylate, stirred 30 minutes, press the moulding of required product shape then, can form after the air dry and have humidity-controlling functional material.
| Raw material and technological parameter | Example 1 | Example 2 | Example 3 | Example 4 |
| Mica (＜800 order) | 15 | 16 | 18 | 15 |
| Ludox (SiO 2Content 28%) | 75 | 74 | 72 | 72 |
| Kaolin (＜325 order) | 3 | 3.3 | 3 | 4 |
| Montmorillonite (＜325 order) | 1.9 | 1 | 1.5 | 1 |
| Waterglass | 0.1 | 0.2 | 0 | 0 |
| Sodium Polyacrylate | 0 | 0 | 0.2 | 0.1 |
| Acrylate (content 25%) | 5 | 5.5 | 5.3 | 7.9 |
| The ball milling time (hour) | 15 | 19 | 21 | 24 |
Adopt vacuum method to record table products obtained therefrom water absorption rate, apparent porosity, bulk density; Adopt and to reach in the Wuzhong City of Ningxia that table products obtained therefrom compression strength, rupture strength result value scope see the following form on the LJ-5 type machinery pull test machine testing that machinery plant produces:
| Performance indications | Water absorption rate % | Apparent porosity % | Bulk density g/cm3 | Compression strength MPa | Rupture strength MPa |
| 0.99～3.12 | 2.69～3.85 | 2.45～2.71 | 5.20～7.31 | 3.10～4.21 |
Claims (5)
1. one kind has humidity-controlling functional material, and its weight percentages is: mica 15～18%, Ludox 70～75%, kaolin 3～4%, montmorillonite 1～2%, crosslinking agent 5～8%, dispersant 0.1～0.2%.
2. according to the described a kind of humidity-controlling functional material that has of claim 1, it is characterized in that: SiO in the described Ludox
2Content 25～30%.
3. according to the described a kind of humidity-controlling functional material that has of claim 1, it is characterized in that: described dispersant is waterglass or Sodium Polyacrylate.
4. each described a kind of preparation method of claim 1-3 with humidity-controlling functional material, it is characterized in that: at first with mica, Ludox, kaolin, montmorillonite, dispersant, by above-mentioned composition batching, after ball milling was mixed in 12～24 hours, add crosslinking agent, stirred 30 minutes, and pressed the moulding of required product shape then, can form after the air dry and have humidity-controlling functional material.
5. a kind of preparation method with humidity-controlling functional material according to claim 4 is characterized in that: described mica raw material is crossed 800 mesh sieves, and kaolin, montmorillonite raw material are crossed 325 mesh sieves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101868222A CN101711972B (en) | 2009-12-28 | 2009-12-28 | Material with humidifying function and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101868222A CN101711972B (en) | 2009-12-28 | 2009-12-28 | Material with humidifying function and preparation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101711972A CN101711972A (en) | 2010-05-26 |
| CN101711972B true CN101711972B (en) | 2011-06-01 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101868222A Expired - Fee Related CN101711972B (en) | 2009-12-28 | 2009-12-28 | Material with humidifying function and preparation method thereof |
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| Country | Link |
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| CN (1) | CN101711972B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103194000B (en) * | 2013-04-08 | 2014-08-27 | 中国科学院长春应用化学研究所 | Method for preparing composite type moisture absorption film |
| CN105669089B (en) * | 2015-12-31 | 2018-03-02 | 广东工业大学 | A kind of construction material of adjusting humidity and preparation method thereof |
| KR101848385B1 (en) * | 2016-10-19 | 2018-05-28 | 지상선 | Stick type of Moisture absorbent and vacuum dual layer glass having the same |
| CN108047481B (en) * | 2017-12-08 | 2020-02-14 | 中国矿业大学 | Inorganic modified polymer composite ball moisture absorption material 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 |
-
2009
- 2009-12-28 CN CN2009101868222A patent/CN101711972B/en not_active Expired - Fee Related
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| Publication number | Publication date |
|---|---|
| CN101711972A (en) | 2010-05-26 |
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Granted publication date: 20110601 Termination date: 20121228 |