CN104830276A - Inorganic humidity-controlling material - Google Patents
Inorganic humidity-controlling material Download PDFInfo
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- CN104830276A CN104830276A CN201510171361.7A CN201510171361A CN104830276A CN 104830276 A CN104830276 A CN 104830276A CN 201510171361 A CN201510171361 A CN 201510171361A CN 104830276 A CN104830276 A CN 104830276A
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- humidity
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- adjusting material
- humidity adjusting
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Abstract
A method for preparing inorganic humidity-controlling material comprises the steps as follows: a) adjusting a sodium silicate solution with modulus of 0.5-2.0 and a soluble iron salt solution to an appropriate concentration; b) mixing the two by a certain percentage and adjusting the pH value to 5-7 to obtain a suspension containing coprecipitate; c) the, conducting hydrothermal treatment, filtering and washing on the suspension in a hydrothermal environment with normal pressure and the temperature of 50-98 DEG C, and drying the filter cake at 50-100 DEG C to obtain the humidity-controlling material. Compared with the humidity-controlling material of the prior art, the invention has the following advantages: 1) simple and energy-saving preparation method; 2) fast response and high moisture content; 3) good moisture absorption and desorption performance, rapid moisture desorption in environment with low humidity and below 60 DEG C, and good repeated moisture absorption and desorption capability; and 4) cheap and easily available raw materials, low cost, non-polluting manufacturing processes, and preparation of humidity- controlling materials with different targets by changing the type of iron salts and modulus of sodium silicate.
Description
Technical field
The invention belongs to functional materials preparing technical field, be specifically related to a kind of method that Starso and soluble ferric iron salt prepare humidity adjusting material.
Background technology
Atmospheric moisture evaluates the important factor of environmental quality.The too high or too low human body that all can cause of humidity is uncomfortable, causes damage, cause national economy to lose to equipment.Suitable humidity range contributes to physical and mental health, increases work efficiency, and ensures quality product.The Sustainable development etc. of humid control to save energy, environmental protect comfortableness, promotion ecotope has important practical significance.
Humidity adjusting material has automatic adjusting air humidity function, as green conditioning technique, relates to multiple field such as storage of cultural relic conservation, weaving, chemical industry, material of construction, weaponry.Up to now, many scholars research and develop humidity adjusting material, as Chinese patent " a kind of preparation method of humidity adjusting material " (January 4 2012 publication date, publication number CN102304348) and Chinese patent " a kind of preparation method of composite humidity adjusting material " (March 1 2013 publication date, publication number CN102964758) in disclosed technology, but all in various degree there is the problems such as the high or manufacturing process of production cost is complicated, cause the preparations and applicatio of humidity adjusting material to be subject to a definite limitation.
Summary of the invention
The object of the invention is to overcome the deficiency that prior art exists, high-specific surface area, micro hole construction, moisture absorption and desorption property are superior, with low cost, the simple humidity adjusting material preparation method of manufacturing process to provide one to have.
Technical solution of the present invention is as follows:
Step one: by massfraction, delivery number is the Starso 1 part of 0.5 ~ 2.0, and join in 2 ~ 14 parts of distilled water, stirring and dissolving, obtains Starso water solution A;
Step 2: by massfraction, gets soluble ferric iron salt 1 part, and join in 2 ~ 10 parts of distilled water, stirring and dissolving, obtains molysite aqueous solution B;
Step 3: by massfraction, gets the solution A that 0.5 ~ 2.0 part of step one is prepared, and joins in solution B prepared by 1 part of step 2, be uniformly mixed, add the hydrochloric acid soln of 3 ~ 8wt% or the aqueous sodium hydroxide solution of 5 ~ 15wt% again, regulate pH to be 5 ~ 7, obtain the suspension containing coprecipitate;
Step 4: under normal pressure, the hot water environment of 50 ~ 98 DEG C, suspension hydrothermal treatment consists step 3 prepared 10 ~ 17 hours, then filters, washs, filter cake under 50 ~ 100 DEG C of conditions, freeze-day with constant temperature 12 ~ 48 hours, obtained humidity adjusting material.
Described modulus is the mol ratio of silicon-dioxide and sodium oxide.
Described soluble ferric iron salt is the one in iron trichloride, ferric sulfate and iron nitrate.
Compared with existing humidity adjusting material, the product that the present invention obtains has following outstanding advantages: 1) moisture absorption and desorption property is good; 2) raw materials is cheaply easy to get, cost is low; 3) manufacturing process is simply energy-conservation, pollution-free.
Embodiment
Below in conjunction with embodiment, the invention will be further described:
Step one: by massfraction, delivery number is the non-hydrate sodium metasilicate 1 part of 1, and join in 6.5 parts of distilled water, stirring and dissolving, obtains Starso water solution A;
Step 2: by massfraction, gets ferric chloride (FeCl36H2O) 1 part, and join in 7 parts of distilled water, stirring and dissolving, obtains ferric chloride aqueous solutions B;
Step 3: by massfraction, gets the solution A that 1 part of step one is prepared, and joins in solution B prepared by 1 part of step 2, be uniformly mixed, add the hydrochloric acid soln be made into by the concentrated hydrochloric acid of 1 part of 36 ~ 38wt% and 9 parts of distilled water again, regulate pH to be 5.5, obtain the suspension containing coprecipitate;
Step 4: under normal pressure, the hot water environment of 98 DEG C, suspension hydrothermal treatment consists prepared by step 3 15 hours.Then filtration, filter cake wash three times with deionized water again, finally under 60 DEG C of conditions, and freeze-day with constant temperature 48 hours, obtained humidity adjusting material.
Humidity adjusting material prepared by the embodiment of the present invention, specific surface area is 270
, pore volume is 0.35
, mean pore size is 5.48
.
Above to invention has been detailed introduction and by concrete case study on implementation to invention has been elaboration.Preparation process condition of the present invention is not limited thereto, and those of ordinary skill in the art easily can change preparation process condition and thought of the present invention are applied in other case study on implementation and go.Therefore the present invention is not limited only to case study on implementation here, and the amendment made for the present invention and improvement all should within protection scope of the present invention.
Claims (3)
1. a preparation method for inorganic humidity adjusting material, is characterized by step as follows:
Step one: by massfraction, delivery number is the Starso 1 part of 0.5 ~ 2.0, and join in 2 ~ 14 parts of distilled water, stirring and dissolving, obtains Starso water solution A;
Step 2: by massfraction, gets soluble ferric iron salt 1 part, and join in 2 ~ 10 parts of distilled water, stirring and dissolving, obtains molysite aqueous solution B;
Step 3: by massfraction, gets the solution A that 0.5 ~ 2.0 part of step one is prepared, and joins in solution B prepared by 1 part of step 2, be uniformly mixed, add the hydrochloric acid soln of 3 ~ 8wt% or the aqueous sodium hydroxide solution of 5 ~ 15wt% again, regulate pH to be 5 ~ 7, obtain the suspension containing coprecipitate;
Step 4: under normal pressure, the hot water environment of 50 ~ 98 DEG C, suspension hydrothermal treatment consists step 3 prepared 10 ~ 17 hours, then filters, washs, filter cake under 50 ~ 100 DEG C of conditions, freeze-day with constant temperature 12 ~ 48 hours, obtained humidity adjusting material.
2. the preparation method of humidity adjusting material according to claim 1, is characterized in that: described modulus is the mol ratio of silicon-dioxide and sodium oxide.
3. the preparation method of humidity adjusting material according to claim 1, is characterized in that: described soluble ferric iron salt is the one in iron trichloride, ferric sulfate and iron nitrate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510171361.7A CN104830276A (en) | 2015-04-13 | 2015-04-13 | Inorganic humidity-controlling material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510171361.7A CN104830276A (en) | 2015-04-13 | 2015-04-13 | Inorganic humidity-controlling material |
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|---|---|
| CN104830276A true CN104830276A (en) | 2015-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510171361.7A Pending CN104830276A (en) | 2015-04-13 | 2015-04-13 | Inorganic humidity-controlling material |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352934A (en) * | 2017-06-28 | 2017-11-17 | 常州蓝旗亚纺织品有限公司 | A kind of conditioning composite |
| CN109232012A (en) * | 2018-09-11 | 2019-01-18 | 淮阴工学院 | Recessed soil or bentonite base plant fiber composite humidity adjusting material and its preparation method and application |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102304348A (en) * | 2011-08-26 | 2012-01-04 | 浙江理工大学 | Method for preparing moisture-content-adjustable material |
| CN102407093A (en) * | 2011-07-26 | 2012-04-11 | 华东理工大学 | Composite silica gel humidity adjusting agent |
| CN102504461A (en) * | 2011-08-24 | 2012-06-20 | 杭州泛林科技有限公司 | Manufacture method of intelligent humidifying material |
-
2015
- 2015-04-13 CN CN201510171361.7A patent/CN104830276A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102407093A (en) * | 2011-07-26 | 2012-04-11 | 华东理工大学 | Composite silica gel humidity adjusting agent |
| CN102504461A (en) * | 2011-08-24 | 2012-06-20 | 杭州泛林科技有限公司 | Manufacture method of intelligent humidifying material |
| CN102304348A (en) * | 2011-08-26 | 2012-01-04 | 浙江理工大学 | Method for preparing moisture-content-adjustable material |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107352934A (en) * | 2017-06-28 | 2017-11-17 | 常州蓝旗亚纺织品有限公司 | A kind of conditioning composite |
| CN109232012A (en) * | 2018-09-11 | 2019-01-18 | 淮阴工学院 | Recessed soil or bentonite base plant fiber composite humidity adjusting material and its preparation method and application |
| CN109232012B (en) * | 2018-09-11 | 2021-04-23 | 淮阴工学院 | Attapulgite or bentonite-based plant fiber composite humidity control material |
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Application publication date: 20150812 |
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| RJ01 | Rejection of invention patent application after publication |