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A method for preparing composite humidity-controlling material by modifying inorganic powder with silica-alumina gel

A humidity-regulating material and inorganic powder technology, applied in chemical instruments and methods, other chemical processes, etc., can solve problems such as slow moisture absorption and dehumidification, poor dehumidification performance, difficult to analyze moisture, etc., and achieve an increase in equilibrium moisture content , Improving the speed of moisture absorption and desorption, and the effect of high moisture absorption capacity

Active Publication Date: 2019-11-29
江苏源清环保科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention: Aiming at the problem that the traditional moisture-controlling materials absorb and dehumidify slowly, especially the dehumidification performance is poor, and the absorbed moisture is difficult to analyze, a silica-alumina gel modified inorganic powder is provided Method for preparing composite humidity-regulating material

Method used

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  • A method for preparing composite humidity-controlling material by modifying inorganic powder with silica-alumina gel

Examples

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example 1

[0020] In parts by weight, 100 parts of perlite, 80 parts of calcium silicate, 30 parts of zeolite, 120 parts of 30-mesh corn stalk particles, 150 parts of sodium chloride, 80 parts of calcium chloride, 50 parts of potassium carbonate and 40 parts of Magnesium chloride, stir and mix evenly to obtain a mixture, mix the mixture with deionized water according to the mass ratio of 1:10, and heat to 60°C, stir and mix for 50min and then filter to obtain a filter residue, put the filter residue in an oven, at 100°C Dry for 10 hours to obtain the dried filter residue, put the dried filter residue into a ball mill and pass through a 240-mesh sieve to obtain a modified mixed powder; put the modified mixed powder into a carbonization furnace, and heat it under a nitrogen atmosphere at 10°C / Min heating rate was raised to 700°C, heat-preserved and carbonized for 100 minutes, cooled to room temperature and discharged, and the carbonized powder was collected; according to the mass ratio of ...

example 2

[0022] In parts by weight, 50 parts of perlite, 60 parts of calcium silicate, 20 parts of zeolite, 100 parts of 20 mesh corn stalk particles, 120 parts of sodium chloride, 60 parts of calcium chloride, 30 parts of potassium carbonate and 20 parts of Magnesium chloride, stirred and mixed evenly to obtain a mixture, according to the mass ratio of 1:10, mixed the mixture with deionized water, and heated to 50 ° C, stirred and mixed for 30 minutes and filtered to obtain a filter residue, put the filter residue in an oven, at 100 ° C Dry for 8 hours to obtain the dried filter residue, put the dried filter residue into a ball mill and pass through a 200-mesh sieve to obtain a modified mixed powder; put the modified mixed powder into a carbonization furnace, and heat it at 5 ° C / The heating rate was raised to 650°C at a heating rate of 60 minutes. After 60 minutes of heat preservation and carbonization, it was cooled to room temperature and discharged, and the carbonized powder was ...

example 3

[0024]In parts by weight, 70 parts of perlite, 70 parts of calcium silicate, 25 parts of zeolite, 110 parts of 25 mesh corn stalk particles, 130 parts of sodium chloride, 70 parts of calcium chloride, 40 parts of potassium carbonate and 30 parts of Magnesium chloride, stirred and mixed evenly to obtain a mixture, according to the mass ratio of 1:10, mixed the mixture with deionized water, and heated to 55 ° C, stirred and mixed for 40 minutes and then filtered to obtain a filter residue, put the filter residue in an oven, at 110 ° C Dry for 9 hours to obtain the dried filter residue, put the dried filter residue into a ball mill and pass through a 220-mesh sieve to obtain a modified mixed powder; put the modified mixed powder into a carbonization furnace, and heat it at 7 ° C / Min heating rate was raised to 670°C, heat preservation and carbonization for 70 minutes, cooling to room temperature and discharging, and collecting carbonized powder; according to the mass ratio of 1:1...

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Abstract

The invention relates to a method of preparing a composite humidity conditioning material from alumino silica gel modified inorganic powder and belongs to the technical field of inorganic material preparation. The method comprises the steps of stirring, mixing and filtering substances such as perlite, calcium silicate and water as raw materials, drying, ball-milling and carbonizing filter residues, collecting carbonized powder, dissolving aluminum nitrate in water, regulating pH (potential of hydrogen) of a nitric acid solution, mixing and heating the nitric acid solution with substances such as polyethylene glycol to form an alumino silica gel solution, mixing the alumino silica gel solution with the carbonized powder, adding substances such as a silane coupling agent for mixing and drying, and performing grinding and calcining to form the humidity conditioning material. The composite humidity conditioning material prepared by the method absorbs and releases humidity relatively quickly, has high humidity absorption capacity, and can effectively adjust indoor humidity of a habitable room, an office and the like.

Description

technical field [0001] The invention relates to a method for preparing a composite humidity-adjusting material by modifying inorganic powder with silica-alumina gel, and belongs to the technical field of inorganic material preparation. Background technique [0002] Humidity-regulating materials can regulate humidity in a wide range, can be used as wallpaper, and can also be used as the bottom material of plank bricks to regulate humidity well. Humidity-regulating materials have good moisture absorption and release functions. Common composite humidity control materials are composed of superabsorbent resin materials and inorganic materials. Most of the superabsorbent resin materials are polar high-grade materials, such as polyacrylamide, which have large specific surface area and strong adsorption capacity. It has a certain viscosity, good film-forming property, ultra-high moisture absorption capacity, good film-forming property, poor moisture release performance, and difficu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01J20/20B01J20/30
CPCB01J20/12B01J20/16B01J20/20
Inventor 邹家宾薛洋葛明月
Owner 江苏源清环保科技有限公司
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