CN108559453A - A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding - Google Patents
A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding Download PDFInfo
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- CN108559453A CN108559453A CN201810436195.2A CN201810436195A CN108559453A CN 108559453 A CN108559453 A CN 108559453A CN 201810436195 A CN201810436195 A CN 201810436195A CN 108559453 A CN108559453 A CN 108559453A
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- expanded perlite
- change material
- composite phase
- calcium silicates
- herbaceous plants
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- C—CHEMISTRY; METALLURGY
- C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
- C09K—MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- C09K5/00—Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants; Materials for the production of heat or cold by chemical reactions other than by combustion
- C09K5/02—Materials undergoing a change of physical state when used
- C09K5/06—Materials undergoing a change of physical state when used the change of state being from liquid to solid or vice versa
- C09K5/063—Materials absorbing or liberating heat during crystallisation; Heat storage materials
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- Agricultural Chemicals And Associated Chemicals (AREA)
- Silicates, Zeolites, And Molecular Sieves (AREA)
Abstract
The invention discloses a kind of preparation methods of the positive certain herbaceous plants with big flowers acid plumping perlite composite phase-change material of calcium silicates powder cladding, which is characterized in that is acidified expanded perlite with hydrochloric acid and impregnates, it is washed to neutrality, high-temperature roasting activates after drying, adds surfactant, distilled water stirring, filters, it is so dry that pre-process perlite powder, thereto plus hydrophober is to atherosclerotic, seals, hydrolysis, it filters, it is dry；Positive certain herbaceous plants with big flowers acid, modified expanded perlite are put into three neck round bottom flask, air-tightness is checked, vacuumizes, be put into thermostat water bath, breather valve is opened, is stirred to react to obtain n-capric acid expanded perlite composite phase-change material；Add calcium chloride solution, polyvinyl alcohol into EDETATE SODIUM solution, stir and evenly mix, adds water glass and form white emulsion shape, washing, drying, grinds to obtain calcium silicates superfines at filtering；Gained composite phase-change material is impregnated in polyvinyl alcohol, is added in calcium silicates superfines, by the phase change grains low temperature drying of package.
Description
Technical field
The present invention relates to external-wall heat-insulation material fields, and in particular to a kind of positive certain herbaceous plants with big flowers acid-expansion of calcium silicates powder cladding is precious
The preparation method of pearl rock composite phase-change material.
Background technology
It takes place frequently in recent years as fire incident caused by external-wall heat-insulation material due to the use of organic insulation material, is
Solve the safety issue of building thermal insulation material, it is for organic insulation material fire line poor, easy to aging the deficiencies of,
Urgent need prepares a kind of inorganic fireproofing insulation material of new type of safe.Cenosphere porous material prepared by the present invention has light
The features such as matter is high-strength, thermal coefficient is low, long lifespan, not only contributes to the recycling of solid waste resource, is also building exterior wall heat preserving
Material provides new direction.
Invention content
The invention mainly solves the technical problem of providing a kind of positive certain herbaceous plants with big flowers acid-expanded perlite of calcium silicates powder cladding is multiple
The preparation method for closing phase-change material has good thermal stability and insulation according to composite phase-change material prepared by the technique
Function.
A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding, feature exist
In carrying out according to the following steps：
（1）Activation, pretreatment and the modification of expanded perlite：
20-30 parts of expanded perlites hydrochloric acid is acidified after impregnating 9-10h, is washed with distilled water to neutrality, is carried out after dry high
Warm calcination activation crosses 60-80 mesh sieve, and 2-3 parts of surfactants, then 1 is added:5 are added distilled water stirring, filter, at 60-63 DEG C
Lower dry 10-12h obtains pretreatment perlite powder, adds hydrophober to atherosclerotic, sealing, in 58- while stirring thereto
Hydrolysis 7-8h at 62 DEG C is filtered, in 60-62 DEG C of dry 7-8h；
（2）The preparation of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material：
Gained modified expanded perlite in positive certain herbaceous plants with big flowers acid, (1) is put into three neck round bottom flask, air-tightness is checked, vacuumizes 25-
35s is put into 15-17min in 44-46 DEG C of thermostat water bath, opens breather valve, is stirred to react 2-3min；Air-tightness is reexamined, is taken out
Vacuum 25-35s is put into 15-17min in 44-46 DEG C of thermostat water bath, opens breather valve, is stirred to react 2-3min, cooling, obtains
To n-capric acid-expanded perlite composite phase-change material；
（3）Calcium silicates modified powder cladding process：
The calcium chloride solution of equivalent molar is added into 1mol EDETATE SODIUM solution, polyvinyl alcohol is added, is uniformly mixed,
It adds waterglass and forms white emulsion shape, calcium silicates superfines is made in washing, filtering, dry, grinding；
Gained n-capric acid-expanded perlite composite phase-change material in (2) is first impregnated into 22-24h in polyvinyl alcohol, adds silicon
In sour calcium superfines, excessive powder is screened out, the phase change grains of package are put into low temperature drying in drying box.
Wherein, step（1）Middle concentration of hydrochloric acid is 10%, and surfactant is neopelex, and hydrophober is poly- two
Methylsiloxane, hydrolysis a concentration of 0.8%.
Step（3）Middle polyvinyl alcohol concentration is 2%.
The reaction mechanism of the present invention is as follows：
Acid-wash activation is carried out to expanded perlite, the absorption property of porous carrier can be improved, pickling and high-temperature roasting activation are advantageous
In the removal of impurity in micropore, while the internal surface area, porosity and surface-active of pore structure can be improved, made it have more
Excellent absorption property；The expanded perlite of acid-wash activation is screened, surfactant sodium dodecyl base benzene sulfonic acid sodium salt is added
It is pre-processed；Surface modification is carried out by hydrolysis deposition again, the hydrophobic effect of modified expanded perlite is good, operation letter
Single, the dosage of organic silicon solution is small, saves material, cost-effective, more economy；It is swollen as phase-change material, modification using n-capric acid
Swollen perlite is carrier, prepares n-capric acid/modified expanded perlite composite phase-change energy storage material using vacuum suction method, modification is swollen
Most holes of swollen perlite have incorporated phase-changing energy storage material, still have good stabilization after multiple thermal cycle
Property；After being wrapped up with calcium silicates powder, good thermal stability；It can be applied in the thermal insulation mortar, gypsum, coating of exterior wall, have and protect
Warm heat insulating function.
Specific implementation mode
In order to make the technical means, the creative features, the aims and the efficiencies achieved by the present invention be easy to understand, tie below
Specific embodiment is closed, the present invention is further explained.
Embodiment
A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding, feature exist
In carrying out according to the following steps：
（1）Activation, pretreatment and the modification of expanded perlite：
20kg expanded perlites hydrochloric acid is acidified after impregnating 10h, is washed with distilled water to neutrality, high-temperature roasting is carried out after dry
60 mesh sieve is crossed in activation, and 2kg surfactants, then 1 is added:5 are added distilled water stirring, filter, the dry 10h at 60-63 DEG C,
Pretreatment perlite powder is obtained, adds hydrophober to atherosclerotic while stirring thereto, sealing hydrolyzes anti-at 58-62 DEG C
7h is answered, is filtered, in 60-62 DEG C of dry 7h；
（2）The preparation of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material：
Gained modified expanded perlite in positive certain herbaceous plants with big flowers acid, (1) is put into three neck round bottom flask, air-tightness is checked, vacuumizes 35s,
It is put into 15min in 44-46 DEG C of thermostat water bath, breather valve is opened, is stirred to react 2min；Air-tightness is reexamined, 25s is vacuumized,
It is put into 17min in 44-46 DEG C of thermostat water bath, breather valve is opened, is stirred to react 3min, it is cooling, obtain n-capric acid-expanded pearlite
Rock composite phase-change material；
（3）Calcium silicates modified powder cladding process：
The calcium chloride solution of equivalent molar is added into 1mol EDETATE SODIUM solution, polyvinyl alcohol is added, is uniformly mixed,
It adds waterglass and forms white emulsion shape, calcium silicates superfines is made in washing, filtering, dry, grinding；
Gained n-capric acid-expanded perlite composite phase-change material in (2) is first impregnated into 22h in polyvinyl alcohol, adds silicic acid
In calcium superfines, excessive powder is screened out, the phase change grains of package are put into low temperature drying in drying box.
Wherein, step（1）Middle concentration of hydrochloric acid is 10%, and surfactant is neopelex, and hydrophober is poly- two
Methylsiloxane, hydrolysis a concentration of 0.8%.
Step（3）Middle polyvinyl alcohol concentration is 2%.
Claims (4)
1. a kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding, which is characterized in that
Expanded perlite is acidified with hydrochloric acid and is impregnated, is washed to neutrality, high-temperature roasting activation, adds surfactant, distilled water after drying
Stirring filters, so dry that pre-process perlite powder, and thereto plus hydrophober is to atherosclerotic, seals, hydrolysis, filters,
It is dry；Positive certain herbaceous plants with big flowers acid, modified expanded perlite are put into three neck round bottom flask, air-tightness is checked, vacuumizes, be put into water bath with thermostatic control
In pot, breather valve is opened, is stirred to react to obtain n-capric acid-expanded perlite composite phase-change material；Add into EDETATE SODIUM solution
Calcium chloride solution, polyvinyl alcohol, stir and evenly mix, and add water glass and form white emulsion shape, washing, drying, grinds to obtain silicon at filtering
Sour calcium superfines；Gained composite phase-change material is impregnated in polyvinyl alcohol, is added in calcium silicates superfines, will be wrapped up
Phase change grains low temperature drying.
2. a kind of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding according to claim 1
Preparation method, which is characterized in that carry out according to the following steps：
（1）Activation, pretreatment and the modification of expanded perlite：
20-30 parts of expanded perlites hydrochloric acid is acidified after impregnating 9-10h, is washed with distilled water to neutrality, is carried out after dry high
Warm calcination activation crosses 60-80 mesh sieve, and 2-3 parts of surfactants, then 1 is added:5 are added distilled water stirring, filter, at 60-63 DEG C
Lower dry 10-12h obtains pretreatment perlite powder, adds hydrophober to atherosclerotic, sealing, in 58- while stirring thereto
Hydrolysis 7-8h at 62 DEG C is filtered, in 60-62 DEG C of dry 7-8h；
（2）The preparation of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material：
Gained modified expanded perlite in positive certain herbaceous plants with big flowers acid, (1) is put into three neck round bottom flask, air-tightness is checked, vacuumizes 25-
35s is put into 15-17min in 44-46 DEG C of thermostat water bath, opens breather valve, is stirred to react 2-3min；Air-tightness is reexamined, is taken out
Vacuum 25-35s is put into 15-17min in 44-46 DEG C of thermostat water bath, opens breather valve, is stirred to react 2-3min, cooling, obtains
To n-capric acid-expanded perlite composite phase-change material；
（3）Calcium silicates modified powder cladding process：
The calcium chloride solution of equivalent molar is added into 1mol EDETATE SODIUM solution, polyvinyl alcohol is added, is uniformly mixed,
It adds waterglass and forms white emulsion shape, calcium silicates superfines is made in washing, filtering, dry, grinding；
Gained n-capric acid-expanded perlite composite phase-change material in (2) is first impregnated into 22-24h in polyvinyl alcohol, adds silicon
In sour calcium superfines, excessive powder is screened out, the phase change grains of package are put into low temperature drying in drying box.
3. a kind of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding according to claim 2
Preparation method, which is characterized in that step（1）Middle concentration of hydrochloric acid is 10%, and surfactant is neopelex, hydrophobic
Agent is dimethyl silicone polymer, hydrolysis a concentration of 0.8%.
4. a kind of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding according to claim 2
Preparation method, which is characterized in that step（3）Middle polyvinyl alcohol concentration is 2%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436195.2A CN108559453A (en) | 2018-05-09 | 2018-05-09 | A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810436195.2A CN108559453A (en) | 2018-05-09 | 2018-05-09 | A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding |
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| Publication Number | Publication Date |
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| CN108559453A true CN108559453A (en) | 2018-09-21 |
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| CN201810436195.2A Withdrawn CN108559453A (en) | 2018-05-09 | 2018-05-09 | A kind of preparation method of positive certain herbaceous plants with big flowers acid-expanded perlite composite phase-change material of calcium silicates powder cladding |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114181666A (en) * | 2021-12-14 | 2022-03-15 | 中国地质大学（武汉） | Modified expanded perlite-based phase-change composite material and preparation method and application thereof |
-
2018
- 2018-05-09 CN CN201810436195.2A patent/CN108559453A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114181666A (en) * | 2021-12-14 | 2022-03-15 | 中国地质大学（武汉） | Modified expanded perlite-based phase-change composite material and preparation method and application thereof |
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Application publication date: 20180921 |