CN102040949B - Preparation method of composite phase-change material - Google Patents
Preparation method of composite phase-change material Download PDFInfo
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- CN102040949B CN102040949B CN 201010563873 CN201010563873A CN102040949B CN 102040949 B CN102040949 B CN 102040949B CN 201010563873 CN201010563873 CN 201010563873 CN 201010563873 A CN201010563873 A CN 201010563873A CN 102040949 B CN102040949 B CN 102040949B
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Abstract
The invention relates to a preparation method of a composite phase-change material, belonging to the technical field of application of a new material. In the method, nano SiO2 powder having high adsorption property and nano TiO2 powder having an infrared shielding effect are used as substrates to adsorb paraffin so as to prepare a composite phase-change energy storage material. The preparation method comprises the following steps: A. placing a phase-change material in a beaker, heating the beaker in a thermostatic water bath, adding distilled water and emulsifying agent to the phase-change material, and carrying out high-speed shearing and emulsification with a high-shear emulsifying machine; B. uniformly mixing nano SiO2 and nano TiO2, and then, heating the mixture in a beaker; and C. pouring the phase-change material obtained after emulsification in the step A into the oxide powder in the step B, uniformly mixing, drying in an oven to obtain lumpish solids, and grinding the lumpish solids into powder. The invention has the advantages of simple process and low cost, can effectively solve the problem of leakage in the solid-liquid phase change process and can greatly improve the phase-change temperature, latent heat of phase change, thermal stability and heat storage effect of phase-change materials such as paraffin and the like.
Description
Technical field
The present invention relates to a kind of preparation method of composite phase-change material, particularly a kind of composite phase-change material that is formed by nano inorganic oxide and phase change material and preparation method thereof.Belong to the novel material applied technical field.
Background technology
Along with socioeconomic development, the mankind are increasing to the demand of the energy.But present global energy worsening shortages, irrational utilization simultaneously causes a large amount of wastes, makes people have to study novel energy-saving material, improves energy utilization rate.Wherein utilize phase change material to be considered to one of effective ways that improve energy utilization rate.
Phase change material have thermal storage density large, hold the nearly quasi-isothermal characteristics of exothermic process, can reach the purpose that stored energy and release and adjusting energy Supply and Demand mate.The characteristics such as heat storage capacity is large, stable in properties, cheapness become one of the hottest phase change material of current research to the phase change materials such as paraffin owing to having.But reveal during due to solid-liquid phase changes such as paraffin, must use container encloses, as in the application aspect building energy conservation, limited its use.In recent years, the researchist has considered that several different methods solves this problem, coat paraffin as paraffin microcapsule, gypsum base haydite Adsorption Paraffin, polyolefine typing, but the most complex process of these methods, preparation condition is harsh, cost is high, is difficult to be applied to actual production.
Summary of the invention
Technical problem to be solved by this invention is, a kind of preparation method of composite phase-change material is provided, and the composite phase-change material enthalpy of phase change of preparation is high, form stable.
The present invention adopts the nanometer SiO with high absorption property
2Powder and the nano-TiO with infrared shielding effect
2Powder is as matrix, and Adsorption Paraffin is prepared composite phase-change energy storage material.
The technical scheme that the present invention solve the technical problem employing is that a kind of preparation method of composite phase-change material comprises the following steps:
A. get phase change material 60-100g, put into beaker, beaker is placed in thermostat water bath in 90-100 ℃ is heated to fusing, then add 200-400ml distilled water in phase change material, the 2-4g emulsifying agent uses the emulsification of high-shear emulsion machine high speed shear;
Said phase change material is aliphatic hydrocarbon compound, as: paraffin, n-hexadecane, Octadecane, eicosane, pentacosane, hexacosane, nonacosane, pentatriacontane, hexatriacontane;
Said phase change material is acid compounds, as: tetradecanoic acid, pentadecylic acid, stearic acid, arachic acid;
Said phase change material can be one or more uniform mixture of above-mentioned organic compound.
Said emulsifying agent is Sodium dodecylbenzene sulfonate, calcium dodecylbenzene sulphonate.
B. with 30-40g nanometer SiO
2With the 5-10g nano-TiO
2Put into beaker after mixing, in 90-100 ℃ of heating 30-60 minute;
C. the phase change material that emulsification in steps A is obtained is poured in oxide powder in step B, evenly mixes, and puts into the electric heating convection oven and obtains blocks of solid in 50-55 ℃ of oven dry, wears into powder.
The composite phase-change material that is obtained by above step is under heating condition, and when Heating temperature surpassed the composite phase-change material transformation temperature, phase change material began fusing, changes gradually liquid phase into, absorbed the rising that heat slows down envrionment temperature; Under cooling conditions, when temperature dropped to transformation temperature, phase change material began to be transformed into solid phase, absorbed the decline that heat slows down envrionment temperature; The present invention adds nano-TiO in formula
2, can effectively play the effect of shielding ir radiation, make prepared composite phase-change material can more effectively realize the storage of heat energy, temperature controls environment.Preparation technology of the present invention is simple, with low cost, and the problem of revealing in the time of can not only effectively solving solid-liquid phase change improves a lot to transformation temperature, latent heat of phase change, thermostability and the heat accumulation effect of the phase change materials such as paraffin simultaneously.
Embodiment
Embodiment 1
With 30g nanometer SiO
2With the 10g nano-TiO
2Put into beaker after mixing, in 90 ℃ of heating 40 minutes.
Get paraffin 80g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add 300ml distilled water again in paraffin, the 2g Sodium dodecylbenzene sulfonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 50 ℃ of oven dry, wear into powder.
Embodiment 2
With 35g nanometer SiO
2With the 5g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes.
Get stearic acid 90g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 95 ℃, add 400ml distilled water again in stearic acid, the 2g calcium dodecylbenzene sulphonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
Embodiment 3
With 30g nanometer SiO
2With the 10g nano-TiO
2Put into beaker after mixing, in 90 ℃ of heating 40 minutes.
Get pentacosane 80g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add 300ml distilled water again in stearic acid, the 3g Sodium dodecylbenzene sulfonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 50 ℃ of oven dry, wear into powder.
Embodiment 4
With 35g nanometer SiO
2With the 5g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes.
Get arachic acid 90g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 95 ℃, add 400ml distilled water again in arachic acid, the 2g calcium dodecylbenzene sulphonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
Embodiment 5
With 32g nanometer SiO
2With the 8g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes.
Get each 40g of paraffin and stearic acid, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add wherein again 400ml distilled water, 1g calcium dodecylbenzene sulphonate and 2g Sodium dodecylbenzene sulfonate use the emulsification of high-shear emulsion machine high speed shear, pour into afterwards in nano-powder and evenly mix, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
Claims (6)
1. the preparation method of a composite phase-change material, the method adopts the nanometer SiO with high absorption property
2Powder and the nano-TiO with infrared shielding effect
2Powder is as matrix, and the absorption phase change material is prepared composite phase-change energy storage material, and it is realized by following processing step:
A. with 30-40g nanometer SiO
2With the 5-10g nano-TiO
2Put into beaker after mixing, in 90-100 ℃ of heating 30-60 minute;
B. get phase change material 60-100g, put into beaker, beaker is placed in thermostat water bath in 90-100 ℃ is heated to fusing, then add 200-400ml distilled water in phase change material, the 2-4g emulsifying agent uses the emulsification of high-shear emulsion machine high speed shear;
C. the phase change material that emulsification in step B is obtained is poured in nano oxide powder in steps A, evenly mixes, and puts into the electric heating convection oven and obtains blocks of solid in 50-55 ℃ of oven dry, wears into powder;
Described phase change material is selected from one or more the uniform mixture in paraffin, n-hexadecane, Octadecane, eicosane, pentacosane, hexacosane, nonacosane, pentatriacontane, hexatriacontane, tetradecanoic acid, pentadecylic acid, stearic acid, arachic acid;
Described emulsifying agent is Sodium dodecylbenzene sulfonate, calcium dodecylbenzene sulphonate.
2. the preparation method of composite phase-change material as claimed in claim 1, its concrete technology step is as described below:
With 30g nanometer SiO
2With the 10g nano-TiO
2Put into beaker after mixing, in 90 ℃ of heating 40 minutes;
Get paraffin 80g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add 300ml distilled water again in paraffin, the 2g Sodium dodecylbenzene sulfonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 50 ℃ of oven dry, wear into powder.
3. the preparation method of composite phase-change material as claimed in claim 1, its concrete technology step is as described below:
With 35g nanometer SiO
2With the 5g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes;
Get stearic acid 90g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 95 ℃, add 400ml distilled water again in stearic acid, the 2g calcium dodecylbenzene sulphonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
4. the preparation method of composite phase-change material as claimed in claim 1, its concrete technology step is as described below:
With 30g nanometer SiO
2With the 10g nano-TiO
2Put into beaker after mixing, in 90 ℃ of heating 40 minutes;
Get pentacosane 80g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add 300ml distilled water again in pentacosane, the 3g Sodium dodecylbenzene sulfonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 50 ℃ of oven dry, wear into powder.
5. the preparation method of composite phase-change material as claimed in claim 1, its concrete technology step is as described below:
With 35g nanometer SiO
2With the 5g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes;
Get arachic acid 90g, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 95 ℃, add 400ml distilled water again in arachic acid, the 2g calcium dodecylbenzene sulphonate uses the emulsification of high-shear emulsion machine high speed shear, pours into afterwards in nano-powder and evenly mixes, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
6. the preparation method of composite phase-change material as claimed in claim 1, its concrete technology step is as described below:
With 32g nanometer SiO
2With the 8g nano-TiO
2Put into beaker after mixing, in 95 ℃ of heating 40 minutes;
Get each 40g of paraffin and stearic acid, put into beaker, beaker is placed in thermostat water bath is heated to fusing in 90 ℃, add wherein again 400ml distilled water, 1g calcium dodecylbenzene sulphonate and 2g Sodium dodecylbenzene sulfonate use the emulsification of high-shear emulsion machine high speed shear, pour into afterwards in nano-powder and evenly mix, put into the electric heating convection oven and obtain blocks of solid in 55 ℃ of oven dry, wear into powder.
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| CN 201010563873 CN102040949B (en) | 2010-11-29 | 2010-11-29 | Preparation method of composite phase-change material |
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| CN102040949B true CN102040949B (en) | 2013-06-05 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN104479633B (en) * | 2014-11-19 | 2017-09-12 | 辽宁大学 | A kind of preparation method of paraffin silica composite phase-change energy storage material |
| CN106675000B (en) * | 2017-01-12 | 2019-03-22 | 中国工程物理研究院化工材料研究所 | The polyurethane elastomeric compositions and preparation method thereof of the paraffin swarms body of solid nano particle thickening |
| CN106751939A (en) * | 2017-01-12 | 2017-05-31 | 中国工程物理研究院化工材料研究所 | A kind of wax class aggregation of solid nano particle thickening and preparation method thereof |
| CN109021927A (en) * | 2017-06-09 | 2018-12-18 | 徐辉 | Phase-change heat-storage material composition and preparation method thereof for heat storage type electric heater |
| CN108147724A (en) * | 2017-12-29 | 2018-06-12 | 安徽乐享家装饰设计有限公司 | A kind of energy saving and environment friendly construction material |
| CN109504222B (en) * | 2018-11-07 | 2020-12-15 | 山东益利油漆有限公司 | Adding nano SiO2Water-based acrylic coating of hollow microspheres |
| CN113249096B (en) * | 2021-05-17 | 2022-02-11 | 河北科技大学 | Porous medium composite phase change material and preparation method and application thereof |
| CN116350727A (en) * | 2022-12-27 | 2023-06-30 | 北京蜜蜂堂生物医药股份有限公司 | Beeswax paste for wax therapy and preparation method thereof |
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|---|---|---|---|---|
| CN101368087A (en) * | 2007-10-22 | 2009-02-18 | 清华大学深圳研究生院 | Preparation method for composite phase-change energy accumulation material micro mist |
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| CN101368087A (en) * | 2007-10-22 | 2009-02-18 | 清华大学深圳研究生院 | Preparation method for composite phase-change energy accumulation material micro mist |
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