CN103374337A - Inorganic phase-change material (PCM-29) with phase-change temperature of 29 DEG C - Google Patents
Inorganic phase-change material (PCM-29) with phase-change temperature of 29 DEG C Download PDFInfo
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- CN103374337A CN103374337A CN2012101276043A CN201210127604A CN103374337A CN 103374337 A CN103374337 A CN 103374337A CN 2012101276043 A CN2012101276043 A CN 2012101276043A CN 201210127604 A CN201210127604 A CN 201210127604A CN 103374337 A CN103374337 A CN 103374337A
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Abstract
The invention relates to an inorganic phase-change constant-temperature material, particularly an inorganic phase-change material (PCM-29) with phase-change temperature of 29 DEG C. The inorganic phase-change material contains the following components in percentage by mass: 31% of calcium chloride hexahydrate, 11.5% of strontium chloride hexahydrate, 6% of sodium chloride, 3% of acrylic acid, 5% of glycerol, 4% of hydroxyethyl methacrylate, 3.5% of maleic anhydride, 2.5% of sodium carboxymethyl cellulose and 33.5% of water. The phase-change temperature of the phase-change material provided by the invention is 29 DEG C, the degree of supercooling is 0.5 DEG C, the phase-change latent heat is 223 KJ/KG, the phase-change process is reversible, the number of recycling times is more than 10000, all the raw materials are produced on a large scale and are nontoxic and non-corrosive, and thus, the invention is easy for popularization. The phase-change material is crystalloid at normal temperature, and thus, is convenient for development and utilization in various energy storage fields.
Description
Technical field:
The present invention relates to a kind of inorganic-phase variable constant-temp material and preparation method thereof, a kind of transformation temperature of special design is at 29 ℃ phase change material.
Background technology:
In numerous industries such as food, chemical industry, logistics, medical use, communication information machine room, workshop, generally utilize refrigerator to come the specified temp of environment or storage needs is carried out constant temperature.When refrigerator has a power failure, thus temperature recovery fast, can't keep best envrionment temperature.In the refrigeration system without phase-change constant-temperature material, when isoperibol was provided, refrigerator work started frequent, thereby has reduced its work-ing life, and current consumption is many.
Phase-change constant-temperature material is the latent heat cold-storage, is the functional materials of storage cold in the phase-change constant-temperature system.Utilize material latent heat that cold is stored in the phase-change constant-temperature material in the low power consumption phase at night, absorb natural cold quantity when discharging or utilizing temperature low the cold during peak of power consumption by day, satisfy environment or live required temperature thereby when temperature is high cold discharged.Such refrigeration system, most of the time absorbs natural cold quantity when operating in the low power consumption peak phase at night or utilizing nighttime temperature low, and high temperature peak times of power consumption only have the utility appliance operation by day, thereby the realization electrical network " is avoided the peak hour with cold, peak load shifting ", is conducive to alleviate energy both sides disparities between supply and demand.
Also fewer to the research of phase-change material for cold storage both at home and abroad at present, but in numerous industries such as food, chemical industry, low temperature logistics, medical use, communication information machine room, workshops, constant-temp material is had huge demand.Therefore study phase-change constant-temperature material, developing transformation temperature is 29 ℃, and latent heat of phase change is large, and condensate depression is little, and nothing is separated, novel, the phase-change constant-temperature material of stable performance, seems particularly important.
Phase change material stable performance provided by the present invention, transformation temperature are at 29 ℃, and condensate depression is 0.5 ℃, latent heat of phase change is 223KJ/KG, and phase transition process is reversible, and the number of times that can be recycled is more than 10000 times, starting material are scale production, and are nontoxic without corrosion, are easy to promote.This phase change material is crystalloid when normal temperature, is convenient to each energy storage field development and use.
Summary of the invention:
The object of the present invention is to provide a kind of synthetic by the inorganic salts material, stable performance, latent heat of phase change is large, and is nontoxic without corrosion, easily the good inorganic-phase variable constant-temp material of plasticity.
Inorganic-phase variable constant-temp material of the present invention is comprised of following by weight percentage:
Concrete preparation method:
1, in the configuration ware, be that 3% vinylformic acid is that 10% water is made into the aqueous solution with total configuration amount with total configuration amount under 30～40 ℃ of conditions;
2, be that 11.5% six water strontium chlorides join in the aqueous solution of step 1 with total configuration amount, mix, make mixing solutions;
3, adding total configuration amount in the mixing solutions of step 2 is 6% sodium-chlor, adds up allocation ratio again and be 5% water, stirs, and heats 1 hour, and temperature remains on about 45 ℃ and allows it fully react.
4, with total configuration amount be 5% glycerol to be added to total configuration amount be in 5% water, mix, make mixing solutions;
5, adding total configuration amount in the mixing solutions of step 4 is that 4% hydroxyethyl methylacrylate and 2.5% carboxy cellulose sodium stir;
6, solution in the solution of step 3 and the step 5 is stirred;
7, adding total configuration amount in the mixing solutions of step 6 is 31% calcium chloride hexahydrate, reacts 0.5～1.5 hour under 40～45 ℃, condition of normal pressure.
8, the total dosage of adding is 3.5% the intoxicated acid in Malaysia in the macromolecular material that step 7 is prepared, and stirs.
9, the total allocation ratio of adding residue is 13.5% water in the macromolecular material that step 8 is prepared, and stirs, and places to get final product in 10～15 minutes.
10, final Chemical Composition " inorganic-phase variable liquid polymer material "
Inorganic phase-changing material product specification of the present invention is
| Density: | 1.38g/cm 3(25℃) |
| Transformation temperature: | 29℃ |
| Latent heat: | 223kJ/kg |
| Thermal conductivity: | 0.55W/m.k |
| Condensate depression: | 0.5℃ |
| Access times | More than 10000 times |
The relation of the temperature and time of inorganic phase-changing material regelation of the present invention
Regelation is to make the condensing again in order to begin another energy absorption-release cycle of phase change material.
This inorganic-phase variable constant-temp material begins regelation in the time of 28.5 ℃, be 6 hours time of coagulation, reduction along with temperature, time of coagulation is corresponding shortening also, be 4.5 hours time of coagulation in the time of 17 ℃, be 2.5 hours time of coagulation in the time of 8 ℃, and be 1.5 hours time of coagulation in the time of 1 ℃, and be 1 hour time of coagulation in the time of 0 ℃.
The result shows: the change of the time of regelation along with the temperature difference increases sharply greatly.
The relation of inorganic phase-changing material control temperature and time of the present invention
When envrionment temperature is 35 ℃, phase change material control temperature capability and time are inversely proportional to, increase along with the time, the cold that phase change material discharges begins to reduce, this phase change material begins released cold quantity in the time of 29 ℃, and can to keep temperature-time be 14 hours, then just can heat up gradually, until phase change material melts fully, then equate with envrionment temperature.
Accompanying drawing and description of drawings
Fig. 1 is that a kind of transformation temperature of the present invention is preparation technology's schema of 29 ℃ inorganic phase-changing material
A is 31% calcium chloride hexahydrate
B is 11.5% 6 water strontium chloride
C is 6% sodium-chlor
D is 3% vinylformic acid
E is 5% glycerol
F is 4% hydroxyethyl methylacrylate
G is 3.5% maleic anhydride
H is 2.5% Xylo-Mucine
J is 10% water
K is 5% water
L is 5% water
M is 13.5% water
O is the aqueous solution that step 1 produces
P is the mixing solutions that step 2 produces
Q is the mixing solutions that step 3 produces
R is the mixing solutions that step 4 produces
S is the mixing solutions that step 5 produces
T is the mixing solutions that step 6 produces
U is the mixing solutions that step 7 produces
V is the mixing solutions that step 8 produces
W is phase-change constant-temperature material of the present invention
1 mixes under 30～40 ℃ of conditions
2 stirring heating 1 hour, temperature remains on about 45 ℃
3 reacted 0.5～1.5 hour under 40～45 ℃, condition of normal pressure
4 stir, and place 10～15 minutes
Fig. 2 is that a kind of transformation temperature of the present invention is the temperature-timing relationship of 29 ℃ inorganic phase-changing material regelation
This inorganic-phase variable constant-temp material begins regelation in the time of 28.5 ℃, be 6 hours time of coagulation, reduction along with temperature, time of coagulation is corresponding shortening also, be 4.5 hours time of coagulation in the time of 17 ℃, be 2.5 hours time of coagulation in the time of 8 ℃, and be 1.5 hours time of coagulation in the time of 1 ℃, and be 1 hour time of coagulation in the time of 0 ℃.
Fig. 3 is that a kind of transformation temperature of the present invention is 29 ℃ inorganic phase-changing material control temperature time curve
Article three, curve is respectively: outdoor environment temperature (35 ℃), variation and the variation of temperature when not using this inorganic-phase variable constant-temp material of temperature when using this inorganic-phase variable constant-temp material.Phase change material control temperature capability and time are inversely proportional to, increase along with the time, the cold that phase change material discharges begins to reduce, this phase change material begins released cold quantity in the time of 29 ℃, and can to keep temperature-time be 14 hours, then just can heat up gradually, until phase change material melts fully, then equate with envrionment temperature.
Claims (3)
1. the present invention relates to a kind of synthetic by inorganic matter, stable performance, latent heat of phase change is large, and is nontoxic without corrosion, easily the good inorganic-phase variable constant-temp material of plasticity.
Inorganic-phase variable constant-temp material of the present invention is comprised of following by weight percentage:
。
2. it is characterized in that according to inorganic-phase variable constant-temp material claimed in claim 1: employed material all is inorganics.
3. inorganic-phase variable constant-temp material according to claim 1 and 2 is characterized in that: transformation temperature is at 29 ℃, and condensate depression is 0.5 ℃, and latent heat of phase change is 223KJ/KG, and phase transition process is reversible, and the number of times that can be recycled is more than 10000 times.
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| CN201210127604.3A CN103374337B (en) | 2012-04-27 | 2012-04-27 | A kind of transformation temperature is the inorganic phase-changing material (PCM-29) of 29 DEG C |
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| CN103374337B CN103374337B (en) | 2015-09-09 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105316789A (en) * | 2015-09-30 | 2016-02-10 | 贵州华益能环保科技有限公司 | Preparation method and application of inorganic composite phase-change energy storage filament |
| CN110878199A (en) * | 2018-09-06 | 2020-03-13 | 陕西久维电力工程有限公司 | Composite phase change material |
| CN111117573A (en) * | 2019-12-25 | 2020-05-08 | 北京中海前沿材料技术有限公司 | Inorganic phase-change constant-temperature material and preparation method thereof |
| CN115537184A (en) * | 2022-10-19 | 2022-12-30 | 福建傲农生物科技集团股份有限公司 | Phase-change material for refrigerating and transporting boar semen and preparation method thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570016A (en) * | 2004-04-23 | 2005-01-26 | 清华大学 | Macromolecule material cold keeping agent making method |
| CN102079971A (en) * | 2010-03-09 | 2011-06-01 | 上海海事大学 | Phase-change material for storing day/night temperature difference energy and preparation method thereof |
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2012
- 2012-04-27 CN CN201210127604.3A patent/CN103374337B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1570016A (en) * | 2004-04-23 | 2005-01-26 | 清华大学 | Macromolecule material cold keeping agent making method |
| CN102079971A (en) * | 2010-03-09 | 2011-06-01 | 上海海事大学 | Phase-change material for storing day/night temperature difference energy and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105316789A (en) * | 2015-09-30 | 2016-02-10 | 贵州华益能环保科技有限公司 | Preparation method and application of inorganic composite phase-change energy storage filament |
| CN110878199A (en) * | 2018-09-06 | 2020-03-13 | 陕西久维电力工程有限公司 | Composite phase change material |
| CN110878199B (en) * | 2018-09-06 | 2021-09-14 | 陕西久维电力工程有限公司 | Composite phase change material |
| CN111117573A (en) * | 2019-12-25 | 2020-05-08 | 北京中海前沿材料技术有限公司 | Inorganic phase-change constant-temperature material and preparation method thereof |
| CN115537184A (en) * | 2022-10-19 | 2022-12-30 | 福建傲农生物科技集团股份有限公司 | Phase-change material for refrigerating and transporting boar semen and preparation method thereof |
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| CN103374337B (en) | 2015-09-09 |
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