CN102002342A - Method for preparing waste acrylic fiber and fatty acid combined phase change material - Google Patents
Method for preparing waste acrylic fiber and fatty acid combined phase change material Download PDFInfo
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- CN102002342A CN102002342A CN2010102970019A CN201010297001A CN102002342A CN 102002342 A CN102002342 A CN 102002342A CN 2010102970019 A CN2010102970019 A CN 2010102970019A CN 201010297001 A CN201010297001 A CN 201010297001A CN 102002342 A CN102002342 A CN 102002342A
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- change material
- phase change
- waste silk
- lipid acid
- acrylic fibres
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- 239000012782 phase change material Substances 0.000 title claims abstract description 59
- 229920002972 Acrylic fiber Polymers 0.000 title claims abstract description 51
- 239000002699 waste material Substances 0.000 title claims abstract description 49
- 238000000034 method Methods 0.000 title abstract description 11
- 235000014113 dietary fatty acids Nutrition 0.000 title abstract description 5
- 229930195729 fatty acid Natural products 0.000 title abstract description 5
- 239000000194 fatty acid Substances 0.000 title abstract description 5
- 150000004665 fatty acids Chemical class 0.000 title abstract description 5
- 229920000642 polymer Polymers 0.000 claims abstract description 27
- 238000002360 preparation method Methods 0.000 claims abstract description 18
- 238000003756 stirring Methods 0.000 claims abstract description 13
- 239000000463 material Substances 0.000 claims abstract description 8
- 239000002253 acid Substances 0.000 claims description 40
- 150000002632 lipids Chemical class 0.000 claims description 40
- 150000001875 compounds Chemical class 0.000 claims description 22
- 235000021355 Stearic acid Nutrition 0.000 claims description 17
- QIQXTHQIDYTFRH-UHFFFAOYSA-N octadecanoic acid Chemical compound CCCCCCCCCCCCCCCCCC(O)=O QIQXTHQIDYTFRH-UHFFFAOYSA-N 0.000 claims description 17
- OQCDKBAXFALNLD-UHFFFAOYSA-N octadecanoic acid Natural products CCCCCCCC(C)CCCCCCCCC(O)=O OQCDKBAXFALNLD-UHFFFAOYSA-N 0.000 claims description 17
- 239000008117 stearic acid Substances 0.000 claims description 17
- 239000002244 precipitate Substances 0.000 claims description 16
- 241000237502 Ostreidae Species 0.000 claims description 12
- 238000001035 drying Methods 0.000 claims description 12
- 235000020636 oyster Nutrition 0.000 claims description 12
- 238000010992 reflux Methods 0.000 claims description 12
- 239000004372 Polyvinyl alcohol Substances 0.000 claims description 10
- 229920002451 polyvinyl alcohol Polymers 0.000 claims description 10
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 239000002131 composite material Substances 0.000 claims description 9
- 239000000243 solution Substances 0.000 claims description 8
- 239000000203 mixture Substances 0.000 claims description 7
- 239000007864 aqueous solution Substances 0.000 claims description 6
- 239000002808 molecular sieve Substances 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000003795 chemical substances by application Substances 0.000 claims description 4
- 238000001556 precipitation Methods 0.000 claims description 4
- URGAHOPLAPQHLN-UHFFFAOYSA-N sodium aluminosilicate Chemical compound [Na+].[Al+3].[O-][Si]([O-])=O.[O-][Si]([O-])=O URGAHOPLAPQHLN-UHFFFAOYSA-N 0.000 claims description 4
- 238000006243 chemical reaction Methods 0.000 claims description 2
- 230000035484 reaction time Effects 0.000 claims 1
- 230000008901 benefit Effects 0.000 abstract description 4
- 238000004064 recycling Methods 0.000 abstract description 4
- 239000002904 solvent Substances 0.000 abstract description 4
- 238000003912 environmental pollution Methods 0.000 abstract description 2
- 239000000835 fiber Substances 0.000 abstract description 2
- 229920002239 polyacrylonitrile Polymers 0.000 abstract description 2
- 229920002521 macromolecule Polymers 0.000 abstract 1
- 239000012716 precipitator Substances 0.000 abstract 1
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 16
- 239000005639 Lauric acid Substances 0.000 description 8
- 238000007493 shaping process Methods 0.000 description 7
- 238000004146 energy storage Methods 0.000 description 6
- 239000011232 storage material Substances 0.000 description 5
- 238000001816 cooling Methods 0.000 description 4
- 238000002513 implantation Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 4
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 3
- 230000008859 change Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000007062 hydrolysis Effects 0.000 description 3
- 238000006460 hydrolysis reaction Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- 230000007704 transition Effects 0.000 description 3
- 230000009471 action Effects 0.000 description 2
- 125000004093 cyano group Chemical group *C#N 0.000 description 2
- 238000004090 dissolution Methods 0.000 description 2
- 125000001183 hydrocarbyl group Chemical group 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052901 montmorillonite Inorganic materials 0.000 description 2
- -1 organo montmorillonite Chemical compound 0.000 description 2
- 230000000704 physical effect Effects 0.000 description 2
- 238000005382 thermal cycling Methods 0.000 description 2
- 229920002125 Sokalan® Polymers 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000000654 additive Substances 0.000 description 1
- 230000000996 additive effect Effects 0.000 description 1
- 238000009435 building construction Methods 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000002425 crystallisation Methods 0.000 description 1
- 230000008025 crystallization Effects 0.000 description 1
- 125000004122 cyclic group Chemical group 0.000 description 1
- 238000006731 degradation reaction Methods 0.000 description 1
- 238000001938 differential scanning calorimetry curve Methods 0.000 description 1
- 230000008034 disappearance Effects 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000005496 eutectics Effects 0.000 description 1
- 230000004927 fusion Effects 0.000 description 1
- 238000005469 granulation Methods 0.000 description 1
- 230000003179 granulation Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000002329 infrared spectrum Methods 0.000 description 1
- 238000005342 ion exchange Methods 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 239000000178 monomer Substances 0.000 description 1
- 230000000877 morphologic effect Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000005191 phase separation Methods 0.000 description 1
- 229920001495 poly(sodium acrylate) polymer Polymers 0.000 description 1
- 239000004584 polyacrylic acid Substances 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 229920005989 resin Polymers 0.000 description 1
- 239000011347 resin Substances 0.000 description 1
- NNMHYFLPFNGQFZ-UHFFFAOYSA-M sodium polyacrylate Chemical compound [Na+].[O-]C(=O)C=C NNMHYFLPFNGQFZ-UHFFFAOYSA-M 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 230000004580 weight loss Effects 0.000 description 1
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- Separation, Recovery Or Treatment Of Waste Materials Containing Plastics (AREA)
- Treatments For Attaching Organic Compounds To Fibrous Goods (AREA)
Abstract
The invention relates to a method for preparing a waste acrylic fiber and fatty acid combined phase change material, which comprises: preparing uniform polymer solution by stirring waste acrylic fibers and fatty acid in a solvent; and allowing the polymer solution to precipitate in a precipitator quickly. Macro molecules of polyacrylonitrile and molecules of fatty acid are agglomerated together through the intermolecular forces, so that the phase change material does not seeps out even the outside temperature reaches 100 DEG C. The amorphous phase change material prepared by the method has the advantages that: the enthalpy value and thermal stability are high; the preparation method is simple; the cost is low; the solvent can be recycled; and the like. The method realizes waste fiber recycling, reduces environmental pollution and provides a new energy-saving material for the society. The invention is a new project with low cost, high profit and sufficient resources, and has a bright development prospect.
Description
Technical field
The invention belongs to the phase-changing energy storage material technical field, be specifically related to a kind of preparation method who utilizes acrylic fibres waste silk and the compound shaping phase-change material of lipid acid.
Background technology
Phase-changing energy storage material is to utilize heat absorption and the exothermic effect of material in phase transition process, carries out the material of thermal energy storage and temperature adjusting.Phase change material has approximately constant temperature in phase transition process; system temperature such as can control at advantage; obtained utilizing preferably in the fields such as insulation of recycling, clothes bed clothes and the building construction of sun power utilization, used heat and waste heat, and at alleviating energy crisis, improve aspect such as energy utilization rate and brought into play important effect.
Acrylic fibers because of structural reason can not be by heat fusing granulation again regeneration, can not reclaim monomer with the method for thermo-cracking, but have active cyano group in its molecular structure (C ≡ N), can utilize cyano group to transform, acrylic fibers are reclaimed and are utilized.Existing report obtains polyacrylic acid or sodium polyacrylate with waste and old acrylic fibers hydrolysis, is used to prepare High hydrophilous resin, ion-exchange fiber, drilling well additive etc., but the rarely seen report of using it for the preparation phase change material.
In phase-changing energy storage material, lipid acid has advantages such as higher enthalpy of phase change, no surfusion, corrodibility be little.But be difficult to satisfy in the practical application the demand of different transformation temperatures at the lipid acid of one-component, often seek binary lipid acid compound system.Because lipid acid has phase mixcibility preferably, several lipid acid can be carried out consolute and handle, form binary or polybasic eutectic system, to reduce the fusing point of material, obtain the phase change material of temperature of fusion a wider range, superior performance, make it to obtain better application.Though document report employing binary lipid acid is direct and inorganic particulate is compound to obtain phase change material, there are serious problems such as phase change material seepage in this phase change material.
Summary of the invention
For addressing the above problem, the invention provides a kind of preparation method who utilizes acrylic fibres waste silk and the compound shaping phase-change material of lipid acid, this method is a kind of recovery and utilization technology of acrylic fibres waste silk cheaply; Gu a kind of novel solid-energy storage material can be provided again.The phase change material phase transition process form stable of the present invention's preparation,, polyacrylonitrile macromole and fatty acid molecule are agglomerated together by Intermolecular Forces, even outside temperature reaches 100 ℃, phase change material can not ooze out yet.Except that the characteristics that possess common shaping phase-change material, also have higher enthalpy, heat-insulating property preferably.Therefore it can be used as a kind of new phase change material and is applied in accumulation of heat and energy-saving field widely.
The present invention can be achieved by the following technical programs:
The first step, under 60～90 ℃, press certain mass than with acrylic fibres waste silk, lipid acid, N, dinethylformamide joins in the reactor, stirring and refluxing 10～40min obtains uniform oyster white polymers soln; Wherein said acrylic fibres waste silk, lipid acid and N, the mass ratio of dinethylformamide are 1: 1～4: 4～25, and lipid acid is stearic acid or stearic acid and lauric mixture, and stearic acid and lauric mass ratio are 1: 2～5.02 in the mixture.
Second step, the polymers soln of the first step gained is injected precipitation agent, occur white precipitate in the solution, white precipitate is separated after drying, be the compound phase change material of acrylic fibres waste silk and lipid acid; Wherein said precipitation agent is the aqueous solution of water or polyvinyl alcohol, and the massfraction of the aqueous solution of polyvinyl alcohol is 15～25%.
The present invention can also be by the certain mass ratio with acrylic fibres waste silk, inorganic particulate, lipid acid, N, dinethylformamide joins in the reactor, stirring and refluxing 10～40min, obtain uniform oyster white polymers soln, wherein used inorganic particulate is any one of polynite or molecular sieve, its consumption be in the reactor raw material total mass 0.829%～3.57%; Polymers soln is injected the aqueous solution of polyvinyl alcohol, occur white precipitate in the solution,, be the compound phase change material of inoganic particle modified acrylic fibres waste silk and lipid acid the precipitate and separate after drying.
Compare with other disclosed setting phase change energy storage material and preparation method, the present invention has following advantage:
1, the propping material of shaping phase-change material of the present invention is selected acrylic fibres waste silk, not only solve acrylic fibres waste silk and recycled a difficult problem, realized the resource recycling, reduced environmental pollution, and acrylic fibres waste silk has reduced very big cost directly by the dissolution with solvents utilization than recycling by hydrolysis.
2, the enthalpy of phase change of the prepared shaping phase-change material of the present invention is higher, reaches 170J/g.
3, the prepared shaping phase-change material of the present invention has good morphological stability and thermostability, even still can keep solid-form Gu temperature reaches 110 ℃.Its reason be acrylic fibres waste silk, lipid acid in the blend process, produced the certain physical effect between the polymer macromolecular chain and existed, as only there being quite weak model ylid bloom action power between hydrocarbon chain, have stronger hydrogen bond etc. between the polar group.After temperature surpasses the fusing point of lipid acid,, can from composite phase-change material, not ooze out because lipid acid is subjected to the constraint of Intermolecular Forces yet.
4, preparation technology of the present invention is simple, the raw material acrylic fibres waste silk that adopts not only price is low, and directly by the dissolution with solvents utilization, recycle by hydrolysis method with it and to compare, reduced very big cost.
Description of drawings
The infrared spectrogram of Fig. 1, stearic acid, lauric acid, acrylic fibres waste silk and composite phase-change material.
The stereoscan photograph of Fig. 2, gained composite phase-change material of the present invention.
The composite phase-change material DSC heating curve of Fig. 3, gained of the present invention.
The DSC temperature lowering curve of the composite phase-change material of Fig. 4, gained of the present invention.
Cooling curve under the composite phase-change material thermal cycling of Fig. 5, gained of the present invention.
The thermogravimetric curve of the composite phase-change material of Fig. 6, gained of the present invention.
Embodiment
Embodiment 1:
With acrylic fibres waste silk 2g, lauric acid 6.67g, stearic acid 1.33g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 90 ℃ of stirring and refluxing.Polymers soln is injected water, white precipitate occurs, be the compound phase change material of acrylic fibres waste silk and lipid acid after the drying.
Above-mentioned shaping phase-change material and preparation raw material thereof are carried out the analysis of infrared spectra (see figure 1), this spectrogram of inventing prepared phase change material be not three kinds of raw materials simply adding and, and the disappearance at Partial Feature peak and the generation of new characteristic peak are arranged, although illustrate between isonomic lipid acid stearic acid and the lauric acid, can not produce chemical reaction between acrylic fibers (PAN) and the binary lipid acid, there is the certain physical effect to exist between the three of back but mix, as only there being quite weak model ylid bloom action power between hydrocarbon chain, there is stronger hydrogen bond etc. between the polar group.And pass through the scanning electron microscope (see figure 2) and should invent each uniform component distribution in the prepared phase change material as can be seen, there is not phenomenon of phase separation, the phase variant is by in the firm skeleton propping material that is fixed on PAN.
By differential scanning research (seeing Fig. 3, Fig. 4), the melting enthalpy of the phase change material that this invention is prepared is 152.42J/g, crystallization enthalpy is 135.80J/g, and the DSC thermal cycling is found out after eliminating thermal history, the DSC cyclic curve of phase change material overlaps substantially, shows this phase change material good thermal stability.And the cooling curve (see figure 5) demonstration that should invent prepared phase change material, phase change material platform occurs at 29 ℃, and the platform time can be near 1060s.The cooling curve of this phase change material heating for multiple times shows that this material has good insulation stability simultaneously, and with the increase of times of thermal cycle, heat insulation effect does not weaken.The cooling curve (see figure 6) of the phase change material that this invention is prepared shows that the thermal weight loss scope of phase change material degraded is 180 ℃～500 ℃, and locates to occur two very big degradation rate districts at 252 ℃ with 346 ℃, and this composition with phase change material is relevant.Thermogravimetric curve shows that the prepared phase change material of this invention uses in being lower than 180 ℃ environment stable.
Embodiment 2:
With acrylic fibres waste silk 5g, lauric acid 3.33g, stearic acid 1.67g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 60 ℃ of stirring and refluxing.With polymers soln implantation quality mark is in 15% polyvinyl alcohol water solution, white precipitate occurs,
Be the compound phase change material of acrylic fibres waste silk and lipid acid after the drying.
Embodiment 3:
The preparation of acrylic fibres waste silk and stearic acid composite phase-change material: with acrylic fibres waste silk 4g, stearic acid 6g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 60 ℃ of stirring and refluxing.Polymers soln is injected water, white precipitate occurs, be the compound phase change material of acrylic fibres waste silk and lipid acid after the drying.
Embodiment 4:
With acrylic fibres waste silk 2g, stearic acid 8g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 90 ℃ of stirring and refluxing.It is 25% polyvinyl alcohol water solution that polymers soln is injected the implantation quality mark, white precipitate occurs, is the compound phase change material of acrylic fibres waste silk and lipid acid after the drying.
Embodiment 5:
With acrylic fibres waste silk 3.75g, organo montmorillonite 1.25g, lauric acid 3.33g, stearic acid 1.67g,, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 90 ℃ of stirring and refluxing.Polymers soln is injected water, white precipitate occurs, be imvite modified acrylic fibres waste silk/compound phase change material of binary lipid acid after the drying.
Embodiment 6:
With acrylic fibres waste silk 1.71g, organo montmorillonite 0.29g, lauric acid 5.33g, stearic acid 2.67g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 60 ℃ of stirring and refluxing.With polymers soln implantation quality mark is in 15% polyvinyl alcohol water solution, white precipitate occurs, is imvite modified acrylic fibres waste silk/compound phase change material of binary lipid acid after the drying.
Embodiment 7:
With acrylic fibres waste silk 3.75g, molecular sieve 1.25g, lauric acid 3.33g, stearic acid 1.67g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 90 ℃ of stirring and refluxing.Polymers soln is injected water, white precipitate occurs, be molecular sieve modified acrylic fibres waste silk/compound phase change material of binary lipid acid after the drying.
Embodiment 8:
With acrylic fibres waste silk 1.71g, molecular sieve 0.29g, lauric acid 5.33g, stearic acid 2.67g, N, dinethylformamide (DMF) 25g adds in the there-necked flask, after for some time, obtains uniform oyster white polymers soln in 60 ℃ of stirring and refluxing.With polymers soln implantation quality mark is in 25% polyvinyl alcohol water solution, white precipitate occurs, is molecular sieve modified acrylic fibres waste silk/compound phase change material of binary lipid acid after the drying.
Claims (7)
1. the preparation method of acrylic fibres waste silk and the compound phase change material of lipid acid is characterized in that the concrete operations step is as follows:
The first step, with acrylic fibres waste silk, lipid acid, N, dinethylformamide joins in the reactor, stirring and refluxing obtains uniform oyster white polymers soln;
Second step, polymers soln is injected precipitation agent, occur white precipitate in the solution, will precipitate after the drying promptly.
2. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid is characterized in that acrylic fibres waste silk in the first step, lipid acid, N, and the temperature of reaction of dinethylformamide is 60～90 ℃, and the reaction times is 10～40 minutes.
3. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid, the mass ratio that it is characterized in that joining the raw material in the reactor is an acrylic fibres waste silk: lipid acid: N, dinethylformamide=1: 1～4: 4～25.
4. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid, it is characterized in that the lipid acid described in the first step is stearic acid or stearic acid and lauric mixture, stearic acid and lauric mass ratio are 1: 2～5.02 in the mixture.
5. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid, it is characterized in that described acrylic fibres waste silk the preparation composite phase-change material in as the skeleton propping material.
6. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid is characterized in that the precipitation agent described in second step is the aqueous solution of water or polyvinyl alcohol, and wherein the aqueous solution massfraction of polyvinyl alcohol is 15～25%.
7. the preparation method of a kind of acrylic fibres waste silk according to claim 1 and the compound phase change material of lipid acid is characterized in that the concrete operations step is as follows:
The first step, with acrylic fibres waste silk, inorganic particulate, lipid acid, N, dinethylformamide joins in the reactor, stirring and refluxing obtains uniform oyster white polymers soln;
Second step, polymers soln is injected the aqueous solution of polyvinyl alcohol, occur white precipitate in the solution, will precipitate after the drying promptly;
Wherein used inorganic particulate is polynite or molecular sieve, its consumption be in the reactor raw material total mass 0.829%～3.57%.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297001 CN102002342B (en) | 2010-09-26 | 2010-09-26 | Method for preparing waste acrylic fiber and fatty acid combined phase change material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010297001 CN102002342B (en) | 2010-09-26 | 2010-09-26 | Method for preparing waste acrylic fiber and fatty acid combined phase change material |
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| Publication Number | Publication Date |
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| CN102002342A true CN102002342A (en) | 2011-04-06 |
| CN102002342B CN102002342B (en) | 2013-05-08 |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465648A (en) * | 2002-06-17 | 2004-01-07 | 中国人民解放军第二军医大学 | Phase change energy storage composite material and preparation process thereof |
| CN1493720A (en) * | 2003-07-02 | 2004-05-05 | 东华大学 | Phase change composite spinning solution and its preparation and application |
| CN1850937A (en) * | 2005-04-22 | 2006-10-25 | 财团法人纺织产业综合研究所 | High temperature-resistant polymer phase-transition material |
| CN1908258A (en) * | 2006-08-10 | 2007-02-07 | 中国科学院广州化学研究所 | Phase-change energy-storage ultra-fine composite fiber and preparation method and application thereof |
| US20080292560A1 (en) * | 2007-01-12 | 2008-11-27 | Dov Tamarkin | Silicone in glycol pharmaceutical and cosmetic compositions with accommodating agent |
-
2010
- 2010-09-26 CN CN 201010297001 patent/CN102002342B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1465648A (en) * | 2002-06-17 | 2004-01-07 | 中国人民解放军第二军医大学 | Phase change energy storage composite material and preparation process thereof |
| CN1493720A (en) * | 2003-07-02 | 2004-05-05 | 东华大学 | Phase change composite spinning solution and its preparation and application |
| CN1850937A (en) * | 2005-04-22 | 2006-10-25 | 财团法人纺织产业综合研究所 | High temperature-resistant polymer phase-transition material |
| CN1908258A (en) * | 2006-08-10 | 2007-02-07 | 中国科学院广州化学研究所 | Phase-change energy-storage ultra-fine composite fiber and preparation method and application thereof |
| US20080292560A1 (en) * | 2007-01-12 | 2008-11-27 | Dov Tamarkin | Silicone in glycol pharmaceutical and cosmetic compositions with accommodating agent |
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Application publication date: 20110406 Assignee: Liaoyang Yilong composite material fine chemical factory Assignor: Dalian Polytechnic University Contract record no.: 2013210000063 Denomination of invention: Method for preparing waste acrylic fiber and fatty acid combined phase change material Granted publication date: 20130508 License type: Common License Record date: 20130627 |
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