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LATENT-HEAT STORAGE MATERIAL MICROCAPSULES AND PROCESS FOR PRODUCING LATENT-HEAT STORAGE MATERIAL MICROCAPSULES meetings

Foreign code F170009297
File No. (S2016-0744-N0)
Posted date Dec 7, 2017
Country WIPO
International application number 2017JP018587
International publication number WO 2017200021
Date of international filing May 17, 2017
Date of international publication Nov 23, 2017
Priority data
  • P2016-098815 (May 17, 2016) JP
Title LATENT-HEAT STORAGE MATERIAL MICROCAPSULES AND PROCESS FOR PRODUCING LATENT-HEAT STORAGE MATERIAL MICROCAPSULES meetings
Abstract According to the present invention, the surfaces of core particles are subjected to a boehmite treatment in a solution containing Al ions to thereby form a primary coating film, and thereafter the solution is cooled to a temperature at which the solution becomes supersaturated with Al ions, thereby precipitating aluminum hydroxide on the surface of the primary coating film to form a secondary coating film. This secondary coating film is heat-treated in an oxidizing atmosphere to thereby form an aluminum oxide coating film on the surfaces of the core particles. Thus, the shells are thickened by a thickness corresponding to the formation of the secondary coating film. Hence, the cycle strength of the capsules is ensured, and the PCM is significantly inhibited from changing in composition during the production process.
Scope of claims [claim1]
1. With the surface of the core particle transformation coating processing, the 1st step which forms primary tunic and,
The aforementioned core particle after the said 1st step ending being the step which processes in the solution which includes the Al ion, cooling the said solution to the temperature where the Al ion becomes oversaturation, making aluminum hydroxide the surface of the aforementioned primary tunic precipitate, the 2nd step which forms secondary tunic and,
The aforementioned secondary tunic heat-treating in oxidation atmosphere, it has the 3rd step which forms Al oxide skin on the surface of the aforementioned core particle, production method of the latent heat heat storage micro capsule.
[claim2]
2. With the surface of the core particle, transformation coating processing in the solution which includes the Al ion the 1st step which forms primary tunic and,
Cooling the aforementioned solution to the temperature where the Al ion becomes oversaturation, making aluminum hydroxide the surface of the aforementioned primary tunic precipitate, the 2nd step which forms secondary tunic and,
The aforementioned secondary tunic heat-treating in oxidation atmosphere, it has the 3rd step which forms Al oxide skin on the surface of the aforementioned core particle, production method of the latent heat heat storage micro capsule.
[claim3]
3. The solution which includes the aforementioned Al ion Al (OH) [is the solution which includes 3], the aforementioned aluminum hydroxide Al (OH) [includes 3], in claim 1 or 2 production method of the latent heat heat reservoir micro capsule of statement.
[claim4]
4. The aforementioned secondary tunic Al [2] O [3] is designated as tunic at the time of heat treatment of the aforementioned 3rd step, by accompanying the reaction which at least you follow the below-mentioned formula, in claim 3 production method of the latent heat heat reservoir micro capsule of statement.
Al (OH) [3] -->0.5Al [2] O [3] +1.5H [2] O.up.
[claim5]
5. Heat treatment of the aforementioned 3rd step, is executed at temperature above fusion point of the aforementioned core particle,
Either of claim 1-4 in 1 sections production method of latent heat heat reservoir micro capsule of statement.
[claim6]
6. The description above Al [2] O [3] tunic .alpha.-Al [2] O [3] executes the heat treatment of the aforementioned 3rd step, at the temperature which becomes tunic, in claim 4 production method of the latent heat heat reservoir micro capsule of statement.
[claim7]
7. PH value of the solution which includes the aforementioned Al ion is set to the range under 9.0 with 6.0 or more, either of the claim 1-6 in 1 sections production method of the latent heat heat reservoir micro capsule of statement.
[claim8]
8. The nuclear occurrence accelerator is made to contain to the solution which includes the aforementioned Al ion, either of the claim 1-7 in 1 sections production method of the latent heat heat reservoir micro capsule of statement.
[claim9]
9. As for the aforementioned nuclear occurrence accelerator sodium dodecyl sulfate (NaDS: sodium dodecyl sulfate) is, in claim 8 production method of the latent heat heat reservoir micro capsule of statement.
[claim10]
10. The aforementioned core particle is the Al alloy, in the claim 1-9 production method of the latent heat heat reservoir micro capsule of statement.
[claim11]
11. The aforementioned Al alloy is the Al-Si alloy, in claim 10 production method of the latent heat heat reservoir micro capsule of statement.
[claim12]
12. The aforementioned transformation tunic processing, sol gel method, anodic oxidation processing and alkali - chrome hydrochloric acid method, boehmite method and chrome hydrochloric acid method, phosphoric acid - is either chrome hydrochloric acid method, phosphoric acid zinc method or non chromate transformation tunic procedures, either of the claim 1-11 in 1 sections production method of the latent heat heat reservoir micro capsule of statement.
[claim13]
13. Chemical or physical processing is done on the surface of the aforementioned Al oxide skin, the step which forms the metal tunic or ceramic tunic for strengthening the mechanical strength furthermore is had, either of the claim 1-12 in 1 sections production method of the latent heat heat reservoir micro capsule of statement.
[claim14]
14. The step which it makes support or makes precipitate the catalyst material, or furthermore is had for the surface of the aforementioned Al oxide skin, either of the claim 1-12 in 1 sections production method of the latent heat heat reservoir micro capsule of statement.
[claim15]
15. The step which it makes support or makes precipitate the catalyst material, or furthermore is had for the surface of the aforementioned metal tunic or ceramic tunic, in claim 13 production method of the latent heat heat reservoir micro capsule of statement.
[claim16]
16. Dispersing the latent heat heat reservoir micro capsule which in the claim 1-15 is obtained with method of statement, in the heat-resistant basic material, it has the process which it makes support, production method of the heat exchange material.
[claim17]
17. Being the latent heat heat reservoir micro capsule where the surface of the core particle which consists of the latent heat heat storage material is covered with oxide skin,
The aforementioned oxide skin is oxide skin of 3 layer which consists of the 3rd oxide skin which covers 2nd oxide skin and the said 2nd oxide skin which cover 1st oxide skin and the said 1st oxide skin which cover the surface of the aforementioned core particle directly,
The aforementioned 1st oxide skin is the fine oxide skin which consists of the oxide of the constitution element of the aforementioned core particle,
The aforementioned 2nd oxide skin is the porous oxide skin which consists of the oxide of the constitution element of the aforementioned core particle,
It is the porous oxide skin where as for the aforementioned 3rd oxide skin, structure differs from the aforementioned 2nd oxide skin, consists of the oxide of the constitution element of the aforementioned core particle,
The latent heat heat reservoir micro capsule which features thing.
[claim18]
18. The aforementioned core particle is the Al alloy, in claim 17 the latent heat heat reservoir micro capsule of statement.
[claim19]
19. The aforementioned Al alloy is the Al-Si alloy, in claim 18 the latent heat heat reservoir micro capsule of statement.
[claim20]
20. The aforementioned 1st oxide skin .alpha.-Al [2] O [is the fine membrane of 3], in claim 18 the latent heat heat reservoir micro capsule of statement.
[claim21]
21. The aforementioned 2nd oxide skin .alpha.-Al [2] O [it is the porous membrane which consists of 3] mainly, in claim 18 the latent heat heat reservoir micro capsule of statement.
[claim22]
22. The aforementioned 3rd oxide skin .alpha.-Al [2] O [3] .theta.-Al [2] O [is the porous membrane where 3] exists together, in claim 18 the latent heat heat reservoir micro capsule of statement.
  • Applicant
  • ※All designated countries except for US in the data before July 2012
  • HOKKAIDO UNIVERSITY
  • Inventor
  • NOMURA TAKAHIRO
  • AKIYAMA TOMOHIRO
  • SHENG NAN
  • HANZAKI DAIKI
IPC(International Patent Classification)
Specified countries (WO2017200021)
National States: AE AG AL AM AO AT AU AZ BA BB BG BH BN BR BW BY BZ CA CH CL CN CO CR CU CZ DE DJ DK DM DO DZ EC EE EG ES FI GB GD GE GH GM GT HN HR HU ID IL IN IR IS JP KE KG KH KN KP KR KW KZ LA LC LK LR LS LU LY MA MD ME MG MK MN MW MX MY MZ NA NG NI NO NZ OM PA PE PG PH PL PT QA RO RS RU RW SA SC SD SE SG SK SL SM ST SV SY TH TJ TM TN TR TT TZ UA UG US UZ VC VN ZA ZM ZW
ARIPO: BW GH GM KE LR LS MW MZ NA RW SD SL SZ TZ UG ZM ZW
EAPO: AM AZ BY KG KZ RU TJ TM
EPO: AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR
OAPI: BF BJ CF CG CI CM GA GN GQ GW KM ML MR NE SN ST TD TG
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