Upload
others
View
0
Download
0
Embed Size (px)
Citation preview
1
断熱性や安定性が高く、真空断熱パネルに比肩する
高性能エアロジェル断熱材料の開発
物質・材料研究機構
国際ナノアーキテクトニクス拠点(MANA)
無機ナノ構造ユニット
氏名 Rudder WU
2
Existing TechnologiesTRADITIONAL THERMAL INSULATION• Mineral Wool
-Glass wool (fibre glass)- Rock wool30-40 mW/mK
• Expanded Polystyrene (EPS)30-40 mW/mK
• Polyurethane (PUR)20-30 mW/mK
ENGINEERING MATERIALS• Wood
140 mW/mK•Concrete
1050 mW/mK• Glass
1380 mW/mK•Steel
46 W/mK
Mineral Wool
WHAT IS OUT
THERE?
EPS
XPS Cellulose
PCMGFP
VIP
STATE-OF THE ART THERMAL INSULATION•Vacuum Insulation Panels (VIP)
- evacuated foil-encapsulated open porous material
- core (silica, open porous, vacuum)- Foil (envelope)- 8 mW/mK
•Argon-Filled Panels (AFP)- 20 mW/mK
•Phase Change Materials (PCM)- solid state > liquid- Heat Storage and release
Cork
PUR
3
PROPERTIES・Density: 0.003 – 0.35 g.cm-3・Surface area: 600-1000m2.g-1・Porosity: 85%-99.87%・Thermal tolerance: 500°C・Thermal conductivity: 11mW.mK-1
Hydrolysis
Condensation
Features of this new technology
4
Sol-gel process of making aerogel
5
• Freshly prepared silica gels contain an appreciable amount of solvent (usually 70 to 90 wt %) which must be eliminated.
• The solid silica network formed by hydrolysis and polycondensation of Si alkoxides is made up by Silica species of a few tens of nanometer size.
• Capillary stress appears when the liquid move inside the pores during drying and form a liquid-gas curve interface
Sol-gel process of making aerogel
6
10% 20% 30% 40% 50% 60% 80%
Nano-structure optimization
7
EM
ULSIO
N
AP
PR
OA
CH
ED
NANO-SIZE HOLLOW PARTICLES
MICRO-SIZE HOLLOW PARTICLESHollowed SiO2 particle
SiO2coating
Washing or calcination
Polyelectrolyte/ammonia in ethanol
TEMPLATE APPROACHED
Synthesis of silica hollow spheres (HS)
8
TEMPLATE APPROACHED
Nanostructure features of silica hollow spheres (HS)
9
As thermal insulation materials for windows
10
As thermal insulation materials for windows
11
As thermal insulation materialsfor windows
12
Hybridization of silica aerogel and HS
13
Thermal insulation applications• Energy efficient windows• Thermal insulation materials as wall fillers
Other applications• Fire-retardant packing materials • Sound insulator
Potential applications
14
Expectation for industrial collaboration
1. to explore new applications for the use of this ultra-low thermal conductivity material
2. collaborative development and modification of this technology for new applications
15
発明の名称 : 耐熱コーティング材
出願番号 : 特願2010-096554
公開番号 : 特開2011-225930
登録番号 : 5660428
発明者 : ウーラダー/川岸京子/松本一秀/原田広史
出願人 : 国立研究開発法人物質・材料研究機構
本技術に関する知的財産権
16
お問い合わせ先
国立研究開発法人 物質・材料研究機構
外部連携部門 研究連携室 技術移転チーム
TEL:029-859-2600
FAX:029-859-2500
e-mail: [email protected]