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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

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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

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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

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Sol-gel process of making aerogel

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• 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

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10% 20% 30% 40% 50% 60% 80%

Nano-structure optimization

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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)

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TEMPLATE APPROACHED

Nanostructure features of silica hollow spheres (HS)

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As thermal insulation materials for windows

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As thermal insulation materials for windows

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As thermal insulation materialsfor windows

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Hybridization of silica aerogel and HS

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Thermal insulation applications• Energy efficient windows• Thermal insulation materials as wall fillers

Other applications• Fire-retardant packing materials • Sound insulator

Potential applications

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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

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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

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