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✨ 先进固体

☁️气凝胶

纳米二氧化硅海绵:固体中最低λ之一,不做成毡就脆。

又称: 二氧化硅气凝胶 · frozen smoke · Aspen blankets

气凝胶 — Wikimedia lead image
Courtesy NASA/JPL-Caltech · Public domain

速览

~0.015–0.025 W/m·Kλ
>90%Air
Silica A1Fire
Stardust collectorIcon
Blankets not window panesForm
advancedFamily

气凝胶 is one of 32 materials in this atlas, grouped under advanced: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.

Scores compare 气凝胶 with the rest of the atlas on strength, heat, fire behaviour, insulation, workability and circularity. They are editorial, not certificates.

Seven chapters follow. Fire and insulation claims name test families (Euroclass, ASTM E84, ISO 5660, KS F) rather than inventing a single safety number.

深入阅读

Deep dive: 气凝胶

气凝胶 (SiO2 network + >90% air) is a family of grades whose density ~0.003–0.15 g/cm³, heat band silica sinters; organic aerogels burn, and fire letter silica A1; polymer aerogels not.

What “the material” actually is

气凝胶 is sold as grades, not as a single substance. Chemistry SiO2 network + >90% air, density ~0.003–0.15 g/cm³, heat band silica sinters; organic aerogels burn.

This atlas treats 气凝胶 as a system: mill route, coatings, tests and the cavity it sits in.

Heat, fire and insulation

Conductivity note: silica blankets ~0.015–0.025 W/m·K class. Insulation score 98/100 is relative to 32 entries — metals lose, VIPs and aerogels win.

Fire letter in editorial use: silica A1; polymer aerogels not. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.

How it is made and used

Origin: Kistler 1931; NASA / Aspen 1990s–, United States. The process chapter follows feedstock → conversion → forming → finish → install.

Uses span buildings to defence / safety. Pairings matter: vacuum-insulation.

Market and circularity

Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.

Circularity mark 50/100. Ask which scrap, which certificate, which year.

画像

128486982850
强度 12
耐热 84
火灾性能 86
隔热 98
加工性 28
循环性 50

七章

常见问题

Is 气凝胶 non-combustible?
Declared reaction class in this atlas: silica A1; polymer aerogels not. Assemblies still need resistance tests.
Does 气凝胶 insulate?
Thermal mark 98/100 versus the atlas. Conductivity note: silica blankets ~0.015–0.025 W/m·K class.
What is the density band?
~0.003–0.15 g/cm³
How is it made?
Origin story: Kistler 1931; NASA / Aspen 1990s– (United States).
Can it be recycled?
Circularity mark 50/100 — editorial, route-specific.
Typical melting or failure heat?
silica sinters; organic aerogels burn
What should it be paired with?
vacuum-insulation: The other ultra-low λ panel.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.

图标

1

Samuel Kistler

United States · 1931

Samuel Kistler is a reference point in the public image of 气凝胶.

Stardust aerogel

Stardust aerogel

United States · 1999–2006

Stardust aerogel is a reference point in the public image of 气凝胶.

Aspen Pyrogel

Aspen Pyrogel

United States · 2000s–

Aspen Pyrogel is a reference point in the public image of 气凝胶.

Mars rover insulation lore

Mars rover insulation lore

United States · 2000s

Mars rover insulation lore is a reference point in the public image of 气凝胶.

Translucent granule IGU

Translucent granule IGU

Europe · 2010s

Translucent granule IGU is a reference point in the public image of 气凝胶.

Pipe insulation

Pipe insulation

Oil & gas · 2000s–

Pipe insulation is a reference point in the public image of 气凝胶.

Silica gel cousin

Silica gel cousin

Global · historic

Silica gel cousin is a reference point in the public image of 气凝胶.

Frozen smoke photo

Frozen smoke photo

Labs · 1990s–

Frozen smoke photo is a reference point in the public image of 气凝胶.

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对决

同一家族、不同分数 — 选一场。

相近材料

六轴上最近的邻居 — 强度、耐热、火灾、隔热、加工性、循环性。

先进固体中的其他材料