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🧵 织物

🦺芳纶

芳香族聚酰胺:防弹层、热气体过滤、石棉替代。

又称: 凯夫拉 · Twaron · Twaron

芳纶 — Wikimedia lead image
Bodyarmor · CC BY-SA 3.0

速览

PPTA para-aramidStar
~500 °CDecomp
Chars, little meltFire
Kevlar 29/49Icon
Ballistics / compositesUse
textilesFamily

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

Scores compare 芳纶 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: 芳纶

芳纶 (PPTA (para) / meta-aramid cousin Nomex) is a family of grades whose density ~1.44 g/cm³, heat band does not melt; decomposes ~500 °C, and fire letter inherently FR vs commodity PA.

What “the material” actually is

芳纶 is sold as grades, not as a single substance. Chemistry PPTA (para) / meta-aramid cousin Nomex, density ~1.44 g/cm³, heat band does not melt; decomposes ~500 °C.

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

Heat, fire and insulation

Conductivity note: low radial; fibre anisotropic. Insulation score 36/100 is relative to 32 entries — metals lose, VIPs and aerogels win.

Fire letter in editorial use: inherently FR vs commodity PA. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.

How it is made and used

Origin: DuPont 1965 Kwolek, United States. The process chapter follows feedstock → conversion → forming → finish → install.

Uses span buildings to defence / safety. Pairings matter: nomex.

Market and circularity

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

Circularity mark 38/100. Ask which scrap, which certificate, which year.

画像

948280364038
强度 94
耐热 82
火灾性能 80
隔热 36
加工性 40
循环性 38

七章

常见问题

Is 芳纶 non-combustible?
Declared reaction class in this atlas: inherently FR vs commodity PA. Assemblies still need resistance tests.
Does 芳纶 insulate?
Thermal mark 36/100 versus the atlas. Conductivity note: low radial; fibre anisotropic.
What is the density band?
~1.44 g/cm³
How is it made?
Origin story: DuPont 1965 Kwolek (United States).
Can it be recycled?
Circularity mark 38/100 — editorial, route-specific.
Typical melting or failure heat?
does not melt; decomposes ~500 °C
What should it be paired with?
nomex: The meta-aramid fire cousin.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.

图标

Stephanie Kwolek

Stephanie Kwolek

United States · 1965

Stephanie Kwolek is a reference point in the public image of 芳纶.

Kevlar vest

Kevlar vest

United States · 1970s–

Kevlar vest is a reference point in the public image of 芳纶.

3

Twaron

Netherlands / JP · 1978–

Twaron is a reference point in the public image of 芳纶.

F1 fuel tank

F1 fuel tank

Global · 1980s–

F1 fuel tank is a reference point in the public image of 芳纶.

Sailing cables

Sailing cables

Global · 1990s–

Sailing cables is a reference point in the public image of 芳纶.

6

Hot-gas filter bag

Global · 1980s–

Hot-gas filter bag is a reference point in the public image of 芳纶.

Brake pulp

Brake pulp

Global · 1990s–

Brake pulp is a reference point in the public image of 芳纶.

8

Helmet shell hybrid

Global · 2000s–

Helmet shell hybrid is a reference point in the public image of 芳纶.

开关图标后,柱会按所选集合的领先者重新缩放。

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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。

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