What “the material” actually is
聚四氟乙烯 is sold as grades, not as a single substance. Chemistry (C2F4)n, density ~2.2 g/cm³, heat band ~327 °C.
This atlas treats 聚四氟乙烯 as a system: mill route, coatings, tests and the cavity it sits in.
速览
~327 °CTm
extremely lowμ
High LOI; fumesFire
TeflonIcon
Linings / tapeUse
polymersFamily
聚四氟乙烯 is one of 32 materials in this atlas, grouped under polymers: history, structure, measured properties, process routes, uses, safety and market — not a product catalogue.
Scores compare 聚四氟乙烯 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: 聚四氟乙烯
聚四氟乙烯 ((C2F4)n) is a family of grades whose density ~2.2 g/cm³, heat band ~327 °C, and fire letter high OI but pyrolysis fumes.
Heat, fire and insulation
Conductivity note: ~0.25 W/m·K. Insulation score 32/100 is relative to 32 entries — metals lose, VIPs and aerogels win.
Fire letter in editorial use: high OI but pyrolysis fumes. Do not equate A1 with “safe in a blaze” or E with “illegal”. Assemblies decide.
How it is made and used
Origin: DuPont 1938 Plunkett, United States. The process chapter follows feedstock → conversion → forming → finish → install.
Uses span buildings to defence / safety. Pairings matter: silicone.
Market and circularity
Producers below are landmarks, not an endorsement ranking. Prices are bands, not live quotes.
Circularity mark 24/100. Ask which scrap, which certificate, which year.
画像
强度
22
耐热
74
火灾性能
58
隔热
32
加工性
35
循环性
24
七章
常见问题
Is 聚四氟乙烯 non-combustible?
Declared reaction class in this atlas: high OI but pyrolysis fumes. Assemblies still need resistance tests.
Does 聚四氟乙烯 insulate?
Thermal mark 32/100 versus the atlas. Conductivity note: ~0.25 W/m·K.
What is the density band?
~2.2 g/cm³
How is it made?
Origin story: DuPont 1938 Plunkett (United States).
Can it be recycled?
Circularity mark 24/100 — editorial, route-specific.
Typical melting or failure heat?
~327 °C
What should it be paired with?
silicone: The other high-temp elastomer/plastic in kitchens.
Where is it specified?
Buildings, transport, energy and consumer goods — see the uses chapter.
图标
Roy Plunkett
United States · 1938
Roy Plunkett is a reference point in the public image of 聚四氟乙烯.
Teflon pan
France / US · 1960s–
Teflon pan is a reference point in the public image of 聚四氟乙烯.
Gore-Tex
United States · 1969–
Gore-Tex is a reference point in the public image of 聚四氟乙烯.
Thread tape
Global · 1970s–
Thread tape is a reference point in the public image of 聚四氟乙烯.
Pipe liner
Global · 1980s–
Pipe liner is a reference point in the public image of 聚四氟乙烯.
Labware
Global · 1950s–
Labware is a reference point in the public image of 聚四氟乙烯.
Space suits lore
United States · 1960s
Space suits lore is a reference point in the public image of 聚四氟乙烯.
Bearing pads
Global · 1970s–
Bearing pads is a reference point in the public image of 聚四氟乙烯.
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。