1965
Kwolek PPTA
Stephanie Kwolek’s liquid-crystal solution spinning at DuPont.
芳纶 did not arrive as a finished commodity. DuPont 1965 Kwolek around United States still explains who makes it and which tests it sits in.
Ten dated points, five eras and three milestones below are the spine — not a complete industrial history.
起源
DuPont 1965 KwolekUnited States
年表
1965Kwolek PPTA
Stephanie Kwolek’s liquid-crystal solution spinning at DuPont.
1971Kevlar commercial
First markets: tyres and later vests.
1972Nomex already
Meta-aramid (1960s) had the fire-fighter story; para took strength.
1978Twaron
Akzo (now Teijin) European para-aramid.
1980sHelmets & vests
NIJ ballistic standards met para-aramid packs.
1990sAsbestos brakes
芳纶 pulp in friction materials.
2000sUHMWPE rivalry
Dyneema/Spectra took some ballistic mass.
2010sHoneywell / Teijin capacity
Geopolitical fibre lists.
2010sOptical fibre cables
Yarn as strength member.
2020sRecycling R&D
Hard to remelt; chemical routes immature.
时代
1972
Nomex already
Meta-aramid (1960s) had the fire-fighter story; para took strength.
1980s
Helmets & vests
NIJ ballistic standards met para-aramid packs.
2000s
UHMWPE rivalry
Dyneema/Spectra took some ballistic mass.
2010s
Optical fibre cables
Yarn as strength member.
里程碑
Twaron
1978Akzo (now Teijin) European para-aramid.
UHMWPE rivalry
2000sDyneema/Spectra took some ballistic mass.
Recycling R&D
2020sHard to remelt; chemical routes immature.
Knowing this timeline is how to read a mill certificate without treating 芳纶 as timeless.