Properties

Terylene

Kapron

Polypropylene

Vinylon

Acid resistance

Strong

Poor

Excellent

not resistant to acid

Alkali resistance

Resistant to weak alkali

Excellent

High

Resistant to strong alkali

Electrical conductivity

Very poor

Fairly good

Excelletn

So-so

Elongation at break

30%-40%

18%-45%

Better than terylene

12%-25%

Recovery property

Excellent

90% up recovery rate at 10% longation

Slightly better than terylene

Fairly poor

Wear resistance

Excellent

Excellent

Good

Fairly good

Thermal endurance

170 °C

130 °C slight shrink

90 °C slight shrink

100 °C shrink

Softening point

230 -240 °C

180 °C

140 -150 °C

200 °C

M.P.

255 -265 °C

210 -215 °C

165 -170 °C

220 °C