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发表于 2007-11-14 00:26:45
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来自: 英国
楼上说的不对...熔点是342度...第2次熔是327度
, n2 H, b F# D7 _著名的性质有
% @9 u6 G! T, v9 K% W) ~High thermal stability
7 ?- ~: F4 J. `" N• Useful mechanical properties at extremely( F# }/ w' ~1 B5 r
low and high temperatures) T' M2 K" q4 G3 x, p; {
• Insolubility2 q4 c( y% q% h1 k
• Chemical inertness! d' Y+ o; r, d/ Q7 y8 W3 L1 I0 i
• Low coefficient of friction9 X9 G; Y) T/ Z( @# U
• Low dielectric constant/dissipation factor7 u* v5 H5 e1 s
• Low water ab/adsorptivity( z- V! ^+ z7 K1 }
• Excellent weatherability5 g) r6 I1 Y3 |4 C
• Flame resistance/ \ |) R; f* w+ x/ R
• Purity |
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