大家来讨论: Dupont PA66 (101F) 是否适合用做变压器胶芯/骨架?

anquanbiao

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RTI str 这个应该不需要, 应该看RTI (Elec)...

Collin

引用第20楼anquanbiao于2008-03-03 16:58发表的  :
7 ?. P9 k# ?/ |3 l% }RTI str 这个应该不需要, 应该看RTI (Elec)...

UL 1446中要求替代绝缘要考虑电气的和机械的温度指数(见附文), 但是在实际的UL绝缘系统中，则不一定. 比如P LEO(E20050)的B81绝缘系统，是Class B的， 但是包含Dupont的101F这种材料. 这个怎么理解?
附:
; U' ^- q$ }7 S+ y: u) O% K3 b8.5.4 An encapsulant, ground, or interwinding insulation whose principal constituents (base resin, filler,
: _7 l* c% R! q0 F9 n% u- v# i/ vreinforcement, flame retardant, heat stabilizer, and anti-oxidant) are found, based on documentation, to
3 w/ q- i! Y, a4 ube identical in composition and proportion to those of an encapsulant, ground, or interwinding insulation
8 _* J# F: [6 T# hpresently specified in an insulation system shall be accepted in the system without additional tests when
both the following conditions are met:
) t; u& a9 s# F( ], u4 E+ W0 G9 x( z8 ma) The assigned relative thermal indices (electrical and mechanical) and minimum thickness of
7 P6 J3 i# ^( l4 A0 B  x; vthe substitute material are equal to or greater than those of the presently specified material;
b) The substitute material differs from the presently specified material only with respect to
molecular weight, lubricant, nucleating agent, anti-static agent, colorant, or particle size.