查看塑胶材料认证 QMFZ2 Guide info
" v8 U. A1 w g+ v7 |& X% oThermal Endurance
+ p; H/ ?& P! S" dThe temperature below which a class of critical property will not be unacceptably compromised through chemical thermal degradation, over the reasonable life of an electrical product (relative to a reference material having a confirmed, acceptable corresponding performance) is defined as the Relative Thermal Index (RTI). More than one RTI may be appropriate for a given material depending on the property requirements for a given application. In certain cases, higher temperatures are permitted if so specified by the end-use product standard. ) o( X5 t7 K: Q% K/ v& W
( r3 s9 p/ e' X& E% Q- A5 oRTI Elec — Electrical RTI, associated with critical insulating properties." I3 L) T% b: ^# q4 P, n
RTI Mech Imp — Mechanical Impact RTI, associated with critical impact resistance, toughness, elongation and flexibility properties.( i- }6 A. w' T$ o7 `+ S9 z' L
RTI Mech Str — Mechanical Strength (Mechanical without Impact) RTI, associated with critical mechanical strength and structural integrity where impact resistance, resilience and flexibility may not be essential.
+ W M' M5 u7 @, [# |" S; R8 P6 L# J* \3 Z! H% b
linke: http://database.ul.com/cgi-bin/X ... 7222&sequence=1 |