标题: 术语legacy material是指什么？ [打印本页] 作者: 小李子子 时间: 2012-1-27 16:00 标题: 术语legacy material是指什么？ 在UL1993 Cl 5.3.7中提到：
Enclosures of phenolic, urea, or other thermoset materials are acceptable as legacy materials. Thermoplastic materials shall comply with this table. First, the flammability classification is determined, and then CTI, HWI, and HAI requirements are determined as a function of the flammability classification.