IEC 61249-2-12:1999标准规定了一种可燃性定义的无纺布芳纶层压板，铜覆盖。该标准适用于制造印制电路板和其他互连结构的材料。本标准规定了该材料的物理、机械、电气和热性能，以及可燃性要求。

该标准规定了该材料的厚度范围、铜覆盖厚度、表面处理、尺寸和形状等要求。此外，该标准还规定了该材料的可燃性要求，包括燃烧性能、烟雾密度和毒性气体排放等。

该标准还规定了该材料的物理、机械、电气和热性能要求。其中，物理性能包括密度、吸水率、热膨胀系数和弯曲强度等；机械性能包括拉伸强度、弯曲强度和冲击强度等；电气性能包括介电常数、介电损耗和表面电阻等；热性能包括热分解温度和热导率等。

此外，该标准还规定了该材料的试验方法和检验规则。试验方法包括燃烧性能、烟雾密度、毒性气体排放、物理性能、机械性能、电气性能和热性能等试验。检验规则包括外观检验、尺寸检验、铜覆盖厚度检验、表面处理检验、可燃性检验、物理性能检验、机械性能检验、电气性能检验和热性能检验等。

相关标准
- IEC 61249-2-1:1999 Materials for printed boards and other interconnecting structures - Part 2-1: Sectional specification set for reinforced base materials, clad and unclad - Epoxide woven E-glass laminate of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-2:1999 Materials for printed boards and other interconnecting structures - Part 2-2: Sectional specification set for reinforced base materials, clad and unclad - Epoxide non-woven E-glass laminate of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-3:1999 Materials for printed boards and other interconnecting structures - Part 2-3: Sectional specification set for reinforced base materials, clad and unclad - Modified epoxy non-woven E-glass laminate of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-4:1999 Materials for printed boards and other interconnecting structures - Part 2-4: Sectional specification set for reinforced base materials, clad and unclad - Polyimide woven E-glass laminate of defined flammability (vertical burning test), copper-clad
- IEC 61249-2-5:1999 Materials for printed boards and other interconnecting structures - Part 2-5: Sectional specification set for reinforced base materials, clad and unclad - Polyimide non-woven aramid laminate of defined flammability (vertical burning test), copper-clad