IEC 61249-4-2:2005 标准规定了一种多功能环氧树脂预浸料材料，该材料由玻璃纤维织物制成，具有明确的防火性能。该标准适用于制造印制电路板和其他互连结构的预浸料材料。

该标准规定了该预浸料材料的物理和化学性质，包括其厚度、重量、树脂含量、固化条件、热分解温度、玻璃化转变温度等。此外，该标准还规定了该预浸料材料的防火性能，包括其燃烧性能、烟雾密度和毒性等级。

该预浸料材料的燃烧性能符合UL 94 V-0级别，烟雾密度符合IEC 61034-2标准，毒性等级符合EN 50267-2-1标准。这些性能指标保证了该预浸料材料在使用过程中的安全性和可靠性。

此外，该标准还规定了该预浸料材料的制备和测试方法，以确保其符合标准要求。这些方法包括树脂含量测试、热分解温度测试、烟雾密度测试、毒性等级测试等。

总之，IEC 61249-4-2:2005 标准规定了一种多功能环氧树脂预浸料材料，该材料具有明确的防火性能，适用于制造印制电路板和其他互连结构的预浸料材料。该标准的实施可以保证预浸料材料的安全性和可靠性。

相关标准
- IEC 61249-2-21:2003 Materials for printed boards and other interconnecting structures - Part 2-21: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity 1,0 W/(m·K) or less
- IEC 61249-2-22:2003 Materials for printed boards and other interconnecting structures - Part 2-22: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity greater than 1,0 W/(m·K)
- IEC 61249-2-23:2003 Materials for printed boards and other interconnecting structures - Part 2-23: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity 1,0 W/(m·K) or less, flame retarded, with improved thermal decomposition
- IEC 61249-2-24:2003 Materials for printed boards and other interconnecting structures - Part 2-24: Reinforced base materials clad and unclad - Non-halogenated epoxide non-woven/woven E-glass reinforced laminate sheets of thermal conductivity greater than 1,0 W/(m·K), flame retarded, with improved thermal decomposition
- IEC 61249-4-3:2005 Materials for printed boards and other interconnecting structures - Part 4-3: Sectional specification set for prepreg materials, unclad - Non-halogenated epoxide non-woven/woven E-glass prepreg of defined flammability