薄膜材料执行UL94阻燃防火测试，若材料的厚度小于0.025mm，推荐是直接做VTM级薄板垂直燃烧测试；若厚度在0.025~0.25mm之间，在VTM和V 之间做个评估，选最佳。

ul-94 v0与ul94 vtm-0表示的是两个不一样的防火等级。ul94表示防火等级。 区别： v0是适用于一般硬质塑料，vtm-0适用于塑料薄膜，以及线材。 相同点： 两者都表示：对样品进行两次10秒的燃烧测试后，火焰在30秒内熄灭。不能有燃烧物掉下。

UL 94 VTM Rating: VTM-0, VTM-1 and VTM-2 ‐ Thin Material Vertical Burning Testing This test method is used for thin specimens or materials that: are too flexible, and; may distort, shrink, or flex. This occurs during the traditional vertical testing. Failure to pass the UL 94 V test is a precondition of all VTM ratings.

UL94中的垂直燃烧试验根据样品燃烧时间，熔滴是否引燃脱脂棉等试验结果，把聚合物材料定为V-2,V-1,V-0和5-V四个级别，其中以V-2级为最低阻燃级，5-V级为最高阻燃级。 先介绍94V-0、94V-1、94V-2级试验方法: 此试验用小条试样长127mm，宽12.7mm，最大厚度12.7mm。

UL 94, the Standard for Safety of Flammability of Plastic Materials for Parts in Devices and Appliances testing, is a plastics flammability standard released by Underwriters Laboratories of the United States. [1] . The standard determines the material's tendency to either extinguish or spread the flame once the specimen has been ignited.

2009年8月14日 · SGS is a reputable global testing and certification organization, and UL94 VTM-0 is a fire testing standard for flammability of plastic materials. A VTM-0 rating indicates the material’s high resistance to burning, which is beneficial for a fireproof bag.

This method is used to determine the UL 94 VTM-0, VTM-1 and VTM-2 flammability ratings of thin materials. Failure to pass the UL 94 V test is a precondition of all VTM ratings. The test evaluates both the burning and afterglow times and dripping of the burning test specimen.

UL 94 VTM-0,VTM-1,VTM-2的垂直燃烧试验. 应用范围：薄膜材料或在V-0，V-1，V-2垂直燃烧试验中有扭曲变形的试样. 火焰高度： 20mm. 试样要求：200±5mmx50±1mm,沿长度125mm的地方做一标线，绕在直径为12.7的圆棒上，上端用双面胶粘牢，两组各10件

2024年9月25日 · UL94 V and UL94 VTM ratings differ in test setup and sample type. Both assess flammability, with V-0 being ideal, as it avoids dripping and extinguishes flames quickly.

2018年6月8日 · 可燃性ul94等级是应用最广泛的塑料材料可燃性能标准，它用来评价材料在被点燃后熄灭的能力。 根据燃烧速度、燃烧时间、抗滴能力以及滴珠是否燃烧可有多种评判方法。