无卤低烟阻燃玻璃布包带
Halogen-free low smoke flame retardant glass fabric tapes
● 产品介绍 Introduction
适用作无卤、低烟、隔火（氧）层、阻燃电缆，即无公害（或称洁净）阻燃电缆和耐火电缆的绕包带和隔火阻燃层。
This product is suitable to be applied as the taped wrapping or fire insulating layer in halogen-free low smoke flame retardant cables or refractory cables.
● 性能指标 Main specifications
| 序号 No. | 项目 Item | 典型值 Parameter |
1 | 定量g/m2 Weight | ≥200±10% |
2 | 厚度mm Thickness | 0.18±0.02 |
3 | 宽度mm Width | 根据用户需要 |
4 | 强度（纵向）N/25mm Strength longitudinal | ≥300 |
5 | 氧指数（LOI） | ≥55 |
6 | 烟密度Dm（NF值） Smock density Dm NFvalue | ≤100 |
7 | 燃烧释出气体 | ≥4.3 |
● 高阻燃隔火层电缆的阻燃机理
Flame retardant mechanism of cables with fire retardant tapes
主要原理：
韧性高阻燃隔火层电缆主要原理是在材料中添加了金属水合物成份。韧性高阻燃隔火层所用的材料是集阻燃、吸热、隔氧于一体的带材。可分别实现低卤低烟、无卤低烟、阻燃电缆的高阻燃化，并能够有效的提高电缆的阻燃等级。
阻燃机理：
韧性高阻燃隔火层电缆的隔火层遇火层遇火分解成金属氧化物和析出结晶水，金属氧化物分解后形成网状结构，对烟气有一定的吸附作用。而析出的结晶水不但对烟粒起到明显的沉降作用，而且还具有较好的吸热效果。此外在燃烧过程中可以形成碳化结构，这种碳化层在电缆的低烟、阻燃化方面发挥了巨大的作用，吸热作用延迟电缆本身开始燃烧时的燃烧速度和急剧上升的时间，由于碳化结构的形成，从而阻碍了氧气的供给和可燃气体的流动，因此抵制了电缆的燃烧。
The main principle:
The main principle of fire retardant layers in cables is the metal hydrate. Materials of fire retardant layer are flame retardant, endo-thermal, and oxygen insulating strips. By application of these strips, low halogen low smoke cables, halogen-free low smoke cables, or flame retardant cables of the high, can effectively improve their flame-retardant rating, respectively.
Flame retardancy mechanism:
Incase of fire, fire insulating layers in the fire retardant cables are decomposed into metal oxides and crystal water precipitation. The metal oxides form a network structure which can adsorp some flue gas after decomposition. The precipitation of crystal water has great effect not only on the settlement of smoke particles, but also in heat absorbing. In addition, a carbide structure is formed in the combustion process, and this carbonization layer plays a huge role in smoke reduction and flame retardency of cables. And its heat absorption function slowdowns the combustion rate but make a sharp rise in the humidity. The carbide structure hampers the oxygen supply and combustible gas flow, so the cable is resistance to combustion.
● 贮存 Storage
本产品自出公司之日起贮存期为6个月，并应贮存在干燥而洁净和库房内。
This product is valid for 6 months since the date of manufacture, and should be stored in a dry and clean warehouse.
