High flame-retardant performance glass fabric tapes
● 产品介绍 Introduction
适合作各种阻燃和耐火电缆的绕包带和隔火阻燃层。对于交联聚乙烯绝缘电缆,当选用本系列高阻燃、隔氧、隔火包带作为成缆包带,并选用本公司的矿物纸绳作为填充,将有可能实现电缆的阻燃或提高电费的阻燃等级。
This product is suitable for a variety of flame-retardant and fire-resistant cable as the wrapping tape and fire retardant layer. For cross linked polyethylene insulating cable, the application of this series with high flame-retardant oxygen insulation and fire insulation performance as the cable tape, as well as our mineral paper yarn as the filler, will make it possible to achieve a flame or improve flammability rating.
● 性能指标 Main specifications
序号 No. | 项目 Item | 指标 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 Iongitudinal | ≥450 |
5 | 氧指数 LOI | ≥55 |
● 隔火层在阻燃电缆中的作用
Role of the flame-proof tape in the flame retardant cable
1、用于包扎电缆中的绝缘线芯。使绝缘线芯的结构保持稳定。
2、确保缆芯不松散和绝缘不被划伤。
3、隔离绝缘层和外护层以及内衬层,以防它们之间相互粘结而影响电缆的机械、物理、电性能等。
4、当电缆遭到燃烧时,能够吸收大量的热量,并形成碳化层,隔绝气层、保护绝缘层免受燃烧,使火灾的损失不致于进一步扩大化。
1. To dress the cable insulated core, so that the structure of insulated core will be stable.
2. To prevent the cable core from being loose, and the insulation from being scratched.
3. To separate the insulation, sheath and inner covering, and keep them from bonding and affecting the mechanical, physical and electrical properties of the cable.
4. When the cable was burning, a lot of heat can be absorbed, and form a carbon layer to isolate the gas and protect the insulation layer from burning, so that the loss will be cut.
● 阻燃电缆对隔火层所用包带的有关要求
Requirements for flame retardant tapes in a fire-proof cable
1、隔火层包带材料应不吸湿。
2、隔火层包带所用材料应具有较高的氧指数。
3、隔火层包带应具有较好的柔软性便于绕包加工。
4、隔火层包带的工作温度应和电缆的工作温度相同。
5、隔火层包带在绕包加工过程中应对环境无污染,对人体无伤害。
6、隔火层包带应具有较好的抗张强度。
1. The tape materials should not be hygroscopic.
2. The LOI of tapes shall be relatively high.
3. The tapes shall be flexible enough to facilitate wrapping process.
4. The tapes and the cable shall have the same working temperature.
5. The tapes shall not be harmful to the environment and human in the wrapping process.
6. The tapes shall have a high tensile strength.
● 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.
● 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.