山东防火电缆桥架为啥能防火？核心秘诀在这两点

　　Why can Shandong fireproof cable tray prevent fire? The core secret lies in these two points

　　在建筑电气工程中，防火桥架是保障火灾场景下电缆、延缓火势蔓延的关键设备。它之所以能在火灾中发挥防火作用，并非单一设计使然，而是源于核心基材与专用防火涂层的双重防护，这也是其区别于普通桥架的核心优势。下面就为大家详细拆解防火桥架的防火原理，揭秘其“阻燃护缆”的核心秘诀。

　　In building electrical engineering, fire-resistant cable trays are key equipment to ensure cable safety and delay the spread of fire in fire scenarios. The reason why it can play a fire prevention role in a fire is not due to a single design, but rather to the dual protection of the core substrate and specialized fireproof coating, which is also its core advantage compared to ordinary cable trays. Below is a detailed breakdown of the fire prevention principle of fire-resistant cable trays, revealing the core secret of their "flame retardant cable protection".

　　防火桥架的防火能力，植根于其选材的本质——由具备天然防火属性的核心基材构成。它并非采用普通钢制板材，而是以玻璃纤维增强材料和无机黏合剂复合的防火板为主要基材，这类原材料本身就具备极强的防火功能。玻璃纤维是典型的耐高温、不燃材料，即便在高温环境下也不会燃烧或释放有毒气体；无机黏合剂则摒弃了传统有机黏合剂的易燃特性，进一步强化了基材的阻燃性能。这种复合基材的结构设计，不仅让桥架本身不具备燃烧条件，还能有效阻隔热量传递，从根源上切断“桥架引燃电缆”的路径，为电缆提供基础防火保障。

　　The fire resistance of fire-resistant cable trays is first rooted in the essence of their material selection - composed of core substrates with natural fire resistance properties. It is not made of ordinary steel plates, but mainly based on fire-resistant boards composed of glass fiber reinforced materials and inorganic adhesives. These raw materials themselves have extremely strong fire-resistant functions. Fiberglass is a typical high-temperature resistant and non combustible material that does not burn or release toxic gases even in high-temperature environments; Inorganic adhesives abandon the flammable properties of traditional organic adhesives and further enhance the flame retardant performance of the substrate. The structural design of this composite substrate not only eliminates the combustion conditions of the cable tray itself, but also effectively blocks heat transfer, cutting off the path of "cable tray igniting the cable" from the root and providing basic fire protection for the cable.

　　如果说核心基材是防火桥架的“防火底子”，那么外层喷涂的专用防火涂料就是“关键防护膜”，让防火效果更上一层楼。这层涂料并非普通装饰涂层，而是针对防火需求研发的功能性材料，具备遇火不燃、隔热隔烟的核心特性。当火灾发生时，防火涂料会迅速形成一层致密的防护层，既阻止外部火焰直接灼烧桥架基材，又能阻挡高温向桥架内部渗透。更重要的是，这层涂层能有效阻隔烟雾进入桥架内部，避免电缆绝缘层在高温和烟雾侵蚀下快速失效，为消防救援、人员疏散争取宝贵时间。这种“基材不燃+涂层阻隔”的双重设计，让防火桥架在火灾中能保持结构稳定，持续保护内部电缆。

　　If the core substrate is the "fireproof base" of the fireproof bridge, then the special fireproof coating sprayed on the outer layer is the "key protective film", which further enhances the fireproof effect. This layer of coating is not an ordinary decorative coating, but a functional material developed for fire prevention needs, with the core characteristics of non flammability in the event of fire and thermal and smoke insulation. When a fire occurs, fireproof coating will quickly form a dense protective layer, which not only prevents external flames from directly burning the bridge substrate, but also blocks high temperatures from penetrating into the interior of the bridge. More importantly, this coating can effectively block smoke from entering the interior of the cable tray, avoiding the rapid failure of the cable insulation layer under high temperature and smoke erosion, and buying valuable time for fire rescue and personnel evacuation. This dual design of "non combustible substrate+coating barrier" allows the fireproof bridge to maintain structural stability and continuously protect internal cables in the event of a fire.

　　正是这种双重防护设计，使得防火桥架在火灾场景下能发挥关键作用：即便周围环境处于高温火焰中，桥架内部的温度也不会快速升高，从而避免电缆因高温熔化、短路引发二次灾害，同时也能减少电缆的重大损坏，为火灾后的电路修复降低难度。也正因如此，防火桥架成为、医院、写字楼、地铁等人员密集的公共场所，以及化工园区、高层建筑等对防火要求严苛的场景的优先选择——这些场景一旦发生火灾，电缆的持续稳定运行不仅关系到逃生通道的照明、消防设备的供电，更直接影响人员生命。

　　It is precisely this dual protection design that enables fire-resistant cable trays to play a critical role in fire scenarios: even if the surrounding environment is in a high-temperature flame, the temperature inside the cable tray will not rise rapidly, thereby avoiding secondary disasters caused by cable melting and short circuits due to high temperatures. At the same time, it can also reduce major damage to cables and reduce the difficulty of circuit repair after a fire. Therefore, fire-resistant cable trays have become the preferred choice for crowded public places such as shopping malls, hospitals, office buildings, subways, as well as scenes with strict fire prevention requirements such as chemical parks and high-rise buildings. Once a fire occurs in these scenes, the continuous and stable operation of cables not only affects the lighting of escape routes and the power supply of fire-fighting equipment, but also directly affects the safety of personnel's lives.

　　选型与使用实用建议

　　Practical suggestions for selection and use

　　选择防火桥架时，需核查核心基材与防火涂层的质量：确认基材是否为玻璃纤维增强材料与无机黏合剂的复合防火板，防火涂层是否具备相关防火检测报告，避免购买“仅表面刷普通涂料”的伪防火桥架。施工过程中，需注意保护防火涂层，避免安装时刮擦、破损，影响防火效果；桥架连接部位需采用配套的防火连接件，确保整体防火性能无断点。同时，防火桥架需配合建筑整体防火设计，与穿墙、穿楼板的洞口防火封堵材料协同使用，形成完整的防火隔离体系，避免因局部防护缺失导致防火失效。

　　When choosing a fire-resistant bridge, it is important to check the quality of the core substrate and fire-resistant coating: confirm whether the substrate is a composite fire-resistant board made of glass fiber reinforced material and inorganic adhesive, whether the fire-resistant coating has relevant fire-resistant testing reports, and avoid purchasing fake fire-resistant bridges that are only coated with ordinary paint on the surface. During the construction process, attention should be paid to protecting the fireproof coating to avoid scratching and damage during installation, which may affect the fireproof effect; The connection parts of the bridge frame need to use matching fireproof connectors to ensure that the overall fire resistance performance has no breakpoints. At the same time, fire-resistant cable trays need to be coordinated with the overall fire protection design of the building, and used in conjunction with fire-resistant sealing materials for openings through walls and floors to form a complete fire isolation system, avoiding fire failure caused by local protection deficiencies.

　　防火桥架的防火能力，本质是“选材达标+涂层加持”的双重结果。它通过从内到外的全维度防火设计，在火灾中既不自身燃烧，又能阻隔热量与烟雾，为电缆撑起“防护伞”。在对防火要求严苛的建筑场景中，选择合格的防火桥架并规范安装，是保障电气工程防火的关键举措。若需了解不同场景下的防火桥架选型标准或检测方法，可咨询消防工程技术团队获取支持。

　　The fire resistance of fire-resistant cable trays is essentially the dual result of "selecting materials that meet standards+coating reinforcement". It adopts a comprehensive fire protection design from the inside out, which not only prevents self combustion in a fire, but also blocks heat and smoke, providing a "safety umbrella" for cables. In building scenarios with strict fire safety requirements, selecting qualified fire-resistant cable trays and installing them in a standardized manner is a key measure to ensure the fire safety of electrical engineering. If you need to understand the selection criteria or testing methods for fire-resistant cable trays in different scenarios, you can consult a professional fire engineering technical team for support.

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