防火橋架的作用是什么？

What is the function of fire resistant cable trays?

　　防火橋架是在普通橋架表面噴涂一層防火漆，以起到防火阻燃的作用！其實(shí)橋架本身并不會(huì)著火，著火的只可能是電纜，防火漆所起到的防火阻燃原理

Fireproof cable tray is sprayed with a layer of fireproof paint on the surface of ordinary cable tray to play a role in fire prevention and flame retardancy! In fact, the bridge itself does not catch fire. What catches fire can only be the cables, and the fire retardant principle played by the fireproof paint

　　防火橋架的防護(hù)厚度按 / T 10216一2000《電控配電用電纜橋架》表10要求，電鍍大于12μm，熱鍍大于65μm ,噴塑大于50μm，防火大于500μm ,可以用測(cè)厚儀測(cè)出來。

The protective thickness of the fireproof cable tray shall comply with the requirements of Table 10 of /T 10216-2000 "Cable trays for electrical control and distribution", and the electroplating shall be greater than 12 μ m. Hot plating greater than 65 μ M, spray molding greater than 50 μ m. Fire prevention greater than 500 μ M can be measured using a thickness gauge.

　　阻燃防火橋架主要參數(shù)

Main parameters of flame-retardant and fire-resistant cable tray

　　外觀：深灰色

Appearance: Dark gray

　　均勻稠狀流體，無結(jié)塊；

Uniformly viscous fluid without clumping;

　　表面干燥時(shí)間：2小時(shí)；

Surface drying time: 2 hours;

　　粘結(jié)強(qiáng)度：0.78Mpa；

Bond strength: 0.78Mpa;

　　抗震性：撓曲L/200涂層不起層、不脫落；

Seismic resistance: The deflection L/200 coating does not peel off or peel off;

　　抗彎性：撓曲L/100涂層不起層、不脫落；

Bending resistance: The coating does not peel off or peel off at a deflection of L/100;

　　耐火性：在自來水浸泡沫24小時(shí)以上，涂層無變化；

Fire resistance: the coating has no change when immersed in tap water for more than 24 hours in foam;

　　耐酸性：在3%HCL中浸泡沫24小時(shí)以上，涂層無變化；

Acid resistance: immerse foam in 3% HCL for more than 24 hours, and the coating has no change;

　　耐堿性：在3%Ca(OH)2中浸泡沫24小時(shí)以上，涂層無變化；

Alkali resistance: when immersed in foam for more than 24 hours in 3% Ca (OH) 2, the coating will not change;

　　耐鹽性：在3%NaCl中浸泡沫24小時(shí)以上，涂層無變化；

Salt resistance: after immersion in 3% NaCl with foam for more than 24 hours, the coating will not change;

　　耐凍性：15次；

Frost resistance: 15 times;

　　不同耐火極限的涂層厚度參照如下

The reference thickness for coatings with different fire resistance limits is as follows

　　防火極限h：0.5、1、1.5、2、2.5

Fire limit h: 0.5, 1, 1.5, 2, 2.5

　　涂層厚度mm：0.4-0.6、0.8-1.0、1.4-1.6、1.8-2.0、2.4-2.6

Coating thickness mm: 0.4-0.6, 0.8-1.0, 1.4-1.6, 1.8-2.0, 2.4-2.6

　　無機(jī)耐火板

Inorganic refractory board

　　耐火性能 A級(jí)

Fire resistance performance A-level

　　導(dǎo)熱系數(shù)（W/M、K）：≤0.5

Thermal conductivity coefficient (W/M, K): ≤ 0.5

　　抗拉強(qiáng)度（Mpa）：≥15

Tensile strength (Mpa): ≥ 15

　　抗壓強(qiáng)度（Mpa）：≥45

Compressive strength (Mpa): ≥ 45

　　抗彎曲強(qiáng)度（Mpa）：≥35

Bending strength (Mpa): ≥ 35

　　抗沖擊強(qiáng)度（Mpa）：≥2.0

Impact strength (Mpa): ≥ 2.0

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