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防火涂料为何能防火呢?谜底在这里

日期:2018-10-16 人气:113
  •                                                             防火涂料为何能防火呢?谜底在这里

  • 防火涂料为何能防火呢?谜底在这里
    火警的风险不可思议,身分在一些建筑材料外面要运用防火涂料。防火涂料是一种用于可燃性基材外面,能低落被涂质料外面的可燃性,障碍火警的敏捷舒展,用以进步被涂质料耐火极限的一种特种涂料。防火涂料它除具有阻燃感化之外,借具有防水、防锈、防腐、耐热、耐磨和涂层坚固性、黏附性、着色性、易干性和肯定的光芒等机能。  
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    实在防火涂料自己具有难燃性或不燃性,使被珍爱基材不间接取氛围打仗,提早物体着火和削减熄灭的速度;它的导热系数也很低,能够提早火焰温度背被珍爱基材的通报。防火涂料受热剖析出不燃惰性气体,冲淡被珍爱物体受热剖析出的可燃性气体,使之不容易熄灭或熄灭速度减慢。如许熄灭的发生和停止必需同时具有三个前提,即可燃物资、助燃剂和火源便被割断了。
    露氮的防火涂料受热剖析出NO、NH3等基团,取有机游离基化合,中止连锁反应,低落温度。收缩型防火涂料受热收缩发泡,构成碳量泡沫隔热层关闭被珍爱的物体,提早热量取基材的通报,阻挠物体着火熄灭或果温度降低而形成的强度下落。
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    中译英:
    Fire hazard factors one can imagine, in some building materials surface to use fire retardant coating. Fire retardant coating is used with a combustible base surface, can reduce the coated material on the surface of the combustible, hinder the fire spread rapidly, in order to improve coated refractory limit of a special coating. It has a flame retardant effect, also has waterproof, anti-corrosion, rust-proof, heat-resistant, wear-resistant and tough coating, adhesion, color, easy to dry and certain luster properties.
     
    In fact, fire retardant coating itself is flame resistant or incombustible, that is to protect the substrate does not directly contact with air, delay object on fire and reduce the rate of burning; its thermal conductivity is low, can delay the flame temperature to be protecting a substrate transfer. Fire retardant coating of thermal decomposition of a non-flammable inert gas, dilute the protected object heating decomposition of combustible gas, so easy to combustion or burning velocity. Such burning generating and must have three conditions, namely the combustible material, combustion-supporting agent and fire was cut off.
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