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介绍挤塑板聚苯板的燃烧性能!
作者:admin 来源:本站 发布时间:2018-12-04 14:21:19 浏览次数:174
一、挤塑板聚苯板燃烧性能解释
I. Explanation of Combustion Performance of Extruded Polyphenylene Plate
答:燃烧性能是指建筑材料燃烧或遇火时所发生的一切物理和化学变化,这项性能由材料表面的着火性和火焰传播性、发热、发烟、炭化、失重,以及毒性生成物的产生等特性来衡量。我国国家标准GB8624-97将建筑材料的燃烧性能分为以下几种等级。
Answer: Combustion performance refers to all physical and chemical changes that occur when building materials are burned or exposed to fire. This performance is measured by the ignition and flame propagation of the material surface, heating, smoking, carbonization, weight loss, and the generation of toxic products. China's national standard GB8624-97 classifies the combustion performance of building materials into the following grades.
A级: 不燃性建筑料
Class A: Non-combustible building materials
B1级:难燃性建筑材料
Class B1: Flammable Building Materials
B2级:可燃性建筑材料

Class B2: Flammable Building Materials

济南挤塑板厂家

B3级:易燃性建筑材料
Level B3: Flammable Building Materials
二、难燃B1级挤塑聚苯板也能点着,跟可燃B2级板有什么区别?
2. Flammable B1 grade extruded polystyrene board can also be ignited. What's the difference between flammable B2 grade board and flame retardant B1 grade extruded polystyrene board?
答:首先上面已经解释过挤塑板属于可燃类材料,所以不管可燃B2级板还是难燃B1级板遇明火肯定着,这是正常的现象。但是科文挤塑板具有非常好的离火自熄的特点,这一点是比较重要的(一般不介绍)。而且难燃B1级板的离火自熄性比可燃B2级板要好一些。关于可燃B2级和难燃B1级之间的区别,根据GB 8624—1997《建筑材料燃烧性能分级方法》,难燃B1级材料除了达到可燃B2级标准外还应该满足标准中规定的烟气温度和烟密度的要求,具体见四。一般对保温材料进行简单的打火机点火试验,很难看出可燃B2级和难燃B1级之间明显的区别,但至少能看出难燃B1级板离火后比可燃B2级板火焰曼延长度短、燃烧时间短、烟气少。
Answer: First of all, it has been explained that the extruded sheet belongs to the combustible material, so it is normal that no matter the flammable B2 or B1 grade sheet is exposed to open fire. But Cowen Extrusion board has a very good characteristics of self-extinguishing, which is more important (generally not introduced). Moreover, the off-fire self-extinguishing performance of flammable grade B1 board is better than that of flammable grade B2 board. According to GB 8624-1997 "Classification Method for Combustion Performance of Building Materials", flame-retardant B1 materials should not only meet the standard of combustible B2, but also meet the requirements of smoke temperature and smoke density specified in the standard. See 4 specifically. Generally, it is difficult to see the obvious difference between flammable B2 and flammable B1 levels by simple ignition test of thermal insulation materials, but at least it can be seen that the flammable B1 level plate has shorter flame Mann extension, shorter combustion time and less smoke than the flammable B2 level plate after fire.
以上就是挤塑板聚苯板燃烧性能的介绍,济南挤塑板厂家等更多相关内容可以点击咨询:
Above is the introduction of combustion performance of extruded polystyrene board. Jinan extruded board manufacturer and other related content can be clicked to consult: .
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