搜索一级毛片-搜一级毛片-她也啪在线视频精品网站-台湾午夜剧场-台湾一级毛片免费播放-台湾一级毛片武则天

Comparison of aerogel refractory busbar and ordinary refractory busbar

1、The traditional refractory bus, refractory 180 minutes, need to use three layers of steel shell: a layer of mica plate, a layer of mica tape, a layer of aluminum silicate felt. This structural form is large, the production process is complex, and for modern buildings with expensive land, there is not enough space to install. The aerogel refractory bus has the advantages of simple structure, superior fire resistance, small size, little installation space and obvious advantages.

2、The volcanic rock refractory formula material for refractory casting bus has good fireproof and waterproof performance, but the material selection has a greater impact on the cost, and the price is nearly 20% more expensive than the steel refractory busbar. In addition, now environmental protection requirements are getting higher and higher, resin bus fire will emit toxic and harmful gases, and the main components of aerogel are silica and glass fiber, both materials are non-toxic and harmless.