论文部分内容阅读
一、硅酸钙保温材料概论1、什么是硅酸钙顾名思义,硅酸钙保温材料的主要构成物质足硅酸钙。这里所说的硅酸钙是指在有水存在的条件下,硅质材料与石灰产生水热反应而生成的水化硅酸钙。因为硅质材料与石灰在常温下难于反应,所以,生产硅酸钙保温材料时,须用蒸压水热反应法。也就是说,水化硅酸钙是在蒸压釜中生成的。随着蒸压釜的处理条件(温度、时间)、原材料的纯度、反应性、级配、CaO/siO_2摩里比以及料水比等因素的改变,而形成的水化硅酸钙也各不相同。由人工合成的水化硅酸钙有二十多种,其结晶构造、结晶形态、密度、强度、耐热性也各不相同。一般建筑材料、保温材料、耐火覆盖
First, the introduction of calcium silicate insulation materials 1, what is calcium silicate, as the name implies, the main constituent material of calcium silicate insulation material is calcium silicate. Calcium silicate mentioned here refers to hydrous calcium silicate produced by a hydrothermal reaction between a siliceous material and lime in the presence of water. Because siliceous materials and lime are difficult to react at normal temperatures, autoclaved hydrothermal reaction methods are required to produce calcium silicate insulation. That is, calcium silicate hydrate is produced in an autoclave. With the autoclave processing conditions (temperature, time), raw material purity, reactivity, gradation, CaO/siO 2 Moli ratio and feed water ratio and other factors change, and the formation of calcium silicate hydrate is also different . There are more than twenty types of calcium silicate hydrates that are synthesized artificially, and the crystal structure, crystal morphology, density, strength, and heat resistance are also different. General building materials, insulation materials, refractory covering