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苏联明斯克建筑材料科学研究所研制出一种使用温度达850℃的新型保温材料。新型保温材料以100号膨胀珍珠岩砂为基料,为了提高制品的强度和降低导热系数,在保温材料的组成中还加有4、5、6级石棉,粘结剂使用的是普罗夏诺夫矿场的高岭土(гост21286-76)。为了改善石棉的松解性,混合物采用湿法制备。制备工艺如下:在叶片式搅拌机中注入水,再填满石棉纤维和高岭土加以搅拌,使石
The Minsk Institute of Building Materials Science in the Soviet Union developed a new type of insulation material with a temperature of 850°C. The new insulation material is based on No. 100 expanded pearlite sand. In order to improve the strength of the products and reduce the thermal conductivity, 4, 5, and 6 grades of asbestos are added to the composition of the thermal insulation material. Kaolin in the Kaffield (гост21286-76). In order to improve the release of asbestos, the mixture is prepared using a wet process. The preparation process is as follows: water is injected into a blade-type mixer, and then filled with asbestos fibers and kaolin are stirred to make the stone