The development of building insulation materials and types

by:MPS     2020-08-07
< P> 1980 years ago, the development of heat preservation material in China is very slow, one of the few insulation materials plant can only produce a small amount of expanded perlite, expanded vermiculite, ultrafine slag cotton, glass products, such as cotton, microporous calcium silicate mineral wool factory is small, less than ten thousand tons of production capacity, loose cotton, calcium silicate insulation and only three, with annual capacity of 8000 cubic meters. Product quantity, quality can meet the requirements. Energy-saving insulation materials of the main building of contrast is as follows: mineral wool products and mineral wool is a kind of high quality insulation material, has a history of more than 100 years of production and application. In 1840 the first found that the melting slag forming fiber after injection and production of mineral wool; Germany and the UK in 1880 to start producing mineral wool, other countries after use and production, in the 30 s of this century began to mass production and application; From 1960 to 1980, the world the most dramatic development of mineral wool; Later in 1980, the international on the production of mineral cotton products in the relatively stable stage, the main reason is that any other thermal insulating materials such as glass cotton, foam accelerating development, combined with the slowing down of development in the developed countries, mineral cotton products in the world in recent years the annual output of about 8 million tons, mineral wool most widely used in construction, such as the UK (85%), Germany (70%), Japan (92%), the United States accounted for more than 90%. Introduced in China in the early 80 s Beijing Sweden 16300 tons production line, the insulation to the scale, the direction of the performance is more outstanding, more complete specifications a huge step forward. Subsequently, Harbin, taiyuan, Hohhot, qiqihar, urumqi, Shanghai, Beijing, dongguan, yinchuan, xining successively from Sweden, Japan, Australia, Italy, Britain, Poland, China has to build a production line in nanjing. Production capacity of 3000 tons/year, 80, manufacturing enterprises have 180 or so, the design capacity of 550000 tons. Rock wool production technology: small factory production rock wool uniform degree of difference; Introduction of equipment cotton cloth automatically adjust the speed and thickness, the cotton, driving wheel rotation speed is fast, there is a proportional relationship, therefore, the giant rock wool density uniform, less slag ball content. Glass cotton and products after rock wool, the emergence of an adiabatic performance of light unit weight, good heat insulation material. Japan's 90 annual production of 20. 1985 annual production of 50000 tons, the United States, 192. 1984 annual output 50000 tons, France. 50000 tons. Before the 80 s in China only a few small plant of superfine glass wool, single variety, inferior quality, 80, in the middle of the generation of Shanghai, Beijing introduced nitto spinning technology and equipment, USES the method of centrifugal injection production, products are: board, blanket, shell, decorative ceilings, etc. Features: light weight, general 10 - 96 kg/m3, 20 kg/m3 here is felt, 24 - 48 kg/m3 is hard, 48 - 96 kg/m3 is hard board, including 48 kg/m3 to do the ceiling, softening point is about 500 incorrect jee, 300 incorrect jee heat preservation, the dosage is bigger, k = 0. 9. < / P> < P> calcium silicate insulation products domestic developed in the 70 s, has high compressive strength, small coefficient of thermal conductivity, construction is convenient, the characteristics of can be repeatedly used, which has been widely applied in power system. < / P>
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