The emergence of new materials

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The emergence of new materials, to people's lives a lot of help. Calcium silicate insulation materials based on silicon oxide (quartz sand powder, diatomaceous earth, etc.), calcium oxide (slaked lime is also useful, carbide slag, etc.) and reinforcing fibers (such as asbestos, glass fibers, etc.) as the main raw material, through mixing, heating , gel, molding, autoclave curing, drying and other processes made of a new type of insulation material. Lime water digestion, after three mesh filter, into pulp barrels stored, transported to mix with mud pump porch post that anchor top and bottom barrel and diatomaceous earth, carried out together with water glass, asbestos (or other fiber) and water mixing, and then use the pump The thick glue gel after mixing barrel is heated to gel, liquid storage tanks were sent to the middle, and then were sent to the hydraulic pressure molding machine, molded wet products into the autoclave autoclave curing, and then sent to the Oven dehydration, after sampling inspection finished product storage. The entire process can be broadly divided into: lime digestion, a few steps mixing the ingredients, heating the gel, compression molding, autoclave curing and drying dehydration.

Calcium silicate products molding process is divided into casting molding and compression molding. Casted, mold is relatively simple, low production costs, but after steam-cured products must go through shaping stage, there are still structural elastic uneven, incomplete appearance of the phenomenon; pressing, the need for expensive dedicated presses and molds, but After steam-cured product appearance complete, uniform structure. species ① asbestos calcium silicate. Asbestos fibers as a reinforcing fiber obtained calcium silicate. ② non-asbestos calcium silicate. One kind of alkali resistant glass fibers instead of asbestos fibers obtained calcium silicate. Non-asbestos calcium silicate in the main performance thermal conductivity, mechanical strength and linear shrinkage, etc., than there is asbestos calcium silicate increased.

Especially to improve the mechanical strength and brittleness, help to reduce construction and installation of loss. ③ lightweight calcium silicate. Calcium silicate is used in the production process static method, and lightweight calcium silicate used in the process is a dynamic method. Just a static method of gelled gel process in a dynamic process, to be made under high pressure heated and stirred (quantity, bulk) amorphous or crystalline hydrate Asia, then the static method as compression molding, autoclave curing, drying and then into the drying room, so called lightweight molded calcium silicate, thermal conductivity, flexural strength and wood plastic composites fence other properties are better than asbestos calcium silicate, in particular, the density to light 1 / 2. Use the temperature increased from 650 ℃ to 1000 ℃. ④ high-strength calcium silicate. High strength calcium silicate is siliceous material and calcareous material synthesized by the hydration reaction to Tuobei Mo to stone as the main crystalline material with adhesive and reinforcing material to increase the strength of products, while controlling the compression ratio to achieve the density requirements, changing process conditions to control the thermal conductivity increased reducing agent to control shrinkage.