Physical and chemical properties of asbestos
Different kinds of asbestos are different in physical, mechanical and chemical properties. Asbestos fiber length is generally 3~50 millimeters, also has longer. China has found the longest asbestos fiber, 2.18 meters, the longest in the world. Serpentine asbestos with good alkali resistance, almost no alkali corrosion, but acid resistance is poor, very weak organic acids can be asbestos in the Magnesium Oxide precipitation, so that the strength of asbestos fibers decline.Amphibole asbestos belongs to the monoclinic structure. The color is generally deep, the proportion is bigger, has the high acid resistance, the alkali resistance and the chemical stability, the corrosion resistance is also good. Especially the filter performance of blue asbestos is better, and it has the important characteristics of preventing chemical poison and purifying the air polluted by radioactive material. Distinguish between serpentine asbestos and amphibole asbestos is put into a mortar asbestos, chrysotile felt mess, fiber is not easy to separate, amphibole asbestos after grinding easily into many small fibers. Iron free asbestos is white, iron containing asbestos in different shades of blue.
A fibrous aggregate with silky luster and pale luster after splitting.Asbestos is a collection of tiny tubular fibers arranged parallel to each other and can be split into very fine asbestos fibers, in diameter up to 0.1 microns. Completely split open, loose, difficult to observe with the naked eye, and therefore is a good bacterial filter material.Asbestos with a fiber length of more than 8 mm is blended with 20 to 25% cotton yarn to make fire-resistant textile materials. Shorter fibers are used for making asbestos, bonding cloth, asbestos sheets and insulating materials. Blue cotton has unique anti chemical poisons and radioactive properties of particulate pollution in air purification, was used to produce various kinds of high efficiency filter, filtration efficiency of asbestos paper used to make up 99.9%.Vertical cracks of asbestos fibers called transverse fibers, average length of 30 cm below, in the form of chrysotile multi output, extend parallel to fracture direction of the asbestos fiber called longitudinal fibers, the length can reach 1 meters, it is longitudinal fiber cotton. Other asbestos, these two fibers all have.
