(1) split asbestos fibers: asbestos fibers having properties almost unlimited split, the split can be divided into a fine flexible fibers may be observed parallel to each other numerous fine tubular fiber under an electron microscope, the fiber diameter of about 2 × 10 - ⁵ mm. The difficulty of asbestos fiber is related to the type and occurrence of asbestos.

(2) The mechanical strength of asbestos fibers; asbestos fibers have strong tensile strength, especially the undeformed fibers separated from the massive ore have higher tensile strength, up to 374 kg / mm ² , far exceeding The strength of the wire (213 kg / mm ² ). However, the strength of the fiber is significantly reduced after it is kinked and damaged.
(3) Asbestos heat resistance: Asbestos has certain heat resistance and does not burn. The melting point is about 1500 °C. Usually, the temperature of the structural water is the heat resistance of asbestos fibers. When heated to 400 °C ~ 500 °C. The adsorbed water in the asbestos fiber is all folded out. At this time, the mechanical strength is reduced. If it is cooled down, the strength can be restored to the original value. When the heating temperature reaches 800 °C, the asbestos strength is greatly reduced, and it cannot be recovered. Therefore, the chrysotile has a long-term heat-resistant temperature of 550 ° C and a short-time heat-resistant temperature of 700 ° C. Among various asbestos, amphibole asbestos has the strongest heat resistance, and its physical and chemical properties remain unchanged at 900 °C.
(4) Thermal conductivity of asbestos: Asbestos of loose or floc fiber has low thermal conductivity, and the thermal conductivity is only 1% of steel. The better the degree of release, the smaller the thermal conductivity. In addition, the thermal conductivity of asbestos is also related to temperature, which increases with increasing temperature.
(5) conductivity of asbestos: Asbestos is a good electrical insulating substance, its conductivity and the iron oxide content, but also on the status of these and related substances occurrence, the presence of iron will greatly reduce the electrical insulating properties of asbestos.
(6) Adsorption of asbestos: Asbestos has good properties of adsorbing other substances. The adsorption capacity depends on the surface area of ​​the material. The surface area of ​​asbestos fibers generally exceeds dozens of times of other substances. Therefore, it has strong Adsorption force.
(7) The chemical properties of asbestos, that is, acid and alkali resistance. The chemical properties of various asbestos are different. Serpentine asbestos has good alkali resistance and poor acid resistance, while amphibole asbestos has strong acid and alkali resistance and anti-corrosion properties. The acid and alkali resistance of asbestos is generally expressed by the amount of asbestos lost in acid and alkali.
Asbestos has many excellent features that can meet the needs of many special industries.

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