Various properties of brucite

Brucite is white and grayish white, green, yellow or maroon when mixed with Fe and Mn; Fresh surface and fracture glass luster, cleavage surface pearl luster, fibrous brucite silk luster; Transparent. Cleavage {0001} is very complete. Hardness 2.5. The thin pieces are flexible and flexible. The relative density is 2.3 ~ 2.6. Thermoelectric. The whiteness of massive brucite can reach 95%.


Under polarizer: the abnormal interference color is reddish brown instead of normal primary yellow or orange.


Mechanical properties: the tensile strength of brucite is 902mpa, which is a medium strength fiber material.


Electromagnetic properties: the mass resistivity of wollastonite is 8.82? 106Ω × G / cm2, volume resistivity of 5.9? 106Ω × Cm, the surface resistivity is 3.6 ~ 4.5? 106 Ω, the resistivity is anisotropic; The resistivity increases when heated.


Thermal properties: the reliable service temperature of brucite is 400 ℃. The thermal conductivity of wollastonite is 0.46w/m ? K and that of loose fiber is 0.131 ~ 0.213w/m ? K (bulk density 0.47 g / cm3).


Chemical properties: wollastonite is the best alkali resistant natural inorganic fiber.


Surface properties: the diameter of brucite fiber measured by transmission electron microscope is 0.54 ~ 0.86 μ m. The smallest is 0.086 μ m。