Fibers mainly composed of sepiolite minerals are called sepiolite mineral fibers, and sepiolite is a magnesium-rich silicate fiber mineral.Sepiolite is a fibrous hydrous magnesium silicate, usually is white, light gray, light yellow and other colors, opaque and dull. Some of them are shaped like clods, and some are shaped like a strange crust or nodule. Under the electron microscope, it can be seen that they are arranged in sheets by numerous filaments. Sepiolite mineral fiber has good adsorption, decolorization, thermal stability, anti-corrosion, anti-radiation, heat insulation, anti-friction, anti-penetration and other properties, widely used in drilling, petroleum, medicine, brewing, building materials, pesticides, fertilizers , Rubber products, brakes, etc.
Sepiolite is a kind of magnesium-rich aquifer chain silicate mineral, which has two origins of leaching-hydrothermal type and sedimentary type. The former is mostly fibrous, and the latter is mostly fine-grained-flaky. Fibrous sepiolite as a friction enhancing material belongs to the former. Sepiolite has a large specific surface area and strong adsorption capacity, which enables it to have a good interface effect with the resin and filler in the friction material, and can absorb the binder well during the mixing process, showing good performance. wettability, and can be evenly mixed with fillers. In addition, the pore structure of sepiolite can gather the small molecular gas produced by the thermal decomposition of the polymer binder in the pores instead of on the friction surface, which is beneficial to reduce the thermal recession of the friction material.
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