Vermiculite coating of non-combustible fabrics in Russia is not common.
At the same time, in the American, Korean and other industrial markets, silica fabric and fiberglass with vermiculite coating are common.
So what are the benefits of vermiculite and why is it used?
Vermiculite is a mineral from the hydromica group that has a layered structure. The product of the secondary alteration of the dark mica biotitaiflogopita.
Vermiculite is externally a plate-like crystal of golden yellow or brown color. When heated from the plates, columns or threads of golden, brown, greenish or silver color are formed, which are divided into scales. The density of the material is small, individual flakes float on the surface of the water.
For use in coatings, flakes are milled, the resulting particles have a size of 30-120 μm.m
The chemical composition of vermiculite is (Mg + 2, Fe + 2, Fe + 3) 3 [(Al, Si) 4O10] · (OH) 2 · 4H2O. In this case, vermiculite contains various impurities, as it is a natural material. The presence of various impurities determines the overall color of vermiculite.
The main properties of vermiculite coating of technical fabrics:
Areas of industrial use of vermiculite are determined by its properties.