Tourmaline is a borosilicate mineral with the general chemical formula NaR3Al6[Si6O18][BO3]3(OH, F)4, and its English name is TOURMALINE. It is a mineral characterized by containing boron. Ring-structured silicate minerals of aluminum, iron, sodium, magnesium, and lithium. Mohs hardness 7-7.5, specific gravity 2.98-3.20. Chemical composition of tourmaline SiO2 TiO2 CaOK2O LiO Al2O3 B2O3 MgO Na2O Fe2O3 FeO MnO P2O5.
Tourmaline is a silicate mineral with a natural ring structure. It is produced in Brazil, Xinjiang, China and other places. It has existed on the earth for hundreds of millions of years and is extremely rich in minerals.
Uses of tourmaline:
Due to its unique physical and chemical properties such as piezoelectricity and pyroelectricity, tourmaline has electromagnetic radiation in the far-infrared band, producing negative oxygen ions and Antibacterial and deodorizing functions. Therefore, in recent years, the term has been widely used in the fields of functional fibers, textiles, clothing, coating materials, drinking water purification, building materials, daily necessities, and composite materials.
Changes in temperature and pressure can cause the potential difference of tourmaline crystals, causing ionization of the surrounding air, that is, the production of negative oxygen ions in the air, thereby achieving the purpose of purifying the air. Add tourmaline powder to the polyester melt, It can make polyester fiber have far-infrared warmth retention function, deodorization function, negative ion emission function and antibacterial function, and is called "exotic fiber".