FIELD: chemistry.
SUBSTANCE: invention relates to artificial mineral wool. The mineral wool contains fibre of the following composition, in wt %: SiO2 35-60, preferably 39-55, Al2O3 12-27, CaO 0-35, MgO 0-30, Na2O 0-17, K2O 0-17, Na2O+K2O 10-17, P2O5 0-5, Fe2O3 0-20, B2O3 0-8, TiO2 0-3, and at least one phosphorus compound capable of reacting with fibre at temperature below 1000°C to form a coating on the surface of the fibre and which is a molecule in which one or more phosphorus atoms are bonded to at least one carbon atom directly or indirectly through an oxygen atom. Content of the phosphorus compound in terms of phosphorus ranges from 0.0005%, specifically from 0.01 to 1%, specifically less than 0.5% of the total mass of fibre. The method of making the said mineral wool involves a fibre formation step and then a step for depositing at least one phosphorus compound onto the surface of the fibre, specifically through spraying or impregnation with a solution. The said mineral wool can be used in fireproof structures. Thermal- and or sound-insulating material contains at least one type of the said mineral wool. The invention is developed in subclaims.
EFFECT: improved mechanical properties of the fibre, thermal stability and solubility in a physiological medium.
28 cl, 2 tbl
