Ceramifiable sizing composition for continuous inorganic yarns, yarns coated with this composition and process for sizing and heat treatment making use of this composition

摘要

A ceramifiable sizing composition includes, in % by weight: a) 5.5 to 20% of at least one water-soluble metal salt chosen from chromium, zirconium, titanium and aluminum salts; b) 0.2 to 15% of at least one binding agent; c) 0.15 to 3% of at least one silane giving the continuous inorganic yarn good properties of resistance to abrasion and of tensile strength of dry yarn; d) 0.6 to 17% of at least one lubricating agent; and e) a balance of water.