FIRE-PROTECTING EXPANDING MATERIAL Russian patent published in 1997 - IPC

FIELD: fire-resistant materials. SUBSTANCE: fire-resistant material intended to protect constructions of metal and wood and industrial rubber articles is made of glass cloth with coating of polyvinylchloride expanding composition containing polyvinylchloride, dioctyl phthalate, pentaerythritol, and diammonium phosphate in weight ratio 1:(1-1.8):(1-1.7):(1-1.7), respectively. Composition may be supplemented with adhesive: 1.5-5.0 weight parts of epoxydiane resin and 0.3-1.5 weight parts of lead silicate per 100 weight parts of polyvinylchloride. Material is mounted in the form of sheets and rolls on the surface of article to be protected. Property: temperature on back surface of sample after 15-min action of flame of soldering torch with temperature 900-1000 C at distance 80 mm is 130-145 C. EFFECT: improved fire-protection capability. 3 cl, 1 tbl