Fire Retardant Mastic

Fire Retardant Mastic Flame retardant mastic is thick black jelly made of asphalt or epoxy resin, added with mineral and adequate flame retardant, it could be use in normal temperature, not shrink or crack during moulding, after moulding it develops with its final set a firm, drable surface with good resistance to acids, alkalis, abrasion and weathering stablilty,  also it has air-tightness, water impermeability, cold resistance, corrosion protection, fire retardant, hard to deteriorate or crack by ages, and long-term application, this product contains no asbestos, lead mercury or mercury compounds. Dehe professionally manufacture fire retardant mastic, Foam Glass, PU foam, PIR foam, foam material, etc. Technical Data Test Items Unit Technical Data  Flame Retardant Mastic Colour   Black  Density Kg/m³  1300±100 Bonding Strength Mpa ≧0.25 (20℃) Oxygen Index   ≧30 Fire Resistance ％ Do not cause flame spreading during construct excution, flame retardant after dried, flame will self-extinguish within 1s after fire source leaves. Heat Durability   No flowing or bubble, after 4 hours at 95℃,  then 1 hour at 120℃(positioned at 45°); Freezing Resistance   No cracks or flak after 2 hours at -60℃ Water Absorption ％ ≦0.5％ by weight(soak in water for 24hours at room temperature).