The New White Mastic
Flame retardant mastic is a white gray thick jelly, made of epoxy resin, organic solvent, film forming agent, plasticizers, flame retardant, and fillers. It is mainly used as vapor barrier layer for cold insulation and moistrue proof material for building roof. It has all advantages of asphat based mastic, such as better formability, wider service temperature, better cold resistance, due to its main film forming matter is organic polymer.This Fire Retardant Mastic can not melt or crack easily in hot or cold temperature, and its application totally same as asphat based mastic.
Technical Data
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Test Items
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Unit
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Technical Data
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Colour
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White Gray
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Density
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kg/m³
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1300±100
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Bonding Strength
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Mpa
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≥0.25 (20℃)
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Oxygen Index
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≥30
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Fire Resistance
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％
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Do not cause flame spreading during construct excution, flame retardant after dried, flame will self-extinguish within 1s after fire source leaves.
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Heat Durability
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No flowing or bubble, after 4 hours at 95℃, then 1 hour at 120℃(positioned at 45°);
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Freezing Resistance
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No cracks or flak after 2 hours at -60℃
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Water Absorption
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％
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≦0.5％ by weight(soak in water for 24hours at room temperature).
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Drying Time
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h
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Set to touch: 5 hours, dry through: 7days.
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