Black Mastic

Black Mastic: Anhui Huichang also produces various accessories for insulation project.

Property	Unit	Technical Data
Color		Black
Ave. Density	Kg/m³	1300
Fire Resistance	It causes no spark during construction, fire resistant after drying, and extinguishes within 1s after fire source taken away
Heat Durability	There is no signs of flowing or foaming, after it is placed at the angle of 45° Cat the temperature of 95° C for 4 hours, and then for anther 1 hour at the temperature of 120° C
Freeze-thaw Resistance	No cracks or peeling off occur after suspended at -40° Cand +60° C for 2hrs respectively
Water Absorption	The water absorbed is less than0.5%(by weight)after soaking for 24hrs at room temperature
Drying Time	It Can be touched with fingers after 5hrs, while  it costs 7 days to dry completely
Volatile Substance	30± 5%
Oxygen Index	> 30(OL)
Adhesive Strength	20° C    2.5kg/m²
Prolongation Rate	3%
Service Temperature	-60~95° C

It has following features: airtight ,vapor stop , water proof , freeze resistance , corrosion  protection , and not easy to age or crack . It could be applied at normal temperature and resist  to combustion after being dried .It is a kind of ideal vapor barrier material ,to be applied together with insulation ,such as cellular glass ,PU and PIR in petrochemical industry.

Black Mastic