A flexible Class O polyurethane foam which offers excellent sound absorption coupled with exceptional fire retardant properties.
PYROSORB is specified in many acoustic and thermal insulation applications owing to its superior fire performance. The material achieves Class 0 to the Building Regulations Document B Appendix A Paragraph 12b thus being suitable for many building, heating and ventilation marine applications, and other areas where fire performance is an issue.
PROPERTIES
COLOUR : Black
DENSITY (Kg/m3) : 80 – 105
(BS 443 PI M2)
HARDNESS (N) : 180
TENSILE STRENGTH : > 70
(KPa) (BS4443 PI H3A)
COMPRESSION SET : < 25%
(BS 443 PI H6 75.1)
WORKING TEMP : -40 to +120°C
RANGE (°C)
FIRE TEST PERFORMANCE
FMVSS302 : Self extinguishable / no burn rate
BS 4735 : Char length 4 – 5mm
ASTM 1692: 1974 : Resists Ignition
BS 476 Pt 6 : Pass
BS 476 Pt 7 : Class 1
BUILDING : Class “O”
REGULATIONS
(Document B paragraph A12b)
UL94 : Pass rating 94 HF1
OXYGEN INDEX : > 40%
(BS 2782)
CAA8/FAA : Passes to all grades
SMOKE MAX : To BS 5111 55%
OBSTRUCTION
THERMAL : 0.050 to 0.065 W/mK
