POLYURETHANE FOAM
Polyurethane Hard Foamed Plastics is an ideal kind of organic low temperature heat insulation material. Its thermal conductivity is very little, with light weight and shockproof. It can be made into prefabrications and also can be made cast-in-place. It can be used in oil refining, chemical industry, chemical fertilizer, cold storage, etc.
Properties			Physical Index
Item		Unit	Type II
Density		kg/m³	35
Maximum use temperature		℃	-190~180
Thermal conductivity		W/mK	0.02
Water absorption 24h		(V/V)%	≤4
Thermal resistance of 1.0-in. (25-mm) thickness, min, at mean temperature:
4℃		k.m²/W	1.1
24℃			1
43℃			0.9
Dimensional stability
70±2, 97±3%, relative humidity		% linear change,max	4
-40±3, ambient relative humidity			1
100±2, ambient relative humidity			2
Water absorption, max		ng/Pa s m	4.30
Closed cell content, min		%	90.00
Water absorption, max		%	3
Standard size and packaging
Class	Items	Sizes
Board (Slab)	Length (mm)	1000~300
	Width (mm)	1000~300
	Thickness (mm)	≤180
Pipe cover	Length (mm)	1000~500
	Inside diameter (mm)	16~3560
	Thickness (mm)	≤180
Standard packaging	Polythene bags or Cardboard cartons