Urethane ester PIR-Zhejiang Yahong Industrial Co., Ltd

Urethane ester PIR

Product Overview Key Features

Urethane ester PIR

Product Overview

Polyurethane (PUR/PIR) insulation material has low thermal conductivity and excellent insulation effect, suitable for various scenarios such as building insulation and cold chain insulation.

Key Features

Physical properties		Unit	Technical parameters
Density		kg/m³	45 ± 5
Thermal Conductivity	Aged 90 days Sample	W/(m·K)	≤0.026 (+25℃)
Thermal Conductivity	Aged 90 days Sample	W/(m·K)	≤0.025 (+20℃)
Compressive Strength	Ambient Temp	MPa	≥0.2
Combustibility	Max. Flame spread		＜25
	Combustion Rating		B1
	Oxygen Index		≥30
Water Absorption		Vol%	≤2 (by volume)
Water Vapor Permeability (50%RH)		ng/(Pa·m·s)	≤6.2
Closed Cell Ratio		%	≥90
Continuous Service Temperature		℃	Recommended: -170~+120

Rigid polyisocyanurate foam is a rigid foaming material made by the reaction of isocyanate with polyether after the action of catalyst. Its physical properties are more excellent than ordinary polyurethane foam materials, especially in the temperature use range (-183 ℃ -+150 ℃) and flame retardancy. The fire rating meets the national B1 standard, and the product quality meets GB/T25997-2010, ASTM C591 and European CINI standards.

Technical Data of Class A PIR Rigid Polyisocyanurate Foam
Execution standards: GB/T25997-2020 and ASTM C591-21