Polyisocyanurate foam (PIR) is a foaming material generated after a chemical reaction between catalyzed isocyanate and polyether. Its physical fire resistance performance is better than that of general polyurethane foaming material. It has the advantages of low thermal conductivity, a wide range of service temperatures, excellent dimensional stability, and can be cut easily according to different needs. The product meets the requirement of ASTM C591 and CINI 2.7.01 standards.
PIR is an ideal insulation material for cryogenic applications. It is widely used in oil refineries, chemical plants, ethylene, fertilizers, cold storage and LNG installations due to its low thermal conductivity, lightweight, shockproof and strong adaptability.
ASTM D1622/ISO 845
Thermal Conductivity at Ambient Temperature
(180 Days Aged )
Compressive Strength （All Directions）
ASTM D 1621
Tensile Strength （All Directions）
ASTM D 1623
Flame Spread Index
Water Absorption by Vol
Water Vapor Permeability
Closed Cell Content
Linear Thermal Expansion Coefficient
-196 / +120
It is a kind of ideal organic thermal insulation materials applied at low temperature, result from its low thermal conductivity, lightweight, anti-vibration and compatibility. It is widely used as insulation in oil refinery, chemical, ethylene and fertilizer industries, as well as refrigeration house and LNG systems.
Packing and Storage
(1) Store in a dry, lightproof, shady, and ventilated place, keep away from heat source and protect from sun exposure.
(2) Inner Packing: Polythene bags Outer Packing: Cartons
Application and Cautions
(1) PIR shall be handled gently, avoid rolling, collision and heavy pressure during moving.
(2) When applied to pipe and equipment insulation, PIR shall be fastened with glass fiber tape or steel band.
(3) Cut it with saw during application.