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Polyisocyanurate PIR

product description

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.


Properties

Property

Unit

Technical Parameter

Testing Method

Density

kg/m3

≥40

ASTM D1622/ISO 845

 

 

 

Thermal Conductivity at Ambient Temperature

(180 Days Aged )

 

 

 

W/(m·K)

≤0.035 (+100℃)

 

 

 

ASTM C177

≤0.029 (+50℃)

≤0.025 (+10℃)

≤0.024 (0℃)

≤0.023(-50℃)

≤0.022(-100℃)

≤0.017 (-150℃)

≤0.016 (-170℃)

Compressive Strength (All Directions)

+23℃

kPa

≥200

ASTM D 1621

-165℃

≥280

Tensile Strength (All Directions)

+23℃

kPa

≥320

ASTM D 1623

-165℃

≥265

Flame Spread Index

/

<25

ASTM E84

Water Absorption by Vol

%

≤5

ASTM D2842

Water Vapor Permeability

ng/(Pa·s·m)

≤5.5

ASTM E96

Closed Cell Content

%

≥95

ASTM D6226

Linear Thermal Expansion Coefficient

m/(m·K)

≤70×10-6

ASTM D696

pH Value

/

5.5-7

ASTM C871

Elastic modulus

MPa

≤16

ASTM D1623

Service Temperature

-196 / +120

/

 

Product Application

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.




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