ITW Insulation TRYMER® 250L Polyisocyanurate Foam

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ITW Insulation TRYMER® 250L Polyisocyanurate Foam
Categories:	Other Engineering Material; Composite Core Material; Polymer; Thermoset; Polyurethane, TS; Thermoset Polyurethane Foam, Unreinforced
Material Notes:	TRYMER® 250L rigid polyisocyanurate insulation is a cellular polymer supplied in bunstock form. It is ideal for applications where a mid density, intermediate compressive strength core material is needed. This product is easily fabricated into sheets and is less brittle for improved handling over conventional polyisocyanurate foams. Applications: TRYMER® 250L Rigid Foam Insulation is used extensively in composite foam panel applications. It has a low index compared to conventional polyisocyanurate foams. This feature offers improved shear, tensile and flexural strengths, as well as allowing better adhesion to facers when using standard adhesives. The foam is also compatible with most thermoset resin adhesives, including vinyl esters and epoxies. ITW can provide general guidelines and recommendations for TRYMER® 250L foam. Some typical applications include: Core material for insulated architectural and structural panels Core material for factory built panelized construction systems Insulation for shipping containers, trucks or railcars Core material for boats and yacht hulls Core material for military shelter applications Information provided by ITW Insulation Systems
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Physical Properties	Metric	English	Comments

Density	0.0400 g/cc	0.00145 lb/in³	ASTM D1622
Water Absorption	<= 0.70 % @Time 86400 sec	<= 0.70 % @Time 24.0 hour	immersion; ASTM C272

Mechanical Properties	Metric	English	Comments
Tensile Strength	0.379 MPa	55.0 psi	3D; ASTM D1623
Tensile Modulus	0.00724 GPa	1.05 ksi	parallel to rise; ASTM D1623
Flexural Strength	0.379 MPa	55.0 psi	parallel to rise; ASTM C203
Flexural Modulus	0.00607 GPa	0.880 ksi	parallel to rise; ASTM C203
Compressive Strength	0.276 MPa	40.0 psi	parallel to rise; ASTM D1621
Compressive Modulus	0.00689 GPa	1.00 ksi	parallel to rise; ASTM D1621
Shear Modulus	2.34 GPa	340 ksi	parallel to rise; ASTM C273
Shear Strength	0.207 MPa	30.0 psi	average of parallel to rise and extruded directions; ASTM C273

Thermal Properties	Metric	English	Comments
Thermal Conductivity	0.0270 W/m-K	0.187 BTU-in/hr-ft²-°F	ASTM C518
Maximum Service Temperature, Air	149 °C	300 °F
Minimum Service Temperature, Air	-183 °C	-297 °F
Flame Spread Index	25 @Thickness <=102 mm	25 @Thickness <=4.00 in	ASTM E84

Descriptive Properties
Closed Cell Content	95%		ASTM D2845
Dimensional Stability	+1.2% Change		at 70°C, 7 days, 97% RH, ASTM D2126
	-0.2% Change		at -34°C, 7 days, ASTM D2126
R-Value	0.93 (m²-°C)/W		aged 180 days, ASTM C578
Surface Burning Characteristics	130		Smoke Developed, <4", ASTM E84

Some of the values displayed above may have been converted from their original units and/or rounded in order to display the information in a consistent format. Users requiring more precise data for scientific or engineering calculations can click on the property value to see the original value as well as raw conversions to equivalent units. We advise that you only use the original value or one of its raw conversions in your calculations to minimize rounding error. We also ask that you refer to MatWeb's terms of use regarding this information. Click here to view all the property values for this datasheet as they were originally entered into MatWeb.

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