Key Properties

DUNMORE Multi-layer Insulation Films & Tapes

DUNMORE multilayer insulation films and tapes are based on three firm foundations: polyimide (Kapton®), polyester, and Teflon® films. From those starting points, DUNMORE has engineered and manufactured over 780 functional-specific structures. DUNMORE multilayer insulation films and tapes include metallized films, corrosion resistant coated films, scrim-reinforced laminations, and pressure-sensitive tapes.

Key Properties of Aluminum-Coated Polyester, Polymide, and Fluorocarbon Films

	Polyester	Polyimide	Fluorocarbon	Test Methods
Physical Properties	@ 25°C (77°F)	@ 23°C (73°F)	@ 23°C (73°F)
Density	1.4 g/cc	1.42 g/cc	2.13-2.14 g/cm²	ASTM D 1505-68
Thickness	25 gauge (6.3 microns)	100 gauge (25 microns)	200 gauge (50 microns)	DuPont® Data
Yield	576 ft²/lb	136 ft²/lb	45 ft²/lb	ASTM D 882-88
Tensile Strength	28,000 PSI/1972 kg/cm²	24,000 PSI/1690 kg/cm²	2,500 PSI 176 kg/cm²	ASTM D 882-88 (Method A¹)
Thermal Properties
Thermal Conductivity	6.1 x 10^-3 Watts cm^-1°C^-1	6.1 x 10^-3 Watts cm^-1°C^-1	1.94 x 10^-3 Watts cm^-1°C^-1	ASTM D 696
Specific Heat	.28 (cal/gm/ °C)	.28 (cal/gm/°C)	.28 (cal/gm/°C)	DuPont® Data
Solar Absorptance	≤ 0.14	≤ 0.14	≤ 0.14	ASTM E-903/E490
Emissivity	0.035 (avg)	0.035 (avg)	0.035 (avg)	ASTM E-408 (Method A)
Service Temperature (nom.)	-250°C +150°C	-250°C + 204°C	-150°C +150°C	DuPont® Data
Outgassing	% TML < 1.0% %CVCM < 0.1%	% TML < 1.0% %CVCM < 0.1%	% TML < 1.0% %CVCM < 0.1%	ASTM E-595 ASTM E-595
Electrical Properties
Resistivity, Ohms/ ☐	< 1.0 Ω / ☐	< 1.0 Ω/ ☐	< 1.0 Ω/ ☐	DUNMORE Data
VDA Thickness Angstroms	≤ 300 Å	≤ 300 Å	≤ 300 Å	DUNMORE Data
Chemical Properties
Moisture Absorption 50% R.H. @ 25°C (77°F)	1.0% (nominal)	4.0% (max)	1.0% (nominal)	ASTM D 570-92


ISO 9001:2008 Certified VPP Star Certified Copyright © DUNMORE™ Corporation