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Flexible Hi - Flow

Product ID: HI-FLOW

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Flexible Hi-Flow is the new "phase change" material designed specifically to replace grease as a thermal interface. This is a filled polymer which is now available in a pad form for easier handling and installation. At 65C flexible Hi-Flow changes from a solid and flows thereby assuring total wet-out of the interface. The thixotropic characteristics of the material keep flexible HI-flow from flowing out of the interface. The result is a thermal interface comparable to grease, without the mess, contamination and difficult handling associated with grease.
Features
  • Hi-Flow coated aluminum
  • Available in pad form as punched parts, sheets or rolls
  • Low volatility-less than 1%
  • Easy to handle in the manufacturing environment
  • Flows but doesn't run like grease or wax under continuous heat or in vertical applications
  • Low contact thermal resistance of 0.05 C-in^2/W
  • Tack free at room temperature. Does not attract contaminants
  • Scratch resistant at room temperature. Does not require protective liner in shipment when attached to heat sink
  • Flexible Hi-Flow has thermal performance equal to grease with. 0.5 Celsius-in^2/W contact thermal resistance
  • Flexible Hi-Flow is used in applications where electrical isolation is not required
  • Typical applications for flexible HI-flow include CPUs mounted on a heat sink, power conversion modules or any other spring or clip mount application where grease is used
  • Flexible HI-flow is coated on both sides of the aluminum substrate. The product is available as a dry material or with thermal acrylic adhesive on one side to aid in positioning
  • Modified ASTM D5470 test method used. Sample run at 70 Celsius
Physical properties Typical value Test method Thermal/electrical properties Typical value Test method
Color Dark gray Visual Thermal resistance (Celsius-in^2-W^-1) (C-mm^2/watt) < 0.05 w/o AC, < 0.32 w/o AC ASTM D5470
Substrate Aluminum N/A Thermal resistance (Celsius-in^2-W^-1) (C-mm^2/watt) < 0.05 w/AC, < 0.32 w/AC N/A
Thickness of substrate 0.0015 in. 0.04mm ASTM D374 Thermal conductivity of coating w-m/K 0.9 ASTM D5470
Thickness of thermal acrylic adhesive 0.0005" (one side) 0.0127mm ASTM D374 Dielectric constant of coating (100Hz) 3.2 ASTM D150
Thickness of material 0.0055" +/- 0.001", 0.14mm ASTM D374 N/A N/A N/A
Specific gravity of coating 1.8 ASTM D792 N/A N/A N/A
Phase change temperature (Celsius) 65 N/A N/A N/A N/A
Continuous use temperature (Celsius) -30 to +130 N/A N/A N/A N/A

Main Products

cooler, trimmer, multi - fuse, thermal solution series, L.C.D driver, remote control encoder / decoder