"Ultracor provides high quality materials for high performance applications."

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Carbon Fiber Honeycomb

Quartz Honeycomb

Kevlar Honeycomb

Fiberglass Honeycomb

Ultraflex®

Core Properties

Ultracor® was developed for exacting space requirements using a space qualified toughened, cyanate matrix resin.
Ultracor Features:

  • Low Density
  • Design Flexibility (customized to your requirements)
  • Low CTE, CME
  • High Thermal Conductivity

Average Mechanical Properties on various Ultracor configurations follows:

Note: Properties based on 0.5″ thickness core.

Some useful Thermal Properties follows:

Result of Testing
Honeycomb Sandwich Panel
0.010″ XN70/RS-3 Facesheets†; 1.00″, 2.0 pcf, 3/8-XN50 Core; 0.012″ AF-191K film adhesives

  1. CTE (Coefficient of Thermal Expansion)
  2. Apparatus: TMA (Thermal Mechanical Analysis) Type Thermal
  3. Expansion Meter (Sinku-Riko, Inc.: TM-7000, at National Aerospace Laboratory)
  4. Temperature Range: 30°C – 110°C
  5. Atmosphere: In 0.1 atm He gas
  6. Heating Rate: 3°C/min

CTE of Honeycomb Sandwich Sandwich Panel
CTE x 10-6/°C

Sample A (Reticulated) Sample B (Unreticulated)
Direction 1st Run 2nd Run 1st Run 2nd Run
T 2.91 – 4.54 4.97
L -0.01 – 0.17 0.26
W -0.09 -0.01 0.50 0.40

† [0/+45/-45/90]s

Nippon Oil Co., Ltd
Central Technical Research Laboratory