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HexPly® 954-3 is a 350ºF (177ºC) curing cyanate resin with excellent resistance to moisture absorption, outgassing and microcracking. HexPly® 954-3 is formulated for autoclave or press molding using a standard cure of two hours at 350ºF (177ºC). Glass transition temperature can be maximized by post curing at 450ºF (232ºC). The recommended lay-up procedure is HSP-L3. The recommended cure procedure is HSP-C1 or HSP-C2.

Polymer Name: Cyanate Ester Resin

Functions: Prepreg

Processing Methods: Compression Molding, Prepreg Processing

Technical Data Sheet
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Knowde Enhanced TDS

Identification & Functionality

Composite Materials Functions

Features & Benefits

Product Highlights
  • Low moisture absorption
  • Excellent resistance to microcracking
  • Low outgassing
  • Very low minimum viscosity
  • Attractive electrical properties
  • 350ºF (177ºC) cure
  • Available on broad range of fibers and in forms including tape and fabric, and tow
  • Autoclave or press mold processable

Applications & Uses

Composites Processing Methods

Properties

Physical Form
Neat Resin Properties
ValueUnitsTest Method / Conditions
Tensile Modulus0.4 (2.8)Msi (Gpa)
Tensile Ult. Strain2.4%
Flex Strength17.3 (119)ksi (Mpa)
Flex Modulus0.43 (3.0)Msi (Gpa)
Tg (DMA- δ) no post cure206°C
Tg (DMA- δ) with post cure258°C
Density1.19g/cc
CTE30.6μin/in-°F
Tensile Strength8.2 (57)ksi (Mpa)

Storage & Handling

Shelf Life and Out Life
  • Shelf Life 6 months (maximum from date of manufacture)
  • Out Life 14 days