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Toray MicroPly™ EM-5A

Chemical Family
Cyanate Esters

Toray Toray MicroPly™ EM-5A is a 177°C (350°F) cure expanding cyanate ester syntactic film (core splice). Its unexpanded density is approximately 50 pcf (0.80 g/cc) and exhibits an expansion ratio of up to 4x. It is available in continuous film rolls or in sheet form from thicknesses of 10–125 mils (0.25–3.18 mm). Standard widths are 61 cm (24”), but alternative widths up to 127 cm (50”) are available upon request. 177°C (350°F) Cure Cyanate Ester Syntactic Core Splice Film.

Properties

Physical Form
  • Prepreg
  • Sheets

Product families

Applications

Automotive & Transportation — Transportation
  • Aerospace & Aviation

Product Families

Composite Materials — Prepregs & Molding Compounds
  • Sheet Molding Compounds (SMC)

Other characteristics

Brand
Toray MicroPly
Functions
Molding Compound
Processing Methods

Out of Autoclave Prepreg, Prepreg Processing, Vacuum Bagging

Markets
Automotive & Transportation
Shelf LIfe
Out Life
28 days out life ≤ 21°C (70°F) and ≤ 60% RH
Frozen Storage Life
12 months at ≤-18°C (≤ 0°F)
Out life is the maximum time allowed at 21°C (70°F) or below and 60% or less RH before cure, after a single frozen storage cycle in the original unopened packaging at -18°C (0°F) or below for a period not exceeding the frozen storage life noted above.
Technology
Composite Materials
HIGHLIGHTS

Ambient work life of more than 28 days; Good handleability and drape with minimal slump; Flexible cure processing under vacuum, autoclave, or press; Co-curable with composite prepregs; Lightweight film core: 50 pcf, nom. (0.80 g/cc)

Recommended Applications
  • Space & Satellite
  • Radome
  • Aerospace structures
Composite Materials Functions
Molding Compound
Composites Processing Methods
  • Out of Autoclave Prepreg
  • Prepreg Processing
  • Vacuum Bagging

Technical data

Table 1 of 2

1 row
CharacteristicValueUnit
Dry Tg (DSC) with 177°C (350°F) standard cure 2 hrs204 (400)°C (°F)

Table 2 of 2

8 rows
CharacteristicValueUnit
Expanded Density12-18 (0.19–0.29)pcf (g/cc)
Expansion at 4x expansion10 (0.16)pcf (g/cc)
Gel time at 177°C (350°F)~ 8minute
Minimum Density at Fullexpanded—
Outgassing (CVCM)0.01%
Outgassing (TML)0.59%
Unexpanded50 (0.80)pcf (g/cc)
Volatile Contentmax. 1%

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