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Toray EX-1515

Toray EX-1515 cyanate ester prepreg resin system is unique in the industry in that it is able to achieve an extremely high level of cure conversion after a 121°C (250°F) cure. This level of conversion provides optimal mechanical properties, high radiation resistance, low moisture absorption, and low outgassing while retaining unparalleled toughness, a low 118°C (244°F), stress-free temperature, and long out time. The resin system excels in its ability to resist microcracking, even when subjected to thermal cycling and high levels of radiation exposure. EX-1515 also displays low dielectric and low loss values which makes it outstanding for radome and antenna Applicationss. EX-1515 can be post cured, freestanding, to increase thermal performance for temperature-critical structures. 107–121°C (225–250°F) Cure Toughened Cyanate Ester

Properties

Physical Form
Prepreg

Product families

Applications

Automotive & Transportation — Transportation
  • Aerospace & Aviation

Product Families

Composite Materials — Prepregs & Molding Compounds
  • Thermoset Prepregs

Other characteristics

Functions
Prepreg
Polymer Name
Cyanate Ester Resin
Processing Methods
Prepreg Processing
Markets
Automotive & Transportation
Technology
Composite Materials
Material Features
  • Good Mechanical Properties
  • Low Water Absorption

Technical data

Table 1 of 2

4 rows
CharacteristicValueUnit
Coefficient of Thermal Expansion (CTE)61 (34)ppm/°C (ppm/°F)
Tg (by DMA) cured at 121°C (250°F)121 (249)°C (°F)
Tg (by DMA) post cured at 177°C (350°F)174 (345)°C (°F)
Thermal Conductivity0.169W/m.K

Table 2 of 2

6 rows
CharacteristicValueUnit
Density1.156g/cc
Dielectric Constant at 10 GHz2.8—
Loss Tangent at 10 GHz0.004—
Moisture Absorption P75 laminate saturation at 27°C0.04%
Outgassing (CVCM)0.01%
Outgassing (TML)0.18%

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