Epo-Tek® ET353ND Heat Cure Epoxy (8oz)

EPO-TEK® 353ND is a two-component, high-temperature epoxy specifically engineered for semiconductor, hybrid, fiber optic, and medical applications. While designed for continuous operation at 200°C, this heat cure epoxy can withstand temperatures ranging from 300°C to 400°C for several hours. Its excellent resistance to various solvents and chemicals makes it an ideal choice for bonding fiber optics, glass, ceramics, and most plastics.

EPOTEK 353ND is primarily recommended for thin and thick film applications. For applications requiring extra thick sections, it is advisable to gel the system at room temperature or slightly above, followed by a brief post-cure at elevated temperatures.

Features:

• Pot Life: ≤ 3 Hours, enabling low-temperature curing
• Passes NASA low outgassing standard ASTM E595 with proper cure
• Fiber optic adhesive designed to meet Telecordia 1221

Physical Properties:

• Color (before cure):
  • Part A: Clear (Gardner < 5)
  • Part B: Amber (Gardner < 18)
• Consistency: Pourable liquid
• Viscosity (23°C) @ 50 rpm: 3,000 - 5,000 cPs
• Glass Transition Temperature, Tg: ≥ 90°C (degree Celsius)
• Coefficient of Thermal Expansion (CTE):
  • Below Tg: 54 x 10^-6 in/in°C
  • Above Tg: 206 x 10^-6 in/in°C
• Shore D Hardness: 85

Optical Properties @ 23°C:

• Spectral Transmission:
  • ≥ 50% @ 550 nm
  • ≥ 95% @ 1100-1600 nm
  • ≥ 98% @ 800-1000 nm
• Refractive Index (uncured): 1.5694 @589 nm

Storage:

• Shelf Life - Bulk: One year at room temperature
• Shelf Life - Syringe: Six months at -40°C (degree Celsius)