Covestro DU1002 UV Cure Up Jacketing - 10Kg.

Bufferlite DU-1002 is a soft, flexible product used for the inner layer for tight buffer applications. This material can be used to buffer fiber up to 500 microns and allows for an overcoat with a tough UV or thermoplastic outer layer.

Product Benefits

• Fast cure
• Low modulus
• Excellent strippability
• Patent-protected

Performance Characteristics Liquid Coating

• Viscosity, 25°C, mPa·s: 3,000
• Density, 23°C, kg·m-³: 1,030

Cured Coating* (Tested at <1% R.H.)

• Glass Transition Range (DMA**), °C at E’: -56
• Glass Transition Range (DMA**), °C at E’ 100 MPa: -46

Cured Coating* (Tested at 23°C, 50% R.H.)

• Secant modulus, 2.5% strain***, MPa: 2.6
• Elongation***, %: 38
• Tensile strength***, MPa: 0.8
• Degree of Cure (UV dose at 95% of Ultimate Secant Modulus, J·cm-2 ): 0.45
• Water Absorption after 24 hrs., 250 µm films, %: 1.4
• Hydrogen generation (24 hrs, 80°C in air, 75 µm films, µl·g-1): 2.0

*75 µm films cured in nitrogen at 1.0 J·cm-2 using one D lamp, unless stated otherwise. UV dose was determined with an IL-390 radiometer manufactured by International Light, Inc. **Dynamic Mechanical Analysis (see DMA graph) **TEM properties were obtained on glass after 1 to 2 hours of conditioning at 22 +/-2°C and 50% +/-5 RH.