Covestro DP-1800 UV Cure Primary Coating (1Kg)

The Covestro^® DP-1800 is a primary fiber coating for low-loss applications and ensures fast processing, low fiber optic attenuation, and excellent micro-bending performance. This primary coating is crucial to ensure efficient and reliable data transmission.

Liquid Coating:

• Viscosity, 25°C: 5,600 mPa•s
• Density, 23°C: 1,030 kg•m^-3
• Liquid Refractive Index, 23°C: 1.48
• Surface tension, 23°C: 30 dynes•cm^-1

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

• Glass Transition Range (DMA): -55°C at E’ _{1000 MPa}
• Glass Transition Range (DMA): -43°C at E’ _{100 MPa}

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

• Segment modulus, 2.5% strain: 0.59 MPa
• Elongation: 165%
• Tensile strength: 0.53 MPa
• Degree of Cure, RTDMA - Gel Time: 0.27s
• Refractive Index: 1.48
• Hydrogen generation (24 hrs, 80°C in air, 75 μm films, μl•g-1): 1.07
• Adhesion to glass, per 25mm
  • 50% R.H. (Nx10^-2): 31
  • 95% R.H. (Nx10^-2): 17

Recommended shelf life: 12 months from the date of manufacture.