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OKP Osaka Gas Chemicals OKP4HT Optical Plastic, 1.632 Refractive Index – 25 kg bag
OKP4HT-25KG
Osaka Gas Chemicals OKP4HT Optical Plastic, 25 Kg container with a 1.63 index of refraction.
Osaka Gas Chemicals OKP Optical Plastics are high-purity, optically clear thermoplastics specifically designed for injection molding of high-performance optical components, such as phone and camera lenses and display backlights. OKP materials offer a high refractive index and light transmittance comparable to optical-grade polycarbonate. They also provide high heat resistance to withstand lead-free soldering processes and demonstrate excellent optical and thermal stability.
Benefits:
Benefits:
- High Refractive Index
- Enables injection-molded parts with minimal stress-induced distortion
- Offers a higher refractive index and lower birefringence than polycarbonate
- Rugged material designed for long-term service life
- Low Abbe Number allows for improved correction of chromatic aberration
- Ensures performance stability across various operating conditions
- Refractive Index: 1.632
- Abbe Number: 23.1
- Visible Light Transmittance (%-T at 1mm): 90
- Birefringence (OGC Method, nm ×10⁻⁴): 55
- Melt Flow Rate (MFR, 230°C/2.16kg): 2
- Glass Transition Temperature (Tg): 142°C (287.6°F)
- Heat Deflection Temperature (HDT, 1.80 MPa): 133°C (with annealing)
- Water Absorption (24 hours): 0.11%
- Tensile Strength: 79 MPa
- Coefficient of Thermal Expansion (CTE): 6.3 × 10⁻⁵/°C
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