Material Comparison
Product Info
Product Name
Brand Name
Usages
Properties
Certificates
COC OKP-1 OSAKA GAS JAPAN
Polyester
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Plastic Datasheets
| Optical performance | Test Condition | Test Method | OSAKA GAS JAPAN/OKP-1 |
|---|---|---|---|
| Birefringence | OGC法 | ＜5 ×10-4 | |
| refractive index | D线 | 1.642 | |
| -12 ×10-5/℃ |
| Thermal performance | Test Condition | Test Method | OSAKA GAS JAPAN/OKP-1 |
|---|---|---|---|
| Hot deformation temperature | 1.80MPa | 115 °C | |
| Glass transition temperature | 132 °C | ||
| Linear coefficient of thermal expansion | 7.1 ×10-5/℃ |
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