类别：聚合物；热塑性塑料；丙烯酸（有机玻璃）；丙烯酸
材料说明：有机玻璃®7H和玻璃®8h是基于聚甲基丙烯酸甲酯模塑料（PMMA）。这些标准的有机玻璃®成型化合物的特殊性质：高熔体强度。机械强度高，表面硬度和耐磨性，优良的耐候性，晶体的透明着色性自由。
有机玻璃®7h的特殊性质：非常好的机械性能高温变形温度高熔体强度
用途：用于挤出光学和技术型材及板材。
物性表：| Physical Properties | Metric | English | Comments | ||
|---|---|---|---|---|---|
| Density | 1.19 g/cc | 0.0430 lb/in³ | ISO 1183 | ||
| Melt Flow | 1.67 g/10 min @Load 3.80 kg, Temperature 230 °C |
1.67 g/10 min @Load 8.38 lb, Temperature 446 °F |
ISO 1133 | ||
| Mechanical Properties | Metric | English | Comments | ||
| Tensile Strength at Break | 76.0 MPa | 11000 psi | 5 mm/min; ISO 527 | ||
| Elongation at Break | 5.5 % | 5.5 % | 5 mm/min; ISO 527 | ||
| Tensile Modulus | 3.20 GPa | 464 ksi | 1 mm/min; ISO 527 | ||
| Charpy Impact Unnotched | 2.00 J/cm² @Temperature 23.0 °C |
9.52 ft-lb/in² @Temperature 73.4 °F |
ISO 179 | ||
| Thermal Properties | Metric | English | Comments | ||
| CTE, linear | 80.0 µm/m-°C @Temperature 0.000 - 50.0 °C |
44.4 µin/in-°F @Temperature 32.0 - 122 °F |
ASTM E831 | ||
| Deflection Temperature at 0.46 MPa (66 psi) | 100 °C | 212 °F | ISO 75 | ||
| Deflection Temperature at 1.8 MPa (264 psi) | 95.0 °C | 203 °F | ISO 75 | ||
| Vicat Softening Point | 103 °C | 217 °F | B50; ISO 306 | ||
| Glass Transition Temp, Tg | 112 °C | 234 °F | IEC 10006 | ||
| Flammability, UL94 | HB @Thickness 1.60 mm |
HB @Thickness 0.0630 in |
IEC 707 | ||
| Optical Properties | Metric | English | Comments | ||
| Refractive Index | 1.49 | 1.49 | ISO 489 | ||
| Haze | <= 0.50 % | <= 0.50 % | ASTM D1003 | ||
| Transmission, Visible | 92 % | 92 % | Transmission Factor; DIN 5036 | ||
| Processing Properties | Metric | English | Comments | ||
| Processing Temperature | 220 - 260 °C | 428 - 500 °F | Barrel Temperature | ||
| Die Temperature | 220 - 260 °C | 428 - 500 °F | |||
| Melt Temperature | 220 - 260 °C | 428 - 500 °F | |||
| Drying Temperature | <= 93.0 °C | <= 199 °F | Predrying | ||
| Dry Time | 2 - 3 hour | 2 - 3 hour | Desiccant-type drier | ||
| De |
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| Fire Rating | B2 | DIN 4102 |
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