材料 >> 聚合物材料
聚甲基丙烯酸甲酯,棒, PMMA, Acrylic, 20mm直径
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介绍 | 订货号 | 包装规格 | | Length (Round) | | 833-012-18 | 500 mm | | 126-515-44 | 1000 mm |
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参数 | Diameter[直径] | 20mm | | Length[长度] | 500 mm - 1000 mm | | Production Method[生产方法] | Cast | | Physical Properties(物理性质) | | Abbe number | 57.2 | | Density ( g cm⁻³ ) | 1.190 | | Flammability | HB | | Limiting oxygen index ( % ) | 17 - 20 | | Radiation resistance | Fair | | Refractive index | 1.490 | | Resistance to Ultra-violet | Good | | Water absorption - over 24 hours ( % ) | 0.200 | | Mechanical Properties(机械性能) | | Elongation at break ( % ) | 2.5 -4.0 | | Hardness - Rockwell | M92-100 | | Izod impact strength ( J m⁻¹ ) | 16.0 - - 32.0 | | Poisson's ratio | 0.350 - 0.400 | | Tensile modulus ( GPa ) | 2.40 - 3.30 | | Tensile strength ( MPa ) | 80.00 | | Electrical Properties(电气特性) | | Dielectric constant @1MHz | 3 | | Dielectric strength ( kV mm⁻¹ ) | 15.0 | | Dissipation factor @ 1MHz | 0.0140 | | Surface resistivity ( Ohm/sq ) | 10¹⁴ | | Volume resistivity ( Ohmcm ) | 2-14x10¹⁵ | | Thermal Properties(热性能) | | Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 70.000 - 77.000 | | Heat-deflection temperature - 0.45MPa ( C ) | 105 | | Heat-deflection temperature - 1.8MPa ( C ) | 95.0 | | Lower working temperature ( C ) | -40 | | Specific heat ( J K⁻¹ kg⁻¹ ) | 1400.0 - 1500.0 | | Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.17 - 0.19 @23℃ | | Upper working temperature ( C ) | 50 - 90 | | Chemical Resistance(耐化学性) | | Acids - concentrated | Good-Poor | | Acids - dilute | Good-Poor | | Alcohols | Good-Poor | | Alkalis | Good | | Aromatic hydrocarbons | Poor | | Greases and Oils | Good | | Halogenated Hydrocarbons | Poor | | Halogens | Poor | | Ketones | Poor |
其他参数 公差 | 直径 | ≤10mm | ±10% |
|---|
| 聚合物 | +20% / -10% | | 陶瓷 | +20% / -10% | |
| >10mm | ±5% | | 陶瓷 | +20% / -10% | | 聚合物 | +20% / -10% | |
| 长度 | <100mm | ±1mm |
|---|
| ≥100mm | +5% / -1% |
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