名称：Goodfellow（顾特服）
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聚甲醛均聚物,棒, Acetal, Homopolymer POMH, White, 25mm直径
材料 >> 聚合物材料
| 品牌: | Goodfellow |
| 产地: | 英国 |
产品介绍
| 订货号 | 包装规格 |
| Length (Round) | |
| 881-467-82 | 100 mm |
| 183-479-13 | 200 mm |
| 934-896-09 | 500 mm |
| 862-000-06 | 1000 mm |
产品参数
| Colour[颜色] | White |
| Diameter[直径] | 25mm |
| Length[长度] | 100 mm - 1000 mm |
| Mechanical Properties(机械性能) | |
| Coefficient of friction | 0.20 - 0.35 |
| Elongation at break ( % ) | 40.0 -75.0 |
| Hardness - Rockwell | M94 |
| Izod impact strength ( J m⁻¹ ) | 75.0 - - 130.0 |
| Poisson's ratio | 0.350 |
| Tensile modulus ( GPa ) | 2.90 - 3.10 |
| Tensile strength ( MPa ) | 70.00 |
| Physical Properties(物理性质) | |
| Density ( g cm⁻³ ) | 1.420 |
| Flammability | HB |
| Limiting oxygen index ( % ) | 15 |
| Radiation resistance | Poor |
| Resistance to Ultra-violet | Poor |
| Water absorption - equilibrium ( % ) | 0.60 - 0.90 |
| Water absorption - over 24 hours ( % ) | 0.250 |
| Thermal Properties(热性能) | |
| Coefficient of thermal expansion ( x10⁻⁶ K⁻¹ ) | 122.000 |
| Heat-deflection temperature - 0.45MPa ( C ) | 170 |
| Heat-deflection temperature - 1.8MPa ( C ) | 135.0 |
| Specific heat ( J K⁻¹ kg⁻¹ ) | 1500.0 |
| Thermal conductivity ( W m⁻¹ K⁻¹ ) | 0.22 - 0.24 @23℃ |
| Upper working temperature ( C ) | 80 - 120 |
| Electrical Properties(电气特性) | |
| Dielectric constant @1MHz | 4 |
| Dielectric strength ( kV mm⁻¹ ) | 20.0 |
| Dissipation factor @ 1MHz | 0.0050 |
| Surface resistivity ( Ohm/sq ) | 10¹⁵ |
| Volume resistivity ( Ohmcm ) | 10¹⁵ |
| Chemical Resistance(耐化学性) | |
| Acids - concentrated | Poor |
| Acids - dilute | Poor-Fair |
| Alcohols | Good-Fair |
| Alkalis | Poor |
| Aromatic hydrocarbons | Good |
| Greases and Oils | Good |
| Halogenated Hydrocarbons | Good-Poor |
| Halogens | Poor |
| Ketones | Good-Fair |
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% |
