执行标准: Referenced Standard : | | JB/T 7770-1995 |
产品应用 Applications | | 优异的电气性能;较高的机械强度;可靠的阻燃性、耐电弧性,该材料具有可靠的尺寸稳定性,在成型时要求压力小、时间短等特点。广泛应用于电工电气、汽车、建筑、铁路等行业。 Excellent electrical properties, high mechanical strength, reliable flame resistance, arc resistance, and reliable dimensional stability. This product can be molded at a low pressure in a short period,Widely used in electrical field,civil construction,railway, and auto field. |
项目 Properties | 单位 Unit | 指标值 Value |
型号 Grade | | SMC-1 高电气 高机械型 | SMC-2 高电气 机械型 | SMC-3 普通 机械型 | DMC-1 高电气 高机械型 | DMC-2 高电气 机械型 | DMC-3 普通 机械型 |
密度 Density | g/cm3 | 1.75-1.95 |
吸水性 Water Absorption | mg | ≤20 | ≤20 | - | ≤20 | ≤20 | - |
模塑收缩率 Molding shrinkage ratio | % | ≤0.15 | ≤0.15 | ≤0.30 | ≤0.15 | ≤0.15 | ≤0.30 |
热变形温度(A法) Heat Distortion Temp(A). | ℃ | ≥240 | ≥240 | ≥220 | ≥240 | ≥240 | ≥220 |
冲击强度(简支梁,无缺口) Impact strength (Charpy in-notched) | kJ/m2 | ≥90 | ≥60 | ≥45 | ≥30 | ≥25 | ≥20 |
弯曲强度 Flexural Strength | MPa | ≥170 | ≥150 | ≥135 | ≥90 | ≥80 | ≥70 |
绝缘电阻Insulation resistance | 常态(A) Under normal conditions | Ω | ≥1.0×1013 | ≥1.0×1013 | ≥1.0×1012 | ≥1.0×1013 | ≥1.0×1013 | ≥1.0×1012 |
浸水24小时后(D-24/23) Immerged in water for 24 hours | ≥1.0×1012 | ≥1.0×1012 | - | ≥1.0×1012 | ≥1.0×1012 | - |
电气强度(于90℃变压器油中) Dielectric Strength(in 90℃ oil) | MV/m | ≥12.0 | ≥12.0 | ≥10.0 | ≥12.0 | ≥12.0 | ≥10.0 |
介质损耗因数(1MHz) Dissipation Factor (1MHz) | - | ≤0.015 | ≤0.015 | - | ≤0.015 | ≤0.015 | - |
相对介电常数(1MHz) Permittivity(1MHz) | - | ≤4.5 | ≤4.5 | - | ≤4.8 | ≤4.8 | - |
耐电弧 Arc Resistance | S | ≥180 | ≥180 | ≥150 | ≥180 | ≥180 | ≥180 |
耐漏电起痕指数(PTI) Proof Tracking Index (PTI) | V | ≥600 | ≥600 | ≥600 | ≥600 | ≥600 | ≥600 |
燃烧性 Flammability | - | FV0 | FV0 | - | FV0 | FV0 | - |
长期耐热性温度指数 Temperature Index | - | 155 | 155 | 130 | 155 | 155 | 130 |