执行标准: Referenced Standard : |
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JB/T 7770-1995 |
产品应用 Applications |
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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 |