F3248环氧玻璃布层压板的颜色为淡青色或浅褐色。
层压板表面平整、无气泡、麻坑和皱纹，允许有不影响使用的其他缺陷，如:擦伤、压痕、污点，及少量斑点。边缘应切割整齐，端面不得有分层和裂纹。
2、2环氧玻璃布层压板主要性能指标Main property indication
序 号 No. | 项 目 Item | 单 位 Unit | 试验方法 Testing Method | 指 标 Indication |
物 理 性 能 Physical Properties | ||||
1 | 密度Density | g/cm | GB/T5130 | ≥1.8 |
2 | 玻璃纤维含量 Glass Fibre Content | % | -- | ≥60 |
3 | 吸水性(10mm) Water Obsorption | mg | GB/T5130 | ≤34 |
4 | 热膨胀系数 Thermal Expansion Coefficient | 1/℃ | GB/T1036 | 11.1×10 |
5 | 导热系数 Coefficient of Heat Conductivity | w/m.k | -- | 0.46 |
机 械 性 能 Mechanical Properties | |||||
6 | 垂直层向 弯曲强度 Flexural Strengthat perpendicular to lamination | 常态(23+2)℃ Under normal | MPa | GB/T5130 | ≥410 |
热态(150+5)℃ At heat | MPa | ≥240 | |||
7 | 弯曲弹性模量 Modulus of Elasticity in Flexure | MPa | ≥24900 | ||
8 | 压缩强度 Compressive strength | 垂直层向 At perdicular lamination | MPa | ≥350 | |
平行层向 At parallel to lamination | MPa | ≥200 | |||
9 | 拉伸强度Tensile strength | 纵向Lengthwise | MPa | ≥314 | |
横向Crosswise | ≥300 | ||||
10 | 冲击强度 (简支梁) Impact strength charp | (无缺口) No notch | 纵向Lengthwise | kJ/ m | ≥160 |
横向Crosswise | ≥120 | ||||
(缺口) Notched | 纵向Lengthwise | ≥40 | |||
横向Crosswise | |||||
11 | 粘合强度 Bonding strength | N | Q/JBQP51 | ≥7660 | |
12 | 平行层向剪切强度 Shear strength at parallel to lamination | MPa | GB/T5130 | ≥30 | |
13 | 洛氏硬度 Rochwell strength | HRM | GB/T9342 | ≥115 |
电 气 性 能 Dielectric Properties | ||||
绝缘电阻 Insulation Resistance | 常态下 Under normal | MΩ | GB/T5130 | ≥1.0×10 |
浸水(24+1)h后 After Immersion for24+1h | ≥5.0×10 | |||
电气强度 (于90℃+2℃变压器油中1min) Dielectric strength in transformer oil at 90℃ for 1 min | kv/mm | ≥14.2 | ||
平行层向耐电压 (于90℃+2℃变压器油中1min) Proof voltage in transformer oil at 90℃ for 1 min | KV | ≥45 | ||
介质损耗因数(于浸水后，1MHz时) Dielectric loss factor after immersion at 1MHz | ≤0.04 | |||
介质常数(于浸水后，1MHz时) Dielectric loss Constant after immersion at 1MHz | ≤5.5 | |||
表面电阻率 Surface Resistivity | 常态Under normal | MΩ | GB/T1410 | ≥1.0×10 |
浸水(23+2℃/24h) After Immersion of 23+2℃ for 24th | ≥1.0×10 | |||
体积电阻率 Volume Resistivity | 常态 Under normal | MΩ.m | ≥1.0×10 | |
浸水(23+2℃/24h) After Immersion of 23+2℃ for 24th | ≥1.0×10 | |||
相比电痕化指数 Comparative Trackling Index | GB/T4207 | ≥200 |
耐 热 性 能 Thermal Properties | |||
玻璃化转变温度Tg Glass Transition Temperature | ℃ | IEC61006 | ≥172 |
热压收缩率 Reduction rate of Heat press | % | 参考ASTMD621 | ≤0.40 |
温度指数 Thermal Index | GB/T11026.1 | ≥155 |
