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1、定义与用途
环氧玻璃布层压板是由经化学处理的电工用无碱玻璃纤维布为基材,以环氧树脂作为粘合剂经热压而成的 层压制品,高温下机械强度高,高湿下电气性能稳定性好。适用于机械、电气及电子等领域。
2、技术要求
2、1环氧玻璃布层压板外观
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 indicatio
序 号 | 项 目 | 试验状态 | 单 位 | 试验标准 | 指 标 |
No. | Item | Testing state | Unit | Testing standard | 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 | 弯曲强度 Flexural Strengthat |
常态(23+2)℃ Under normal |
MPa | GB/T5130 | ≥410 |
热态(150+5)℃ At heat | |||||
≥240 | |||||
7 | 弯曲弹性模量 Modulus of Elasticity in Flexure |
Mpa | 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 |
—— | ≥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 |
kJ/ m | 纵向 Lengthwise |
≥160 |
横向 Crosswise |
≥120 | ||||
(缺口) Notched |
纵向 Lengthwise |
≥40 | |||
横向 Crosswise |
≥30 | ||||
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 | |||||
14 | 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 | ||||
15 | 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 | |
16 | 平行层向耐电压 | (于90℃+2℃变压器油中1min) Dielectric strength in transformer oil at 90℃ for 1 min |
kv | ≥45 | |
17 | 介质损耗因数 Dielectric loss factor |
(于浸水后,1MHz时) after immersion at 1MHz |
≤0.04 | ||
18 | 介质常数 Dielectric loss Constant |
(于浸水后,1MHz时) after immersion at 1MHz |
≤5.5 | ||
19 | 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 | ||||
20 | 体积电阻率 Volume Resistivity |
常态 Under normal |
MΩ.m | GB/T1410 | ≥1.0×10 |
常态 Under normal | 浸水(23+2℃/24h) After Immersion of 23+2℃ for 24th |
≥1.0×10 | |||
21 | 相比电痕化指数 Comparative Trackling Index |
GB/T4207 | ≥200 | ||
耐 热 性 能 Thermal Properties | |||||
22 | 玻璃化转变温度Tg Glass Transition Temperature |
℃ | IEC61006 | ≥172 | |
23 | 热压收缩率 Reduction rate of Heat press |
% | 参考ASTMD621 | ≤0.40 | |
24 | 温度指数 Thermal Index |
GB/T11026.1 | ≥155 | ||
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