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3248环氧玻璃布层压板
一、3248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。
二、3248环氧玻璃布层压板技术要求
1、产品的颜色为淡青色或浅褐色。
2、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。
3248环氧玻璃布层压板主要性能指标
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/cm3
|
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
|
11.1×10-6
|
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/ m2
|
≥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
|
≥1.0×106
|
|
浸水(24+1)h后
After Immersion for24+1h
|
≥5.0×104
|
|
|||
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
|
≥1.0×107
|
|
浸水(23+2℃/24h)
After Immersion of 23+2℃ for 24th
|
≥1.0×105
|
|
|||
体积电阻率
Volume Resistivity
|
常态 Under normal
|
MΩ.m
|
≥1.0×105
|
|
|
浸水(23+2℃/24h)
After Immersion of 23+2℃ for 24th
|
≥1.0×103
|
|
|||
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
|
|