特性/Features
玻璃化温度130℃ B级
TG130℃ B Class
主要特性/General properties
序号No. | 指 标 名 称 Item | 单 位 Unit | 指 标 值 Specified Value | 典型值 Typical Value |
1 | 密度 Density | g/cm3 | ≥1.25 | 1.28 |
2 | 吸水率 Water Absorption | % | ≤1.0(直径25mm)(Diameter 25mm) | 0.6 |
3 | 弯曲强度 Flexural Strength | MPa | ≥118 | 128 |
4 | 拉伸强度 Tensile strength | MPa | ≥80 | 91 |
5 | 平行层向绝缘电阻 Parallel to layer Insulation Resistance | Ω | ≥1.0×108 | 3.5×109 |
6 | 平行层向击穿电压 20℃±2℃变压器油中Parallel to layer direction Breakdown Voltage (20±2℃ in transformer oil ) | kV | ≥10.0 | 12 |
外观
表面应光滑,无气泡、油污及杂质,允许有不影响使用的轻微树脂积胶和斑痕;两端须切割整齐,端头不得有裂纹;棒的接缝线宽度应符合如下规定:直径15mm及以下者不得超过2mm,直径15mm至60mm者不得超过3mm,直径60mm以上者不得超过4mm。
Appearance: the surface should be smooth, no bubbles, wrinkles. no obvious scratch marks. Both ends should be cut neatly . The seam line on the rod should meet the following requirement :
Diameter under 15mm:≤ 2mm
Diameter 15mm-60mm :≤3mm
Diameter over 60mm : ≤4mm
直径偏差:Diameter Tolerance : 翘曲度:Warpage :
偏 差 Tolerance | |
8~12 | ±0.5 |
>12~16 | ±0.7 |
>16~28 | ±1.0 |
>28~45 | ±1.5 |
>45~65 | ±2.0 |
>65~100 | ±2.3 |
应用领域/Application
3721酚醛层压布棒是用棉布浸以酚醛树脂,经成型模具热压而成,其截面呈圆形。
3721棒具有较高的机械强度,适用于电器设备中作绝缘结构零部件,并可变压器油中使用。
3721 phenolic laminated cloth rod is made of cotton cloth dipped in phenolic resin, and then hot press by molding ,and the section is round .
The main properties of 3721 rod are as below: High mechanical strength , suitable for insulation component in electrical equipment and transformer oil .