特性/Features
玻璃化溫度130℃ B級
TG130℃ B Class
主要特性/General properties
序號No. | 指 標 名 稱 Item | 單 位 Unit | 指 標 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（直徑25mm）(Diameter 25mm) | 0.6 |
3 | 彎曲強度 Flexural Strength | MPa | ≥118 | 128 |
4 | 拉伸強度 Tensile strength | MPa | ≥80 | 91 |
5 | 平行層向絕緣電阻 Parallel to layer Insulation Resistance | Ω | ≥1.0×108 | 3.5×109 |
6 | 平行層向擊穿電壓 20℃±2℃變壓器油中Parallel to layer direction Breakdown Voltage （20±2℃ in transformer oil ) | kV | ≥10.0 | 12 |
外觀
表面應光滑◕₪▩↟╃，無氣泡◕₪▩、油汙及雜質◕₪▩↟╃，允許有不影響使用的輕微樹脂積膠和斑痕；兩端須切割整齊◕₪▩↟╃，端頭不得有裂紋；棒的接縫線寬度應符合如下規定••↟：直徑15mm及以下者不得超過2mm◕₪▩↟╃，直徑15mm至60mm者不得超過3mm◕₪▩↟╃，直徑60mm以上者不得超過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
直徑偏差••↟：Diameter Tolerance : 翹曲度••↟：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 |
應用領域/Application
3721酚醛層壓布棒是用棉布浸以酚醛樹脂◕₪▩↟╃，經成型模具熱壓而成◕₪▩↟╃，其截面呈圓形₪₪▩₪✘。
3721棒具有較高的機械強度◕₪▩↟╃，適用於電器裝置中作絕緣結構零部件◕₪▩↟╃，並可變壓器油中使用₪₪▩₪✘。
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 .