PRODUCT DESCRIPTION产品描述
G-7942/7941is an optimally filled casting resin system with good impregnation capability for processing and curing at room temperatures or slightly elevated temperatures. It is suitable for atmospheric or vacuum casting. The product is featured with its very good thermal shock resistance, thermal endurance and flame retardance.It is suitable for the application such as voltage regulators, relays, resistor networks, iron core transformers, modules, proximity switches, etc.G-7942/7941是一种拥有良好的注入性能的环氧树脂浇铸系统，它可在室温或略高的温度下固化并且适合于大气下或真空浇铸。固化后的产品具有极好的热冲击性能，耐热性能和阻燃性。适用于调压器，继电器，电阻网络，铁心变压器，模块，接近开关等。
PROPERTIES OF UNCURED MATERIAL固化前材料性能
Properties 性能 | Test Method 测试方法 | Resin-A 环氧树脂-A | Hardener-B 固化剂-B | Mixed-A/B 混合物-A/B |
Color/Appearance 颜色/外观 | Visual 目测法 | Green liquid 绿色液体 | Clear yellowish liquid透明黄色液态 | green 绿色 |
Specific Gravity 比重 | ASTM D-792 | 1.71 | 1.01 | 1.62 |
Viscosity @ 25°C, cps粘度（25°C） | ASTM D-2393 | 21,400 | 148 | 3,900 |
TYPICAL CURED PROPERTIES固化后属性
Property性能 | Test Method测试方法 | value数值 |
Hardness (Shore D)硬度 | DIN 53 505 | 80 |
Elongation at break at 25 ºC断裂延伸率, % | ISO 527T2/93 | 15 |
Tensile strength at 25 ºC拉伸强度, MPa | ISO 527T2/93 | 15 |
Glass transition temperature 玻璃化转变温度, Tg, ºC | DMA | 20 |
Thermal Conductivity导热率, W/M-K | ISO 8894/90 | 0.502 |
Coefficient of linear thermal expansion 线性热膨胀系数, CTE，ppm/K | DIN 53 752/80 | 41 |
Max. service temperature最大工作温度, ºC |
| 130 |
Water absorption, one day at 24 ºC, % weight吸水率,1天 | ISO 63/80 | 0.25 |
Dielectric strength, kV/mm | ASTM D149 | 24 |
Flammability | UL 94 | V0 |
CURING SCHEDULE固化步骤
Resin/Hardener Ratio (by weight) 树脂与固化剂重量比 | 100 / 12 |
Resin/Hardener Ratio (by volume)树脂与固化剂体积比 | 100 / 20.4 |
Working life, 25°C, minutes 操作时间，25°C，分钟 | 40 |
CURING TIME TABLE 固化进度表
Temperature 温度 | Minimum Cure Time 最少固化时间 |
25 ºC (77ºF) | 24 hours |
60 ºC (158ºF) | 6 hours |
SHELF METHOD保存方法
Store at 15 - 30 ºC in a dry place. After each use, tightly reseal.每次用完后，应密封保存于15 - 30 ºC的干燥地方。
SHELF LIFE储藏寿命
Provided this material is stored under the recommended storage conditions in their original containers, it will remain in useable condition for one year from date of shipping.采用原始包装，保存于15 - 30 ºC的干燥地方，保质期为一年（从发货之日算起）。
