G-447/947is a liquid, hot cure, two component epoxy casting system. The cured system exhibit high mechanical, especially, high thermal shock resistance and high glass transition temperature.Application includes indoor medium and high voltage electrical insulating components, such as switch, encapsulation of large metal components with following advantages.G-447/947是一种液态，热固化，双组分环氧树脂浇铸灌封系统。该产品固化后表现出高的抗机械冲击性能，特别的优点在于其高的抗热冲击性能和高的玻璃化转变温度。该产品的应用范围包括室内中高电压用的电绝缘组件的制造，如开关和一些大型金属零部件的密封等并具有以下优点。
² Long term stresses with service temperature up to 85 °C.可长时间在85 °C以上工作.
² Very high thermal shock resistance.极高的抗热冲击性能.
² High mechanical and electrical properties at elevated temperature.在温升下具有好的机械性能和电学性能.
² Good balance of toughness and elevated glass transition temperature.韧性和高的玻璃化转变温度的完美平衡.
PROPERTIES OF UNCURED MATERIAL固化前材料性能
Properties 性能 | Test Method 测试方法 | Resin-336 树脂-336 | Hardener-936 固化剂-936 |
Color/Appearance 颜色/外观 | Visual 目测法 | viscous Liquid 粘性液体 | natural Liquid 自然色液体 |
Specific Gravity 比重 | ASTM D-792 | 1.18
| 1.21 |
Viscosity @ 25°C, cps粘度（25°C） | ASTM D-2393 | 9,000-14,000 | 350 |
Shelf life, 25°C, month保质期，月 |
| 12 | 12 |
TYPICAL CURED PROPERTIES固化后属性
Property 性能 | Test Method 测试方法 | value 数值 |
Specific gravity比重, g/cc |
| 1.78 @60% filler |
Elongation at break断裂伸长率, % |
| 1.3 |
Tensile strength拉伸强度, Mpa |
| 80 |
Tensile modulus拉伸模量, Mpa |
| 11,000 |
Flexural strength挠曲强度, Mpa | ASTM D790 | 125(25ºC),120(80ºC) |
Compressive strength抗压强度, Mpa |
| 148 |
Critical stress intensity factor, 临界应力强度因子K1C, Mpa.m1/2 |
| 2 |
Impact strength冲击强度, kJ/m2 |
| 9 (25 ºC),10 (80 ºC) |
Glass transition temperature玻璃化转变温度, ºC |
| 120 |
Thermal conductivity热导率,w/m-k |
| 0.9 |
Coefficient of thermal expansion 热膨胀系数, CTE | ASTM D3386 | 35 E-06 |
Water absorption吸水率, % weight, 10days, 25 ºC |
| 0.12 |
Flammability rating易燃等级 | UL94 | V-1(12mm),HB(4mm) |
Thermal aging class热老化等级, 20000 hours | IEC | Class H |
Thermal endurance by flexural strength 挠曲强度下的耐热程度, 20000/5000 h |
| 199/240 ºC |
HV Arc resistance抗电弧性, seconds | ASTM D945 | 185 |
Breakdown strength,击穿强度3mm, kV/mm |
| 20 |
DIRECTIONS FOR USE使用指南
Mix Ratioby Weight重量比
Resin-2336树脂-336 | 100 |
Hardener-936固化剂-936 | 80 |
Silica Filler二氧化硅填料 | 270 |
POT LIFE使用时间
Effective pot life is about 2 days at temperature 25 ºC.在25 ºC有效使用时间大约为2天.
Automatic Pressure Gelation Process自动压力凝胶工艺(APG)
² Pre-heat mold at 130-160 °C将模体预热到130-160 °C
² Gel in mold for 20-40 minutes在模体中凝胶20-40分钟
² Post cure 3 hrs @140 °C在140 °C下固化3小时
Conventional Gravity Casting Process Under Vacuum常规重力真空浇注工艺
² Pre-heat mold to 80- 100 °C将模体预热到80-100°C
² Fill mold under vacuum and gel for 5-8 hrs在真空下将浇注材料填入模体并凝胶5-8小时
² Post cure 8 hrs@140°C后固化8hrs@140°C
SHELF LIFE保存方法
Store at 15 - 25 ºC in a dry place. Hardener-936 is moisture sensitive, after each partial use, purge with dry nitrogen and tightly reseal.保存于15 - 25 ºC的干燥地方.Hardener-936容易受潮，每次用完后应用干氮气清理干净并密封保存.
