注塑成型成型指南.ppt

July 2002 CHALLENGING BOUNDARIES TECHNYL Molding Guide泰克尼成型指南 CHALLENGING BOUNDARIES CHALLENGING BOUNDARIES July 2002 CHALLENGING BOUNDARIES ENGINEERING PLASTICS Careful handling of the polyamide products 小心处理聚酰胺产品 Keep granules in their sealed bags or containers until required 请保持颗粒在密封袋或密封容器内直到需求使用前 Be sure to use the polymer granules within one hour after opening its sealed packaging 确保使用的颗粒在开封后1小时内用完。 Seal partly used bags again to reduce any moisture absorption使用完后的余料须及时密封以减少水分的吸收。 Dry material prior to processing in case of too high moisture content, to control 0.2% 如果水分含量太高，成型前须干燥，控制含水率0.2%. Rate of water absorption by granules at 23°C塑胶颗粒在23度时的吸水速度 0.6 0.5 0.4 0.3 0.2 0.1 0 Water content in granules (%) 颗粒含水率 0 1 2 3 4 5 6 7 Time (hours)时间 RH75 相对湿度75％ RH50 相对湿度50％ RH25 相对湿度25% TECHNYL A 218 Water absorption of the granules after the bag is opened 包装袋打开后颗粒的吸水性 Time after the bag is opened (hours) 包装袋打开后的时间 Lower part of the bag包装袋的最底层 TECHNYL A 218 Middle part of the bag 包装袋的中间层 Upper part of the bag 包装袋的表层 0 0.1 0.2 0.3 0.4 0 2 4 6 8 10 12 14 16 18 20 22 24 Water content in granules (%) 颗粒吸水率 Drying very humid granules(example:recycle material) 湿料的干燥(如：回料） Drying time (hours) 干燥时间 TECHNYL A 218 V30 0 0.1 0.2 0.3 0.5 0.4 0.6 0.7 0.8 0.9 0 5 10 15 20 25 30 Desiccant dryer 除湿干燥机 Temperature: 80°C 温度80 °C Dew point: -35°C 露点-35 °C Water content in granules (%) 颗粒含水率 Different ways of drying 不同的干燥方法 TECHNYL A 218 Temperature: 80°C 0 0.05 0.1 0.15 0.2 0.25 0 2 4 6 8 10 12 14 Vacuum dryer真空干燥机 Hot air dryer热风干燥机 Desiccant dryer (dew point -30°C) 除湿干燥机，露点－30c Water content in granules (%) 颗粒含水率 Drying time (hours)干燥时间 Dryer type drying time 干燥机类型与干燥时间 Dehumidifying Dryer 除湿干燥机 Hot Air dryer热风干燥机 Natural and light color material 自然色与轻颜色的材料 Temperature = 70 ~ 80℃ 温度=70～80℃ Time = 2 ~ 3hrs (closed bag) 时间=2~3小时（密封袋） Max. 8hrs (opened bag) 最大8小时（开包） Natural and light color material 自然色与轻颜色的材料 Temperature = 80 ~ 90℃ 温度= 80 ~ 90℃ Time =