日本宝理PBT宝理原料

日本国宝理PBT宝理原材料

The processing technology of PBT must be dry for 3 hours at 110 ~120 °c, the processing temperature is 250 ~ 270 °C, and the moldtemperature is 50 ~ 75 °C. Because the material from the meltingstate after refrigeration, it will immediately crystallize, so thecooling time is shorter; if the nozzle temperature control is notgood (slightly low) , flow channel (water part) easy refrigerationdry solid, there will be blocked. If the temperature of the barrelexceeds 275 °C or the waiting time of the wear-resistant materialin the barrel exceeds 30 minutes, the raw material will dissolveand become brittle easily. PBT injection processing with a lot ofwater into the rubber, not suitable for the application of hotrunner system, mold shell exhaust pipe to be excellent, suitablefor "high speed, high pressure, medium temperature" standardforming production processing, fire safety material or add glassfiber PBT nozzle material is not suitable for recycling, shutdownto use PE or PP material immediately clean material tube, in orderto prevent carbonization. PBT is a thermosetting polymer, fordifferent manufacturers to apply, generally is how much will addpreservatives, or with other plastic compound fertilizer, withdifferent proportion of additives, can produce differentspecifications and models of goods. Because PBT has heatresistance, aging resistance, good electrical equipmentcharacteristics, water absorption capacity, good gloss, widely usedin electronic and electrical, automotive parts, mechanicalequipment, household appliances, etc. , and PBT COMMODITIES ANDPPS, PC, POM, PA, known as the five universal rubberproducts. 

注塑成型标准；

干躁解决：这类原材料在高溫下非常容易水解反应，生产加工前的干躁解决是很重要的。提议在空气中的干躁标准为120℃，6~8钟头，或是150℃，2~4钟头。环境湿度务必低于0.03%。假如用吸潮空气干燥器干躁，提议标准为150℃，2.5钟头。

熔融溫度：225~275℃，提议溫度：250℃。

模貝溫度：针对未加强型的原材料为40~60℃。要非常好地设计方案模貝的制冷腔道以减少塑料件的弯折。发热量的蒸发一定要快而匀称。提议模貝制冷腔道的直徑为12mm。

注入工作压力：中等水平（到1500bar）。

注入速率：应应用尽量快的注入速率（由于PBT的凝结迅速）。

过流道和进胶口：提议应用环形过流道以提升工作压力的传送（经验公式定律：流道直徑=塑料件薄厚1.5毫米）。能够应用各种各样形式的进胶口。还可以应用热流道系统，但要留意避免原材料的漏水和溶解。进胶口直徑应当在0.8~1.0*t中间，这儿t是塑料件薄厚。如果是潜进式进胶口，提议小直徑为0.75mm。

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