Moreover, the low molecular weight and higher temperature are favorable to reduce the melt viscosity, to increase the critical shear rate and to improve the apparent quality of extrudates.
较低的分子量和较高的温度有利于提高临界剪切速率，改善挤出物外观质量和降低熔体粘度。
With the increase of the melt temperature, the evaporation trend increases.
随着熔体温度的增加，挥发趋势也增大。
As accelerator for PET, PBT could decrease the cooling crystallization temperature and increase the melt crystallization temperature of recycled PET.
PBT作为PET结晶促进剂，降低回收PET的冷结晶温度，提高热结晶温度。
The high melt strength and heat stability of these resins permit the use of relatively large die openings and high-temperature draw-down techniques, which increase processing rates.
高熔体强度和热稳定性允许这些树脂较大的模具开口和高温画式的技术，从而增加处理速度使用。
The high melt strength and heat stability of these resins permit the use of relatively large die openings and high-temperature draw-down techniques, which increase processing rates.
高熔体强度和热稳定性允许这些树脂较大的模具开口和高温画式的技术，从而增加处理速度使用。
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