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《工程塑料应用》 2022年第11期
DOI:10.3969/j.issn.1001-3539.2022.11.013
双螺杆组合对增强无卤阻燃改性PBT性能的影响
郑夏莲,马元好
宜春学院物理科学与技术工程学院,江西宜春 336000 
Effect of Twin Screw Combination on Properties of Reinforced Halogen-Free Flame Retardant PBT
Zheng Xialian, Ma Yuanhao
Physics Science and Engineering Technology Institute, Yichun College, Yichun 336000, China 
摘要:采用3种螺杆组合,其特性分别为高输送高剪切组合(1#)、低输送高剪切组合(2#)、大导程中剪切组合(3#),在3组不同挤出温度组合下制得玻璃纤维增强无卤阻燃改性聚对苯二甲酸丁二酯(PBT)材料,测试其拉伸强度、弯曲强度、缺口冲击强度和阻燃性能,得出最佳的温度组合;然后在最佳温度组合下,改变主机螺杆转速,测试了3种螺杆组合制备的改性PBT性能,以获得最佳的螺杆转速和螺杆组合。结果表明,在相同条件下,1#螺杆组合制得的改性PBT的性能比其余两组螺杆组合制得的改性PBT的性能更好,在适中的第2组温度(170~240℃)和较高的主机螺杆转速(375 r/min)下制得的性能更佳。与温度和螺杆转速相比,螺杆组合对改性PBT性能的影响更为明显。 
Abstract:Three screw combinations were used, the characteristics of them were high conveying and high shearing combination (1#), low conveying and high shearing combination (2#), large lead and medium shearing combination (3#) respectively, the glass fiber reinforced halogen-free flame retardant polybutylene terephthalate (PBT) materials were prepared by the three screw combinations at three different extrusion temperature combinations, and the tensile strength, bending strength, notched impact strength and flame retardant properties of the materials were tested to obtain the best temperature combination. Then, the properties of PBT prepared by the three screw combinations were tested by changing the screw rotation speed of the main engine at the best temperature combination, so as to obtain the best screw rotation speed and the best screw combination. The results show that, under the same conditions, the properties of PBT made by the screw combination of 1# are better than that made by the other two screw combinations. The properties of PBT prepared by the three screw combinations are better at the moderate temperature combination of the second group (170-240℃) and the high screw rotating speed (375 r/min). Compared with the temperature and screw rotating speed, the effects of the screw combination on the properties of PBT is more obvious. 
关键词:聚对苯二甲酸丁二酯;螺杆组合;螺杆转速;挤出温度;性能 
Keywords:polybutylene terephthalate; screw combination; screw speed; extrusion temperature; property 
本文引用格式:
郑夏莲,马元好.双螺杆组合对增强无卤阻燃改性PBT性能的影响[J].工程塑料应用,2022,50(11):79-83,96.
Zheng Xialian,Ma Yuanhao. Effect of twin screw combination on properties of reinforced halogen-free flame retardant PBT[J]. Engineering Plastics Application,2022,50(11):79-83,96. 

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