收藏我们   ENGLISH  
客服QQ
  点击这里给我发消息505255386
微信
  微信公共号
关键词查询
范围:  
提 交
《工程塑料应用》 2020年第02期
DOI:10.3969/j.issn.1001-3539.2020.02.012
注塑工艺对玻纤增强PBT/微球发泡材料力学性能的影响
高亮,章超,朱纳鑫,张恒頔
快思瑞科技(上海)有限公司,上海 201315 
Effects of Injection Molding Process on Mechanical Properties of Glass Fiber Reinforced PBT/Microsphere Foam Materials
Gao Liang, Zhang Chao, Zhu Naxin, Zhang Hengdi
Crerax Science and Technology Co. Ltd., Shanghai 201315, China 
摘要:利用可膨胀微球注塑发泡方法制备了玻纤增强PBT/微球发泡材料,考察了不同注塑工艺对玻纤增强PBT/微球发泡材料力学性能的影响。结果表明,料筒温度、注塑压力与保压时间的提高有利于微球发泡从而降低玻纤增强PBT/微球发泡材料的密度,但料筒温度升高会使拉伸比强度值与弯曲比强度值呈先升高再下降的趋势;注塑压力增加会使拉伸比强度值先下降再上升,弯曲比强度值波动上升;保压时间增加会使拉伸比强度值与弯曲比强度值均呈上升趋势。增加背压会使玻纤增强PBT/微球发泡材料密度上升,拉伸比强度值在背压为0时最大,呈波动下降趋势,弯曲比强度值则先下降再上升。螺杆转速增加会导致玻纤增强PBT/微球发泡材料的密度先减小后增大,比强度值先增大后减小。玻纤增强PBT/微球发泡材料成型最佳工艺参数为料筒温度240℃,注塑压力1.0 MPa,背压0 MPa,保压时间5 s,螺杆转速25 r/min,发泡材料的密度为1.3472 g/cm3,减重10.78%,拉伸比强度提高6.14%,弯曲比强度增加9.74%。 
Abstract:The glass fiber reinforced polybutylene terephthalate (PBT) micro-foaming material was prepared by the expansion microsphere injection foaming method. The effects of different injection molding processes on the mechanical properties of PBT/microsphere foaming materials were investigated. The results show that the increase in barrel temperature, injection pressure and dwell time is conductive to microsphere foaming, which reduces the density of glass fiber reinforced PBT/microsphere foamed materials. However, increasing barrel temperature will increase the tensile strength and the bending strength first, then decrease; increasing the injection pressure will decrease the tensile strength first and then increase, and the bending strength will increase; increasing the dwell time will increase the tensile strength and bending strength. Increasing the back pressure will increase the density of glass fiber reinforced PBT/microsphere foamed materials, and the tensile strength is maximum when the back pressure is 0, showing a downward trend in fluctuation, and the bending strength will first decrease and then increase. The increase of the screw speed causes the density of PBT/microsphere to decrease first and then increase, and the specific strength value increases first and then decreases. Therefore, the optimum process parameters for glass fiber reinforced PBT/microsphere foaming material is that barrel temperature is 240℃, injection pressure is 1.0 MPa, back pressure is 0 MPa, holding time is 5 s and screw speed is 25 r/min. The density of the foamed material is 1.3472 g/cm3, the weight loss is 10.78%, the tensile strength is increased by 6.14%, and the bending strength is increased by 9.74%. 
关键词:聚对苯二甲酸丁二酯;可膨胀微球;注塑工艺;力学性能 
Keywords:polybutylene terephthalate; expandable microspheres; injection molding process; mechanical property 
本文引用格式:
高亮,章超,朱纳鑫,等.注塑工艺对玻纤增强PBT/微球发泡材料力学性能的影响[J].工程塑料应用,2020,48(2):60-65.
Gao Liang,Zhang Chao,Zhu Naxin,et al. Effects of injection molding process on mechanical properties of glass fiber reinforced PBT/microsphere foam materials[J]. Engineering Plastics Application,2020,48(2):60-65. 

原文:
 
相似文章:
  注塑工艺对GFPP/可膨胀微球发泡制件收缩率的影响
2020年第05期
  二胺结构对聚亚胺vitrimer材料性能的影响
2020年第05期
  聚氨酯/无机填料复合材料制备及性能
2020年第04期
  热膨胀微球发泡剂对TPU泡沫结构与性能影响
2020年第04期
  丙烯基弹性体和乙烯-辛烯共聚物增韧聚丙烯性能
2020年第04期
  PE-HD/GNP/MWCNT纳米复合材料性能
2020年第04期
  MWCNT分布对POE/PA12复合材料性能影响
2020年第03期
  建筑用膨胀石墨阻燃聚氨酯泡沫材料的制备及性能
2020年第02期
  组分对PC/PBT/GF三元复合材料的影响
2020年第02期
  共聚物PVC-g-C合成及其抗菌性能
2020年第02期
《工程塑料应用》杂志社 版权所有,未经授权禁止复制或者建立镜像
地址:山东省济南市天桥区田庄东路3号 邮编:250031
电话:0531-85878057 85878223 85878278 传真:0531-85947355
鲁ICP备05018524号-5