Entrance pressure instability of LLDPE and its composites

	Entrance pressure instability of LLDPE and its composites
	Hu, Haiqing 1; Liu, Jie 1; Sun, Tongjie 1; Zhao, Jian 1; Wang, Xin 1; Li, Chaoxu 2; Dong, Xia 3; Wang, Dujin 3
刊名	RSC ADVANCES
	2016
卷号	6 期号:85 页码:81703-81711
英文摘要	Oscillating flow, one of the most important instability phenomena in capillary flow, has long been identified to be related with the whole capillary pressure oscillation under constant piston speed. Although the appearance of surface distortions has been theorized by Weill since 1980 to originate in high-frequency oscillatory flow created at the die entry, the entrance pressure instability has not yet been studied experimentally. In this study Bagley correction was applied to calculate the instability of entrance pressure drop in capillary flow via both a constant-pressure capillary rheometer and a constant-rate capillary rheometer. The rheology of LLDPE and its composites with different kinds of fillers was measured to elaborate the phenomenon of flow instability. The entrance pressure fluctuation was clearly observed during the extrusion process, which was revealed to closely correlate with stress perturbation and extrudate morphologies. Furthermore, the flow instability was found to be depressed by increasing temperature and could be explained by the local stick-slip transition and disentanglement.
收录类别	SCI
语种	英语
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/35244]
专题	化学研究所_工程塑料实验室
作者单位	1.Qingdao Univ Sci & Technol, Sch Polymer Sci & Engn, Key Lab Rubber Plast, Minist Educ,Shandong Prov Key Lab Rubber Plast, Qingdao 266042, Peoples R China 2.Chinese Acad Sci, Qingdao Inst Bioenergy & Bioproc Technol, CAS Key Lab Biobased Mat, Qingdao 266101, Peoples R China 3.Chinese Acad Sci, Beijing Natl Lab Mol Sci, Inst Chem, Beijing 100190, Peoples R China
推荐引用方式 GB/T 7714	Hu, Haiqing,Liu, Jie,Sun, Tongjie,et al. Entrance pressure instability of LLDPE and its composites[J]. RSC ADVANCES,2016,6(85):81703-81711.
APA	Hu, Haiqing.,Liu, Jie.,Sun, Tongjie.,Zhao, Jian.,Wang, Xin.,...&Wang, Dujin.(2016).Entrance pressure instability of LLDPE and its composites.RSC ADVANCES,6(85),81703-81711.
MLA	Hu, Haiqing,et al."Entrance pressure instability of LLDPE and its composites".RSC ADVANCES 6.85(2016):81703-81711.