Entrance pressure instability of LLDPE and its composites
文献类型：期刊论文
| 作者 | Hu, Haiqing1; Liu, Jie1 ; Sun, Tongjie1; Zhao, Jian1; Wang, Xin1; Li, Chaoxu2; Dong, Xia3; Wang, Dujin3
|
| 刊名 | RSC ADVANCES
 |
| 出版日期 | 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. |
| WOS标题词 | Science & Technology ; Physical Sciences |
| 类目[WOS] | Chemistry, Multidisciplinary |
| 研究领域[WOS] | Chemistry |
| 关键词[WOS] | LOW-DENSITY POLYETHYLENE ; MELT FLOW INSTABILITIES ; STICK-SLIP TRANSITION ; CAPILLARY-FLOW ; WALL SLIP ; OSCILLATING FLOW ; EXTRUDATE DISTORTION ; POLYMER MELTS ; EXTRUSION ; SHARKSKIN |
| 收录类别 | SCI |
| 语种 | 英语 |
| WOS记录号 | WOS:000382776000031 |
| 源URL | [http://ir.qibebt.ac.cn/handle/337004/8416]  |
| 专题 | 青岛生物能源与过程研究所_仿生智能材料团队 |
| 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. |
入库方式： OAI收割
来源：青岛生物能源与过程研究所
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