Synergistic enhancement of crystallization and mechanical performance of polypropylene random copolymer by strong shear and beta-nucleating agent
文献类型：期刊论文
| 作者 | Qi, Yanxin1,2; Zhang, Chunbo1,3; Zhao, Ying1; Wang, Dujin1,2; Lei, Jun4,5; Li, Zhongming4,5 |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2017-08-01 |
| 卷号 | 66期号:8页码:1141-1150 |
| 关键词 | Ppr Beta-nucleating Agent Crystalline Structure Mechanical Properties |
| 英文摘要 | Investigation of microstructure and properties is critical for the development and application of polymer materials. Polypropylene random copolymer (PPR) and beta-nucleated PPR are widely used in water pipe production. The effect of melt shear flow on the crystalline structure and mechanical properties of PPR containing beta-nucleating agent needs in-depth understanding. In this paper, we demonstrated the preparation of PPR and PPR containing 0.1wt% calcium pimelate (Ca-Pim) samples by conventional injection molding (CIM) and oscillation shear injection molding (OSIM). The multilayer structures and morphologies of the samples were characterized by SEM, two-dimensional X-ray scattering and DSC. The mechanical properties and the microstructures of samples prepared by these two injection molding methods were compared. Compared with samples prepared by CIM, the stronger shear provided by OSIM induced the formation of a thicker layer of a shish-kebab structure and a higher content of crystals, and dramatically suppressed the beta-nucleating effect of Ca-Pim. The OSIM samples have more shish-kebab structures and higher crystallinities than CIM samples and therefore the former exhibit better rigidity than the latter. The crystals in the core layer and the thicker layer of shish-kebab structure endow OSIM-PPR/0.1wt% Ca-Pim with excellent impact toughness. (c) 2017 Society of Chemical Industry |
| 语种 | 英语 |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/39002]  |
| 专题 | 化学研究所_工程塑料实验室 |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Beijing, Peoples R China 3.Natl Inst Clean & Low Carbon Energy, Dept Polymer Mat, Ctr Adv Mat, Beijing, Peoples R China 4.Sichuan Univ, Coll Polymer Sci & Engn, Chengdu, Peoples R China 5.Sichuan Univ, State Key Lab Polymer Mat Engn, Chengdu, Peoples R China |
| 推荐引用方式 GB/T 7714 | Qi, Yanxin,Zhang, Chunbo,Zhao, Ying,et al. Synergistic enhancement of crystallization and mechanical performance of polypropylene random copolymer by strong shear and beta-nucleating agent[J]. POLYMER INTERNATIONAL,2017,66(8):1141-1150. |
| APA | Qi, Yanxin,Zhang, Chunbo,Zhao, Ying,Wang, Dujin,Lei, Jun,&Li, Zhongming.(2017).Synergistic enhancement of crystallization and mechanical performance of polypropylene random copolymer by strong shear and beta-nucleating agent.POLYMER INTERNATIONAL,66(8),1141-1150. |
| MLA | Qi, Yanxin,et al."Synergistic enhancement of crystallization and mechanical performance of polypropylene random copolymer by strong shear and beta-nucleating agent".POLYMER INTERNATIONAL 66.8(2017):1141-1150. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。