Study on high weld strength of impact propylene copolymer/high density polyethylene laminates |
| |
Authors: | Chun-hui Zhang Rui-fen Chen Feng Chen Yong-gang Shangguan Qiang Zheng Guo-hua Hu |
| |
Institution: | Chun-hui Zhang(a,b),Rui-fen Chen(a,b),Feng Chen(a,b),Yong-gang Shangguan(a,b**) and Qiang Zheng(a,b**) a Key Laboratory of Macromolecular Synthesis and Functionalization,Ministry of Education,Hangzhou 310027,China b Department of Polymer Science and Engineering,Zhejiang University,Hangzhou 310027,China Guo-hua Hu(c,d) c Laboratory of Reactions and Process Engineering,Nancy-Universite,CNRS-ENSIC-INPL,1 rue Grandville, BP 20451,54001 Nancy,France d Institut Universitaire de France,Maison des Universites,103 Boulevard Saint-Michel,75005 Paris,France |
| |
Abstract: | The impact propylene copolymer (IPC) and isotactic polypropylene (iPP) were separately selected to prepare laminates with high density polyethylene (HDPE) by hot press. The peel forces of IPC/HDPE
and iPP/HDPE laminates were examined, and it was found that the welded joint strength in IPC/HDPE laminate was dramatically higher
than that of iPP/HDPE laminate. According to the special microstructure of IPC, the co-crystallization of the ethylene segments in ethylene-propylene
block copolymer (EbP) component of IPC and the PE chain in HDPE was proposed to explain the highstrength welding. The DSC results indicated that
there indeed existed some interaction between IPC and HDPE, and the crystallizable PE component in IPC could affect the crystallization
of HDPE. The scanning electron microscope (SEM) observations of IPC/HDPE blends demonstrated that HDPE tended to stay with
the PE-rich EbP chains to form the dispersed phase, indicating the good miscibility between HDPE and EbP components of IPC. According to the above results, the effect of co-crystallization of the PE components of the IPC and
HDPE on the high weld strength of IPC/HDPE laminate was confirmed. |
| |
Keywords: | Impact propylene copolymer Polyethylene Cocrystallization High weld strength |
本文献已被 CNKI SpringerLink 等数据库收录! |
|