Effective dissolution of UHMWPE in HDPE improved by high temperature melting and subsequent shear
2014; Wiley; Volume: 55; Issue: 2 Linguagem: Inglês
10.1002/pen.23898
ISSN1548-2634
AutoresHongwang Shen, Lei He, Chunhua Fan, Bang‐Hu Xie, Wei Yang, Mingbo Yang,
Tópico(s)Injection Molding Process and Properties
ResumoA simple and effective way was expected to improve the blending of ultra-high-molecular-weight polyethylene (UHMWPE) in high-density polyethylene (HDPE) matrix. HDPE/UHMWPE blends were subjected to high temperature melting (HTM) at 280°C for up to 10 h, followed by shear at 175°C. These results were examined by scanning electron microscopy, polarized optical microscopy, and melt rheological behavior. UHMWPE particle was swelled partially during HTM, and this swollen region could be peeled from the particle by the subsequent shear, which resulted in more "dissolution" of UHMWPE in HDPE matrix. These results were also validated by the rheological behavior. POLYM. ENG. SCI., 55:270–276, 2015. © 2014 Society of Plastics Engineers
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