標題: Mechanical behaviours of fully and semi-interpenetrating polymer networks based on epoxy and acrylics
作者: Lin, MS
Lee, ST
交大名義發表
應用化學系
National Chiao Tung University
Department of Applied Chemistry
關鍵字: mechanical behaviours;fully IPN;semi-IPN;impact resistance
公開日期: 1-一月-1997
摘要: Fully interpenetrating polymer networks (fully IPNs) based on diglycidyl ether of bisphenol A (DGEBA) and ethylene dimethacrylate (EDMA) were prepared using isophronediamine and benzoyl peroxide as curing agents. Semi-interpenetrating polymer networks (semi-IPNs) based on DGEBA and 2-hydroxyethyl methacrylate (HEMA) were also prepared using the same curing agents. The average activation energies of transition for both these IPNs were calculated from rheometric dynamic spectroscopy (r.d.s.) data, which indicated higher values for the fully IPNs than the corresponding semi-IPNs. The more acrylic the interpenetrating polymer network (both fully and semi-IPNs) contained the lower the activation energy of transition. Broadened tan 6 peaks were observed for compatible materials, implying an enhanced cracking energy absorption. RDS data also revealed a maximum half-width of tan 6 at 30% of EDMA for the fully IPNs and at 25% of HEMA for the semi-IPNs. Beyond these compositions, decreased impact resistance and lower tensile modulus and elongation values were observed for these materials, presumably because of microphase-separation. Copyright (C) 1996 Elsevier Science Ltd.
URI: http://hdl.handle.net/11536/801
ISSN: 0032-3861
期刊: POLYMER
Volume: 38
Issue: 1
起始頁: 53
結束頁: 58
顯示於類別:期刊論文


文件中的檔案:

  1. A1997WB71600008.pdf