文化大學機構典藏 CCUR:Item 987654321/2772
English  |  正體中文  |  简体中文  |  Items with full text/Total items : 46962/50828 (92%)
Visitors : 12465223      Online Users : 876
RC Version 6.0 © Powered By DSPACE, MIT. Enhanced by NTU Library IR team.
Scope Tips:
  • please add "double quotation mark" for query phrases to get precise results
  • please goto advance search for comprehansive author search
    •  Adv. Search
    Home ‧ Login ‧ Upload ‧ Help ‧ About ‧ Administer Goto mobile version


    Please use this identifier to cite or link to this item: https://irlib.pccu.edu.tw/handle/987654321/2772


    Title: Mechanical properties of blocked polyurethane/epoxy interpenetrating polymer networks
    Authors: Chen CH
    Sun YY
    Contributors: 材料所
    Keywords: interpenetrating polymer networks (IPNs)
    mechanical properties
    polyurethanes
    epoxy
    Date: 2006
    Issue Date: 2009-11-20 13:37:34 (UTC+8)
    Abstract: The mechanical properties of blocked polyurethane(PU)/epoxy interpenetrating polymer networks (IPNs) were studied by means of their static and damping properties. The studies of static mechanical properties of IPNs are based on tensile properties, flexural properties, hardness, and impact method. Results show that the tensile strength, flexural strength, tensile modulus, flexural modulus, and hardness of IPNs decreased with increase in blocked PU content. The impact strength of IPNs increased with increase in blocked PU content. It shows that the tensile strength, flexural strength, tensile modulus, and flexural modulus of IPNs increased with filler (CaCO3) content to a maximum value at 5, 10, 20, and 25 phr, respectively, and then decreased. The higher the filler content, the greater the hardness of IPNs and the lower the notched Izod impact strength of IPNs. The glass transition temperatures (T-g) of IPNs were shifted inwardly compared with those of blocked PU and epoxy, which indicated that the blocked PU/epoxy IPNs showed excellent compatibility. Meanwhile, the T was shifted to a higher temperature with increasing T-g filler (CaCO3) content. The dynamic storage modulus (E') of IPNs increased with increase in epoxy and filler content. The higher the blocked PU content, the greater the swelling ratio of IPNs and the lower the density of IPNs. The higher the filler (CaCO3) content, the greater the density of IPNs, and the lower the swelling ratio of IPNs. (c) 2006 Wiley Periodicals, Inc.
    Relation: JOURNAL OF APPLIED POLYMER SCIENCE Volume: 101 Issue: 3 Pages: 1826-1832
    Appears in Collections:[Department of Chemical & Materials Engineering] journal articles

    Files in This Item:

    File Description SizeFormat
    index.html0KbText2061View/Open


    All items in CCUR are protected by copyright, with all rights reserved.

    DSpace Software Copyright © 2002-2004  MIT &  Hewlett-Packard  /   Enhanced by   NTU Library IR team Copyright ©   - Feedback