Studies on blends of epoxy-functionalized hyperbranched polymer and epoxy resin

被引:145
作者
Ratna, D
Varley, R
Raman, RKS
Simon, GP
机构
[1] Naval Mat Res Lab, Thana, India
[2] CSIRO, Melbourne, Vic 3168, Australia
[3] Monash Univ, Dept Mat Engn, Clayton, Vic 3800, Australia
关键词
D O I
10.1023/A:1021182320285
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
An epoxy-functionalized hyperbranched polymer (HBP) was used to toughen a conventional epoxy resin, diglycidyl ether of bisphenol A (DGEBA) cured with diethyltoluene-2,6-diamine (DETDA). There was little change in gel time as a result of addition of HBP, even though the HBP reacts at a slower rate with amine hardeners compared to DGEBA alone. Phase separation was investigated for various HBP contents and as a function of cure conditions as well. The thermal and dynamic viscoelastic behavior of the modified matrices have been examined and compared to the DGEBA epoxy matrix. It appears that the HBP which phase separates does not react as fully as when it is reacted with the amine alone. Nonetheless, good improvement in impact strength as a result of incorporation of HBP were observed and explained in terms of morphological behavior for a DGEBA matrix modified with various amounts of HBP. (C) 2003 Kluwer Academic Publishers.
引用
收藏
页码:147 / 154
页数:8
相关论文
共 53 条
  • [1] [Anonymous], 1978, POLYM BLENDS
  • [2] Role of blend morphology in rubber-toughened polymers
    Bagheri, R
    Pearson, RA
    [J]. JOURNAL OF MATERIALS SCIENCE, 1996, 31 (15) : 3945 - 3954
  • [3] MONITORING CROSSLINKING OF EPOXIDE RESINS BY THERMOANALYTICAL TECHNIQUES
    BARTON, JM
    [J]. JOURNAL OF MACROMOLECULAR SCIENCE-CHEMISTRY, 1974, A 8 (01): : 25 - 32
  • [4] BASCOM WD, 1989, ADV CHEM SER, V222, P135
  • [5] Billmeyer F.W., 1984, TXB POLYM SCI
  • [6] Boey FYC, 2000, J APPL POLYM SCI, V76, P1248, DOI 10.1002/(SICI)1097-4628(20000523)76:8<1248::AID-APP5>3.0.CO
  • [7] 2-0
  • [8] Dendritic hyperbranched polymers as tougheners for epoxy resins
    Boogh, L
    Pettersson, B
    Månson, JAE
    [J]. POLYMER, 1999, 40 (09) : 2249 - 2261
  • [9] BRETON MP, 1998, Patent No. 5266106
  • [10] BRETT CL, 1976, J APPL POLYM SCI, V20, P431