Fracture behavior at low strain rate of dynamically and statically vulcanized polypropylene/styrene-butadiene-styrene block copolymer blends

被引：8
作者：
Hernandez, M. [1 ]
Santana, O. O. [2 ]
Ichazo, M. N. [1 ]
Gonzalez, J. [1 ]
Albano, C. [3 ]
机构：
[1] Univ Simon Bolivar, Dept Mecan, Caracas 1080A, Venezuela
[2] Ctr Catala Plast, E-08222 Terrassa, Spain
[3] Cent Univ Venezuela, Escuela Ingn Quim, Caracas, Venezuela
来源：
POLYMER TESTING | 2008年 / 27卷 / 07期
关键词：
Fracture behavior; Polypropylene; Elastomer; Dynamic vulcanization; Static vulcanization;
D O I：
10.1016/j.polymertesting.2008.07.005
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
In this study, the fracture behavior of vulcanized thermoplastic/elastomer (PP/SBS) blends by means of the essential work of fracture (EWF) approach was investigated. Special reference was made to the influence of the blend ratio and the vulcanization method (dynamic and static). Tensile tests showed that the addition of elastomer particles to PP reduces the stiffness in the case of dynamically vulcanized blends. Also, the addition of SBS to PP affected both w(e) and w(p); w(e) increased with rubber content, whereas w(p) seemed to decrease, this effect being more significant for the dynamically cured systems. Hence, EWF revealed that the dynamic vulcanization method can impair fracture resistance of PP/SBS blends. (C) 2008 Elsevier Ltd. All rights reserved.
引用
收藏
页码：881 / 885
页数：5
相关论文
共 17 条
  • [1] BORBERG KB, 1968, INT J FRACT MECH, V4, P11
  • [2] CORAN AY, 1987, THERMOPLASTIC ELASTO, P135
  • [3] A study on the fracture characteristics of rubber toughened poly(ethylene terephthalate) blends
    Fung, KL
    Li, RKY
    [J]. POLYMER TESTING, 2005, 24 (07) : 863 - 872
  • [4] GRAY A, 1993, TESTING PROTOCOL ESS
  • [5] HERNÁNDEZ M, 2006, Rev. Fac. Ing. UCV, V21, P5
  • [6] Influence of type of vulcanization on rheological and thermal properties of PP/NR blends
    Hernández, M
    Albano, C
    González, J
    Ichazo, MN
    [J]. POLYMER BULLETIN, 2006, 56 (2-3) : 285 - 291
  • [7] Effects of composition and dynamic vulcanization on the rheological properties of PP/NBR blends
    Hernández, M
    González, J
    Albano, C
    Ichazo, M
    Lovera, D
    [J]. POLYMER BULLETIN, 2003, 50 (03) : 205 - 212
  • [8] Hernandez M., 2008, ACTA MICROSC, V17, P66
  • [9] Comparison of rheological and mechanical behavior of dynamically and statically vulcanized PP/SBS blends
    Ichazo, M
    Hernández, M
    González, J
    Albano, C
    Domínguez, N
    [J]. POLYMER BULLETIN, 2004, 51 (5-6) : 419 - 427
  • [10] Karger-Kocsis J, 1999, PLAST ENGN, V52, P125
12