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Dynamic viscoelasticity behaviors of magnesium dimethacrylate/natural rubber composites with different cure extent
Author(s) -
Xu Chuanhui,
Chen Yukun,
Cao Liming,
Zeng Xingrong
Publication year - 2012
Publication title -
polymer composites
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.577
H-Index - 82
eISSN - 1548-0569
pISSN - 0272-8397
DOI - 10.1002/pc.22246
Subject(s) - materials science , composite material , viscoelasticity , natural rubber , curing (chemistry) , filler (materials) , composite number , vulcanization , magnesium , polymerization , polymer , metallurgy
In this article, the dynamic viscoelasticity characteristics of the natural rubber (NR)/magnesium dimethacrylate (MDMA) composites with different cure extent are investigated using a Rubber Process Analyzer 2000 (RPA2000). A weak filler–filler network of MDMA is formed in the uncured compounds. MDMA polymerize during peroxide curing and change to the polymerized MDMA (PMDMA), which can aggregate to form strong filler network in the lightly cured composite. The ionic crosslinks and NR crosslinks influence the dynamic viscoelasticity characteristics of the MDMA/NR composites with different cure extent significantly. Although the PMDMA aggregates have strong attraction with each other to form filler network, the ionic crosslinks are not favorable to rebuild the PMDMA network when the NR crosslink network is mature. Finally, the torque verifies that the ionic crosslinks can be influenced by small strain magnitudes (<0.1°) whereas the NR crosslink network is not influenced. POLYM. COMPOS., 2012. © 2012 Society of Plastics Engineers