Premium
Damping Properties of Polyorganosiloxane/Poly(methyl methacrylate) Interpenetrating Networks
Author(s) -
Wu Shuizhu,
Yao Shenglan,
Huang Zhanzhao,
Xi Hongyuan,
Shen Jiarui
Publication year - 2002
Publication title -
macromolecular materials and engineering
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.913
H-Index - 96
eISSN - 1439-2054
pISSN - 1438-7492
DOI - 10.1002/1439-2054(20020401)287:4<231::aid-mame231>3.0.co;2-2
Subject(s) - materials science , methyl methacrylate , interpenetrating polymer network , poly(methyl methacrylate) , methacrylate , glass transition , ultimate tensile strength , composite material , polymer , shore durometer , polymerization , polymer chemistry , dynamic mechanical analysis
Interpenetrating polymer networks (IPNs) based on polyorganosiloxane/poly(methyl methacrylate) were prepared via sequential polymerization and the damping and mechanical properties of these materials were studied. The effects of crosslinking in both the first‐ and second‐formed networks were investigated. The experimental results show that the extent of damping of the IPNs was decreased and shifted to higher temperature as the content of poly(methyl methacrylate) was increased; the mechanical properties such as tensile strength and hardness (Shore A) were increased with increasing poly(methyl methacrylate) (PMMA) content. The loss factor peak becomes narrower with increasing crosslinker level in the first‐formed network (polysiloxane network), while increasing crosslinker content in the second‐formed network (PMMA network) results in a broadening of the IPN transition peak and moves the IPN transition to higher temperatures as well.