期刊
POLYMER JOURNAL
卷 40, 期 12, 页码 1121-1131出版社
NATURE PUBLISHING GROUP
DOI: 10.1295/polymj.PJ2008072
关键词
Thermoset; Ring-Opening Polymerization; Thermal Properties; Toughness; Polymer Alloy; Organic-Inorganic Hybrid; Nanocomposite
Polybenzoxazines that can be obtained by the thermally induced ring-opening polymerization of cyclic benzoxazine monomers are expected as a novel type of phenolic resins. Various benzoxazine monomers are easily synthesized from mono- or diamines, mono- or bisphenols, and formaldehyde. Polybenzoxazines have not only the advantageous properties of the traditional phenolic resins Such as the high thermal properties, but also other properties that are not found in the traditional phenolic resins such as the molecular design flexibility, and excellent dimensional stability. The disadvantages of the typical polybenzoxazines are high temperature needed for the cure and brittleness of the cured materials. Further enhancement of thermal properties is also expected for the applications in harsh conditions. Herein, we report on our various approaches for performance enhancement of the polybenzoxazine, including the designs of novel monomers, high molecular weight polymeric precursors, polymer alloys, and hybrids with inorganics.
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