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Preparation and characterization of POSS‐SiO 2 /cyanate ester composites with high performance
Author(s) -
Zhang Mengmeng,
Yan Hongxia,
Liu Chao,
Zhang Junping
Publication year - 2015
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.23091
Subject(s) - materials science , cyanate ester , composite material , curing (chemistry) , silsesquioxane , differential scanning calorimetry , thermal stability , scanning electron microscope , dielectric , flexural strength , heat deflection temperature , fourier transform infrared spectroscopy , epoxy , izod impact strength test , polymer , chemical engineering , ultimate tensile strength , physics , optoelectronics , thermodynamics , engineering
In this article, a hybrid filler based on polyhedral oligomeric silsesquioxane and silica, coded as POSS‐SiO 2 , has been successfully synthesized. The structure of POSS‐SiO 2 was studied by Fourier‐transform infrared spectra, X‐ray diffraction, and scanning electron microscopy. Then the POSS‐SiO 2 was compounded with dicyclopentadiene bisphenol dicyanate ester (DCPDCE) resin to prepare composites. The effects of POSS‐SiO 2 on the curing reaction, mechanical, thermal, dielectric and tribological properties of DCPDCE resin were investigated systematically. Results of differential scanning calorimetry show that the addition of POSS‐SiO 2 can facilitate the curing reaction of DCPDCE and decrease the curing temperature of DCPDCE. Compared with pure DCPDCE resin, the impact and flexural strengths of the composites materials are improved markedly with up to 72 and 52% increasing magnitude, respectively. Meanwhile, the POSS‐SiO 2 /DCPDCE systems exhibit lower dielectric constant and loss than pure DCPDCE resin over the testing frequency from 10 to 60 MHz. In addition, the thermal stability and tribological properties of POSS‐SiO 2 /DCPDCE composites are also superior to that of pure DCPDCE resin. POLYM. COMPOS., 36:1840–1848, 2015. © 2014 Society of Plastics Engineers