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http://dx.doi.org/10.12989/amr.2014.3.1.259

Preparation and characterization of boron-nitrogen coordination phenol resin/SiO2 nanocomposites  

Gao, J.G. (College of Chemistry & Environment Science, Hebei University)
Zhai, D. (College of Chemistry & Environment Science, Hebei University)
Wu, W.H. (College of Chemistry & Environment Science, Hebei University)
Publication Information
Advances in materials Research / v.3, no.1, 2014 , pp. 259-269 More about this Journal
Abstract
The boron-nitrogen-containing phenol-formaldehyde resin (BNPFR)/$SiO_2$ nanocomposites (BNPFR/$SiO_2$) were synthesized in-situ, and structure of BNPFR/$SiO_2$ nanocomposites was characterized by FTIR, XRD and TEM. The loss modulus peak temperature $T_p$ of BNPFR/$SiO_2$ nanocomposites cured with different nano-$SiO_2$ content are determined by torsional braid analysis (TBA). The thermal degradation kinetics was investigated by thermogravimetric analysis (TGA). The results show that nano-$SiO_2$ particulate with about 50 nm diameter has a more uniformly distribution in the samples. The loss modulus peak temperature $T_p$ of BNPFR/$SiO_2$ nanocomposite is $214^{\circ}C$ when nano-$SiO_2$ content is 6 wt%. The start thermal degradation temperature $T_{di}$ is higher about $30^{\circ}C$ than pure BNPFR. The residual rate (%) of nanocomposites at $800^{\circ}C$ is above 40 % when nano-$SiO_2$ content is 9 %. The thermal degradation process is multistage decomposition and following first order.
Keywords
boron-nitrogen-coordination; phenol-formaldehyde resin; nanocomposites; nano-SiO2; thermal analysis;
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