4.7 Article

Improved thermal stability of phenolic resin by graphene-encapsulated nano-SiO2 hybrids

期刊

JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
卷 135, 期 4, 页码 2377-2387

出版社

SPRINGER
DOI: 10.1007/s10973-018-7325-5

关键词

Graphene; Nanostructures; Synergistic effect; Thermal analysis

资金

  1. Foundation for the Youth Science and Technology Innovation of Beijing Composite Materials Co., Ltd.
  2. Project of Shandong Province Higher Educational Science and Technology Program [J14LA05]

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Phenolic resin (PR) modified with hybrids of reduced graphene oxide (RGO)-encapsulated nano-SiO2 (SiO2-RGO) was prepared by a simple method. The synergistic effect of RGO and nano-SiO2 was achieved in the thermal decomposition of the modified PR. Thermal stability of SiO2-RGO and the modified PR was evaluated by thermogravimetric analysis (TG). With 1 mass% loading of SiO2-RGO, the maximum decomposition temperature (T-dmax) of the modified PR was increased by 32.50 degrees C and the residual mass at 800 degrees C was increased by 6.54%. The structure of the resin char was characterized to study the mechanism of ameliorative thermal stability. SiO2-RGO hybrids were conducive to induce the PR to form graphitized carbon in the pyrolysis process. Thus, SiO2-RGO can facilitate the application of PR in the fields of heat insulation and ablation resistance.

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