期刊
REACTIVE & FUNCTIONAL POLYMERS
卷 71, 期 8, 页码 899-904出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.reactfunctpolym.2011.05.005
关键词
Poly(dimethylsilyleneethynylenephenyleneethynylene); Decaborane; o-Carborane-containing polymer; Thermal stability; Thermooxidative stability
资金
- National Research Program of China [xx20303]
- Shanghai Leading Academic Discipline Projects [B502]
Carborane-containing poly(dimethylsilyleneethynylenephenyleneethynylene) (CB-PSEPE) with o-carborane in main chains was prepared by a coupling reaction between poly(dimethylsilyleneethynylenephenyleneethynylene) (PSEPE) and decaborane (B(10)H(14)) in the presence of acetonitrile (CH(3)CN). The chemical structures of CB-PSEPE were determined by infrared (IR) and nuclear magnetic resonance (NMR) spectroscopies. The glass transition temperature (T(g)) and thermal curing behavior of CB-PSEPE were evaluated with differential scanning calorimetry (DSC). The thermal and thermooxidative stabilities were examined by thermogravimetric analysis (TGA). The results show that CB-PSEPE polymer could be converted into a thermoset below 250 degrees C. The thermoset exhibits excellent heat resistance especially under air atmosphere. The residue yield at 800 degrees C arrives at 95.8% for CB-PSEPE thermoset in air. When the thermoset was oxidized at 800 degrees C for 1 h in air, a protective layer would be formed on the surface of the oxidized product according to scanning electron microscopy (SEM) observations. (C) 2011 Elsevier Ltd. All rights reserved.
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