期刊
MATERIALS & DESIGN
卷 71, 期 -, 页码 48-55出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.matdes.2015.02.001
关键词
Polymer-matrix composites (PMCs); Particle-reinforced composites; Phthalonitrile; Mechanical properties; Thermal properties
资金
- National Natural Science Foundation of China [50973022]
- Specialized Research Funds for the Doctoral Program of Higher Education [20122304110019]
- Fundamental Research Funds for the Central Universities [HEUCFT1009]
- open fund of Key Laboratory of Superlight Material and Surface Technology of Ministry of Education, Harbin Engineering University
A new type of composite based on phthalonitrile resin reinforced with silicon carbide (SiC) microparticles was prepared. For various weight ratios ranging between 0% and 20%, the effect of the micro-SiC particles on the mechanical and thermal properties has been studied. Results from thermal analysis revealed that the starting decomposition temperature and the residual weight were significantly improved upon adding the reinforcing phase. At the maximum micro-SiC loading, dynamic mechanical analysis (DMA) showed an important enhancement in both the storage modulus and glass transition temperature (T-g), reaching 3.1 GPa and 338 degrees C, respectively. The flexural strength and modulus as well as the microhardness were significantly enhanced by adding the microfillers. Tensile test revealed enhancements in the composites toughness upon adding the microparticles. Polarization optical microscope (POM) and scanning electron microscope (SEM) analysis confirmed that mechanical and thermal properties improvements are essentially attributed to the good dispersion and adhesion between the particles and the resin. (C) 2015 Elsevier Ltd. All rights reserved.
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