InfluenceofZrB2NanoparticlesontheMechanicalandThermalBehaviorsofCarbonNanotubeReinforcedResolComposite

被引：0

作者：

Zahra Amirsardari ^{[1
]}

Rouhollah MehdinavazAghdam ^{[2
]}

Masoud SalavatiNiasari ^{[1
]}

Mohammad Reza Jahannama ^{[2
]}

机构：

[1] Institute of Nano Science and Nano Technology, University of Kashan

[2] Department of Nanotechnology, Space Transportation Research Institute, Iranian Space Research Center

来源：

Journal of Materials Science & Technology | 2016年 / 32卷 / 07期

关键词：

Multiwalled carbon nanotubes(MWCNTs); Zirconium diboride nanoparticles(ZrB2); Carbon/phenolic composite; Thermal stability; Ablation performance;

D O I：

暂无

中图分类号：

TB33 [复合材料];

学科分类号：

0805 ; 080502 ;

摘要：

The present study focuses on the thermal response of carbon ?ber-reinforced phenolic composites, where the matrix has been modi?ed with different reinforcements. Two types of materials, multiwalled carbon nanotubes and zirconium diboride（ZrB2）, were used in a new design of mixture to produce the heatresistant ablative composite system. The CNT/ZrB2/carbon/phenolic nanocomposite（Z/NT-CR） system corresponding to CNT/carbon/phenolic nanocomposite（NT-CR） showed a reasonable decrease in mass loss and the ablation rate as compared to carbon/phenolic composite（CR）. However, substantial drop in two factors was found for Z/NT-CR as compared to carbon/phenolic and NT-CR. Ablation mechanisms for all three composites were investigated by thermal gravimetric analysis in conjunction with microstructural studies using a ?eld emission scanning electron microscope. The microstructural studies revealed that CNTs acted as an ablation resistant phase for protection against 2000 °C, and the conversion from ZrB2 to Zr O2 played an important role as an insulator in the performance of char layer in the ablation resistance.

引用

页码：611 / 616

页数：6

共 23 条

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