Antioxidant modification of C/C composites by in situ hydrothermally synthesized 4ZnO•B2O3•H2O

被引：0
|
作者：
Yang, Liu-Qing [1 ]
Huang, Jian-Feng [1 ,2 ]
Li, He-Jun [2 ]
Cao, Li-Yun [1 ]
Fei, Jie [1 ]
Ouyang, Hai-Bo [1 ]
Wu, Jian-Peng [1 ]
Hao, Wei [1 ]
机构：
[1] Shaanxi Univ Sci & Technol, Sch Mat Sci & Engn, Xian 710021, Peoples R China
[2] Northwestern Polytech Univ, State Key Lab Solidificat Proc, Xian 710021, Peoples R China
来源：
SCIENCE AND ENGINEERING OF COMPOSITE MATERIALS | 2015年 / 22卷 / 04期
基金：
中国国家自然科学基金;
关键词：
antioxidant modification; C/C composites; hydrothermal treatment; zinc borate; FLAME-RETARDANT PROPERTIES; CARBON/CARBON COMPOSITES; CONTROLLABLE SYNTHESIS; OXIDATION RESISTANCE; ZINC BORATE; MICROSTRUCTURE; PROPERTY; BEHAVIOR; HA;
D O I：
10.1515/secm-2013-0220
中图分类号：
TB33 [复合材料];
学科分类号：
摘要：
Antioxidant modification of carbon/carbon (C/C) composites by in situ hydrothermally synthesized 4ZnO center dot B2O3 center dot H2O was successfully achieved. Samples were characterized by X-ray diffraction, scanning electron microscopy, isothermal oxidation test and thermogravimetry/differential scanning calorimetry. The influence of hydrothermal temperature on the phase composition and microstructure of as-prepared 4ZnO center dot B2O3 center dot H2O, and the antioxidant modification of C/C composites were investigated. Results showed that 4ZnO center dot B2O3 center dot H2O crystallite coating was achieved on the surface of C/C composites at the hydrothermal temperature range of 100-180 degrees C. A smooth and crack-free 4ZnO center dot B2O3 center dot H2O layer was obtained when the hydrothermal temperature reached 140 degrees C. The isothermal oxidation test showed that the oxidation resistance of C/C composites was improved. The as-modified composites exhibited a weight loss of only 1.93 g/cm(3) after oxidation at 600 degrees C for 15 h, while the non-modified one had a weight loss of 5.20 g/cm(3) after only 10 h of oxidation.
引用
收藏
页码：433 / 439
页数：7
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