Silicone rubber ablative composites improved with zirconium carbide or zirconia

被引：102
|
作者：
Yang, Dong [1 ]
Zhang, Wei [1 ]
Jiang, Benzheng [1 ]
Guo, Yang [1 ]
机构：
[1] Natl Univ Def Technol, Coll Aerosp & Mat Engn, Changsha 410073, Hunan, Peoples R China
来源：
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING | 2013年 / 44卷
关键词：
Polymer-matrix composites (PMCs); Mechanical properties; High-temperature properties; Thermal analysis; MECHANICAL-PROPERTIES; THERMAL-STABILITY; CARBON-FIBER; WATER-VAPOR; OXIDATION; ZRC; INSULATION; BEHAVIORS;
D O I：
10.1016/j.compositesa.2012.09.002
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Silicone rubber ablative composites with zirconium carbide (ZrC) or zirconia (ZrO2) were prepared and tested for thermal protection systems. The incorporation of ZrC or ZrO2 powders increased the tensile strength but reduced the elongation at break of the composites. The thermal stabilities of the composites were enhanced by adding ZrC or ZrO2. The ceramic layers containing ZrO2, SiO2 and SiC were formed on the ablated surface of the composites with ZrO2 or ZrC, and acted as effective oxygen and heat barriers. The ablated surface of the composite with ZrO2 was more uniform than that of the composite with ZrC in the experiment. The linear ablation rates of the composites were reduced by 40% and 72% by the incorporation of 40 phr ZrC and ZrO2, respectively. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：70 / 77
页数：8
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