CERAMICS INTERNATIONAL
·
2025
·
IF 5.6
Guoqin Jiang,Zongyi Deng,Minxian Shi,Wei Zhang,Yang Liu,Wenjing Cao,Linqin Gao,Yanbin Wang,Zhixiong Huang
Carbon fiber/phenolic resin (CF/Ph) composites are widely used as outer surface thermal protection materials in hypersonic vehicles because of their excellent ablation resistance. As the flight speed of the vehicle increases, the problem of CF being prone to oxidation in high-temperature aerobic environments becomes more severe, hindering the adaptation of CF/Ph to more extreme service environments. In this study, ZrSi 2 -B 4 C was introduced into carbon fibre/boron phenolic resin (CF/BPR) to improve its ablation resistance. At 2.4 MW/m 2 , the linear ablation rate (LAR) and mass ablation rate (MAR) of the composites were as low as −0.032 mm/s and 0.0186 g/s, respectively. At 3.6 MW/m 2 , the LAR and MAR were as low as −0.005 mm/s and 0.0273 g/s, respectively. These findings indicate that the ceramizable composites exhibit excellent ablation resistance under both low and high heat flux conditions. The ablation mechanism of the composites was revealed. The in situ ceramization of ZrSi 2 and B 4 C formed a Zr-Si-B-C-O ceramic layer, which hindered the thermal oxidation and aerodynamic erosion of CF and PyC.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
POLYMER TESTING
·
2023
·
IF 5.1
Di Zhu,Minxian Shi,Zhixiong Huang,Yan Qin,Huadong Fu,Zongyi Deng
Phenolic resin-based ablative materials have gained significant attention in the aerospace sector in recent years. In this study, TGA-DSC, FT-IR, XRD and XPS were employed to the thermal stability and phase transformation of the ZrSi 2 –B 4 C modified quartz fiber/boron containing phenolic resin (QF/BPR) composite. The compressive failure behavior of the composite at 600–1200 °C was studied through SEM and high-speed camera techniques. The results indicated that the compression strength of the composite decreased to a minimum at 600 °C and increased at 800–1200 °C. The composite exhibited different failure modes at different temperature: shear fracture at room temperature (RT), debonding of the fiber bundles at 600 °C, fiber buckling and fiber shear fracture at 800 °C, fiber buckling and delamination at 1000–1200 °C. The improvement in thermal stability of composite was primarily attributed to the formation of ZrO 2 , SiO 2 and B 2 O 3 , which covered the fiber and effectively transmitted the load, leading to an enhanced strength of the interface between the fiber and resin.
研究领域:
材料科学
·
航空航天工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
·
2022
·Vol. 148
·期 3
·789-805
·
IF 4.755
Zhu Di,Huang Zhixiong,Shi Minxian,Qin Yan,Zou Zhenyue,Deng Zongyi
BPR has been widely used as ablative material for thermal protection on aircraft surface. In this study, model-free method was employed to study the kinetic models of BPR and ZrSi 2 /B 4 C-Ph composite. In addition, the thermal stability, chemical reaction and structure evolution during pyrolysis of ZrSi 2 /B 4 C-Ph composite were characterized by TGA, XRD, XPS, GC–MS and TG-MS. The results indicated that the pyrolysis of BPR includes three consecutive and overlapping stages. And the kinetic mechanism function f(α) , apparent activation energy E a and pre-exponential factor A of each stage were confirmed. Besides, the high char yield of ZrSi 2 /B 4 C-Ph composite is mainly attributed to the reaction of ZrSi 2 and B 4 C with gases released during BPR pyrolysis, which formed solid phases such as amorphous carbon, ZrO 2 , SiO 2 and B 2 O 3 .
研究领域:
材料科学
·
化学工程
✓ 已验证
产品关联
DOI
高影响因子
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
·
2022
·
IF 6.364
Cunku Wang,Jie Ding,Zhixiong Huang,Yingluo Zhuang,Yan Li,Minxian Shi,Yan Qin
In this work, two ceramizable phenolic adhesives were prepared using ZrSi 2 particles or ZrSi 2 /B 4 C mix particles as the inorganic fillers. The thermal stability, bonding strength , microstructure and phase composition of the adhesives were investigated by TGA , shear strength of Al 2 O 3 joints, SEM, EDS , XRD and XPS . The results show that these two adhesives have different bonding performances and ceramicization evolutions above 600 °C in air due to the addition of the second phase particles B 4 C. The bonding strength of ZrSi 2 /B 4 C modified phenolic adhesive after treatment at 1200 ℃ can be as high as 36.6 MPa, while the bonding strength of ZrSi 2 modified phenolic adhesive under the same conditions is only 17.5 MPa. B 4 C undergoes oxidation reaction before ZrSi 2 , and the oxidation product B 2 O 3 liquid phase not only reacts with ZrSi 2 to form oxidation-resistant ZrB 2 , but also can dissolve the high temperatures defects of the adhesive and chemically bond with the Al 2 O 3 substrates at the interface.
研究领域:
材料科学
·
胶粘技术
·
热工程
·
表面科学
✓ 已验证
产品关联
DOI
高影响因子
危险品化学品经营许可证（带存储）