摘要
采用复合分散工艺将纳米TiO_2均匀分散于环氧树脂中,制备了环氧-纳米TiO_2树脂浇铸体,并采用湿法缠绕工艺制备了T700碳纤维增强环氧复合材料(C_f/E)以及T700碳纤维增强环氧-纳米TiO_2(C_f/ETiO_2)复合材料NOL环与Φ150 mm容器,研究了纳米TiO_2对环氧树脂浇铸体、复合材料NOL环和Φ150 mm容器性能的影响。结果表明,纳米TiO_2的加入对环氧基体和C_f/E复合材料均有不同程度的增强、增韧效果,其中环氧基体的拉伸强度提高了9.2%,弯曲强度提高了9.8%,冲击强度提高了52.9%;C_f/E-TiO_2复合材料NOL环层剪强度达到87.7 MPa,提高了22.3%;Φ150 mm容器特性系数达到43.4 km,纤维强度发挥率达到94.3%,分别提高了9.9%和3.3%。
Nano-TiO2 was dispersed uniformly in epoxy resin by the mixed process and epoxy/nano-TiO2 resin were manufactured by casting process. The NOL rings and Φ150 mm standard pressure vessels of T700 carbon fiber/ep-oxy and T700 carbon fiber/epoxy/nano-TiO2 composites were manufactured by wet-winding. The nano-TiO2effect on the properties of epoxy casting resins and T＇/00 carbon fiber/epoxy composites were also studied. The results show that the addition of nano-TiOEiS reinforced differently on epoxy resins and T700 carbon fiber）epoxy composites. Comparing with the epoxy without nano-Ti02, its tension strength and flexural strength of epoxy/nano-TiO2 system are increased respec- tively 9.2% and 9.8%. The interlaminar shear strength of T700 carbon fiber/epoxy/nano-TiO2 NOL rings reached 87. 7 MPa, increasing 22.3%. The vessel performance factor of Φ150 mm pressure vessels are 43.4 km, and the strength transfer rate of T700 carbon fiber is 94.3%. Comparing with the composites without nano-TiO2, its vessel performance factor and strength transfer rate of T700 carbon fiber are increased respectively 9.9% and 3.3%.
出处
《宇航材料工艺》
CAS
CSCD
北大核心
2015年第3期39-41,共3页
Aerospace Materials & Technology
