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Tribological and AO irradiation resistant properties of 3D printing polyimide-POSS composites

2023; Elsevier BV; Volume: 192; Linguagem: Inglês

10.1016/j.triboint.2023.109241

1879-2464

Xinle Yao, Yanzhao He, Yuxiong Guo, Zhongying Ji, Chufeng Sun, Xin Jia, Xiaolong Wang, Feng Zhou,

Additive Manufacturing and 3D Printing Technologies

To address the requirements of polyimide (PI) parts in the harsh Low Earth Orbit (LEO), a 3D printable PI composite with superior tribological and atomic oxygen (AO) irradiation resistant properties was proposed by employing methacryloxypropyl polyhedral oligomeric silsesquioxane (MPA-POSS) as a crosslinking agent in the photosensitive PI inks to obtain POSS-contained PI composite (PI-POSS composite). The resultant PI-POSS exhibits unique comprehensive performance including excellent AO irradiation resistance of an erosion yield of 2.86 × 10−24 cm3/atom, 50 % lower than that of PI without POSS, and anti-wear and friction reducing properties with a coefficient of friction of 0.1 and a wear rate of 4.4 × 10−6 mm3/N∙m. Importantly, the PI-POSS inks have excellent VP 3D printability, enabling the creation of complex, AO irradiation resistant, self-lubricating PI-POSS parts. These findings highlights the significant potential of such PI-POSS composite in aerospace applications within LEO.