Search

Your search keyword '"Zhang, Yuan-yuan"' showing total 214 results
Start Over Author "Zhang, Yuan-yuan" Publisher elsevier b.v.
214 results on '"Zhang, Yuan-yuan"'

4. Clinical characteristics and risk stratification for late-onset herpes zoster following allogeneic hematopoietic stem cell transplantation

Author

Feng, Cheng-Jie, Zhao, Peng, Fu, Hai-Xia, Yan, Chen-Hua, Wang, Chen-Cong, Zhu, Xiao-Lu, He, Yun, Wang, Feng-Rong, Zhang, Yuan-Yuan, Mo, Xiao-Dong, Kong, Yuan, Han, Wei, Wang, Jing-Zhi, Wang, Yu, Chen, Huan, Chen, Yu-Hong, Zhao, Xiang-Yu, Chang, Ying-Jun, Xu, Lan-Ping, Liu, Kai-Yan, Huang, Xiao-Jun, and Zhang, Xiao-Hui

Published
2024
Full Text
View/download PDF

49. Improved creep resistance of short carbon fiber reinforced polyetherimide composite by solution mixing method.

Author

Liu, Quan-Xiu, Zhang, Yuan-Yuan, Guan, Tao, Guan, Bo-Wen, Mo, Xiao-Long, Li, Yuan-Qing, Fu, Ya-Qin, and Fu, Shao-Yun

Subjects
*STRAINS & stresses (Mechanics), *CREEP (Materials), *FIBROUS composites, *INJECTION molding, *FIBER orientation, *POLYETHYLENEIMINE, *THERMOPLASTIC composites
Abstract

• The solution mixing method notably retains longer fiber lengths and improves the creep resistance of SCF/PEI composites. • The creep behaviors of SCF/PEI composites are experimentally and theoretically investigated. • The effects of fiber length and orientation on creep deformation are quantitatively analyzed. Creep resistance is critical for ensuring the dimensional stability and safe operation of composite components. However, the creep resistance of short fiber reinforced thermoplastic composites has been rarely reported and that of the composites manufactured by conventional extrusion compounding combined with injection molding is kind of low. In this work, in order to address this issue, two short carbon fiber-reinforced polyetherimide (SCF/PEI) composites named respectively as SCF/PEI E and SCF/PEI S are prepared by both conventional extrusion compounding and our newly developed solution mixing method combined with injection molding. The solution mixing method involves the dispersion and mixing of carbon fibers within a PEI solution and allows for the retention of longer fiber lengths. Experimentally, the creep behaviors of the SCF/PEI composites were examined through tensile and flexural creep testing at various stress levels in a wide temperature range. Theoretically, the creep behaviors were characterized by employing the Schapery model and the time–temperature superposition principle (TTSP), and the impact of fiber length retention on creep resistance was quantitatively analyzed using the Fu-Lauke model. The results demonstrate that compared to the SCF/PEI E composite, the SCF/PEI S composite exhibits a higher creep fracture stress level (175 MPa) and a more extensive linear viscoelastic region (0–85 MPa) at room temperature. Furthermore, the SCF/PEI S composite was observed to have a significantly longer secondary creep stage at an elevated temperature of 210 °C. Overall, the creep resistance of the newly manufactured SCF/PEI S is significantly superior to that of the SCF/PEI E , which effectively extends the service life and operational capacity of injection-molded SCF/PEI composites. [ABSTRACT FROM AUTHOR]

Published
2025
Full Text
View/download PDF

Catalog

Books, media, physical & digital resources
See catalog results