Surface Modification of Nano-Al2O3 with Silane Coupling Agent and Its Effect on the Compressive Strength of PI/Al2O3 Composites
Source abstract
Abstract
In this study, a series of nano-Al2O3 reinforced polyimide (PI) composites were fabricated using the hot compression method. A silane coupling agent was used to modify the surface of nano-Al2O3 powder to enhance the PI/Al2O3 interface compatibility. The effects of Al2O3 contents on the microstructures, thermal behavior and mechanical properties of PI/Al2O3 composites were investigated. The results suggested that chemical reactions occurred during in situ modification. The nano-Al2O3 was cross-linked to the PI matrix, which reduced the mobility of PI chains and improved the elastic modulus of the composites. When the Al2O3 content was 30 wt.%, the compressive strength of composites reached the maximum value of 313 MPa and increased by 26.5% than that of the PI matrix.
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Research context
OpenAlex topics: Tribology and Wear Analysis · Synthesis and properties of polymers · Polymer Nanocomposites and Properties
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
State Key Laboratory for Mechanical Behavior of Materials, Xi’an Jiaotong University, Xi’an 710049, China
China United Gas Turbine Technology Co., Ltd., Beijing 102209, China
National Key Lab for Remanufacturing, Army Academy of Armored Forces, Beijing 100072, China
School of Materials Engineering, Xi’an Aeronautical University, Xi’an 710077, China
Funding
National Natural Science Foundation of China · Aviation Science Foundation of China
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