Processing and mechanical properties evaluation of glass fiber-reinforced PTFE laminates |
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| Authors: | C Riul V Tita J de Carvalho RB Canto |
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| Affiliation: | 1. Department of Mechanical Engineering, School Engineering of São Carlos (EESC), University of São Paulo (USP), Av. Trabalhador São Carlense, 400, 13566-590 São Carlos, SP, Brazil;2. Department of Aeronautical Engineering, School Engineering of São Carlos (EESC), University of São Paulo (USP), Av. Trabalhador São Carlense, 400, 13566-590 São Carlos, SP, Brazil;3. Department of Materials Engineering – DEMa, Federal University of São Carlos (UFSCar), Rodovia Washington Luís, km 235, 13565-905 São Carlos, SP, Brazil |
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| Abstract: | A specific manufacturing process to obtain continuous glass fiber-reinforced PTFE laminates was studied and some of their mechanical properties were evaluated. Young’s modulus and maximum strength were measured by three-point bending test and tensile test using the Digital Image Correlation (DIC) technique. Adhesion tests, thermal analysis and microscopy were used to evaluate the fiber–matrix adhesion, which is very dependent on the sintering time. The composite material obtained had a Young’s modulus of 14.2 GPa and ultimate strength of 165 MPa, which corresponds to approximately 24 times the modulus and six times the ultimate strength of pure PTFE. These results show that the PTFE composite, manufactured under specific conditions, has great potential to provide structural parts with a performance suitable for application in structural components. |
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| Keywords: | A Structural composites A Polymer&ndash matrix composites (PMCs) B Mechanical properties E Sintering E Heat treatment |
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