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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Influence of crystallinity on interlaminar fracture toughness and impact properties of polyphenylene sulfide/carbon fiber laminates

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Author(s):
Batista, Natassia Lona [1] ; Anagnostopoulos, Konstantinos [2] ; Botelho, Edson Cocchieri [1, 2] ; Kim, Hyonny [2]
Total Authors: 4
Affiliation:
[1] Sao Paulo State Univ UNESP, Mat & Technol Dept, Guaratingueta - Brazil
[2] Univ Calif San Diego, Dept Struct Engn, San Diego, CA 92103 - USA
Total Affiliations: 2
Document type: Journal article
Source: ENGINEERING FAILURE ANALYSIS; v. 119, JAN 2021.
Web of Science Citations: 0
Abstract

The crystallization behavior of thermoplastic matrix is considered as an important property which can highly affect for the mechanical and thermal properties of laminated composite structures. This manuscript aims to evaluate the influence of different degrees of crystallinity induced in polyphenylene sulfide (PPS) / carbon fiber laminates, processed by hot compression molding. In the present study, the morphology, thermal and mechanical properties (compression, interlaminar shear stress, impact and end notch flexure) of the processed laminates were evaluated. From the mechanical testing results obtained, an increase in the in plane compressive and interlaminar shear strengths respectively, as well as impact resistance is observed for composite coupons processed with lower cooling rates. Based on end-notch flexure (ENF) tests, the mode-II fracture toughness is also strongly dependent on the degree of crystallinity of the thermoplastic matrix, as lower cooling rates yield stronger interfacial bonds. In this way, the present study demonstrates that the mechanical properties of thermoplastic laminates can be optimized by taking into account the matrix cooling rate during processing cycle. (AU)

FAPESP's process: 17/16970-0 - Obtaining and Characterization of Nanostructured Thermoplastic Composites for Aeronautical Application
Grantee:Edson Cocchieri Botelho
Support Opportunities: Regular Research Grants
FAPESP's process: 09/06335-9 - Processing and characterization of polymeric composites with carbon nanotubes with aerospace application
Grantee:Edson Cocchieri Botelho
Support Opportunities: Scholarships abroad - New Frontiers