High-temperature aging and long-term mechanical properties of polyphenylene sulfide composites for marine use

ABSTRACT

Advanced polymeric composites and manufacturing techniques promote developments of marine structures significantly (e.g., spare parts supply chain of shipbuilding and maintenance). In this paper, the GNP/CF-PPS (graphene nanoplatelets short carbon fibre polyphenylene sulfide composite) samples are prepared by mechanically mixing CF-PPS plastic pellets and GNP particles. The mixed compound is 3D-printed by material extrusion additive manufacturing, and the bending mechanics test is carried out to explore how nanoreinforcement affects the ability of printed composites to perform under high temperature conditions. The results show that CF-PPS and GNP/CF-PPS samples have the highest flexural strength at room temperature. As the temperature rises to 260°C, the stiffness increases by 4.8% and 6.7% respectively, while the deflection decreases by 30.4% and 25.6% respectively. The characterisation results of scanning electron microscopy (SEM) show that the cross-sectional pores of CF-PPS samples after adding GNP are relatively reduced, indicating the improvement in the structural stability.

KEYWORDS:

• PPS composites
• material extrusion additive manufacturing
• graphene nanoplatelets
• high temperature resistance
• bending properties

Disclosure statement

No potential conflict of interest was reported by the author(s).

Data availability

The datasets and numerical results used in the current study are available from the corresponding author upon reasonable request.

Additional information

Funding

This work was supported by the National Natural Science Foundation of China (grant number 52101381), the China Postdoctoral Science Foundation (grant number 2023M730455), the Department of Education of Liaoning Province (grant number LJKMZ20220366), and the Fundamental Research Funds for the Central Universities, Dalian Maritime University (grant number 3132024115).