The effect of moulding process parameters on interlaminar properties of CF/PEEK composite laminates

Abstract

Interlaminar properties are one of the most important indicators of thermoplastic composite quality. A series of laminates with different moulding process parameters were prepared by unidirectional carbon fibre-reinforced polyether ether ketone (CF/PEEK) prepreg to explore the influence of moulding process parameters on the interlaminar properties of CF/PEEK composite laminates. The influence of the three process parameters, moulding pressure, moulding temperature, and holding time on the interlaminar shear strength (ILSS) of [0/90]₈ laminates was studied. The interlaminar shear failure modes of specimens under different moulding process parameters were compared, and the correlation between the ILSS and interlaminar shear failure modes was analysed. The results showed that the appropriate moulding pressure was 2 MPa, the proper moulding temperature range was 400–420°C and the holding time should not be less than 20 min. The main failure modes were tensile or compression when the laminates were moulded using proper process parameters; interlaminar shear failure might also appear in those moulded by non-optimised process parameters.

Keywords

CF/PEEK composite process parameters interlaminar shear strength interlaminar shear failure modes

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References

Marsh

. Composites poised to transform airline economics. Reinf Plast 2013; 57:18–24.

Haanappel

ten Thije

RHW

Sachs

, et al. Formability analyses of uni-directional and textile reinforced thermoplastics. Compos A Appl Sci Manuf 2014; 56: 80–92.

Vaidya

Chawla

. Processing of fibre reinforced thermoplastic composites. Int Mater Rev 2013; 53: 185–218.

Englund

. Recycling of carbon fiber-reinforced thermoplastic composite wastes from the aerospace industry. J Compos Mater 2016; 51: 1265–1273.

Mahieux

. Cost effective manufacturing process of thermoplastic matrix composites for the traditional industry: the example of a carbon-fiber reinforced thermoplastic flywheel. Compos Struct 2001; 52: 517–521.

Zhang

Gao

, et al. Study on mechanical properties of unidirectional continuous carbon fiber-reinforced PEEK composites fabricated by the wrapped yarn method. Polym Compos 2019; 40: 56–69.

Fujihara

Huang

Z-M

Ramakrishna

, et al. Influence of processing conditions on bending property of continuous carbon fiber reinforced PEEK composites. Compos Sci Technol 2004; 64: 2525–2534.

Lessard

Lebrun

Benkaddour

, et al. Influence of process parameters on the thermostamping of a [0/90]₁₂ carbon/polyether ether ketone laminate. Compos A Appl Sci Manuf 2015; 70: 59–68.

McCool

Murphy

Wilson

, et al. Thermoforming carbon fibre-reinforced thermoplastic composites. Proc Inst Mech Eng Pt L J Mater Design Appl 2012; 226: 91–102.

10.

Vieille

Albouy

Chevalier

, et al. About the influence of stamping on thermoplastic-based composites for aeronautical applications. Compos B Eng 2013; 45: 821–834.

11.

Vieille

Albouy

Taleb

. Investigations on stamping of C/PEEK laminates: influence on meso-structure and macroscopic mechanical properties under severe environmental conditions. Compos B Eng 2014; 63: 101–110.

12.

Gao

S-L

Kim

J-K

. Cooling rate influences in carbon fibre/PEEK composites. Part 1. Crystallinity and interface adhesion. Compos A Appl Sci Manuf 2000; 31: 517–530.

13.

Liang

Hamila

Peillon

, et al. Analysis of thermoplastic prepreg bending stiffness during manufacturing and of its influence on wrinkling simulations. Compos A Appl Sci Manuf 2014; 67: 111–122.

14.

Gao

S-L

Kim

J-K

. Correlation among crystalline morphology of PEEK, interface bond strength, and in-plane mechanical properties of carbon/PEEK composites. J Appl Polym Sci 2002; 84: 1155–1167.

15.

Chen

Chung

C-T

. Crystallinity of isothermally and nonisothermally crystallized poly(ether ether ketone) composites. Polym Compos 1998; 19: 689–697.

16.

Picher-Martel

G-P

Levy

Hubert

. Compression molding of carbon/polyether ether ketone composites: squeeze flow behavior of unidirectional and randomly oriented strands. Polym Compos 2017; 38: 1828–1837.

17.

Chen

Zhan

, et al. Effect of cure pressure on microstructure and interlaminar shear strength properties of carbon fiber–reinforced plastics with microwave curing. Adv Polym Sci 2017; 30: 1084–1093.

18.

Zhan

Chen

, et al. The influence of cure pressure on microstructure, temperature field and mechanical properties of advanced polymer-matrix composite laminates. Fiber Polym 2014; 15: 2404–2409.

19.

Chen

Zhan

Huang

, et al. A novel method for curing carbon fiber reinforced plastics by high-pressure microwave. Fiber Polym 2017; 17: 2143–2152.