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Abstract

This article presents a robust resin transfer molding (RTM) process window of a phenylethynyl terminated imide (PETI) oligomer with melt viscosity lower than 1 Pa s over 15 min and 10 Pa s for 2 h at 280 C. Curing occurs rapidly only above 350 C. Curing should be over 30 min at 370 C. Molding optimization reduces the melt viscosity. The oligomer is heated rapidly from 265 to 280 C for the minimum viscosity being lower. The melt is further heated for easier flow in injection and early permeation. The mechanical properties of the prepared composite remain almost constant up to 280 C, facilitating the fabrication of large, complex, high-quality aerospace parts.

Keywords

imide oligomer polymer-matrix composites curing resin transfer molding

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References

Smith, J. G. , Connell, J. W. and Hergenrother, P. M. (2000). The Effect of Phenylethynyl Terminated Imide Oligomer Molecular Weight on the Properties of Composites , Journal of Composite Materials, 34(7): 614-628 .

Connell, J. W. , Smith, J. G. and Hergenrother, P. M. Jr. (2003). High Temperature Transfer Molding Resins: Laminated Properties of PETI-298 and PETI-330 , High Performance Polymers, 15(4): 375-394 .

Connell, J. W. , Smith, J. S. , Hergenrother, P. M. Jr. and Criss, J. M. (2004). High Temperature Transfer Molding Resins: Preliminary Composites of PETI-375 , In: SAMPE 2004 Symposium &! Exhibition, Long Beach, CA, pp. 16-22 .

Criss, J. M. , Arendt, C. P. , Connell, J. W. , Smith, J. G. and Hergenrother, P. M. Jr. (2000). Resin Transfer Molding and Resin Infusion Fabrication of High Temperature Composites , SAMPE Journal, 36(3): 32-41 .

Yokota, R. , Yamamoto, S. , Yano, S. and Sawaguchi, T. et al. (2001). Molecular Design of Heat Resistant Polyimides having Excellent Processability and High Glass Transition Temperature , High Performance Polymers, 3(2): S61-S72 .

Ogasawara, T. , Ishikawa, T. and Yokota, R. et al. (2003). Processing and Properties of Carbon Fiber Reinforced Triple-A Polyimide (Tri-A PI) Matrix Composites , Advance of Composite Materials, 11(3): 277-286 .

Smith, J. G. Jr. , Connell, J. W. and Hergenrother, P. M. (2002). Resin Transfer Moldable Phenylethynyl Containing Imide Oligomers , Journal of Composite Materials, 36(19): 2255-2265 .

Optimization of Liquid Molding Cycle for a Phenylethynyl Terminated Polyimide Composite

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