Abstract:In this study, microcellular injection molding with supercritical nitrogen was employed to fabricate polyetheretherketone (PEEK) foams. The results showed that microporous PEEK specimens with weight loss up to 22% (specific strength of 58.16) and a low dielectric constant of 2.29 were achieved successfully. It is demonstrated that the microcellular structures and distribution varied with filling distance, due to the variation of pressure and temperature of melt in the mold cavity. Moreover, the low‐temperature… Show more
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