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Method of preparation of cardo polyetherketone (PEK-C) structural foam material
A method of preparation of a cardo polyetherketone structural foam material, including the following steps: 1) performing a mould pressing on a cardo polyetherketone resin by a high-temperature vulcanizing machine to prepare a foaming billet; 2) placing the foaming billet in a foaming cavity of a mould-pressing machine, performing a penetration and a swelling by introducing a supercritical fluid to achieve diffusion equilibrium, forming a polymer-supercritical fluid homogeneous solution, and 3) making the polymer-supercritical fluid homogeneous solution supersaturated through a sudden release of the inner pressure of the system, thereby inducing nucleation and foaming, and finally forming a structural foam having a closed pore structure with a uniform pore size and an adjustable pore density. The production process of the present invention is clean, environmentally friendly, and has relatively high efficiency. The obtained structural foam has good mechanical properties.
CHANG CHUN INSTITUTE OF APPLIED CHEMISTRY CHINESE ACADEMY OF SCIENCES JIANGSU SINC-TECH POLYMERIZATION NEW MATERIALS INDUSTRY TECHNOLOGY RESEARCH INSTITUTE
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B29C C08G B29C B29K C08J B29C C08J C08J C08J C08J B29C C08J C08J B29C C08L C08J B29B
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Honghua Guangyuan Wei
Wang Zhou Li