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Air Templated Macroporous Epoxy Foams with Silica Particles as Property-Defining Additive.

ABSTRACT: Nonaqueous foams were successfully produced by mechanically beating air into liquid epoxy resin, surfactant, and silica particle mixtures and used as templates to produce macroporous polymers. The air bubbles introduced into the epoxy formulations served as templates for the pores of the cured epoxy foams. The addition of silica particles into the resin mixture resulted in an increased viscosity of the formulation, thus enhancing the stability of the liquid epoxy froths, which could then be thermally cured at 60 °C. Increasing the silica loading in the formulation resulted in an increase of the foam density and decrease of the average pore size of the epoxy foams. The epoxy foams containing silica exhibited a hierarchical pore structure, where large pores were surrounded by smaller pores, and enhanced stiffness as compared to the control epoxy foams with a monomodal pore size distribution.

SUBMITTER: Jalalian M

PROVIDER: S-EPMC6433170 | biostudies-literature | 2019 Mar

REPOSITORIES: biostudies-literature

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Air Templated Macroporous Epoxy Foams with Silica Particles as Property-Defining Additive.

Jalalian Mohammad M Jiang Qixiang Q Bismarck Alexander A

ACS applied polymer materials 20190128 3

Nonaqueous foams were successfully produced by mechanically beating air into liquid epoxy resin, surfactant, and silica particle mixtures and used as templates to produce macroporous polymers. The air bubbles introduced into the epoxy formulations served as templates for the pores of the cured epoxy foams. The addition of silica particles into the resin mixture resulted in an increased viscosity of the formulation, thus enhancing the stability of the liquid epoxy froths, which could then be ther ...[more]

PMID: 30923797

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