Effect of molding methods on properties of high HGMS volume fraction solid buoyant materials

doi:10.19936/j.cnki.2096-8000.20221228.010

Abstract

Abstract: With epoxy resin E-4221 as matrix and hollow glass microsphere (HGMS) as filling material, composites with high HGMS volume fraction were prepared by molding, extrusion and vacuum tamping, respectively. The effects of forming methods on the density, compressive strength and water absorption of composites under different hydrostatic pressures were studied, and the application scope of different forming methods was determined. The results show that extrusion molding and vacuum tamping molding are suitable for the preparation of solid buoyant materials with high volume fraction of HGMS. Solid buoyant materials with density no less than 0.62 g/cm³ and safe use depth no less than 8 000 m can be obtained by extrusion molding method. The vacuum tamping method can obtain solid buoyant materials with a density of less than 0.57 g/cm³ and a safe use depth of 4 000 m.

Key words: solid buoyant materials, epoxy resins, hollow glass microsphere, extrusion molding process

CLC Number:

TB332

HUANG Wei, YI Ya-dong, WU Ping-wei, DAI Jin-hui. Effect of molding methods on properties of high HGMS volume fraction solid buoyant materials[J]. COMPOSITES SCIENCE AND ENGINEERING, 2022, 0(12): 75-78.

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