Journal
ACS OMEGA
Volume 5, Issue 12, Pages 6725-6737Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsomega.0c00015
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Funding
- China Postdoctoral Science Foundation [2017M611757]
- National Natural Science Foundation of China [51573201]
- Shanghai Science and Technology Talent Planning Project [19QB1402200]
- Capacity Improvement Project for Municipal Universities in Shanghai, Shanghai Science and Technology Commission [19040501800]
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Hollow glass microsphere-reinforced epoxy hollow spheres (HGMS-EHSs) were prepared by a rolling ball method using expanded polystyrene beads, HGMSs, and epoxy resin (EP). The three-phase epoxy syntactic foam (epoxy/HGMS-EHS-HGMS composite) was fabricated by combining HGMS-EHS as a lightweight filler with EP and HGMS by a molding method. The HGMS-EHS and epoxy curing agent systems were well mixed by scanning electron microscopy. Experiments show that higher HGMS-EHS stack volume fraction, lower HGMS-EHS layer number, higher HGMS-EHS diameter, lower HGMS-EHS density, higher HGMS volume fraction, and lower HGMS density result in a decrease in the density of the three-phase epoxy syntactic foam. However, the above factors have the opposite effect on the compressive strength of the three-phase epoxy syntactic foam. Therefore, in order to obtain the high-strength and low-density three-phase epoxy syntactic foam, the influence of various factors should be considered comprehensively to achieve the best balance of compressive strength and density of the three-phase epoxy syntactic foam. This can provide some advice for the preparation of buoyancy materials for deep sea operations.
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