Hygrothermal studies on syntactic foams and compressive strength determination

Gupta, Nïkhil; Woldesenbet, Eyassu

doi:10.1016/s0263-8223(03)00060-6

Cited by 141 publications

(72 citation statements)

References 21 publications

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“…One phase foam is mainly the polymer foam such as PS foam, PU foam, phenolic foam, but the foams have limitations because of their low compressive strength [2][3][4][5][6][7]. In order to overcome this problem, a class of closed cell syntactic foams were introduced by dispersing rigid hollow particles in a matrix material [8][9][10]. A two phase buoyancy foam consists of hollow spheres dispersed in a matrix resin whereas a three phase buoyancy foam consists of hollow spheres dispersed in a matrix resin containing gaseous voids or other kind hollow spheres [11][12][13][14].…”

Section: Introductionmentioning

confidence: 99%

Preparation and characterization of three phase epoxy syntactic foam filled with carbon fiber reinforced hollow epoxy macrospheres and hollow glass microspheres

Dong

Zhang

et al. 2014

Polymer Composites

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The present study focuses on the preparation and characterization of three phase epoxy syntactic foam (ESF) filled with carbon fiber reinforced hollow epoxy macrospheres (CFR-HEMS) and hollow glass microspheres (HGMS). The ESF was produced by embedding CFR-HEMS into a mixture of epoxy-hardener and 30 wt% HGMS. An innovative approach and simple procedure was implemented in the preparation of CFR-HEMS where expanded polystyrene (EPS) beads were used as initiation template. The EPS beads were coated with epoxy resin and carbon fiber using "rolling ball method," and these coated EPS beads were later cured and postcured at high temperature which will shrink the EPS beads thus producing a hollow macrosphere structure. The compressive property of ESF was characterized and the mechanical model was issued. The ESF (450 kg/ m 3

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Section: Introductionmentioning

confidence: 99%

Preparation and characterization of three phase epoxy syntactic foam filled with carbon fiber reinforced hollow epoxy macrospheres and hollow glass microspheres

Dong

Zhang

et al. 2014

Polymer Composites

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“…[3,4] The mechanical properties of these foams are dependent upon the density of the foam, which in turn is dependent upon the resin/microballoon ratio; earlier study [15] revealed such dependence. Reports on compressive properties of syntactic foams are several, [11,[14][15][16][17][18] but the investigations on flexural behaviour of syntactic foam core systems are scarce. [9,19] There are two new aspects in the present work.…”

Section: Introductionmentioning

confidence: 99%

Flexural Behaviour of Fibre‐Reinforced Syntactic Foams

Karthikeyan

Sankaran

Kishore

2005

Macro Materials & Eng

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Summary: Syntactic foams containing 0.9, 1.76, 2.54, 3.54 and 4.5 vol.‐% of E‐glass fibres in the form of chopped strands were processed and subjected to three‐point bending tests. The results showed that introduction of chopped strand fibres into the syntactic foam system increased the flexural strength. The values increased with the amount of fibres in the foam system except for the one containing 3.5 vol.‐% of fibres, which showed a lower value than other fibre‐reinforced systems, thereby deviating from the trend. This exception was attributed to the difference in processing route adopted for this particular fibre‐bearing foam. However, in general, the incorporation of chopped strand fibres improved the flexural behaviour of the syntactic foam system without much variation in density, thus making reinforced syntactic foams to act as better and improved core materials for sandwich applications.Fibre‐debonding and protuberance, and river pattern in a failed sample.magnified imageFibre‐debonding and protuberance, and river pattern in a failed sample.

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“…Syntactic foams have completely closed cells and therefore absorb water to a lesser degree compared to conventional foams which have open-cell structure [50,73,74,77,80]. Moisture absorption in syntactic foams is affected by a large number of parameters.…”

Section: Features Of Syntactic Foamsmentioning

confidence: 99%