2. Syntactic foams

2.1 Definition

Syntactic foams are a family of cellular composite materials obtained by incorporating preformed cells into a base binder.

In practice, this is achieved by mixing a hollow spherical filler with an organic resin. The term syntactic is used by analogy with syntax, which refers to the arrangement of words making up a sentence. The term "syntactic foam" is therefore used to describe a material with an ordered arrangement, over short or long distances, of cavities called microbubbles.

A syntactic foam therefore has a different cellular structure to that found in conventional foams obtained by chemical or physical expansion of a gas during the polymerization or resin solidification process. The cavities formed in these materials...

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Syntactic foams

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Bibliography

(1) - PUTERMAN (M.) - Syntactic foams - – 1. preparation, structure and properties – Journal of cellular plastics (0021-955X), 16 (4), p. 223 (1980).
(2) - WHITAKER TODD (E.) - Hydrostatic pressure testing of low-density syntactic foam...

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Standards and norms

Plastics – Methods for determining the density of non-cellular plastics – Part 3: Method using a gas pycnometer - NF EN ISO 1183-3 - 1999
Rigid cellular plastics – Determination of compression characteristics - ISO 844 - 2014
Plastics – Determination of compression properties - NF EN ISO 604 - 2004
Rigid cellular plastics -- Determination of bending properties – Part 2: Determination of flexural...