Thermal Expansion of Transcrystalline Strips

Author:

Klein Nava1,Marom Gad1

Affiliation:

1. Casali Institute of Applied Chemistry The Hebrew University of Jerusalem, 91904 Jerusalem, Israel

Abstract

The results of a direct measurement of the longitudinal thermal expansion coefficient of an isolated transcrystalline layer are reported below for a nylon 66 transcrystalline strip grown on a Kevlar 29 aramid fibre. It is shown that the expansivity of the transcrystalline layer is more than an order of magnitude smaller than that of the bulk crystallized matrix. It is hypothesized that the transcrystalline layer relieves thermal stresses in composite materials by matching the expansivities of the constituents.

Publisher

SAGE Publications

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