Energy absorbing blends

摘要

A composite material which is elastic, which exhibits a resistive load under deformation which increases with the rate of deformation, which is unfoamed or foamed, comminuted or uncomminuted and which comprises i) a first polymer-based elastic material and ii) a second polymer-based material, different from i), which exhibits dilatancy in the absence of i) wherein ii) is entrapped in a solid matrix of i), the composite material being unfoamed or, when foamed, preparable by incorporating ii) with i) prior to foaming.

主权项

1. A method of protecting a subject from vibrational energy, comprising:
(a) providing an impact protection system comprising an un-foamed composite material, the composite material being elastic and exhibiting a resistive load under deformation which increases with a rate of deformation, the composite material comprising (i) a solid matrix comprising a first polymer-based elastic material and (ii) a second polymer-based elastic material different from (i) which exhibits dilatancy in the absence of the first polymer-based elastic material, wherein the second polymer-based elastic material is entrapped in the solid matrix in an intimate admixture; and (b) placing the impact protection system on the subject to protect the subject from the vibrational energy,wherein the intimate admixture is attainable by mixing together the first polymer-based material elastic material and second polymer-based elastic material in the semi-molten or molten state, and wherein the composite material is associated with a textile layer or is a shaped article in the form of a fiber, or a textile or web comprising filaments or fibers.