The residual extension which remains after a sample of rubber has been stretched for some
period, then released and allowed to recover, is popularly called permanent set. This set …

A molecular theory is developed to describe quantitatively the permanent set taking place in
thin samples of vulcanized natural and synthetic rubbers held at constant extension at …

An important property of vulcanized rubber is an increase in the unstrained length after
stretching, the so-called permanent set. When stretching is for short duration at ordinary …

The relationship between network Structure and mechanical properties for rubber
vulcanizates has been widely investigated". However, the above relation has mot been …

In considering existing information on the mechanical properties of raw rubber, it is not
generally possible to distinguish between the effects of elastic and of plastic deformation. In …

Highly oriented natural rubber samples prepared by a modification of the racking process
described by Feuchter were cross-linked by means of 7-radiation. Some of the physical …

The interprztation of stress-relaxation measurements made during the ageing of vulcanized
rubbers is complicated by two factors:(i) the deviation of the stress-strain behaviour of …

An experimental study is described of a “secondary” relaxation process in stretched
vulcanizates, which becomes dominant after long periods at normal temperatures. It is …

CRUDE rubber appears on the market principally in the form of slabs andsmooth or creped
sheets, thehistory of which the consumer is often entirely ignorant. It has long been …

In agreement with the results of dynamic experiments of Stratton and Ferry, this study of
relaxation of rubber vulcanizates entirely confirms the existence of peculiar, slow …