Elongation rubber aging study

It should be noted that it is the rubber phase which toughens these types of blends and small losses of rubber through process degradation can be expected to yield a material with significally lower impact strength and tensile elongation. Data from a recent aging study of ABS at 710 illustrates this point. Analysis of the rubber content... 

The reduction in stress which takes place in a test strip of rubber held at constant elongation. Stress relaxation measurements are used in the study of the ageing of rubber vulcanisates, the degradation of the network structure resulting in a reduction of the tension. 

Heat ageing characteristics of synthetic high c/5-polyisoprenes tend to be rather better than those of natural rubber. Changes in tensile strength and elongation at break after air oven ageing are less and this is illustrated in this study (Table 8). 

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