Fracture-energy testing, elastomer-modified

Fracture-Energy Testing. Table I gives the recipes and the fracture energies measured under slow and fast rates of test, for the elastomer-modified VER and for ETBN additions to the elastomer-modified VER. Also given are the total amounts of reactive liquid rubber, from both ETBN addition and CTBN reacted directly into the VER, for each recipe. For reference, the unmodified VER has a slow GIc. of 0.11 kj/m2. Finally, the Tg obtained from differential scanning calorimetric measurements is given for each recipe. 

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