Crosslinking and mechanical property of liquid rubber. II. Curative effect of aromatic diols

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Abstract
The relationships between the properties and structure of polyurethane elastomers derived from hydroxyl‐terminated liquid polybutadiene (HT‐BD), several low molecular weight aromatic diols, and diisocyanates were studied. The curative effects of the diols were examined by such means as tensile properties, dynamic viscoelasticity, x‐ray diffraction, and others. It was found that the properties of the elastomers derived from HT‐BD were greatly affected by the structure of low molecular weight chain extender diol. These results were interpreted by the steric effect, crystallinity, and the concentration of polar groups.

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