Which outcome occurs when an epoxy resin is inadequately mixed with its hardener during composite manufacturing?

💡 Explanation

When the epoxy resin is poorly mixed, incomplete crosslinking polymerization occurs because insufficient reactive sites results in shorter polymer chains with weaker van der Waals bonding and incomplete covalent bond formation. Therefore reduced glass transition temperature results, rather than increased adhesion, decreased the absorption rate, or strength enhancements which depend on a complete robust polymer matrix.

• Which consequence results when supersonic airflow encounters surface irregularities?
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• Which effect dominates when solid catalyst surface area decreases during a reaction operating at otherwise constant conditions?
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• Which phenomenon limits flow rate in laminar viscous pumps?