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← ScienceWhich consequence results when epoxy resin cures quickly?
A)Exothermic reaction causes thermal expansion✓
B)Chain scission reduces polymer strength
C)Increased Van der Waals interaction
D)Crystallization improves material properties
💡 Explanation
Epoxy curing generates heat, so rapid curing accelerates the exothermic reaction, leading to increased temperatures that cause thermal expansion and potential stress because volumetric expansion happens quickly; therefore cracks form, rather than a uniform solid.
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