Which mechanism limits the maximum operating temperature of epoxy adhesives in structural composites?

💡 Explanation

When temperature rises, the epoxy reaches its glass transition temperature (Tg), where increased chain mobility reduces secondary intermolecular forces, causing a dramatic drop in the adhesive's modulus and strength. Therefore the glass transition limits operating temperature, rather than hydrolysis, oxidation or crystallization which occur via alternative mechanisms or produce different effects.

• Which outcome occurs when grain boundary motion is blocked during nanocrystalline metal deformation?
• Which consequence results when a nickel catalyst degrades during methane steam reforming?
• Which consequence results when optically pumped atoms emit simultaneously?
• Which consequence results when destructive interference disrupts laser coherence?
• Which outcome related to Einstein's equivalence principle arises when comparing the gravitational redshift to a relative acceleration?
• Which consequence results when molecular dipole interactions weaken in isobutane?