Epoxy resin is a thermosetting plastic known for which properties?

Epoxy resin is a thermosetting plastic known for which properties?

• A. High adhesive strength and good electrical insulation
• B. Low chemical resistance
• C. Very soft and ductile
• D. Magnetic properties

Answer: (A)

Epoxy resin, as a thermosetting plastic, forms a rigid, cross‑linked network when it cures. This cross‑linking gives it very high strength in bonds and excellent electrical insulation because the cured material has low electrical conductivity and remains stable under heat and chemicals. That combination—strong adhesion to substrates and good dielectric properties—is what makes epoxy resins particularly valuable as structural adhesives and as insulating coatings in electronics. The other statements don’t fit: epoxies are not known for low chemical resistance; they resist many chemicals well. They are not very soft or ductile; they are typically hard and stiff after curing. And they don’t have magnetic properties since they are non-magnetic insulators.

Epoxy resin, as a thermosetting plastic, forms a rigid, cross‑linked network when it cures. This cross‑linking gives it very high strength in bonds and excellent electrical insulation because the cured material has low electrical conductivity and remains stable under heat and chemicals. That combination—strong adhesion to substrates and good dielectric properties—is what makes epoxy resins particularly valuable as structural adhesives and as insulating coatings in electronics.

The other statements don’t fit: epoxies are not known for low chemical resistance; they resist many chemicals well. They are not very soft or ductile; they are typically hard and stiff after curing. And they don’t have magnetic properties since they are non-magnetic insulators.