Answer:
Here are six materials that are good insulators to keep ice from melting for at least twenty minutes:
Styrofoam: This material is often used to make insulated coolers because of its low thermal conductivity, which makes it an excellent insulator.
Fiberglass: This material is often used in insulation for walls and attics because it traps air and reduces heat transfer.
Polyurethane foam: This material is used to insulate refrigerators and freezers because of its excellent thermal insulation properties.
Cellulose insulation: This is a type of insulation made from recycled materials that provides good thermal insulation.
Mineral wool: This is a type of insulation made from natural rock materials that provides good thermal insulation and fire resistance.
Aerogel: This is a highly effective insulator made from a gel-like substance that has been dried to create a material that is more than 95% air. It is often used in scientific applications where extreme temperature control is required.