metal
porcelain.
An insulating material, such as foam, fiberglass, or wood, does not allow heat to be conducted easily due to its low thermal conductivity. These materials trap air pockets within their structure, which inhibits the transfer of heat energy.
A thermal insulator. The best is a vacuum, but static air is good, if it can be contained in a mat of fibres for example.
Wood or plastic
Wood or plastic
Insulator.
Metals such as copper and aluminum are good conductors of heat and allow heat to flow easily through them. They are often used in cooking pans and heat sinks to efficiently transfer heat.
An insulator is a material that does not allow heat to easily pass through it. Examples of insulators include wood, air, and plastic. These materials have low thermal conductivity, which slows down the transfer of heat.
Materials that allow heat to pass through them easily are called conductors. Examples of conductors include metals like copper and aluminum.
A material which is a good conductor of electricity or heat.
titanium for one thing also maybe metal if there was enough
Cardboard is not a good insulator and therefore does not effectively keep heat out. It can easily allow heat to pass through, so it is not a suitable material for blocking heat.