What does a melted sponge look like?

Ordinary sponge-similar to chemical sponge is a kind of degradable water-absorbing sponge, which has the same shape as ordinary sponge but different components, so chemical sponge looks like ordinary sponge. Chemical sponge is composed of polyurethane, which is an organic substance and can be dissolved by organic solvents, such as styrene, tetrachloroethylene, trichloroethylene, glycol ether, triethanolamine, etc.