関連ワード:  does polystyrene absorb water    does styrofoam absorb water    does polystyrene soak up water    does polystyrene absorb moisture    can styrofoam absorb water    does expanded polystyrene absorb water    does polystyrene foam absorb water    does extruded polystyrene absorb water    does polystyrene insulation absorb water    do polystyrene balls absorb water