It is under development to replace freon with CO_2.In America,DOW Plastics Company studied successfully to use CO_2 as foaming agent instead of polystyrene foam plate.

• CO_2代替氟里昴的应用正在开发,美国道塑料公司研制成功了用 CO_2代替现有聚苯乙烯泡沫板用发泡剂。