德国亚琛工业大学的塑料加工研究院(IKV)研发出一种新型的聚氨酯发泡技术。该技术以二氧化碳为发泡剂,在替代常规化学品发泡剂的同时,降低了对环境的影响。以二氧化碳为发泡剂可以减少发泡过程中的控制力度。为了能控制反应物的膨胀,研究人员使用模内气体反压。因为膜内压力要高于二氧化碳溶解气压,所以 Aachen University of Technology, Institute of Plastics Processing (IKV) developed a new type of polyurethane foam technology. This technology uses carbon dioxide as a blowing agent, reducing the impact on the environment while replacing conventional chemical blowing agents. Carbon dioxide as a blowing agent can reduce the control of the foaming process. To control the expansion of reactants, researchers used in-mold gas back pressure. Because the membrane pressure is higher than the dissolved carbon dioxide pressure, so