CAJ | 학술논문

开发环境友好型聚氨酯是目前聚氨酯（polyurethane,PU）泡沫塑料领域的热点课题。在PU中引入大豆分离蛋白质（soy protein isolate,SPI）,采用阻燃聚醚制备了环境友好型阻燃高回弹聚氨酯软泡。研究了SPI的不同添加方式及用量对聚氨酯软泡物理、力学、阻燃和生物降解性能的影响。结果表明,SPI以添加的方式而不是替代聚醚的方式加入软泡性能更好;少量添加SPI可以提高PU软泡的开孔率、密度、压陷硬度、舒适因子、回弹率和断裂伸长率,对压缩永久变形率、拉伸强度和极限氧指数影响不大。SPI改变了PU的硬段结构,可以有效促进聚氨酯泡沫的生物降解。
개발배경우호형취안지시목전취안지（polyurethane,PU）포말소료영역적열점과제。재PU중인입대두분리단백질（soy protein isolate,SPI）,채용조연취미제비료배경우호형조연고회탄취안지연포。연구료SPI적불동첨가방식급용량대취안지연포물리、역학、조연화생물강해성능적영향。결과표명,SPI이첨가적방식이불시체대취미적방식가입연포성능경호;소량첨가SPI가이제고PU연포적개공솔、밀도、압함경도、서괄인자、회탄솔화단렬신장솔,대압축영구변형솔、랍신강도화겁한양지수영향불대。SPI개변료PU적경단결구,가이유효촉진취안지포말적생물강해。
The development of environmental friendly polyurethane foams is a focus in polyurethane industry. By introducing soy protein isolate （ SPI ） and flame retardant polyols into polyurethane （ PU ）, environmental friendly flame retardant high resilience flexible polyurethane foams were prepared by free foaming. The effects of SPI content and addition manner on the physical, mechanical, biodegradability, and flame retardant properties of PU foams were investigated. The results show that, introducing SPI by adding not by substituting for polyols is an effective way to improve the performance of PU foam. By adding a small amount of SPI, the open cell ratio, elongation at break, resilience, comfort factor, density, and indentation force deflection value of PU foam are increased, while the tensile strength, limited oxygen index, and compression set value are slightly affected. SPI changes the structure of rigid segments, hence effectively enhances the biodegradability of PU foam.