CAJ | 학술논문

采用同步法制备了聚氨酯/环氧树脂互穿聚合物网络(IPN)半硬泡沫.研究了IPN泡沫密度及环氧树脂用量对压缩力学性能的影响.研究表明,在所研究的泡沫密度范围内,压缩模量、屈服强度均与泡沫材料密度成指数关系,并且这种指数关系可以根据数学模型用泡沫材料的相对密度表示,且理论曲线与实验曲线吻合较好.因此,利用该模型可以对泡沫的压缩性能进行预测.IPN泡沫的压缩模量和屈服强度与环氧树脂用量成指数式增长关系,当环氧树脂的质量分数超过20%时压缩模量和屈服强度显著提高.
채용동보법제비료취안지/배양수지호천취합물망락(IPN)반경포말.연구료IPN포말밀도급배양수지용량대압축역학성능적영향.연구표명,재소연구적포말밀도범위내,압축모량、굴복강도균여포말재료밀도성지수관계,병차저충지수관계가이근거수학모형용포말재료적상대밀도표시,차이론곡선여실험곡선문합교호.인차,이용해모형가이대포말적압축성능진행예측.IPN포말적압축모량화굴복강도여배양수지용량성지수식증장관계,당배양수지적질량분수초과20%시압축모량화굴복강도현저제고.
A series of polyurethane (PU)/epoxy resin (ER) semirigid interpenetrating polymer net-works (IPN) foams were prepared by a simultaneous polymerization technique. Studied the effect of the IPN foam density and ER content on the compression mechanical property. Result showed over the density range of the examined foams, the compression modulus and yield stress of the foams could be described by a power-law relationship with respect to density. This power-law relationship could be described in terms of the relative density of the foam using a simple geometric model, and the theory curve could match the test curve. Thus, the compression property of the foam could be predicated by the model. The compression modulus and the yield stress of the IPN foam could be described by an exponential growth relationship with respect to ER con-tent, When ER content exceeded 20 wt%, the compression modulus and yield stress increased remarkably.