KH-560对硬质聚氨酯发泡材料阻水机理的研究  

The Study on Mechanism of Water Resistance of Rigid Polyurethane Foam Material with KH-560

作　　者：吕伟刚[1] 韩晓宇 高延敏[1] 

机构地区：[1]江苏科技大学材料科学与工程学院,江苏镇江212003 [2]上海外高桥造船有限公司,上海200131

出　　处：《化学与粘合》2011年第2期45-48,共4页Chemistry and Adhesion

摘　　要：为降低水对聚氨酯发泡材料性能的影响,向聚氨酯发泡材料中添加了γ-(2,3-环氧丙氧)丙基三甲氧基硅烷(KH-560)。并利用TG、SEMI、R研究了添加硅烷偶联剂前后聚氨酯发泡材料吸水情况,最终研究出发泡材料阻水的机理。TG的结果表明,加入KH-560后,聚氨酯发泡材料的吸水性大大降低。在偶联剂的添加量为3%时,泡孔结构最佳,而且发泡材料的吸水性最低;SEM的结果表明,加入KH-560后,聚氨酯发泡材料中形成闭孔率较高、泡孔间距较小的结构,有利于缓解水在材料中的吸收与扩散。In order to reduce the effect of water on the properties of polyurethane foam material, the γ-（2,3-epoxy propoxy） propyl trimethoxysilane （KH-560） was added into the polyurethane foam material. And the water absorption of polyurethane foam material before and after adding silane coupling agents was studied with using TG, SEM and IR. The mechanism of water resistance of foam material was researched. The TG results showed that by adding KH-560, the water absorption of polyurethane foam reduced greatly. When the coupling agent amount was 3%, the foam pore structure was best, and the water absorption of foam material was lowest. The SEM results showed that by adding KH-560, a structure was formed in polyurethane foam material which had higher closed pore rate and smaller space between pores, and this made the water disperse and be absorbed more slowly in the materials.

关 键 词：偶联剂 扩散 聚氨酯泡沫 机理 

分 类 号：TQ314.266[化学工程—高聚物工业]