纳米CaSO_4晶须改性聚氨酯密封胶的制备  

Preparation of polyurethane sealant modified by nano-calcium sulfate whisker

作　　者：白金[1] 苗磊[1] 张洪林[1] 张连红[1] 

机构地区：[1]辽宁石油化工大学环境工程系,辽宁抚顺113001

出　　处：《中国胶粘剂》2007年第7期41-43,共3页China Adhesives

基　　金：国家863计划基金项目(编号2005AA001510)

摘　　要：通过三种聚醚制成的密封胶进行对比,具体考察了CaSO4晶须对密封胶力学性能的影响。结果表明,在单组分湿固化聚氨酯密封胶中添加纳米CaSO4晶须后,密封胶的剪切强度得到提高,硬度和弹性变化不大。使用CaSO4晶须替代气相二氧化硅,在降低成本的同时,密封胶的触变性仍然很好。By three sealants made of different polyether were compared, the influence of nano-calcium sulfate whisker to the mechanical properties of sealants were reviewed. The results showed that added CaSO4 whisker into one component, moisture-curing PU sealant,its shear strength is improved,while the hardness and ultimate elongation are changed little. When CaSO4 whisker substitutes silicon dioxide in PU sealant,the no-sagging property of the sealant is good enough and the cost decline.

关 键 词：聚氨酯密封胶 纳米CaSO4晶须 改性 

分 类 号：TQ635[化学工程—精细化工]