摘要
以喷涂聚脲弹性体技术为依托,合成NCO%在13~14的芳香族聚脲半预聚物(A组分),在B组分中引入适当比例的长链氨基聚醚和位阻型胺类扩链剂,设计合适的工艺参数制备出一种低模量、高伸长率的聚脲柔性减阻涂层。与传统的硅胶、PVC、聚氨酯、丙烯酸等减阻涂层相比,该涂层具:①耐冲击,附着力好;②密度与水基本相同;③模量低,阻尼小;④涂层致密,不透水等重要特点。经中国船舶科学研究中心测试,在3 m/s^10 m/s时平板上1 mm的柔性减阻涂层可降低阻力6%以上。
Based on the technology of the spray polyurea elastomer （SPUA）, a new polyurea compliant coating synthesis method for drag-reducing and noise-reducing technique was applied. The system consists of the A component, a quasi-prepolymer 13%-14% of free NCO, and the B component, a mixture of polyetheramine, amine extenders and other additives. The features of the new material; （1） high adhesion and impact resistance; （2） low modulus and high elongation; （3） seamless, flexible. The sample of SPUA compliant skin were tested repeatedly in a cyclic water tank. Several samples of drag-reducing 6%-7% have been obtained in 3 m/s-10 m/s.
出处
《高分子材料科学与工程》
EI
CAS
CSCD
北大核心
2007年第3期247-250,共4页
Polymer Materials Science & Engineering
基金
国家自然科学基金面上项目(50373009)资助
关键词
柔性面
聚脲
减阻
compliant skin
polyurea
drag-reducing
