A novel polyurethane sealant based on hydroxy-terminated polybutadiene

被引:20
|
作者
Patri, M [1 ]
Rath, SK [1 ]
Suryavansi, UG [1 ]
机构
[1] Addl Ambernath, Naval Mat Res Lab, Ambernath 421506, Maharashtra, India
关键词
polyurethane sealant; mechanical properties; aging properties; hydrolytic stability;
D O I
10.1002/app.22815
中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
A novel two component polyurethane sealant has been prepared. Component A, known as prepolymer, is synthesized by capping hydroxy-terminated polybutadiene (HTPB) with toluene diisocyanate. Component B, known as hardener, comprises of a polyol (polyoxypropylene triol) as crosslinker and 4,4'-diamino-3,3'-dichlorodiphenylmethane (DADCDPM) and 4,4'-diamino-3,3'-dichlorotriphenylmethane (DADCTPM) as chain extenders and fillers. Evaluation of mechanical properties and aging studies indicate that the sealant has excellent mechanical properties and stability in different environment. (c) 2005 Wiley Periodicals, Inc.
引用
收藏
页码:884 / 890
页数:7
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