Advances in NDI Elastomer Chemistry
Advances in NDI Elastomer Chemistry
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DOI：
10.1177/009524439202400306
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发表时间：
1992-07
影响因子：
1.7
通讯作者：
E. Prolingheuer;J. Barnes;R. Kopp;E. von Seggern
中科院分区：
文献类型：
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作者：
E. Prolingheuer;J. Barnes;R. Kopp;E. von Seggern
自50年代初萘-1，5-二异氰酸酯（NDI）首次商业应用以来，它几乎完全与聚己二酸酯二醇结合使用。与1，4-丁二醇交联的相应预聚物得到固体NDI弹性体;与水交联得到微孔弹性体。NDI/酯弹性体在特别苛刻的动态应用中以高性能和长使用寿命而闻名。虽然聚己二酸酯软段是确保聚氨酯弹性体高结构强度的优选结构单元，但它们对水解和微生物侵蚀的敏感性要求在某些应用中加入特殊添加剂。NDI与替代多元醇（例如聚四亚甲基二醇（PTMEG）、己二酸己二酯和醚碳酸酯）的组合解决了这些问题并扩大了NDI弹性体的使用范围。特别令人感兴趣的是将酯主链的性能优点与聚醚多元醇的耐水解性相结合的碳酸二亚己酯。本文讨论了为比较不同软段含量的NDI弹性体的性能而设计的静态和动态试验的结果。利用萘-1，5-二异氰酸酯制备低硬度固体弹性体的一种有趣的方法是用水交联。虽然这些
Since its first commercial use in the early fifties naph thalene-1,5-diisocyanate (NDI) has been used almost exclusively in combina tion with polyadipate diols. The corresponding prepolymers crosslinked with 1,4-butanediol give solid NDI elastomers; crosslinking with water results in microcellular elastomers. NDI/ester elastomers are known for high performance and long service life in particularly demanding dynamic applications. Although polyadipate soft seg ments are the preferred building blocks to ensure high structural strength of polyurethane elastomers, their sensitivity towards hydrolysis and microbical attack demands the addition of special additives for some applications. The combination of NDI with alternative polyols, such as polytetramethy leneglycol (PTMEG), hexylene adipate, and ether carbonates alleviates these problems and expands the usage area of NDI elastomers. Of particular interest is a dihexylene carbonate that combines the property advantages of an ester backbone with the hydrolysis resistance of a polyether polyol. In this paper we discuss the results of static and dynamic tests designed to compare the proper ties of NDI elastomers having different soft segment contents. An interesting approach to the utilization of naphthalene-1,5-diisocyanate for low hardness solid elastomers is crosslinking with water. Although these