• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Optical Materials >Modified melamine resins for optical applications
【24h】

Modified melamine resins for optical applications

机译：光学应用的改性三聚氰胺树脂

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

A new four-step synthetic-route for combining chromophores with melamine resins was developed and their use for optical applications was demonstrated. Despite other melamine resins, the basic molecule of this system is the 2,4,6- trichloro-1,3,5-triazine, the cyanuric chloride. In the first step, the azochromophore was bonded to the striazinering. Then the residual chlorines of this triazine-chromophore were substituted by ammonia or primary amines. In the third step formaldehyde was added, leading to melamine-chromophore precondensates. For increasing the stability and the solubility of these precondensates, the reactive methylolgroups were etherificated with methyl or butyl alcohol. One example of such a crosslinkable melamine-chromophore was illustrated and characterized by NMR- and mass-spec- troscopy. The mass-spectrum gives evidence that the modified melamine precondensates are monomers and not a mixture of different oligomers like else in melamine-aldehyde prepolymers. The result of these systems is a crosslinkable melamine-chromophore monomer which is converted in a resin by thermal treating or by acids. It is remarkable that these polymers show an excellent thermal stability with a de-composition temperature beyond 300deg.C, a great advantage for using them as optical materials. Their usability as second-order nonlinear optical material was investigated by corona poling.
机译：开发了一种将生色团与三聚氰胺树脂结合的新的四步合成路线，并证明了它们在光学应用中的用途。尽管有其他三聚氰胺树脂，该体系的基本分子还是2,4,6-三氯-1,3,5-三嗪（氰尿酰氯）。第一步，将偶氮发色团键合到三嗪环上。然后该三嗪发色团的残留氯被氨或伯胺取代。在第三步中，添加甲醛，生成三聚氰胺-发色团预缩合物。为了增加这些预缩合物的稳定性和溶解性，将反应性羟甲基用甲醇或丁醇醚化。举例说明了这种可交联的三聚氰胺发色团的一个实例，并通过NMR和质谱进行了表征。质谱表明，改性三聚氰胺预缩合物是单体，而不是像三聚氰胺-醛预聚物中的其他低聚物那样的混合物。这些系统的结果是可交联的三聚氰胺发色团单体，该单体可通过热处理或酸转化为树脂。值得注意的是，这些聚合物表现出优异的热稳定性，分解温度超过300℃，这是将其用作光学材料的巨大优势。通过电晕极化研究了它们作为二阶非线性光学材料的可用性。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号