FIBEROPTIC EPOXY COMPOSITE CURE SENSOR .1. DEPENDENCE OF REFRACTIVE-INDEX OF AN AUTOCATALYTIC REACTION EPOXY SYSTEM AT 850 NM ON TEMPERATURE AND EXTENT OF CURE

被引：39

作者：

LAM, KY ^{[1
]}

AFROMOWITZ, MA ^{[1
]}

机构：

[1] UNIV WASHINGTON,DEPT ELECT ENGN,SEATTLE,WA 98195

来源：

APPLIED OPTICS | 1995年 / 34卷 / 25期

关键词：

D O I：

10.1364/AO.34.005635

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We discuss the behavior of the refractive index of a typical epoxy-aromatic diamine system. Near 850 nm the index of refraction is found to be largely controlled by the density of the epoxy. Models are derived to describe its dependence on temperature and extent of cure. Within the range of temperatures studied, the refractive index decreases linearly with increasing temperature. In addition, as the epoxy is cured, the refractive index increases linearly with conversion to the gel point. From then on, shrinkage in the volume of the epoxy is restricted by local viscosity. Therefore the linear relationship between the refractive index and the extent of cure does not hold beyond the gel point.

引用

页码：5635 / 5638

页数：4

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