A process for improving sensitivity of a film base, coated with a dispersion of a normally crystalline polyacetylenic compound in a non-solvating liquid which is dried on the film surface, to particular photon energy band, specifically, long wavelength UV; the polyacetylenic compound preferably having at least two conjugated acetylenic linkages and containing from 12 to 60 carbon atoms. The sensitization of the film to long wavelength UV is achieved via the addition of photoinitiator(s) capable of absorbing UV energy and converting it to free radicals. The process comprises dispersing the normally crystalline polyacetylenic compound in the non-solvating liquid to a concentration of from about 2 to about 50% polyacetylene crystalline solids and a photoinitiator or combination of photoinitiators to a concentration of from 0.01 to 10%. The resultant dispersion is then coated and dried on a substrate. Additionally, applications using this film as a UVA illumination indicator and dosimeter are disclosed as well.
一种用于提高薄膜基材对特定光子能带(特别是长波紫外线)的敏感性的工艺,薄膜基材上涂覆有正常结晶的聚
乙炔化合物在非溶解液体中的分散液,该液体在薄膜表面干燥;聚
乙炔化合物最好至少有两个共轭
乙炔链节,并含有 12 至 60 个碳原子。薄膜对长波紫外线的敏化是通过添加能吸收紫外线能量并将其转化为自由基的光
引发剂来实现的。该工艺包括将正常结晶的聚
乙炔化合物分散在非溶解液中,使其浓度达到约 2%至约 50%的聚
乙炔结晶固体和 0.01%至 10%的光
引发剂或光
引发剂组合。然后在基底上涂布并干燥所得到的分散体。此外,还公开了将这种薄膜用作 UVA 照明指示器和剂量计的应用。