通常CR-39塑料上的蚀刻径迹是无色透明的,在显微镜下径迹不够醒目,识别比较困难。为了克服这一缺点,我们设计了蚀刻径迹染色法,现介绍如下: 1.实验方法 采用上海东风农药厂提供的1.5mm厚的CR-39塑料片(为含30％甲基丙烯酸甲酯和70％一甘醇双烯丙基碳酸酯的共聚物),经辐照、蚀刻、清洗和剥层后在100℃、 Usually CR-39 plastic etch track is colorless and transparent, track under the microscope is not eye-catching, identification more difficult. In order to overcome this shortcoming, we designed the etching track dyeing method, which is introduced as follows: 1. Experimental Methods The 1.5 mm thick CR-39 plastic sheet provided by Shanghai Dongfeng Pesticide Factory (containing 30% methyl methacrylate and 70% monoethylene glycol bisallyl carbonate copolymer), after irradiation, etching, cleaning and stripping at 100 ℃,