Fluorescent property and compatibility of adhesive used for pneumatic pellet assembly

In order to provide spot positioning detection method of adhesive glue for precision assembly of pneumatic pellet, this paper studies the compatibility and fluorescence of epoxy adhesive with coumarin and fluorescent dye. The adding process is introduced, the impacts of coumarin concentration as well as the curing agent on the fluorescence intensity are studied, and anhydrous ethanol is used to reduce the surface tension. The results show that the incident wavelength of coumarin and fluorescent dye is 274 nm and 435 nm, the excitation wavelength is 519 nm and 365 nm, respectively. Coumarin can be dissolved in the curing agent 176 well and blue fluorescence light is observed. The fluorescent dye is uniformly dispersed in the adhesive system, which can be used for detecting and locating.