Abstract

Transparent polymer sheets (PET, PEN, PI) were treated in a vacuum condition by a laser-diode (wavelength: 408 nm). The polymers were decomposed thermally with an endothermic reaction by the laser heating, and carbonization, due to the evolution of gaseous products including CO and CO₂, occurred on the surface. The heating mechanism of the polymers was summarized as the formation of carbonized layer on polymer sheets and the thermal conduction due to the heating of carbonized layer by the laser-diode. Thus, it is concluded that the choice of an appropriate wavelength for the laser-diode can facilitate modification processes for various transparent polymers.

摘要

通过激光二极管（波长：408 nm）在真空条件下处理透明聚合物片材（PET、PEN、PI）。通过激光加热，聚合物通过吸热反应热分解，并且由于包括CO和CO ₂在内的气体产物的放出，在表面上发生碳化。聚合物的加热机理概括为在聚合物片材上形成碳化层以及由于激光二极管对碳化层的加热而产生的热传导。因此，可以得出结论，为激光二极管选择合适的波长可以促进各种透明聚合物的改性过程。