Carbon quantum dots (CQDs) with good blue fluorescence properties were prepared by hydrothermal method and combined with acrylic resin. Then under vacuum conditions

a visible light curing system was constructed to prepare CQDs composite films. Next

the structure and fluorescence properties of CQDs

the morphology

structure

water and solvent resistance of CQDs composite membranes were studied by using Fourier transform infrared spectrometer

dark box three-purpose ultraviolet analyzer

scanning electron microscope

thermogravimetric analyzer

video contact angle measuring instrument and relevant test. The results show that the CQDs with blue fluorescence are prepared. When 0.6g CQDs is added

a dense CQDs composite membrane is obtained. The composite membrane has a water absorption rate of 0.24%

a contact angle of 110.13°

good thermal stability below 150℃

good solvent resistance

and good hydrophobic effect. Finally

the curing mechanism was discussed. It is believed that carbon quantum dots have up-conversion properties

which can convert visible light in the low-energy band into ultraviolet light in the high-energy band

which in turn excites photoinitiators to generate free radicals to initiate polymerization. The curing formula and vacuum visible light curing process in this paper have high application potential and value in industry.