摘要
The possibility of curing of epoxy resin induced by femtosecond laser beam was explored through choosing different initators.Absorption spectroscopy, infrared spectroscopy（IR）,stereomicroscopy and scanning electron microscopy（SEM0 were applied to analyze the structure of epoxy resin systems after irradiation with a femtosecond laser beam.The experimental results show that the epoxy resin systems containing diaryliodonium salts can be cared by irradiation of femtosecond laser pulse,while the systems containing benzoing can not be cured.It is found that diaryliodonium salts decompose under the irradiation of femtosecond lase pulse through multi（two）-photon absorption,initiating the ring-opening polymerization of epoxy resin.And the appearance of cured area has a sheet structure consisting of many tiny lamellar structures.
The possibility of curing of epoxy resin induced by femtosecond laser beam was explored through choosing different initators.Absorption spectroscopy, infrared spectroscopy（IR）,stereomicroscopy and scanning electron microscopy（SEM0 were applied to analyze the structure of epoxy resin systems after irradiation with a femtosecond laser beam.The experimental results show that the epoxy resin systems containing diaryliodonium salts can be cared by irradiation of femtosecond laser pulse,while the systems containing benzoing can not be cured.It is found that diaryliodonium salts decompose under the irradiation of femtosecond lase pulse through multi（two）-photon absorption,initiating the ring-opening polymerization of epoxy resin.And the appearance of cured area has a sheet structure consisting of many tiny lamellar structures.
基金
FundedbytheNationalNaturalScienceFoundationofChina(No.59833110)
