Technical Physics Letters
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Structure and phase composition of films synthesized by laser sintering from polyvinylidene fluoride of various grades
The processes of laser synthesis of films with a thickness of 80-230 μm from polyvinylidene fluoride of various grades are studied. It is established that the range of synthesis modes does not depend on the grades of PVDF. The content of the piezo active β-phase decreases after laser treatment, but the complete transformation of β-> α does not occur. The process of thermos-oxidative degradation after laser treatment is not observed. Under the same treatment conditions, the higher the open porosity coefficient, the lower the polymer melt flow index (MFI). Depending on the MFI of the initial polymer, the selection of laser exposure modes can control the porosity of the films in the range of 26-68%. Keywords: laser treatment, polyvinylidene fluoride (PVDF), porous films, melt flow index.
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Дата начала обработки статистических данных - 27 января 2016 г.