The research physical-mechanical and optical properties of PMMA in with the addition secondary polymer

Abstract

One of the main representatives of optical plastics is polymethylmethacrylate – PMMA, characterized good technological properties when processed by method of injection molding. Products made of PMMA have high construction and surface appearance properties, and light transmission of up to 92%, as a result of production losses technological waste is generated in the form of reject of details and sprues. The complexity using recycled polymer is primarily in reducing the light transmission, as well as a change of intermolecular interaction, occurring during re-heat treatment secondary polymer. During the work of technological parameters been picked up recycling PMMA recycled content to 30% polymer in industrial conditions by injection molding on the molding machine DEMAG D-55 for standard samples – the blade in the form of varying degrees and details of the steps of varying thickness. In work results of experimental studies of changes in physico-mechanical and optical index PMMA with the introduction of the secondary polymer, in this paper we study basic technological parameters of bulk and technological that have a significant impact on the structural features of the product, after cooling in the mold. At the second stage of the study studied the influence of the content of the secondary polymer on the physico-mechanical and optical indicators are of products from PMMA, presented graphic dependences. From the data obtained revealed that the content of the secondary polymer influences the intermolecular bonds and as a consequence the packing density of the macromolecules. During carrying out the spectral analysis of UV-spectrum and IR-spectroscopy study the effect of of the secondary polymer on the structural changes of functional groups in the macromolecule PMMA.