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Polyacrylates (ACR) has excellent weather resistance, can significantly improve the impact strength of the thermoplastic resin (such as: IPVC) promoting resin plasticizing properties, and enhance the toughening resin, etc.. But it is often based on the expense of the cost of PVC, and other valuable materials rigidity, heat resistance, dimensional stability and processability properties; polyacrylate expensive, resulting in the growth of the modified PVC prices. With the advent of nanotechnology, nano-particles has characteristics of surface effects and quantum effects, not only can improve the toughness of the material, and also increase the rigidity and strength of the material. Nanotechnology toughening of PVC plastic, reinforced modified to provide an innovative method and means. This article select the silica sol as the inorganic nanoparticles, and the surface thereof an organic modified, Add in the ACR housing during the preparation of the modified silica sol, obtained by the polymerization of silica sol modified polyacrylate composite material (ACR/SiO2), and further The application of the composite material in PVC. The main content and results are as follows: the organic modification, preferably KH-560 as the surface modifying agent of the sol by the FT-IR, DLS by choosing different chain lengths of the silane coupling agent and functional groups on the sol surface, TG characterization methods to characterize the modified silica sol, the experimental results show that: the silane coupling agent KH-560 has been successfully grafted onto the surface of nano-SiO2 modified nano-SiO2 has better lipophilicity, easy The organic polymers ACR composite. Dynamic light scattering particle size analyzer synthesized composite latex particles (ACR/SiO2) particle size and distribution analysis test, by means of FT-IR, TG, DSC, have investigated ACR/SiO2 of changes in the composition, thermal decomposition performance and glass transition temperature, the structure of ACR/SiO2 verified by TEM, and finally by means of the SEM observation of the surface morphology of the different the SiO2 content ACR/SiO2 composite particles; experimental results show that the seed emulsion prepared by using pre-emulsification composite ACR/SiO2 emulsion, can effectively control the latex particle size and its distribution; FT-IR the TG tests show, Nano ACR latex particles modified nano-Si02 particles reached a certain degree of composite; TEM, SEM, spectrum display, composite emulsion, the presence of the sol is in the form of nano-SiO2 particles, and uniformly adsorbed on the surface of the ACR latex particle; DSC analysis showed a glass transition temperature (Tg ACR/SiO2 composite particles is more than pure ACR) . Will nanometer ACR/SiO2 composite material with PVC blend, analysis of ACR/SiO2 composite of plasticized PVC and mechanical properties. The experimental results show that: the a ACR/SiO2 composite particles can contribute to the plasticization of PVC system, shorten plasticizing time, improve the plasticizing properties, and no significant adverse effect on the machining properties of PVC; of nano ACR/SiO2 particles well dispersed in PVC matrix, and can significantly improve the notched impact strength of the PVC. When the mass ratio of nano-SiO2 and ACR 15/100, and 100 parts PVC 6 copies of the nano ACR/SiO2, notched impact strength is most obvious.
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