Study On Performance Impacet Of Filler To PVC Flexible Insulation Composite Material

Along with the development of industrial production, transportation and city construction,as well as the increase in population density and family facilities （audio, air conditioner, TV）,environmental noise pollution is increasingly serious and has become a public hazard of humansocial environment. Therefore, the prevention and control of noise pollution has become anurgent task. According to the mechanism of noise reduction, with polyvinyl chloride （PVC） asthe matrix, Filled with the insulation effect of waste rubber powder （an increase of compositedamping to improve the sound insulation performance）， different mesh mica （through thesheet laminated structure increases acoustic reflection and refraction to improve compositeinsulation）, different mesh vermiculite （through thermal expansion, mica laminate structuresimilar to increase energy loss to improve sound effects）, graphite （to make the sound energyinto electrical energy and then converted into thermal energy and dissipated to enhance thecomposite sound-proof effect）, using the molding way to produce cut-able, flexible, light weight,thin, good mechanical properties，but also has good processing properties of novel polymericnoise reduction composite industrial production lines, which not only has good sound insulationperformance, but also has other good comprehensive performance and easily one ofindustrialized production line, from the laboratory test to actual industrial production change, forour country’s soundproof composite material industrialization production experience.First of all, in order to achieve good workability, mechanical property and sound insulationperformance, study on the basic formulation of PVC Composites and following analysis samplehas been done:1. Impact studies on DOP plasticizer content to PVC-based composites material.2. Impact studies on CPE content to PVC composite material.3. Impact studies on BaSO₄content to composite materials processing.Experimental results show that, when CPE is10（PVC quality number100as the reference）and DOP is8, the composites material has good comprehensive properties.Secondly, base on above experimental formula foundation, continue to study the performance influence of rubber scrap addition amount on the composite material; theexperimental results show that when the waste rubber was120, the composites have goodcomprehensive properties.Finally, study the impact of different fillers on PVC based sound insulation property ofcomposites, In filling rubber120phr, continue to add filler,including different number （20～40and80～100） of mica powder, different number （40and80） of vermiculite powder,800itemgraphite and flake graphite; research on the impact of acoustic insulation property, mechanicalproperties and damping performance of PVC composite filled composite material, and doobservation on the material microstructure.Experiments show that when20～40mica was filled, Sound insulation has been improved toa certain extent, when the filled80～100mica,the sound insulation effect of composite is notobvious. Filling40vermiculite, along with filling number increases, the sound insulationperformance of composite material was improved, while filling80vermiculite, number of fillingaffects the sound insulation property of material little. When filled with graphite and800itemgraphite, composite sound insulation effect is not significant, and no matter what the fillingmaterial, when filled with content increases, the processing performance of materials havedeteriorated, and elongation at break of the material change poor, rigid flexible variation.