The rheological behavior of polymer-nanoparticle composites was in the main research focus in the last 20 years . All of these composites showed a non-Newtonian flow; the addition of the nanosized ZnO caused a larger viscosity increase than the medium sized at the identical solid loads. Wetting agents, also named surfactants or dispersants, possess a strong influence on the composite rheology due to a reduced interparticle friction . Also, knowledge about changes in mechanical and chemical properties of PVC due to adding the additive is important not only for the prediction of service life but also for the recycling of materials . The influence of additives and their interaction must also be considered owing to possible synergistic and antagonistic effects influencing various properties. Compensation by restabilization or adding nanoparticles and modifier agents improves the properties of produced polymers or even recycled materials . Literatures focusing on the chemical and mechanical properties of current rigid PVC or discussion about the ways of recycling of used polymer materials . Scientists believe that it is the time to revolute the PVC production industries. So, the extents of researches in this field are growth day to day . Mechanical characterizations are frequently used as sensible and trustworthy criteria for evaluation of the technical quality of PVC materials [7,8]. The most common measurements are thermal stability, tensile strength, elongation at break, modulus and impact strength, also Ref. . The effects of both chemical and physical ageing of PVC samples are generally reflected in its mechanical and thermal properties. Variations in thermal stabilities are the most sensitive measure of changes in the status of the material . This evaluation which is often neglected is in many cases more important than the more usual measurement of stress at yield. However, interpretation of the test results is very difficult owing to the many variables influencing thermal properties. It is famous that an active centre can be formed when there are unsaturated double bonds in PVC molecules chains. Under the effect of heat, light, or sonic, sequential dehydrochloricgenation will be induced and long conjugated double bond chain blocks will be generated, which shows 6–8 absorption peaks in the 250–600 nm range in the UV–vis spectra . Based on the synthetic concentration corresponding to the absorbency of the samples and the position of the absorption peaks, one can extract the chain length of the conjugated double bonds originated from the degradation of the PVC [12,13]. Certainly, Nanotechnology, for example, using of ZnO nanoparticles is one of the best solution which can improve the almost properties of some of materials .