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This paper studied the PVC resin as the matrix , through rubber blending modified PVC thermoplastic elastomer prepared by the method of modified PVC preparing thermoplastic elastomers, this paper carried out to explore three systems : PVC / PVAF, PVC / PNBR and dynamically vulcanized PVC / PNBR. For PVC / PVAF system discussed PVC / PVAF the mass ratio of plasticizer used in conjunction with the quality and the performance impact . The results showed that , PVC / PVAF quality 80 /20 and 20/80 , the blends have better overall performance. 20 /80, the tensile strength up to 21.9MPa, tear strength of 67.SKN / m, permanent deformation of 18 %, 100 % elongation deformation rate of 5%. Kaolin better reinforcement , the tensile strength of 22MPa, tear strength of 68KN / m. Blending of PVC / PNBR system, research of PVC / PNBR the mass ratio of plasticizer quality , degree of polymerization of the polymer size, and filling properties of the blends . Experimental results show that , PVC / PNBR quality 70 / 30, the tensile strength of 10.7MPa, 390% elongation , tear strength 44.5KN / m. PVC high degree of polymerization system has high strength and elongation characteristics , silica-filled system 's overall performance is better. For PVC / PNBR dynamic vulcanization type system , the general amount of sulfur in 0.5phr, good mechanical properties of the system , with the use of accelerators can significantly improve the system 's overall performance. It was found that the dynamic vulcanization can significantly improve the overall performance of materials , such as tensile strength can be increased from 10.6MPa to 16.1MPa, increased by more than 50% , the elongation at break increased by more than 20%. After dynamically vulcanized PNBR of smaller particle size , can be more uniformly dispersed in the continuous phase . Through experiments , PVC / PNBR dynamically vulcanized blends type and static and dynamic heat resistance heat resistance are good. Scanning electron micrographs clearly show , PVC / PNBR system is a typical \The results show that the dynamic mechanical properties , PVC / PNBR system has better flexibility than PVC , better mechanical properties and lower the glass transition temperature, but PVC / PNBR the mechanical loss has increased .
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