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In this paper, two different methods were prepared PVC-based thermoplastic elastomer (PVC-TPE). Method, the acrylic acid ester monomer, PVC (PVC-1300, PVC-2500), a plasticizer and the modifying agent by in situ the molten blend of preparing a PVC-TPE; Second method, the PVC-1300 resin with 1 mol / L, The NaOH solution processing, first prepared with mild removal of HCl in the PVC resin (DPVC), then DPVC the situ graft copolymerized with the acrylate monomer by-TPE prepared by reacting DPVC. Electronic universal testing machine, dynamic mechanical analysis, thermal analyzers, torque rheometer prepared PVC-TPE DPVC-TPE, static mechanical properties, dynamic mechanical properties, thermal properties, processing the rheological properties of research. Method One mainly on the amount of plasticizer, acrylic ester rubber type and amount, in situ melt blending process on the mechanical properties and processing properties of PVC-TPE. The results show that: the amount of plasticizer (DOP), the key factors that affect the mechanical properties and processability of the PVC-TPE, with the increase of the amount of DOP obtained in PVC-TPE resiliency enhanced hardness and compression permanent deformation rate reduced, but the plasticization easier, DMA data analysis shows, as the DOP dosage increases, the Tg of PVC-TPE is shifted to the low-temperature region. DOP added causes interaction between the PVC macromolecules force decreases, the increase in the activity of the segment, thus affecting the properties of the PVC-TPE. Moreover, the acrylate monomer added can effectively reduce the viscosity of the PVC melt, so that the processing to reduce energy consumption, add the acrylate rubber Tg is lower, PVC-TPE hardness, tensile strength, tear strength of the smaller. Method mainly on the DPVC the preparation process, DPVC with n-butyl acrylate (BA), reaction time, reaction temperature, and selected other acrylate monomer types and monomer DPVC-TPE mechanical properties, thermal stability and processing flow change the impact of the performance. The results show that: the PVC-1300 with 1mol / L NaOH solution at 100 ℃ processing the 2H resultant DPVC Resin Preparation TPE comprehensive performance; acrylate monomer adding the Tg of the article can be shifted to the low temperature zone, the mechanical strength , hardness, compression permanent deformation rate is reduced, and improved thermal stability, and resiliency enhancement; With the of BA and DPVC reaction temperature rises, DPVC-TPE Tg to offset the high-temperature region, the storage modulus gradually increases, and have excellent processing properties. The article also used PVC (PVC-1300, PVC-2500) and preparation of NBR and a portion of the plasticizer melt blending PVC / NBR thermoplastic elastomer, and the performance of the prepared PVC / NBR thermoplastic elastomer was studied. With the increase in the amount of NBR, the blend of thermoplastic elastomer tensile strength, tear strength, hardness, compression permanent deformation rate decreased, elongation at break first increases and then decreases; balance torque increases, plastic The increase in aging time; plasticizer migration rate and the extraction rate is gradually reduced.
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