The Effect of Shear on the Properties of Rigid PVC
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Abstract
The rheological and fusion behavior of polyvinyl chloride (PVC) compounds plays a dominant role in
the processing operations and in the development of physical properties in the processed material. A
comprehensive study was made in this work to evaluate the effect of shear and thermal history on stability, mechanical and rheological properties of rigid PVC compounds. Different samples of Rigid Poly vinyl chloride including dry blend powder, granules, and bottles molded from both were examined. A study was also made on recycled RPVC where 25% of reclaimed material was continuously blended with fresh dry blend and processed for 15 cycles. Results showed that compaction of the PVC material took place in the brabender plastograph at constant temperature and shear stress. Correlations were given to explain results concerning residual stability and rheological behavior. Furthermore, it was seen that elongation and tensile impact are dependent on shear history.
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References
Allsopp, M.W. [1982]," Morphology of PVC", in: Burgress, R.H. Manufacturing and Processing of PVC. New York: Applied Science Publishers.215.
Annual Book of ASTM, [1989], Section 8, Vol. 08.01 Plastic, Amer. Soc. Test Mat. "M.V.S.A.", Philadelphia.
Charles H. A. [2000],"Modern Plastic Handbook."Mc-Graw Hill, New York.
Chen, C.H, Wesson R.D, Collier, J.R. and Lo, Y.W. [1995], "Studies of Rigid PVC Compounds IV: Fusion Characteristics and Morphology Analyses". Journal of Applied Polymer Science. 58: 1107-1115.
Covasa J. A.; Gilberta M. [1992], "Single Screw Extrusion of Poly (Vinyl Chloride): Effect on Fusion and Properties", Polymer Engineering and Science 32(11): pp. 743-750.
Directory of Companies Involved in The Recycling of Vinyl (PVC) Plastics [1994], Third Edition, The Vinyl Institute, a Division of the Society of the Plastics Industry, Inc,65 Madison Avenue, Morristown ,NJ 07960. May.
Fillot L -A, Hajji P, Gauthier C, Masenelli - Varlot K., [2007]," Thermomechanical History Effects on Rigid PVC Microstructure and Impact Properties", J. Appl. Poly. Sci. 104: pp.2009-2017.
Gilbert, M. [1985], "Fusion of PVC Compounds". Plastics and Rubber International.10 (3):16-19.
Hattori, T., Tanaka, K. and Matsuo, M., [1972]. “Fusion of Particulate Structure in PVC during Powder Extrusion". Polymer Engineering Science.12: pp. 199.
Ivan B., Kelen, T. T. F. [1989], in Degradation and Stabilization of Poly Vinyl Chloride; Vol. 2, Ed.; Jellinek, H. H. Ed.; Elsevier.
Marshall, D.E., Higgs, R.P. and Obande, O.P. [1983], "The Effect of Extrusion Conditions on the Fusion , Structure and Properties of Rigid PVC", Plastics and Rubber Processing and Applications. 3: 353-358.
Moghri M., Garmabi H., Akbarian M., [2004], "Effect of Processing Parameters on Fusion and Mechanical Properties of a Twin-Screw Extruded Rigid PVC Pipe", Journal of Vinyl and Additive Technology, 9 (2), pp 81 – 89.
Owen, E.D. [1989]. "Degradation and Stabilization of PVC". New York: Elsevier Applied Science Publisher. PACIA & Nolan-ITU [2004], National Plastic Recycling Survey 2004-Main Survey Report, N.
John & Plastics and Chemicals Industries Association (PACIA). Australia.
Scheirs, J., [1998],"Polymer Recycling, Science Technology and Applications", Wiley Series in Polymer Science, 1st Ed. Chichester: John Wiley & Sons, Ltd.
Sieglaff C.L. [1981]," The Morphology, Rheology and Processing Properties of Poly vinyl Chloride", Pure & Appl. Chem., Vol.53, pp. 509-520.
Summers J.W.,[1996]," Vinyl Polymers (PVC)", in Encyclopedia of Chemical Technology, 4th Ed. by John A. Davidson and Keith L. Gardner, BF
Goodrish Co. ,September 16.
Terselius B., Janson J F., Bystedt J., [1981],"Gelatin of Rigid PVC-Pipes", Journal of Macromolecular Science, Part B, 20, (3), pp. 403-414.
Truss R W [1985]," Understanding Brittle Fracture of UPVC Pipes", Pure & Appl. Chem., 57(7), pp.993-1000.
Villemaire J.P., [1983],"Apparent Viscosity Measurements Using a Capillary Viscometer with Prehearing" Polymer Process Eng., 1 (13), pp221.
Yarahmadi, N., Jakubowicz, I. and Gevert, T. [2001]. "Effects of Repeated Extrusion on the Properties and Durability of Rigid PVC Scrap". Polymer Degradation and Stability. 73: 93-99.
Wenguang M., La Mantia F. P., [1998], “Processing and Mechanical Properties of Recycled PVC and of Homopolymer Blends with Virgin PVC", Journal of Applied Polymer Science, 59(5), pp 759 – 767.