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Effectiveness of cellular injection molding process

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Warianty tytułu
Języki publikacji
EN
Abstrakty
EN
In a study of cellular injection, molding process uses polyvinylchloride PVC. Polymers modified with introducing blowing agents into them in the Laboratory of the Department of Technologies and Materiase of Technical University of Kosice. For technological reasons, blowing agents have a form of granules. In the experiment, the content of the blowing agent (0–2,0% by mass) fed into the processed polymer was adopted as a variable factor. In the studies presented in the article, the chemical blowing agents occurring in the granulated form with a diameter of 1.2 to 1.4 mm were used. The view of the technological line for cellular injection molding and injection mold cavity with injection moldings are shown in figure 1. The results of the determination of selected properties of injection molded parts for various polymeric materials, obtained with different content of blowing agents, are shown in Figures 4–7. Microscopic examination of cross-sectional structure of the moldings were obtained using the author’s position image analysis of porous structure. Based on analysis of photographs taken (Figures 7–9) it was found that the coating containing 1.0% of blowing agents is a clearly visible solid outer layer and uniform distribution of pores and their sizes are similar.
Twórcy
autor
  • Lublin University of Technology, 36 Nadbystrzycka St., 20-618 Lublin, Poland
autor
  • Technical University in Košice, 74 Mäsiarska St., 040 01 Košice, Slovakia
  • Lviv Polytechnic National University, 12 St. Bandery St. , Lviv, Ukraine
Bibliografia
  • 1. Kelvin T. Okamoto.: Microcellular processing. Hanser Publishers, Munich, Germany 2003.
  • 2. Bociąga E., Palutkiewic P.: Wpływ zawartości poroforu i warunków wtryskiwania na wybrane właściwości i stan powierzchni wyprasek z polipropylenu. Polimery, 1, 2012, 38-42.
  • 3. Dulebová Ľ., Greškovič F.: Influence of regrind on properties of plastics processing by injection moulding. Materials Engineering - Materiálové inžinierstvo,18, 44, 2011.
  • 4. Greškovič F., Dulebová Ľ., Varga J.: Technológie spracovania plastov. Vstrekovanie. Plastics Processing. Technologies. Injection Moulding, SjF TU v Košiciach, Košice 2010.
  • 5. Matuana LM, Park CB, Balatinecz JJ.: Structures and mechanical properties of microcellular foamed polyvinyl chloride. Cellular polymers, 17, 1998, 1-16.
  • 6. Bledzki K., Kirschling H., Steinbichler G., Egger P.: Polycarbonate microfoams with a smooth surface and higher notched impact strength. Journal of Cellular Plastics, 40, 2004, 489–496.
  • 7. Garbacz T.: Properties of triple-layered PVC coatings synthesized in the micropore coextrusion method. Polimery, 56, 2011, 129-134.
  • 8. Моравський В. С., Красінський В. В., Сікора Я., Кшижак А., Суберляк О. В.: Хімічна промисловість України, 6, 46, 2011.
  • 9. Guo M.C., Heuzey M.C., Carreau P.J.: Cell structure and dynamic properties of injection molded polypropylene foams. Polymer Engineering and Science, 47, 2007, 1070–1081.
  • 10. Klepka T., Dębski H., Rydarowski H.: Characteristic of high-density polyethylene and its properties simulation with use of finite element method. Polimery, 54, 2009, 668-673.
  • 11. Zhou Q., Chuan-Bo C.: Exo-endothermic blowing agent and its blowing behavior. Journal of Cellular Plastics, 41, 2005, 225-234.
  • 12. Sikora J.W.: Screw extrusion. In: Sabu T., Yang W. Advances in polymer processing. From macro to nanoscales. Woodhead Publishing Limited. Oxford-Cambridge-New Delhi, United Kingdom 2009.
  • 13. Tor-Świątek A., Samujło B.: Use of thermovision research to analyze the thermal stability of microcellular extrusion process of poly(vinyl chloride). Maintenance and Reliability, 15, 2013, 58-61.
  • 14. Garbacz T., Tor A: Effect of porophor content on the useful properties of external coatings of cables obtained by foaming extrusion. Polimery, 52, 2007, 286-293.
  • 15. PN-EN ISO 527-1 (2010): Plastics. Determination of tensile properties.
  • 16. PN-EN ISO 868 (2003): Plastics and ebonite. Determination of indentation hardness by means of a durometer (Shore hardness).
Typ dokumentu
Bibliografia
Identyfikator YADDA
bwmeta1.element.baztech-176b2d4f-93e7-4398-9dbf-032d08148eea
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