Processing and property improvement of polymeric composites with added ZnO nanoparticles through microinjection molding

• Published in: Journal of applied polymer science Vol. 102; no. 6; pp. 6009 - 6016
• Main Authors: Huang, C. K., Chen, S. W., Wei, W. C. J.
• Format: Journal Article
• Language: English
• Published: Hoboken Wiley Subscription Services, Inc., A Wiley Company 15.12.2006; Wiley
• Subjects: Application fields; Applied sciences; Composites; Exact sciences and technology; Forms of application and semi-finished materials; microgear; microinjection molding; nanofiller; Polymer industry, paints, wood; polypropylene; Technology of polymers; wear; zinc oxide; Strengthening; Propylene polymer; Semiconducting ceramics; Mechanical properties; wear; Dispersion reinforced material; Zinc Oxides; polypropylene; Processability; micro- gear; Experimental study; Property processing relationship; Oxide ceramics; Gear; Composite material; zinc oxide; Injection molding; Olefin polymer; Nanocomposite; Technological properties; Wear resistance; Application; microinjection molding; nanofiller
• ISSN: 0021-8995; 1097-4628
• DOI: 10.1002/app.25195

The use of nanoparticulates in polymeric materials has become a potential alternative for organic–inorganic composite materials because of their versatility in property modification and ease of batch fabrication. This paper investigates the kneading and mechanical properties of polypropylene (PP) with added nano‐ZnO powder in sizes of 10–30 nm, through batch kneading and microinjection molding processes. The results show that the PP microgears with added ZnO nanoparticles are well replicated with clear structural definition. The resulting composites with a small amount of nanofiller added exhibit significant improvement in wear resistance and mechanical properties. The possible strengthening and wearing mechanisms is discussed based on the investigation of the worn and fractured surfaces of the composites. © 2006 Wiley Periodicals, Inc. J Appl Polym Sci 102: 6009–6016, 2006