Studies on Friction and Mechanical Properties of High Density Polypropylene (HDPP) Filled with Modified Talc

Abstract:

Talc was modified by aluminate coupling agent (ACA) before filling it into high density polypropylene (HDPP) to prepare talc/HDPP composites. Scanning electron microscopy (SEM), wear testing machine, electronic universal testing machine, and impact testing machine were used to analyze the surface modification and the effects of modified talc on friction and mechanical properties of modified talc/HDPP composites. The results indicate that after modified the lamellar structure of talc particles are open and the dispersion of particles are improved, and the edges and corners of surface become softer. Friction properties indicate that when the talc content is 8 wt%, both µ and K are at a lower value, which show that have better wear resistance. The frictional surface is relatively smooth and no furrow trace has found. Mechanical properties show that with talc content increasing, tensile strength and flexural strength of composites increase.

• Periodical: Advanced Materials Research (Volume 624)
• Pages: 279-282
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.624.279
• Online since: December 2012
• Authors: Feng Zhan, Nan Chun Chen
• Keywords: Friction Properties, HDPP, Mechanical Property, Modification, Talc

References

[1] Z. Yao, Z.Q. Lu, X. Zhao, Synthesis and characterization of high-density polypropylene-grafted polyethylene via a macromolecular reaction and its rheological behavior, J. Appl. Polym. Sci. 111 (2009) 2553-2561.

DOI: 10.1002/app.29229

[2] G. Lefebvre, L. Galet, A. Chamayou, Dry coating of talc particles with fumed silica: Influence of the silica concentration on the wettability and dispersibility of the composite particles, Powder Technolo. 208 (2011) 372-377.

DOI: 10.1016/j.powtec.2010.08.031

[3] H.G.B. Premalal, H. Ismail, A. Baharin, Comparison of the mechanical properties of rice husk powder filled polypropylene composites with talc filled polypropylene composites, Polym. Test. 21 (2002) 833-839.

DOI: 10.1016/s0142-9418(02)00018-1

[4] P. Bacchin, J.-P. Bonino, F. Martin, Surface pre-coating of talc particles by carboxyl methyl cellulose adsorption: Study of adsorption and consequences on surface properties and settling rate, Colloids Surf. A: Physicochem. Eng. Aspects 272 (2006) 211-219.

DOI: 10.1016/j.colsurfa.2005.07.026

[5] B. Suresha, B.N.R. Kumar, Two-body abrasive wear behavior of particulate filled polyamide66/polypropylene nanocomposites, J. Appl. Polym. Sci. 119 (2011) 2292-2301.

DOI: 10.1002/app.32909

[6] A. Almajid, K. Friedrich, J. Floeck, Surface damage characteristics and specific wear rates of a new continuous carbon fiber (CF)/ployetheretherketone (PEEK) composite under sliding and rolling contact conditions, Appl. Compos. Mater. 18 (2011) 211-230.

DOI: 10.1007/s10443-010-9147-x

[7] G. Zhao, T.M. Wang, Q.H. Wang, Studies on wettability, mechanical and tribological properties of the polyurethane composites filled with talc. Appl. Surf. Sci. 258 (2012) 3557-3564.

DOI: 10.1016/j.apsusc.2011.11.113

[8] H.J. Noorina, P. Samayamutthirian, Acid medium sonication: A method for the preparation of low density talc nano-sheets, Powder Technolo. 200 (2010) 87-90.

DOI: 10.1016/j.powtec.2010.02.019

[9] R.S. Hadal, A. Dasari, J. Rohrmann, Effect of wollastonite and talc on the micromechanisms of tensile deformation in polypropylene composites, Mater. Sci. Eng. A 372 (2004) 296-315.

DOI: 10.1016/j.msea.2004.01.003