Mechanical and thermal properties of muscovite and density polyethylene-reinforced and -toughened polypropylene composites

Abstract

The mechanical and thermal properties of polypropylene (PP)/muscovite/low-density polyethylene (LDPE)/polypropylenegraftmaleic anhydride (PP-g-MAH) ternary composites were investigated. In PP matrix, muscovite, LDPE, and PP-g-MAH were added as strengthening agent, toughening agent, and compatibilizer, respectively. The effects of dosages of the added materials were analyzed. The experimental results show that the optimum recipe of PP/muscovite/LDPE/PP-g-MAH composites is100/10/6/20 (mass ratio). Compared with the pure PP, the mechanical properties of PP/muscovite/LDPE/PP-g-MAH composites, including notched impact strength, Rockwell hardness and flexural strength, are improved. Although tensile strength is slightly decreased, they have better toughness. Filled with muscovite, the heat-resistance and heat-decompostion of the composites are improved.

Keywords

PP / LDPE / muscovite / reinforcement and toughening

References

[1] Fu Y., Li B. Mechanical Properties of Polyethylene/Polypropylene[J]. Modern Plastics Processing And Applications, 2005, 17(4): 12-15.

[2] LISONG DONG, R H OLLEY, D C BASSETT. On Morphology and the Competition between Crystallization and Phase Separation in Polypropylene±polyethylene Blends[J]. Journal of Materials Science, 1998: 4043–4048

[3] Ma Y., Ming Z. Study on the PP/EPDM/Mica Composite[ J]. China Plastics, 1996, 10(1): 10-16.

[4] Yu Y. Study on the Hybrid Composites of Polypropylene[D], 2003 Hangzhou Zhejiang university of Technology

[5] Wang Z. Toughening and Reinforcing of Polypropylene[J]. Journal of Applied Polymer Science, 1996, 60(12): 22-39.

[6] Paula P., Danicl E., Graciela C., . Impact Strength and Morphology of PP/LLDPE/EPDM Blends: Effect of Elastomer Viscosity and Content[J]. Elastomers Plast., 1999, 31(1): 72-82.

[7] Jancar J., Dibenedetto A. T. Effect of Morphology on the Behaviour of Ternary Composites of Polypropylene with Inorganic Fillers and Elastomer Inclusions: Part I-Tensile yield strength[J]. Journal of Materials Science, 1995, 30: 1601-1608.

[8] Jancar J., Dibenedetto A. T. The Mechanical Properties of Ternary Composites of Polypropylene with Inorganic Fillers and Elastomer Inclusions[J]. Journal of Materials Science, 1994, 29: 4651-4658.

[9] Okvno K., TWoodhas R. Effect of Fillers on the Compatibilities of Polymer Blends[J]. Polymer Eng. Science, 1975, 15(4): 308-315.

[10] Pothon R. Particulate-filled Polymer Composite[M], 2003 London Addison Wesley Lonnman Lld 245-287.

[11] Li B., Chen Y., An F. Correlation between the Mechanical Properties and the Melting Flow Rate Ratio of PP/PE Blends[J]. Engineering Plastics Application, 2003, 31(7): 8-11.

[12] Juguang R., Qiang D. Research Advances in Toughening Modification of Polypropylene[J]. Modern Plastics Processing and Applications, 2001, 14(3): 42-46.

[13] Joseph P.V., Joseph K., Thomas S., . The Thermal and Crystallisation Studies of Short Sisal Fiber Reinforced Polypropylene Composites[J]. Compos Part A: Appl. Sci.Manu., 2003, 34: 66-253.

[14] Xing h. D., Zhenzhong Q., Yizhen H. Effect of Hydrolysis Water on the Preparation of Nanocrystal Linetitania Powders Viaasol Gel Process [J]. Mater. Sci. Lett., 1995, 14: 21-23.