The Proceedings of Mechanical Engineering Congress, Japan
Online ISSN : 2424-2667
ISSN-L : 2424-2667
2021
Session ID : J031-28
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Tensile properties of shape-controlled talc/polypropylene composites containing small amounts of cellulose nanofibers
*Fumihiko OZAKIKazuya NAGATAKazuaki SANADAYuuki MORIMOTOKouta OGURAYoshihiro TUJITakao IKEDA
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Abstract

This study examines the tensile properties of shape-controlled talc/polypropylene (PP) composites containing small amounts of cellulose nanofibers (CNFs). To form good interface between CNFs and PP, maleic acid polypropylene (MAPP) was filled in the matrix of composites. The surface of CNFs was coated with a hydrophobized agent (HA) that helps CNFs dispersion in PP. CNFs have a length of 10μm or above, and diameters of 20nm. Using twin-screw extruder operating at 150rpm and 200°C, talc/CNFs/MAPP/PP composites was prepared by using melt-kneading. Tensile tests were carried out to assess the effect of shape controls of talc on the tensile properties of talc/PP composites. The effect of shape controls of talc and CNFs content on the tensile properties of talc/CNFs/MAPP/PP composites was also discussed. As a result, the failure strain of shape-controlled talc/PP composites was higher than that of as-milled talc/PP composites though the yield stress was constant. The failure strain of talc/CNF/MAPP/PP composites was improved by adding 0.5wt% CNFs

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