Materials characterization of advanced fillers for composites engineering applications

Nanotechnology Reviews

Waters Kristian E.¹  Lapčík Lubomír²  Lapčíková Barbora²  Vlček Jakub²  Otyepková Eva²  Greenwood Richard W.³  Vašina Martin⁴  Hui David⁵ 

[1] Department of Mining and Materials Engineering, McGill University, M.H. Wong Building, 3610 University Street, Montreal, H3A 0C5, Québec, Canada;Regional Centre of Advanced Technologies and Materials, Department of Physical Chemistry, Faculty of Science, Palacky University, 17. Listopadu 12, 771 46Olomouc, Czech Republic;School of Chemical Engineering, University of Birmingham, Edgbaston, Birmingham, B15 2TT, BirminghamUnited Kingdom of Great Britain and Northern Ireland;Tomas Bata University in Zlin, Faculty of Technology, Nam. T.G. Masaryka 275, 760 01Zlin, Czech Republic;University of New Orleans, Composite Materials Research Laboratory, 2000 Lakeshore Dr., New Orleans, LA 70148, LouisianaUnited States of America;

关键词: mineral fillers;    surface properties;    sound absorption;    mechanical properties;    powder rheology;   

DOI  :  10.1515/ntrev-2019-0045

来源: DOAJ

【 摘 要 】

Four different minerals were investigated; hollow spheres of calcium carbonate, platy mica, needle like wollastonite and glassy perlite and characterized via iGC for surface energy, Freeman powder rheology for flow characterization, cyclic uniaxial die compaction for modulus of elasticity and frequency dependent sound absorption properties. Particle surface energy and particle shape strongly affected the packing density of powder beds. In the case of higher porosity and thus lower bulk density, the powders acoustic absorption was higher in comparison with higher packing density materials. Surface energy profiles and surface energy distributions revealed clear convergence with powder rheology data, where the character of the powder flow at defined consolidation stresses was mirroring either the high cohesion powders properties connected with the high surface energy or powder free flowing characteristics, as reflected in low cohesion of the powder matrix.

【 授权许可】

Unknown