Investigation on microstructure and mechanical properties of samples obtained by injection from Arbofill

• Published in: Composites. Part B, Engineering Vol. 47; pp. 126 - 129
• Main Author: Nedelcu, Dumitru
• Format: Journal Article
• Language: English
• Published: Kidlington Elsevier Ltd 01.04.2013; Elsevier
• Subjects: A. Resins; Applied sciences; B. Mechanical properties; B. Microstructure; carbon; D. Electron microscopy; dendrites; Exact sciences and technology; friction; microstructure; Miscellaneous; oxygen; Polymer industry, paints, wood; scanning electron microscopy; temperature; tensile strength; Wood; Wood. Paper. Non wovens; X-ray diffraction; A. Resins; B. Microstructure; B. Mechanical properties; D. Electron microscopy; Mechanical properties; Thermomechanical properties; Experimental study; Wood waste; Tensile strength; Friction coefficient; Injection molding; Recycled material; Lignin derivatives; Tribology
• ISSN: 1359-8368; 1879-1069
• DOI: 10.1016/j.compositesb.2012.11.023

The use of recyclable materials has become an important trend in all activity areas, reason why the arbofill, arboblend and arboform are the materials that will replace plastic in the near future. The tensile strength reached (28.05±1.09) MPa at 23°C and (13.50±0.23) MPa at 60°C, respectively and the results are not surprising because at room temperature (23°C), the material had a brittle behavior, while with the increasing in temperature this feature has decreased. The friction coefficient by disk rotation registers a slight decrease approximately in the first 25s and then throughout the whole tested period it registers a slight increase. The average friction coefficient by disk rotation is 0.145. The variation of the friction coefficient by oscillation is similar, whereas the average friction coefficient is 0.1523. As the diffraction analysis shows, the material does not have a complete amorphous structure and it has several typical phases between 15° and 30°. The specific diffraction technique used was X-ray diffraction. The SEM analysis shows a uniform structure with unidirectional dendritical ramifications and small secondary dendrites and the chemical elements range indicate a high presence, in mass and atomic percentages, of the carbon followed by the oxygen.