Advanced short fiber composites with hybrid reinforcement and selective fiber-matrix-adhesion based on polypropylene – Characterization of mechanical properties and fiber orientation using high-resolution X-ray tomography
| Autor: | H.-P. Heim, C. Kahl, Maik Feldmann, P. Sälzer |
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| Rok vydání: | 2018 |
| Předmět: |
Polypropylene
Materials science Composite number Glass fiber Izod impact strength test 02 engineering and technology 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Coupling (electronics) chemistry.chemical_compound Cellulose fiber Brittleness chemistry Mechanics of Materials Ceramics and Composites Fiber Composite material 0210 nano-technology |
| Zdroj: | Composites Part A: Applied Science and Manufacturing. 111:54-61 |
| ISSN: | 1359-835X |
| DOI: | 10.1016/j.compositesa.2018.05.014 |
| Popis: | Composites with two types of reinforcement fibers open a large field of opportunities and combine properties. Glass fibers lead to higher strength and modulus, but they provide a brittle character. In contrast to this, man-made cellulose fiber composites show higher energy absorption and higher elongation-at-break. The aim of this study is to investigate the synergy of those two fiber types in a hybrid compound. Compounds with an overall fiber content of 16 vol% and different ratios of glass and man-made cellulose fibers were prepared with a twin-screw extruder and injection molded to test specimen. Mechanical properties as well as the composite morphology were studied for compounds with selective fiber-matrix-adhesion and without a coupling agent. A bimodal fiber length distribution was found in the hybrid compounds due to the different shortened fiber types. The long man-made cellulose fibers increase the impact strength and influences the fiber orientation in the hybrid. |
| Databáze: | OpenAIRE |
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