Thermal conductivity of PP/Al(OH)3/Mg(OH)2 composites |
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| Affiliation: | 1. Unidad de Radiofísica, Hospital Clínico Universitario San Cecilio, E-18016 Granada, Spain;2. Servicio de Radiofísica y Protección Radiológica, Complejo Hospitalario Universitario de Gran Canaria Dr. Negrín, E-35010 Las Palmas de Gran Canaria, Spain;3. Unidad de Radiofísica en Radioterapia, Hospital La Fe-IRIMED, E-46026 Valencia, Spain;4. Departamento de Física Atómica, Molecular y Nuclear, Universidad de Granada, E-18071 Granada, Spain;1. Department of Chemistry, Lishui University, Lishui 323000, PR China;2. School of Chemistry and Chemical Engineering, Southeast University, Nanjing 211189, PR China;3. Jiangsu Optoelectronic Functional Materials and Engineering Laboratory, Nanjing 211189, PR China;1. Univ.Lille, CNRS, UMR 8207, UMET, Unité Matériaux et Transformations, 59 000 Lille, France;2. Schneider Electric, Technopole 38 TEC, 28, rue Henri Tarze, 38050 Grenoble, France;1. State Key Laboratory of Structural Analysis for Industrial Equipment, School of Aeronautics and Astronautics, Dalian University of Technology, Dalian 116024, PR China;2. National Key Laboratory of Science and Technology on Advanced Composites in Special Environments, Harbin Institute of Technology, Harbin 150001, PR China;1. Department of Chemical and Biological Engineering, University of Idaho, Moscow, ID 83844, USA;2. School of Mechanical, Industrial and Manufacturing Engineering, Oregon State University, Corvallis, OR 97331, USA;3. Idaho National Laboratory, Idaho Falls, ID 83415, USA |
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| Abstract: | Polypropylene (PP) composites filled with aluminum hydroxide (Al(OH)3) and magnesium hydroxide (Mg(OH)2) were prepared using a twin-screw extruder. The effective thermal conductivity (keff) of the composites was measured by means of a thermal conductivity instrument under different testing temperatures. The results showed that the values of keff increased quickly with an increase the volume fraction (?f) of Al(OH)3/Mg(OH)2 powder when ?f was less than 7.1%, then keff increased slightly as ?f was varying from 7.1% to 13.3%, while the values of keff increased obviously when ?f was more than 13.3%. Under the same conditions, the values of keff increased nonlinearly with increasing the diameter (d) of the Al(OH)3/Mg(OH)2 powder. The values of keff of the composites increased somewhat with a rise of test temperature. On the basis of the experimental results, the thermal conduction mechanisms of the composite were analyzed and discussed. |
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