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Mechanical properties and flame-retardant of PP/MRP/Mg(OH)2/Al(OH)3 composites
Affiliation:1. Research Division of Green Function Materials and Equipment, School of Mechanical and Automotive Engineering, South China University of Technology, Guangzhou 510640, PR China;2. Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Kowloon, Hung Hom, Hong Kong, PR China;1. School of Chemical Engineering and Pharmaceutics, Key Laboratory of Polymer Science and Nanotechnology, Henan University of Science and Technology, Luoyang, Henan 471023, PR China;2. School of Chemistry and Chemical Engineering, Henan University, Kaifeng, Henan 475004, 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. School of Resources and Environmental Engineering, Wuhan University of Technology, Wuhan 430070, China;2. State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei 230026, China;3. College of Environment and Resources, Fuzhou University, Fuzhou 350116, China;1. Shanghai Key Laboratory of Advanced Polymeric Materials, Key Laboratory for Ultrafine Materials of Ministry of Education, School of Materials Science and Engineering, East China University of Science and Technology, Shanghai 200237, China;2. School of Chemical Engineering, Qinghai University, Xining 810016, China
Abstract:The flame retardant and mechanical properties of polypropylene (PP) composites filled with microencapsulated red phosphorus (MRP) and magnesium hydrate (Mg(OH)2)/aluminum hydrate (Al(OH)3) were measured. It was found that the synergistic effects between the MRP and Mg(OH)2/Al(OH)3 on the flame retardant and tensile properties of the composites were significant. The limit oxygen index and smoke density rank of the composites increased nonlinearly while the horizontal combustibility rate decreased nonlinearly with increasing the MRP weight fraction. The Young modulus and the tensile elongation at break increased while the tensile yield strength and tensile fracture strength decreased slightly with increasing the MRP weight fraction. Both the V-notched Izod and Charpy impact strength increased with increasing the MRP weight fraction. Moreover, the tensile yield strength of the composites estimated using an equation published previously was roughly close to the measured data.
Keywords:A  Polymer–matrix composites (PMCs)  B  Thermal properties  B  Mechanical properties  B  Strength  D  Thermal analysis
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