Mechanical properties and flame-retardant of PP/MRP/Mg(OH)2/Al(OH)3composites

J. Z. Liang, J. Q. Feng, Chi Pong Tsui, Chak Yin Tang, D. F. Liu, S. D. Zhang, W. F. Huang

Research output: Journal article publicationJournal articleAcademic researchpeer-review

49 Citations (Scopus)


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)3on 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.
Original languageEnglish
Pages (from-to)74-81
Number of pages8
JournalComposites Part B: Engineering
Publication statusPublished - 15 Mar 2015


  • A. Polymer-matrix composites (PMCs)
  • B. Mechanical properties
  • B. Strength
  • B. Thermal properties
  • D. Thermal analysis

ASJC Scopus subject areas

  • Ceramics and Composites
  • Mechanics of Materials
  • Mechanical Engineering
  • Industrial and Manufacturing Engineering


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