Please use this identifier to cite or link to this item: https://hdl.handle.net/11147/2217
Title: Influence of surface modification of fillers and polymer on flammability and tensile behaviour of polypropylene-composites
Authors: Demir, Hasan
Balköse, Devrim
Ülkü, Semra
Demir, Hasan
Balköse, Devrim
Ülkü, Semra
Izmir Institute of Technology. Chemical Engineering
Keywords: Fillers
Coupling agents
Flame retardant-polypropylene
Intumescent
Mechanical properties
Polypropylene
Issue Date: May-2006
Publisher: Elsevier Ltd.
Source: Demir, H., Balköse, D., and Ülkü, S. (2006). Influence of surface modification of fillers and polymer on flammability and tensile behaviour of polypropylene-composites. Polymer Degradation and Stability, 91(5), 1079-1085. doi:10.1016/j.polymdegradstab.2005.07.012
Abstract: An intumescent system consisting of ammonium polyphosphate (APP) as an acid source and blowing agent, pentaerythritol (PER) as a carbonific agent and natural zeolite (clinoptilolite, Gördes II) as a synergistic agent was used in this study to enhance flame retardancy of polypropylene (FR-PP). Zeolite was incorporated into flame retardant formulation at four different concentrations (1, 2, 5, and 10 wt%) to investigate synergism with the flame retardant materials. Filler content was fixed at 30 wt% of total amounts of flame retardant PP composites. Zeolite and APP were treated with two different coupling agents namely, 3-(trimethoxysilyl)-1-propanethiol and (3-aminopropyl)-triethoxysilane for investigation of the influence of surface treatments on mechanical properties and flame retardant performance of composites. Maleic anhydride grafted polypropylene (MAPP) was used for making polypropylene hydrophilic. Flammability of FR-PP composites was measured by the determination of limiting oxygen index (LOI). The LOI values reached to a maximum value of 41% for mercapto silane treated APP:PER (2:1) PP composite containing 5 wt% zeolite. The tensile strength of composites was increased by the addition of MAPP and elongation at break of composites was increased with silane treatments.
URI: http://doi.org/10.1016/j.polymdegradstab.2005.07.012
http://hdl.handle.net/11147/2217
ISSN: 0141-3910
0141-3910
Appears in Collections:Chemical Engineering / Kimya Mühendisliği
Scopus İndeksli Yayınlar Koleksiyonu / Scopus Indexed Publications Collection
WoS İndeksli Yayınlar Koleksiyonu / WoS Indexed Publications Collection

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