Properties and characterization of aluminum hydroxide and barium sulfate filled polypropylene copolymer

Download

143179.pdf

Date

2003

Author

Can, Semra

Metadata

Show full item record

Item Usage Stats

210
views

0
downloads

Flammability of polymers has been receiving much attention with the advancements in the modern polymer industry. The addition of flame retardant fillers to the polymer matrix is a common method to control the flammability of polymers. Different types of additives are employed as flame retardants namely; compounds based on halogens (CI and Br), nitrogen, organophosphorus and inorganics. Among them, Al(OH)3 functions as effective smoke suppressant in addition to reducing polymer burning rate. The objective of this study was to investigate the mechanical and flammability properties of Al(OH)3 and BaS04 filled polypropylene (PP). The improvement in flame retardance generally causes a reduction in strength properties, especially impact strength. BaS04 was added to increase impact strength of filled PP composites. To optimize mechanical and flammability properties filler amount was fixed at 30% by weight. Prepared compositions are: Pure PP, 0% Al(OH)3 (30% BaS04), 10% Al(OH)3, 15% Al(OH)3, 20% Al(OH)3, 30% Al(OH)3. Tensile and impact properties of pure and filled PP were studied. The morphology and thermal behaviors of all compositions were examined with scanning electron microscopy (SEM) and differential scanning calorimetry (DSC), respectively. The 20%A containing composition gave sufficiently good tensile and impact properties. SEM studies showed that presence of aggregated Al(OH)3 particles led to low interfacial adhesion between them and PP ending up with decreased mechanical strength. Flammability tests indicated a decrease in burning rate proportional to Al(OH)3 incorporated.

Subject Keywords

Flammability, PP, Al(OH)3, BaSO4 fillers

URI

https://hdl.handle.net/11511/13203

Collections

Graduate School of Natural and Applied Sciences, Thesis

Suggestions

OpenMETU
Core

Synthesis and Characterization of Zirconium based Bulk Amorphous Alloys Saltoğlu, İlkay; Akdeniz, Mahmut Vedat; Mehrabov, Amdulla (2005-09-28) In recent years, bulk amorphous alloys and nanocrystalline materials have been synthesized in a number of ferrous and non-ferrous based alloys systems, which have gained some applications due to their unique physico-chemical and mechanical properties. In the last decade, Zr-based alloys with a wide supercooled liquid region and excellent glass forming ability have been discovered. These systems have promising application fields due to their mechanical properties; high tensile strength, high fracture toughne...
Simulation of equal channel angular pressing applied to produce structures with ultrafine-sized grains Karpuz, Pinar; Şimşir, Caner; Gür, Cemil Hakan (Inderscience Publishers, 2009-01-01) Severe plastic deformation methods are of great interest in industrial forming applications, as they give rise to significant refinement in microstructures and improvements in mechanical and physical properties. In the 'equal channel angular pressing (ECAP)', which is the most common method for production of ultrafine grained bulk samples, very high plastic strains are introduced into the bulk material without any change in cross section. In this study, the plastic deformation behaviour of the materials sub...
Preparation of epoxy-based composites containing barium metaborate and their characterization Yürekli, Elif; Bayram, Göknur; Department of Chemical Engineering (2014) Epoxy resin is one of the most important thermosetting polymers, widely used in various fields of industry. However, like most of the polymeric materials, epoxy resins are flammable and this restricts their application areas. The purpose of this thesis is to increase flame retardant property of epoxy-based composites using various flame retardant additives mainly including barium metaborate. This thesis consists of three main parts. In the first part, preliminary composites, which containing barium metabora...
Development of porous chitosan-gelatin/hydroxyapatite composite scaffolds for hard tissue-engineering applications Isikli, C.; Hasırcı, Vasıf Nejat; Hasırcı, Nesrin (2012-02-01) Composite scaffolds prepared from natural polymers and hydroxyapatite (HA) are expected to have enhanced osteoconductive properties and as a result gained much attention in recent years for use in bone tissue-engineering applications. Although there are various natural polymers available for this purpose, chitosan (C) and gelatin (G) are commonly studied because of their inherent properties. The aim of this study was to prepare three-dimensional (3D) scaffolds using these two natural polymers and to add eit...
Synthesis and characterization of zirconium based bulk amorphous alloys Saltoğlu, İlkay; Akdeniz, Mahmut Vedat; Department of Metallurgical and Materials Engineering (2004) In recent years, bulk amorphous alloys and nanocrystalline materials have been synthesized in a number of ferrous and non-ferrous based alloys systems, which have gained some applications due to their unique physico-chemical and mechanical properties. In the last decade, Zr-based alloys with a wide supercooled liquid region and excellent glass forming ability have been discovered. These systems have promising application fields due to their mechanical properties; high tensile strength, high fracture toughne...

Citation Formats

S. Can, “Properties and characterization of aluminum hydroxide and barium sulfate filled polypropylene copolymer,” M.S. - Master of Science, Middle East Technical University, 2003.