Polymers and Polymer Composites

MECHANICAL PROPERTIES AND FLAME RETARDANCY OF SEBS-BASED COMPOSITES FILLED WITH MAGNESIUM HYDROXIDE

February 1, 2009 By: Wang-Dong Xiao; Kibble K A; Feng Lin Research article

Title: MECHANICAL PROPERTIES AND FLAME RETARDANCY OF SEBS-BASED COMPOSITES FILLED WITH MAGNESIUM HYDROXIDE
Page Range: p.117-125
Author(s): Wang-Dong Xiao; Kibble K A; Feng Lin
File size: 307K
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Journal: Polymers and Polymer Composites
Issue Year: ppc
Volume: 17
Issue No: No.2

Abstract
The flame-retardancy and mechanical properties of styrene-ethylene/butylene-styrene block copolymer(SEBS)-based composites, containing SEBS blended with a paraffinic hydrocarbon extender oil, propylene copolymer and magnesium hydroxide(MH) or silane coupling agent surface-treated magnesium hydroxide(m-MH), were investigated. A maleic anhydride-grafted SEBS(MA-SEBS) was used as a polymer modifier for some composites. As the amount of MH or m-MH increased, the flame-retardancy of composites improved, while the TS and EB decreased, and the melt flow property of the composites became poorer. When the oil-filled SEBS(O-SEBS) was partially replaced by MA-SEBS, the TS of the composites increased and EB decreased. Furthermore, replacement of O-SEBS with MA-SEBS and treating MH with silane coupling agent (simultaneously) improved the TS of the composites by a large margin. The phase structure of the composites was characterised using SEM and this revealed that the particle-matrix interfacial bonding was improved through the addition of MA-SEBS. The stability of the composites was investigated by TGA. 21 refs.


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