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Formation of a Compact Protective Layer by Magnesium Hydroxide Incorporated with a Small Amount of Intumescent Flame Retardant: New Route to High Performance Nonhalogen Flame Retardant TPV
journal contribution
posted on 2014-05-28, 00:00 authored by Kai Lu, Xiaojun Cao, Qiushi Liang, Hengti Wang, Xiaowen Cui, Yongjin LiMagnesium
hydroxide (MH) and an intumescent flame retardant (IFR)
have been incorporated into a thermoplastic vulcanizate (TPV) for
the purpose to fabricate halogen-free flame retardant elastomeric
materials. Significant synergistic effects of MH and IFR have been
observed for the TPV in terms of both flame retardant properties and
mechanical performance. The mechanism of the synergistic effects has
been investigated. The results indicate that a small amount of IFR
accelerates the degradation of the matrix and induces a shrinkage
matrix, leading to a compact and unbroken MgO protective layer. Such
compact MgO layer on the surface of the material prevents the bulk
material from further degradation, and a high flame retardant performance
was achieved. Obviously, this novel flame retardant system paves new
possibility for the high performance nonhalogen flame retardant polymeric
materials and should also be applied to other polymers.
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IFRflame retardant propertiesflame retardant performancenovel flame retardant systemSmall Amountbulk materialperformance nonhalogen flame retardantNew RouteIntumescent Flame RetardantMHHigh Performance Nonhalogen Flame Retardant TPVMagnesium hydroxideMgO layershrinkage matrixMagnesium Hydroxide Incorporatedintumescent flame retardant
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