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Study on Synergistic Retarding Effect of Intumescent Flame Retardant and Organic Montmorillonite on Polypropylene

Xiangdong Wang

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Abstract

Polypropylene/intumescent flame retardant /organic montmorillonite(PP/IFR/OMMT) composites were prepared by direct melting intercalation.The synergistic flame retarding effect of OMMT and IFR was investigated.The composite was characterized by X-ray diffraction,limiting oxygen index,thermal analysis,etc.It was found that the layers of OMMT were intercalated by PP chain.There was a clear synergistic retarding effect between OMMT and IFR.When 2 phr of OMMT was introduced,the limiting oxygen index was 30 %,and the carbon residue increased obviously.With increasing contents of OMMT,the tensile strength,bending strength and impact strength of composites increased,and then decreased.When 3 phr of OMMT was introduced,the tensile strength,bending strength and impact strength of composites reached the maximum value.

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What this paper is about

Polypropylene/intumescent flame retardant /organic montmorillonite(PP/IFR/OMMT) composites were prepared by direct melting intercalation.The synergistic flame retarding effect of OMMT and IFR was investigated.The composite was characterized by X-ray diffraction,limiting oxygen index,thermal analysis,etc.It was found that the layers of OMMT were intercalated by PP chain.There was a clear synergistic retarding effect between OMMT and IFR.When 2 phr of OMMT was introduced,the limiting oxygen index was 30 %,and the carbon residue increased obviously.With increasing contents of OMMT,the tensile strength,bending strength and impact strength of composites increased,and then decreased.When 3 phr of OMMT was introduced,the tensile strength,bending strength and impact strength of composites reached the maximum value.

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Available abstract

Polypropylene/intumescent flame retardant /organic montmorillonite(PP/IFR/OMMT) composites were prepared by direct melting intercalation.The synergistic flame retarding effect of OMMT and IFR was investigated.The composite was characterized by X-ray diffraction,limiting oxygen index,thermal analysis,etc.It was found that the layers of OMMT were intercalated by PP chain.There was a clear synergistic retarding effect between OMMT and IFR.When 2 phr of OMMT was introduced,the limiting oxygen index was 30 %,and the carbon residue increased obviously.With increasing contents of OMMT,the tensile strength,bending strength and impact strength of composites increased,and then decreased.When 3 phr of OMMT was introduced,the tensile strength,bending strength and impact strength of composites reached the maximum value.

Key concepts: Limiting oxygen index, Materials science, Fire retardant, Polypropylene, Intumescent, Ultimate tensile strength, Composite material, Montmorillonite

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Study on Synergistic Retarding Effect of Intumescent Flame Retardant and Organic Montmorillonite on Polypropylene — Research Paper | ScholarLens