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2013•Gōsei jushiRequires access

Preparing in Flame Retarding PLA Composite based on Low-temperature Expandable Graphite

Cai Zai-sheng

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Abstract

Ammonium polyphosphate(APP) and self-made low-temperature expandable graphite(LEG) had been used to prepare inflame retarding polylactide composite(FR-PLA),and the flame retardancy and thermal stability under different atmosphere of FR-PLA had been investigated;Under exploring the thermal degradation process and structure of char residue of FR-PLA by means of TGA,IR and XRD,the mechanism of synergistic flame-retardant effect of APP and LEG on PLA was discussed.It was found that APP and LEG had better synergistic flame-retarded effects,when the loading of flame retardant agents was 15 %(APP ∶LEG=1∶2),and the LOI reached 32.1 %,and the burning grading was UL 94 V-0.

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What this paper is about

Ammonium polyphosphate(APP) and self-made low-temperature expandable graphite(LEG) had been used to prepare inflame retarding polylactide composite(FR-PLA),and the flame retardancy and thermal stability under different atmosphere of FR-PLA had been investigated;Under exploring the thermal degradation process and structure of char residue of FR-PLA by means of TGA,IR and XRD,the mechanism of synergistic flame-retardant effect of APP and LEG on PLA was discussed.It was found that APP and LEG had better synergistic flame-retarded effects,when the loading of flame retardant agents was 15 %(APP ∶LEG=1∶2),and the LOI reached 32.1 %,and the burning grading was UL 94 V-0.

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Available abstract

Ammonium polyphosphate(APP) and self-made low-temperature expandable graphite(LEG) had been used to prepare inflame retarding polylactide composite(FR-PLA),and the flame retardancy and thermal stability under different atmosphere of FR-PLA had been investigated;Under exploring the thermal degradation process and structure of char residue of FR-PLA by means of TGA,IR and XRD,the mechanism of synergistic flame-retardant effect of APP and LEG on PLA was discussed.It was found that APP and LEG had better synergistic flame-retarded effects,when the loading of flame retardant agents was 15 %(APP ∶LEG=1∶2),and the LOI reached 32.1 %,and the burning grading was UL 94 V-0.

Key concepts: Ammonium polyphosphate, Fire retardant, Materials science, Composite number, Char, Graphite, Thermal stability, Composite material

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Preparing in Flame Retarding PLA Composite based on Low-temperature Expandable Graphite — Research Paper | ScholarLens