Flame-retardant and Anti-dripping Properties of Intumescent Flame-retardant Polylactide with Different Synergists

Jing Zhan State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China

Lei Wang State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China; Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, Jiangsu, P.R. China

Ningning Hong State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China

Weizhao Hu State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China

Jian Wang State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China

Lei Song State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China

Yuan Hu State Key Laboratory of Fire Science, University of Science and Technology of China, Hefei, Anhui, P.R. China; Suzhou Key Laboratory of Urban Public Safety, Suzhou Institute for Advanced Study, University of Science and Technology of China, Suzhou, Jiangsu, P.R. ChinaCorrespondence[email protected]

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Abstract

The flame-retardant and anti-dripping properties of biodegradable polylactide (PLA) materials during the combustion process were improved using intumescent flame-retardant (IFR) and different synergists. Organophilic montmorillonite (OMT), zinc borate (ZB), fumed silica (FS), tetraethoxysilane (TEOS) and polytetrafluoroethylene (PTFE) were chosen as the anti-dripping synergists for IFR in flame-retardant PLA. The flammability properties and thermal stability of PLA composites were investigated with UL-94, limiting oxygen index (LOI), thermogravimetric analysis (TGA), melt flow index (MFI), etc. It is found that OMT and ZB are the best anti-dripping synergists for IFR PLA. The anti-dripping mechanisms of all the additives are discussed.

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Color versions of one or more of the figures in the article can be found online at www.tandfonline.com/lpte.

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Flame-retardant and Anti-dripping Properties of Intumescent Flame-retardant Polylactide with Different Synergists

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Flame-retardant and Anti-dripping Properties of Intumescent Flame-retardant Polylactide with Different Synergists

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