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The water resistance of surface-modified APP with melamine-TDI in LLDPE

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Abstract

Ammonium polyphosphate (APP) which was surface-modified with melamine (MA) and 2,4-toluene diisocyanate(TDI) in turn was used as flame-retardant in linear low density polyethylene (LLDPE). Its water resistance in LLDPE was respectively evaluated with its water-solubility, the limited oxygen index(LOI) changes and P content changes of the LLDPE which being immersed in water 180 h at room temperature. Its compatibility with LLDPE was observed with scanning electron microscope (SEM). As a result, the water-solubility of the surface-modified APP reduced. When the LLDPE was treated with surface-modified APP, its LOI and P content changes were less than that treated with unmodified-APP after being immersed in water. The surface-modified APP was better compatible with LLDPE than unmodified APP.

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Authors and Affiliations

  1. Heilongjiang Key Laboratory of Molecular Design and Preparation of Flame Retarded Materials, Department of Chemistry, Northeast Forestry University, Harbin, 150040, China

    Cai-Ying Sun, Qing-Bo Zhang & Bin Li

Authors
  1. Cai-Ying Sun
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  2. Qing-Bo Zhang
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  3. Bin Li
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Correspondence to Bin Li.

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Sun, CY., Zhang, QB. & Li, B. The water resistance of surface-modified APP with melamine-TDI in LLDPE. J Polym Res 14, 505–509 (2007). https://doi.org/10.1007/s10965-007-9135-5

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  • DOI: https://doi.org/10.1007/s10965-007-9135-5

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