Persistently flame-retardant flexible polyurethane foams by a novel phosphorus-containing polyol

By Wenhui Rao, Huaxiu Xu, Ying-Jun Xu, Min Qi, Wang Liao, Shimei Xu, Yu-Zhong Wang. Chemical Engineering Journal, 2018

186 citations recorded by the source corpus.

Abstract To overcome the poor compatibility, easy migration of additive flame retardants, a novel polyester polyol (DMOP) was synthesized from dimethyl methylphosphonate and diethanol amine through transesterification and used in the foaming formula to prepare inherent flame-retardant flexible polyurethane foams (FPUFs). DMOP mainly play soft segments in the foams which increases the flexibility and elongation at break. With a low incorporation amount of 10 php (ca. 6.3 wt%), the resultant FPUF can pass vertical burning test. More importantly, accelerated ageing tests at 140 °C for 64 h indicate the persistent flame retardancy of DMOP for FPUF. The thermogravimetric analysis (TGA) results reveal their lower thermal stability than that of ordinary polyurethane. The corresponding flame-retardant mechanism of DMOP-containing FPUFs is investigated by Pyrolysis gas chromatography and mass spectrometry (Py-GC/MS) and FTIR, which indicates the phosphorus in DMOP mainly played their role in the vapor phase. This work thus offers a facile route for preparing FPUFs with persistent, efficient flame retardancy.

Subfields: Polymers and Plastics, Process Chemistry and Technology

View Paper: https://www.semanticscholar.org/paper/5c4f63dbf98afe025488c353edc102a8f53bf9c5

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In Polymers and Plastics

  1. A. Barros-Timmons
  2. Artur Ferreira
  3. N. Gama

In Process Chemistry and Technology

  1. A. Barros-Timmons
  2. Artur Ferreira
  3. N. Gama

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