Surface Regulation of Iron Phosphonate to Achieve Nanoscale Dispersion in Aqueous Flame-retardant System and Promote Carbonization of Cotton Fabric 


Vol. 22,  No. 9, pp. 2635-2646, Sep.  2021
10.1007/s12221-021-0003-4


PDF
  Abstract

The nano-synergist of metal organic phosphonate can promote the catalytic charring efficiency of phosphoruscontaining flame retardant systems, but easy aggregation made it difficult to form a uniform dispersion and even distribution in the matrix. Herein, the organic iron phosphonate containing carboxyl and hydroxyl groups in the molecular structure (FeP) was firstly designed and synthesized. Then, FeP achieved nano-dispersion in APP aqueous solution at the molecular level through hydrogen bonding interaction between the carboxyl group and amino group, and the stable nano-dispersion (FeP/ APP) was prepared. Next, intumescent flame-retardant coating (FeP/APP/PEI) was deposited on cotton fabrics using layerby- layer assembly of FeP/APP and polyethyleneimine (PEI). The limiting oxygen index (LOI) of FeP/APP/PEI-4BL coated cotton increased to 28.0 %, which was 57.3 % higher than that of uncoated cotton. The char residues after cone calorimeter test (CCT) increased from 0 % to 18.8 %. The peak of heat release rate (pHRR) and total heat release (THR) dramatically decreased by 94.8 % and 81.0 %, respectively. The thermogravimetric coupled with Fourier transform infrared analysis (TGIR) test indicated that the superior flame retardancy was attributed to the synergistic catalytic carbonization of nano-dispersed FeP and APP. The promotion of fire safety was ascribed to the formation of continue and protective char layer in condensed phase. Our work developed an aqueous suspension flame retardant system in which synergist could be uniformly dispersed at the nanometer level. It is especially suitable for promoting the catalytic carbonization and fire safety of cellulose-containing products.

  Statistics
Cumulative Counts from November, 2022
Multiple requests among the same browser session are counted as one view. If you mouse over a chart, the values of data points will be shown.


  Cite this article

[IEEE Style]

S. R. o. I. P. t. A. N. D. i. A. F. S. a. P. C. o. C. Fabric, "Surface Regulation of Iron Phosphonate to Achieve Nanoscale Dispersion in Aqueous Flame-retardant System and Promote Carbonization of Cotton Fabric," Fibers and Polymers, vol. 22, no. 9, pp. 2635-2646, 2021. DOI: 10.1007/s12221-021-0003-4.

[ACM Style]

Surface Regulation of Iron Phosphonate to Achieve Nanoscale Dispersion in Aqueous Flame-retardant System and Promote Carbonization of Cotton Fabric. 2021. Surface Regulation of Iron Phosphonate to Achieve Nanoscale Dispersion in Aqueous Flame-retardant System and Promote Carbonization of Cotton Fabric. Fibers and Polymers, 22, 9, (2021), 2635-2646. DOI: 10.1007/s12221-021-0003-4.

Search
(IN TITLE, AUTHOR, ABSTRACT,KEYWORDS)

Advanced Search ▼

POPULAR KEYWORDS
(TOP 10 KEYWORDS)

Recent Publications
(LAST 3 YEARS)

pISSN : 1229 - 9197
eISSN : 1875 - 0052

Impact Factor(2022): 2.5