Journal
INDUSTRIAL CROPS AND PRODUCTS
Volume 180, Issue -, Pages -Publisher
ELSEVIER
DOI: 10.1016/j.indcrop.2022.114738
Keywords
Cotton fabric; Flame retardant; Multi-amino phosphoramidate; BTCA; Low strength loss
Categories
Funding
- National Natural Science Foundation of China [51991354]
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The use of multi-amino phosphoramide for modifying flame-retardant cotton fabric can decrease strength loss. The study found that cotton fabric coated with BPEI/DP4 showed excellent flame retardancy and washing durability, and significantly inhibited the heat and smoke release during combustion.
To decrease strength loss of flame-retardant cotton fabric using polycarboxylic acid as the crosslinker, a series of multi-amino phosphoramide (BPEI/DPn) was synthesized using branched polyethyleneimine (BPEI) and dimethyl phosphite (DP). The flame retardant coating was fabricated on cotton fabric with the assist of 1,2,3,4-butanetetracarboxylic acid (BTCA). The optimum multi-amino phosphoramide was obtained by investigate the effect of different BPEI/DPn on washing durability and flame retardancy of modified cotton fabrics. The results found that BPEI/DP4 (mole ratio of BPEI and DP was 1:4) coated cotton fabric presented superior flame retardancy with self-extinguishing action and 27.9% of LOI value. Also, this flame-retardant cotton fabric can withstand a certain number of standard washing cycles. The heat and smoke release of cotton fabric during the combustion were significantly inhibited after modification with BPEI/DP4, and HRR value decreased by 35.0% compared with the unmodified cotton. Additionally, BPEI/DP4 can greatly improve the mechanical capability of cotton fabric modified with BTCA, and almost 80% of breaking force can be remained owning to partially neutralizing the acidic circumstance of BTCA solution, which might provide an efficient method to prepare functional cotton fabric with high performance.
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