Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (07): 25-30.doi: 10.13475/j.fzxb.20200905206

• Invited Column: New Flame Retardant Technology for Textile Materials • Previous Articles     Next Articles

Preparation and properties of Lyocell fibers and fabrics modified with new phytic acid based flame retardant

LIN Shenggen1, LIU Xiaohui1(), SU Xiaowei1, HE Ju1, REN Yuanlin2   

  1. 1. School of Materials Science and Technology, Tiangong University, Tianjin 300387, China
    2. School of Textile Science and Technology, Tiangong University, Tianjin 300387, China
  • Received:2020-09-19 Revised:2021-03-17 Online:2021-07-15 Published:2021-07-22
  • Contact: LIU Xiaohui E-mail:liuxiaohui@tiangong.edu.cn

RichHTML

29

PDF (PC)

236

Abstract:

In order to improve the flame retardancy of Lyocell fibers and fabrics, an intumescent flame retardant was prepared by reaction of phytic acid, a natural phosphorus-rich compound, with neopentyl glycol and urea, which was applied to the finishing of Lyocell fibers and fabrics. Using Fourier transform infrared spectrometer, thermogravimetric analyzer and scanning electron microscopy, the structure, thermal stability and surface morphology of the flame retardant Lyocell fibers were studied. The flame retardant properties of the treated Lyocell fabrics were studied through vertical combustion, cone calorimetric and limiting oxygen index tests. The results show that the initial decomposition temperature of Lyocell fibers after flame retardant treatment is decreased by 177.1 ℃, and the carbon residue increases by 21% at 800 ℃. The total heat release, peak heat release rate and average heat release rate are decreased by 76.9%, 84.0%, and 70.6%, respectively. The limit oxygen index (LOI) was increased from 17.0% to 47.6%. After 25 times of washing, the LOI dropped to 28.8%, but still has decent flame retardant performance.

Key words: flame retardant fiber, phytic acid, Lyocell fiber, intumescent flame retardant, decomposition temperature, flame retardant performance

CLC Number: 

  • TQ317

Fig.1

Preparation process of eco-friendly flame retardant"

Fig.2

FT-IR spectra of flame retardant"

Fig.3

FT-IR spectra of fibers"

Fig.4

TG (a) and DTG (b) curves of fibers under nitrogen atmosphere"

Tab.1

Decomposition temperature and carbon residue of fiber before and after treatment under nitrogen atmosphere"

样品 T5%/℃ T50%/℃ Tmax/℃ 800 ℃时残炭量/%
未处理 309.5 354.9 377.3 16.4
处理后 132.4 376.5 281.2 37.5

Fig.5

SEM images of untreated fibers and treated fibers. (a) Untreated fibers (×1 000); (b) Untreated fibers (×2 500);(c) Treated fibers (×1 000); (d) Treated fibers (×2 500); (e) Treated fibers after 25 washing cycles (×1 000);(f) Treated fibers after 25 washing cycles (×2 500); (g) Treated fibers after burning (×1 000);(h) Treated fibers after burning (×2 500)"

Fig.6

Vertical burning picture of untreated fabrics (a),treated fabrics (b) and treated fabrics after 25 washing cycles (c)"

Tab.2

Vertical burning results of different fabrics"

样品 LOI
值/% 		质量增加
率/% 		余焰
时长/s 		燃烧速率/
(mm·s-1) 		炭长/
mm
未处理 17.0 0 5 42.0 0
处理后 47.6 21 0 0.9 32
处理+水洗25次 28.8 5 0 1.3 69

Fig.7

Heat release rate (a) and total heat release (b) curves of fabric samples"

Tab.3

Cone calorimetric data of control and treated Lyocell fabrics"

样品 点火
时间/s 		总热释放量/
(MJ·m-2) 		热释放速率峰
值/(kW·m-2) 		平均热释放速
率/(kW·m-2) 		残炭
量/%
未处理 18.0 16.9 135.7 44.6 4.7
处理后 — 3.9 21.7 13.1 31.5

Fig.8

Raman spectra of residues of treated Lyocell fibers after combustion"

[1] HALL M E, HORROCKS A R, SEDDON H. Flammability of Lyocell[J]. Polymer Degradation and Stability, 1999, 64(3):505-510.
doi: 10.1016/S0141-3910(98)00202-X
[2] REN Y L, LIU Y S, WANG Y, et al. Preparation of durable and flame retardant lyocell fabrics by using a biomass-based modifier derived from vitamin C[J]. Cellulose, 2020, 27(11):6677-6689.
doi: 10.1007/s10570-020-03218-2
[3] 任元林, 张悦, 曾倩, 等. 织物阻燃涂层新工艺的研究进展[J]. 纺织学报, 2017, 38(9):168-173.
REN Yuanlin, ZHANG Yue, ZENG Qian, et al. Research progress on new technology of fabric flame retardant coating[J]. Journal of Textile Research, 2017, 38(9):168-173.
[4] WAN C Y, LIU M S, TIAN P X, et al. Renewable vitamin B5 reactive N-P flame retardant endows cotton with excellent fire resistance and durability[J]. Cellulose, 2020, 27(3):1745-1761.
doi: 10.1007/s10570-019-02886-z
[5] JIA Y L, HU Y W, ZHENG D D, et al. Synjournal and evaluation of an efficient, durable, and environmentally friendly flame retardant for cotton[J]. Cellulose, 2017, 24(2):1159-1170.
doi: 10.1007/s10570-016-1163-z
[6] ZHANG F X, GAO W W, JIA Y L, et al. A concise water-solvent synjournal of highly effective, durable, and eco-friendly flame-retardant coating on cotton fabrics[J]. Carbohydrate Polymers, 2018, 199:256-265.
doi: 10.1016/j.carbpol.2018.05.085
[7] ALONGL J, CARLETTO R A, DI-BLASIO A, et al. DNA: a novel, green, natural flame retardant and suppressant for cotton[J]. Journal of Materials Chemistry A, 2013, 1(15):4779-4785.
doi: 10.1039/c3ta00107e
[8] KONG F B, HE Q L, PENG W, et al. Eco-friendly flame retardant poly(lactic acid) composites based on banana peel powders and phytic acid: flame retardancy and thermal property[J]. Journal of Polymer Research, 2020, 27(8):1-12.
doi: 10.1007/s10965-019-1979-y
[9] ZHANG T, YAN H Q, SHEN L, et al. Chitosan/phytic acid polyelectrolyte complex: a green and renewable intumescent flame retardant system for ethylene-vinyl acetate copolymer[J]. Industrial & Engineering Chemistry Research, 2014, 53(49):19199-19207.
doi: 10.1021/ie503421f
[10] CHENG X W, GUAN J P, TANG R C, et al. Phytic acid as a bio-based phosphorus flame retardant for poly(lactic acid) nonwoven fabric[J]. Journal of Cleaner Production, 2016, 124:114-119.
doi: 10.1016/j.jclepro.2016.02.113
[11] CHENG X W, GUAN J P, KIEKENS P, et al. Preparation and evaluation of an eco-friendly, reactive, and phytic acid-based flame retardant for wool[J]. Reactive & Functional Polymers, 2019, 134:58-66.
[12] CHENG X W, GUAN J P, YANG X H, et al. Phytic acid/silica organic-inorganic hybrid sol system: a novel and durable flame retardant approach for wool fabric[J]. Journal of Materials Research and Technology, 2019, 9(1):700-708.
doi: 10.1016/j.jmrt.2019.11.011
[13] ZIKE O, PLOHL D, OPWIS K, et al. A flame-retardant phytic-acid-based LbL-coating for cotton using polyvinylamine[J]. Polymers, 2020, 12:1-15.
doi: 10.3390/polym12010001
[14] ZHU W J, YANG M Y, HUANG H, et al. A phytic acid-based chelating coordination embedding structure of phosphorus-boron-nitride synergistic flame retardant to enhance durability and flame retardancy of cotton[J]. Cellulose, 2020, 27(8):4817-4829.
doi: 10.1007/s10570-020-03063-3
[15] LIU X H, ZHANG Q Y, CHENG B W, et al. Durable flame retardant cellulosic fibers modified with novel, facile and efficient phytic acid-based finishing agent[J]. Cellulose, 2018, 25(1):799-811.
doi: 10.1007/s10570-017-1550-0
[16] SAHITO I A, SUN K C, ARBAB A A, et al. Integrating high electrical conductivity and photocatalytic activity in cotton fabric by cationizing for enriched coating of negatively charged graphene oxide[J]. Carbohydrate Polymers, 2015, 130:299-306.
doi: 10.1016/j.carbpol.2015.05.010
[17] BAI B C, KIM E A, JEON Y P, et al. Improved flame-retardant properties of Lyocell fiber achieved by phosphorus compound[J]. Materials Letters, 2014, 135:226-228.
doi: 10.1016/j.matlet.2014.07.131
[18] WU T K. Carbon-13 and proton nuclear magnetic resonance studies of cellulose nitrates[J]. Nature, 1980, 13(1):552-555.
[1] LIU Ke, CHEN Shuang, XIAO Ru. Preparation and properties of synergistic flame retardant copolyamide 6 fiber with phosphaphenanthrene group [J]. Journal of Textile Research, 2021, 42(07): 11-18.
[2] GU Weiwen, WANG Wenqing, WEI Lifei, SUN Chenying, HAO Dan, WEI Jianfei, WANG Rui. Influence of carbon dots on properties of flame retardant poly(ethylene terephthalate) [J]. Journal of Textile Research, 2021, 42(07): 1-10.
[3] HUANG Wei, CHENG Chunzu, ZHANG Jiayu, ZHANG Chenxi, CHENG Min, XU Jigang, LIU Yunchong. Preparation and characterization of high fibrillation Lyocell fiber [J]. Journal of Textile Research, 2021, 42(06): 41-45.
[4] WEN Yufeng, MA Xiaopu, SHENG Fangyuan, ZHU Zhiguo. Preparation of microencapsulated intumescent flame retardant and its use in polylactic acid [J]. Journal of Textile Research, 2021, 42(06): 71-77.
[5] YING Lili, LI Changlong, WANG Zongqian, WANG Dengfeng, WU Kaiming, XIE Wei, CHENG Huan. Modification of down by zirconium ion with phytic acid and its thermal insulation performance [J]. Journal of Textile Research, 2020, 41(10): 94-100.
[6] YUAN Wei, YAO Yongbo, ZHANG Yumei, WANG Huaping. Alkaline enzyme treatment process for preparation of Lyocell cellulose pulp [J]. Journal of Textile Research, 2020, 41(07): 1-8.
[7] XU Ailing, WANG Chunmei. Ammonium modification of phytic acid and flame retardant finishing of Lyocell fabric [J]. Journal of Textile Research, 2020, 41(02): 83-88.
[8] CHENG Tong, YAO Yongbo, CHEN Zhongli, JIN Hong, WU Kaijian, WANG Lejun, LIU Yining, ZHANG Yumei. Preparation of flame retardant aromatic polysulfonamide/cellulose fibers with N-methylmorpholine-N-oxide monohydrate as solvent [J]. Journal of Textile Research, 2019, 40(07): 1-76.
[9] . Effect of combined anti-dripping additive on properties of flame resistant polyester [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(08): 15-21.
[10] . Preparation of phase change Lyocell fiber and influence of microcapsule on solvent recovery [J]. JOURNAL OF TEXTILE RESEARCH, 2018, 39(06): 1-5.
[11] . Influence of tris (2-hydroxyethyl) isocyanurate-based intrmescent flame retardants on combustion performance of polymers [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(09): 24-31.
[12] . Status and development research of Lyocell fiber at home and abroad [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(04): 164-170.
[13] . Preparation and properties of carbon black/Lyocell cellulose membrane [J]. JOURNAL OF TEXTILE RESEARCH, 2017, 38(03): 28-32.
[14] . Thermal degradation behaviors and kinetics of intumescent flame-retardant cotton fabric [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(12): 81-86.
[15] . Preparation of 4-Methylmopholine N-oxide based ultrafine carbon black  [J]. JOURNAL OF TEXTILE RESEARCH, 2016, 37(11): 75-79.
Viewed
Full text


Abstract

Cited
  Shared   
  Discussed   
No Suggested Reading articles found!
京ICP备14006648号
Copyright 2021 © Editorial office of Journal of Textile Research
Supported by Beijing Magtech Co.Ltd