Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (10): 107-114.doi: 10.13475/j.fzxb.20200810608

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Flame retardant finishing of cotton fabric with tri-aminopropyl triethoxysilane

LIU Shuping1,2,3, LI Liang1,2,3, LIU Rangtong1,2,3(), HU Zedong1,2,3, GENG Changjun1,2,3   

  1. 1. Zhongyuan University of Technology, Zhengzhou, Henan 450007, China
    2. Henan Provincial Collaborative Innovation Center of Textile and Clothing, Zhengzhou, Henan 450007, China
    3. Henan Provincial Key Laboratory of Functional Textile Materials, Zhengzhou, Henan 450007, China
  • Received:2020-08-31 Revised:2021-07-12 Online:2021-10-15 Published:2021-10-29
  • Contact: LIU Rangtong E-mail:ranton@126.com

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Abstract:

In order to endow cotton fabrics with flame resistance and washability, the flame retardant finishing using tri-aminopropyl triethoxysilane (APTES), ammonium polyphosphate and chitosan was carried out by self-assembly method. The effects of APTES mass fraction on the flame resistance, washability, comfort, physical and mechanical properties of cotton fabrics were analyzed.These results indicate that, with APTES mass fraction increasing,the heat release behavior of finished fabrics gradually eases during the combustion process and the limiting oxygen index increases.When the APTES mass fraction is 13%, the after flame time and afterg low time of vertical combustion reduce to 5.23 s and 2.21 s from 8.15 s and 20.32 s of untreated fabric, respectively. Meanwhile, the residual carbon amount increases to 14.7% from 5.6% of untreated fabric. Although the flame retardant property of cotton fabric decreases after washing treatment, it is still better than that of the untreated fabric.

Key words: flame retardant finishing, layer-by-layer self-assembly, tri-aminopropyl triethoxysilane, cotton fabric, ammonium polyphosphate, chitosan

CLC Number: 

  • TS102.3

Fig.1

Effect of APTES mass fraction on fabric mass gain rate"

Fig.2

Infrared spectra of fabrics assembled by different APTES mass fractions"

Fig.3

Micro-combustion heat release rate curves of fabrics assembled by different APTES mass fractions"

Tab.1

Combustion heat release and thermal stability parameters of fabrics"

APTES质
量分数/%		 HRC/
(J·(g·K ) - 1)		 PHRR/
(W· g - 1)		 THR/
(kJ· g - 1)		 Tmax/
℃		 残炭
量/%
0 234 217 12.2 382.1 5.6
2 288 260 12.1 379.9 10.3
8 259 300 12.8 377.6 12.4
13 229 304 12.5 357.8 14.7

Tab.2

Vertical combustion parameters and LOI value of fabrics before washing"

APTES质量分数/% 续燃时间/s 阴燃时间/s LOI值/%
0 8.15 20.32 18.0
2 6.95 8.26 19.0
5 6.45 8.05 20.0
8 6.43 7.48 20.0
10 6.23 5.14 21.0
13 5.23 2.21 21.0

Fig.4

Carbon residue pictures of fabrics treated by different APTES mass fraction after vertical combustion"

Tab.3

Vertical combustion parameters and LOI value of fabrics after washing"

APTES质量分数/% 续燃时间/s 阴燃时间/s LOI值/%
0 8.15 20.32 18.0
2 7.06 10.27 19.2
5 6.92 9.85 19.0
8 6.81 8.31 19.0
10 6.56 7.56 19.2
13 6.50 6.63 19.5

Fig.5

SEM images of residual carbon by different treatments after vertical combustion (×20 000). (a)Untreated fabric; (b)APTES/APP/CH treated fabric; (c) CH/APP treated fabric"

Fig.6

Contact angle and permeability curves of fabrics assembled by different APTES mass fractions"

Tab.4

Effect of APTES mass fraction on whiteness and breaking strength of fabric"

APTES质量分数/
%		 白度/
%		 断裂强力/N
经向 纬向
0 77.4 364.4 335.6
2 65.7 357.4 326.8
5 62.9 358.5 327.1
8 60.6 359.7 327.9
10 57.8 361.1 329.4
13 55.2 361.9 332.5
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