Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (09): 107-114.doi: 10.13475/j.fzxb.20210809408

• Textile Engineering • Previous Articles     Next Articles

Preparation and properties of aramid/flame retardant viscose/flame retardant polyamide blended fabrics

CHEN Junxian, LI Weiping, FU Qixuan, FENG Xinxing, ZHANG Hua()   

  1. Systems Engineering Institute, Academy of Military Sciences, Beijing 100010, China
  • Received:2021-08-24 Revised:2021-11-10 Online:2022-09-15 Published:2022-09-26
  • Contact: ZHANG Hua E-mail:zh_ioqet@163.com

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Abstract:

In order to obtain fabrics with long-term flame retardancy, which are strong, wear-resistant and with satisfactory wearability, aramid 1414, flame retardant viscose and flame retardant polyamide were blended for producing woven flame retardant fabrics. The influence of fiber blend ratio, strand twist, fabric structure and adhesive types on the mechanical properties, flame retardancy and color fastness of the fabric was discussed. The results show that the aramid 1414/flame retardant viscose/flame retardant polyamide blend ratio 30/45/25 leads to optimal mechanical properties and flame retardancy. Compared with the fabric using aramid/flame retardant viscose blended yarn, the 3-component yarn demonstrates a 56% increase in breaking strength, 58% increase in abrasion resistance. The mechanical properties of the yarn are improved as the twist level increases and peak at 680 twist/m, but decrease with further increase of yarn twist. The flame retardancy and mechanical properties of the fabric with twill weave are better than that of fabrics with plain weave and satin weave. By using non-ionic acrylate copolymer G-BD as binder in printing paste, the color fastness grade of the high-strength, wear-resistant and flame retardant fabric can be kept above grade 2 after washing for 20 times.

Key words: aramid, flame retardant viscose, flame retardant polyamide, blended fabric, flame retardancy, wearability, functional textiles

CLC Number: 

  • TS155.6

Tab.1

Fiber basic properties"

纤维
材料编号		 断裂强度/
(cN·dtex-1)		 断裂伸长
率/%		 回潮率/% 极限氧
指数/%
M 19.8 10.0 7.0 34
FR 2.5 11.8 13.0 30
ST 4.6 42.8 3.5 30

Tab.2

Chemical composition of adhesives"

黏合剂型号 类型 化学组成
JJS 阴离子型 丙烯酸酯共聚物
301A 阴离子型 丙烯酸酯共聚物
PBC 阴离子型 丙烯酸酯共聚物
FHN 阴离子型 丁二烯丙烯腈共聚物
G-BD 非离子型 丙烯酸酯共聚物
GW 非离子型 丙烯酸酯共聚物
PNP 非离子型 丙烯酸酯共聚物

Tab.3

Blending ratio of yarn"

样品编号 M比例/% FR比例/% ST比例/%
1 25 65 15
2 25 55 20
3 25 50 25
4 25 45 30
5 25 40 35
6 15 60 25
7 20 55 25
8 30 45 25
9 35 40 25
10 30 70 —
11 40 60 —
12 50 50 —
13 60 40 —
14 70 30 —

Tab.4

Formulation of printing paste"

成分 用量(占色浆总量)/%
黏合剂 15.0
涂料 0.8
还原染料 1.2
糊料 34.0
去离子水 49.0

Fig.1

Breaking strength and LOI value of yarns with different blending proportions. (a) M/FR/ST blending yarns(M blending proportion is 25%); (b) M/FR/ST blending yarns(ST blending proportion is 25%); (c) M/FR blending yarns with different blending proportions"

Fig.2

Wear-resisting numbers of yarns with different blending proportions. (a) M/FR/ST blending yarns; (b) M/FR blending yarns"

Fig.3

Breaking strength of different twist yarns"

Tab.5

Mechanical properties and flame retardancy of fabrics A made of yarns with different twists"

纱线捻度/
(捻·m-1)		 密度/(根·(10 cm)-1) 断裂强力/N 撕破强力/N 续燃时间/s 阴燃时间/s 经向损毁
长度/mm
经向 纬向 经向 纬向 经向 纬向
580 250 198 1 263 1 118 113 104 0 0 55
630 250 200 1 359 1 159 110 100 0 0 46
680 248 198 1 466 1 200 106 97 0 0 35
730 250 198 1 439 1 185 93 92 0 0 31
780 250 198 1 392 1 149 87 91 0 0 25

Tab.6

Mechanical properties and flame retardancy of fabrics B made of yarns with different twists"

纱线捻度/
(捻·m-1)		 密度/(根·(10 cm)-1) 断裂强力/N 撕破强力/N 续燃时间/s 阴燃时间/s 经向损毁
长度/mm
经向 纬向 经向 纬向 经向 纬向
580 332 238 2 002 1 295 135 105 0 0 29
630 330 238 2 096 1 456 133 102 0 0 30
680 330 238 2 171 1 560 129 96 0 0 30
730 330 238 2 128 1 492 125 92 0 0 30
780 330 238 2 073 1 455 123 86 0 0 29

Fig.4

Mechanical properties(a) and flame retardancy (b) of fabrics A with different fabric structures"

Fig.5

Mechanical properties(a)and flame retardancy (b) of fabrics B with different fabric structures"

Fig.6

Effect of adhesives on flame retardancy (a) and color fastness grade after washing (b) of fabrics A"

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