Journal of Textile Research ›› 2021, Vol. 42 ›› Issue (03): 14-20.doi: 10.13475/j.fzxb.20200905907

• Invited Column:Full-process Open Width Printing and Dyeing Technology for Knitted Fabric • Previous Articles     Next Articles

Durable fluoride-free water-repellent finishing of polyamide/cotton blended fabric

LU Xue1, LIU Xiuming1(), FANG Kuanjun1,2, LI Hanyu3, LI Xiang4, GAO Chuang1   

  1. 1. School of Textile Science and Engineering, Tiangong University, Tianjin 300387, China
    2. School of Textiles and Clothing, Qingdao University, Qingdao, Shandong 266071, China
    3. China Textile Academy, Beijing 100025, China
    4. Beijing CTA Textile Chemicals Co., Ltd., Beijing 100176, China
  • Received:2020-09-22 Revised:2020-12-21 Online:2021-03-15 Published:2021-03-17
  • Contact: LIU Xiuming E-mail:liuxiuming@tiangong.edu.cn

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Abstract:

In order to meet the special requirements of polyamide/cotton blended fabrics for outdoor sports end-uses, the blended fabrics were coated with fluorine-free water-repellent agent (CWR-9A), and an adhesive was added to further improve the adhesion fastness between the water-repellent and the fabric. The effect of water-repellent mass concentration, baking time, baking temperature, adhesive type, different volume ratios of adhesives and CWR-9A, washing times were studied on water-repellent treated fabrics. For the polyamide/cotton blended fabrics, the optimal water-repellent finishing process is 120 g/L CWR-9A, temperature at 170 ℃, baking time duration 90 s, and the volume ratio of BD-01 to CWR-9A is 1∶20. The surface structure and morphology of the water-repellent agent and treated fabric were characterized, and the contact angle and water-repellent grade of the treated fabric were measured. The results indicate that adhesion fastness between polyamide/cotton blended fabrics treated with adhesive BD-01 and water repellent CWR-9A is significantly improved. The maximum contact angle is 138°, and the water-repellent grade reaches level 5.

Key words: fluorine-free water-repellent agent, polyamide/cotton blended fabric, adhesive, water repellent finishing, adhesion fastness

CLC Number: 

  • TS195.2

Fig.1

Particle size distribution of fluorine-free water-repellent CWR-9A"

Fig.2

Effect of fluorine-free water-repellent CWR-9A mass concentration on contact angle of polyamide/cotton blended fabric"

Fig.3

Effect of baking temperature on contact angle of polyamide/cotton blended fabric finished by CWR-9A"

Fig.4

Effect of baking time on contact angle of polyamide/cotton blended fabric finished by CWR-9A"

Tab.1

Water-repellency of polyamide/cotton blended fabric finished by CWR-9A before and after washing"

织物 接触角/(°) 拒水等级/级
洗涤前 135 4
洗涤1次后 129 0

Tab.2

Effect of adhesive type on contact angle of polyamide/cotton blended fabric finished by CWR-9A"

黏合剂种类 接触角/(°)
468 129
468B 127
1901R 132
3602 131
FK-C —
DF-891B 136
BD-01 138
TF-313E —

Fig.5

Effect of volume ratio of BD-01 and CWR-9A on contact angle of polyamide/cotton blended fabric"

Tab.3

Effect of washing times on contact angle of polyamide/cotton blended fabric finished by BD-01 and CWR-9A"

水洗次数 水洗时间/min 接触角/(°)
1 30 137
2 60 135
3 90 133
4 120 132
5 150 130

Tab.4

Water repellency level of polyamide/cotton blended fabric under different finishing conditions"

织物类型 拒水等级/级
原布 0
CWR-9A整理 4
CWR-9A整理后水洗 0
BD-01与CWR-9A整理 5
BD-01与CWR-9A整理后水洗 4~5

Fig.6

SEM images of polyamide/cotton blended fabrics(×1 000). (a)Untreated fabric; (b)Treated fabric with CWR-9A; (c)Treated fabric with CWR-9A after washing;(d)Treated fabric with BD-01 and CWR-9A; (e)Treated fabric with BD-01 and CWR-9A after washing"

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