Journal of Textile Research ›› 2022, Vol. 43 ›› Issue (08): 119-125.doi: 10.13475/j.fzxb.20210206608

• Dyeing and Finishing & Chemicals • Previous Articles     Next Articles

Preparation of polydimethylsiloxane modified waterborne polyurethane acrylate hybrid latex and its applications in pigment printing

XIE Ziwen1,2, LI Jiawei1,2(), WANG Fenping1,2, QI Dongming1,2, YAN Xiaofei1, ZHU Chenkai1, ZHAO Lei3, HE Guiping3   

  1. 1. Zhejiang Provincial Engineering Research Center for Green and Low-Carbon Dyeing & Finishing, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    2. Key Laboratory of Advanced Textile Materials & Manufacturing Technology, Ministry of Education, Zhejiang Sci-Tech University, Hangzhou, Zhejiang 310018, China
    3. Zhejiang Namei Material Technology Co., Ltd., Huzhou, Zhejiang 313301, China
  • Received:2021-02-25 Revised:2022-05-07 Online:2022-08-15 Published:2022-08-24
  • Contact: LI Jiawei E-mail:jiaweili@zstu.edu.cn

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Abstract:

In order to improve the hand feeling, rubbing fastness and other performance of printed fabrics, dihydroxybutyl-terminated polydimethylsiloxane (PDMS) was used as the soft segment of polyurethane (PU) to prepare polydimethylsiloxane modified waterborne polyurethane acrylate (Si–PUA) hybrid latexes via miniemulsion polymerization for applications in pigment printing of polyester fabrics. The effects of PDMS mass fraction on water resistance and thermodynamic properties of the hybrid latex films, as well as the dye depth value, dry and wet rubbing fastness and stiffness of the printed fabric were investigated. The results showed that,compared with polyurethane acrylate (PUA), the water resistance and flexibility of the Si–PUA hybrid latex films are improved. When the mass fraction of PDMS was 20％, the water contact angle of Si–PUA hybrid latex film increased by 56.5％, the storage modulus of Si–PUA hybrid film at –55 ℃ decreased by 45.5％. Moreover, when the prepared Si–PUA latex was used in the pigment printing for polyester fabric, the printed fabric had better color depth and rubbing fastness, as well as the softness close to the bare polyester fabric, which exhibited good wearability.

Key words: hybrid emulsion, polyurethane acrylate, polydimethylsiloxane, pigment printing

CLC Number: 

  • TS193.5

Fig.1

Schematic diagram of Si–PUA hybrid emulsion via miniemulsion polymerization"

Tab.1

Reaction formulations of Si–PUA hybrid emulsion"

试样
编号		 各配方用量/g PDMS质
量分数/％
BA St PDMS PCL IPDI HEMA AIBN HD DBTDL DNS–86
A1 11.4 6.1 — 14.2 3.3 0.3 0.18 1.05 0.05 1.4 0
A2 11.4 6.1 2.4 11.8 3.3 0.3 0.18 1.05 0.05 1.4 7
A3 11.4 6.1 5.3 8.9 3.3 0.3 0.18 1.05 0.05 1.4 15
A4 11.4 6.1 7.1 7.1 3.3 0.3 0.18 1.05 0.05 1.4 20

Fig.2

FT-IR spectra of PUA and Si–PUA hybrid latex film"

Fig.3

Particle size distribution of PUA and Si–PUA hybrid emulsions"

Tab.2

Average particle size and distribution of PUA and Si–PUA hybrid emulsion"

试样编号 平均粒径/nm 粒径分布指数
A1 170.3 0.127
A2 183.1 0.138
A3 135.6 0.121
A4 141.2 0.128

Fig.4

Water contact angle (a) and water absorption ratio (b) of PUA and Si–PUA hybrid films"

Fig.5

Comparative photograph of PUA and Si–PUA hybrid films"

Fig.6

TEM images of cross-sections of PUA andSi–PUA hybrid films"

Fig.7

DMA curves of PUA and Si–PUA hybrid films. (a)Storage modulus; (b) Damping factor"

Tab.3

Storage modulas and glass transition temperature of PUA and Si–PUA hybrid films"

试样编号 储能模量/Pa 玻璃化转变温度/℃
1# 2 005.7 –0.9
2# 1 928.2 –8.6
3# 1 624.3 –10.2
4# 1 092.5 –13.4

Fig.8

SEM images of surface morphology of original polyester fabrics and printed fabrics with different pigment content. (a)Original polyester fabric;(b)Printed fabrics with 1.2％ pigment; (c) Printed fabrics with 2.4％ pigment; (d) Printed fabrics with 3.6％ pigment"

Tab.4

Effect of pigment mass fraction on properties of printed fabric"

有机颜料质量
分数/％		 K/S值 耐干摩擦
色牢度/级		 耐湿摩擦
色牢度/级
1.2 9.7 4~5 4
1.8 10.1 4~5 4
2.4 15.5 4 4~5
3.0 17.2 2~3 3
3.6 19.6 2 2

Tab.5

K/S value, rubbing fastness and relative stiffness of PUA and Si–PUA adhesive printed fabrics"

黏合剂
编号		 PDMS质
量分数/％		 K/S
值		 耐摩擦色牢度/级 相对硬挺
度/％
干 湿
A1 0 17.9 4 3 64.7
A2 7 17.5 4 4~5 57.2
A3 15 16.8 4~5 4 52.7
A4 20 16.2 4~5 5 49.9
涤纶原织物 — — — — 43.8

Fig.9

Photographs of printed fabrics with different pigments"

Tab.6

Effect of different pigments on properties of printed fabrics"

颜料种类 K/S值 耐摩擦色牢度/级 相对硬挺
度/％
干 湿
Xfast Yellow 0962 8.7 4 4 50.5
Xfast Green 8730 19.9 4 3 50.0
Xfast Orange 3100 6.2 4~5 4~5 49.5
Xfast Blue 7080 16.2 4~5 5 49.9
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