TY - JOUR
T1 - Preparation and properties of waterborne polyurethane modified by aminoethylaminopropyl polydimethylsiloxane for fluorine-free water repellents
AU - Zhang, Wenguo
AU - Zou, Xiaobin
AU - Liu, Xiaoli
AU - Liang, Zhu
AU - Ge, Zhen
AU - Luo, Yunjun
N1 - Publisher Copyright:
© 2019 Elsevier B.V.
PY - 2020/2
Y1 - 2020/2
N2 - Waterborne polyurethane (WPU) prepolymers were firstly synthesized by toluene diisocynate (TDI), trimethylolpropane (TMP), polydimethylsiloxane (PDMS), N-methyldiethanolamine (N-MDEA) and glycerin monostearate (GMS). Then the prepolymers were chain-extended by aminoethylaminopropyl polydimethylsiloxane (AEAPS) to obtain fluorine-free water repellents. In this paper, the structure of AEAPS-modified waterborne polyurethane (AEWPU) was characterized, and the influence of different AEAPS contents on stability, particle size and viscosity of AEWPU, the waterproof performance, surface energy, contact-angle hysteresis and morphology of the AEWPU films. The application properties of the fabrics finished by AEWPU, the elements distribution of the film and the finished fabric were also discussed. The optimum AEAPS content of the water repellent was 20 wt%, then the highest score of 90+ was obtained.
AB - Waterborne polyurethane (WPU) prepolymers were firstly synthesized by toluene diisocynate (TDI), trimethylolpropane (TMP), polydimethylsiloxane (PDMS), N-methyldiethanolamine (N-MDEA) and glycerin monostearate (GMS). Then the prepolymers were chain-extended by aminoethylaminopropyl polydimethylsiloxane (AEAPS) to obtain fluorine-free water repellents. In this paper, the structure of AEAPS-modified waterborne polyurethane (AEWPU) was characterized, and the influence of different AEAPS contents on stability, particle size and viscosity of AEWPU, the waterproof performance, surface energy, contact-angle hysteresis and morphology of the AEWPU films. The application properties of the fabrics finished by AEWPU, the elements distribution of the film and the finished fabric were also discussed. The optimum AEAPS content of the water repellent was 20 wt%, then the highest score of 90+ was obtained.
KW - Aminoethylaminopropyl polydimethylsiloxane
KW - Modification
KW - Water repellent
KW - Waterborne polyurethane
UR - http://www.scopus.com/inward/record.url?scp=85075467176&partnerID=8YFLogxK
U2 - 10.1016/j.porgcoat.2019.105407
DO - 10.1016/j.porgcoat.2019.105407
M3 - Article
AN - SCOPUS:85075467176
SN - 0300-9440
VL - 139
JO - Progress in Organic Coatings
JF - Progress in Organic Coatings
M1 - 105407
ER -