TY - JOUR
T1 - Preparation and properties of fluoride-free water repellents of waterborne polyurethane stearic acid modified hyperbranched polyester
AU - Liang, Zhu
AU - Ge, Zhen
AU - Yao, Weishang
AU - Wang, Shengpeng
AU - Song, Jinxing
AU - Luo, Yunjun
N1 - Publisher Copyright:
© 2016, BUAA Culture Media Group Ltd. All right reserved.
PY - 2016/7/1
Y1 - 2016/7/1
N2 - The waterborne polyurethane (WPU) was synthesized using hydroxy-terminated polydimethylsiloxane(number-average molecular weight is 2 000), trimethylolpropane (TMP), N-methyldiethanolamine (N-MDEA) and toluene diisocynate (TDI) etc. as raw materials. To introduce the hydrophobic branched chain, hydroxy-terminated hyperbranched polyesters were modified by stearic acid, hyperbranched polyesters end-capping with stearic acid were obtained. The composites consisting of WPU and stearic acid modified hyperbranched polyesters (SA-HBPE-3) were compounded and appled to fabric. The structures of WPU and SA-HBPE-3 before and after modification were characterized by infrared spectroscopy. The effect laws of SA-HBPE-3 content on water resistance, surface energy and water repellents of SA-HBPE-3/WPU film were studied by static water contact angle, water absorption rate and application test. The results show that when the SA-HBPE-3 content increases from 0 to 30wt%, the water absorption rate of SA-HBPE-3/WPU film reduces to 6.63%, and the static water contact angle of coating fabric rises to 135.3°. The water resistance of SA-HBPE-3/WPU films and the water repellency of coating fabric increase with the addition of SA-HBPE-3. When the SA-HBPE-3 content is 20wt%, the waterproof performance evaluation gets the highest 90 points.
AB - The waterborne polyurethane (WPU) was synthesized using hydroxy-terminated polydimethylsiloxane(number-average molecular weight is 2 000), trimethylolpropane (TMP), N-methyldiethanolamine (N-MDEA) and toluene diisocynate (TDI) etc. as raw materials. To introduce the hydrophobic branched chain, hydroxy-terminated hyperbranched polyesters were modified by stearic acid, hyperbranched polyesters end-capping with stearic acid were obtained. The composites consisting of WPU and stearic acid modified hyperbranched polyesters (SA-HBPE-3) were compounded and appled to fabric. The structures of WPU and SA-HBPE-3 before and after modification were characterized by infrared spectroscopy. The effect laws of SA-HBPE-3 content on water resistance, surface energy and water repellents of SA-HBPE-3/WPU film were studied by static water contact angle, water absorption rate and application test. The results show that when the SA-HBPE-3 content increases from 0 to 30wt%, the water absorption rate of SA-HBPE-3/WPU film reduces to 6.63%, and the static water contact angle of coating fabric rises to 135.3°. The water resistance of SA-HBPE-3/WPU films and the water repellency of coating fabric increase with the addition of SA-HBPE-3. When the SA-HBPE-3 content is 20wt%, the waterproof performance evaluation gets the highest 90 points.
KW - Compounding
KW - Fabric
KW - Hyperbranched polyester
KW - Static water contact angle
KW - Water repellents
KW - Waterborne polyurethane
UR - http://www.scopus.com/inward/record.url?scp=84979702288&partnerID=8YFLogxK
U2 - 10.13801/j.cnki.fhclxb.20151008.003
DO - 10.13801/j.cnki.fhclxb.20151008.003
M3 - Article
AN - SCOPUS:84979702288
SN - 1000-3851
VL - 33
SP - 1429
EP - 1436
JO - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
JF - Fuhe Cailiao Xuebao/Acta Materiae Compositae Sinica
IS - 7
ER -