以端羟丙基硅油(数均分子量2000)、三羟甲基丙烷(TMP)、N-甲基二乙醇胺(N-MDEA)和甲苯二异氰酸酯(TDI)等为原料合成水性聚氨酯(WPU)。为了引入疏水支链结构,采用硬脂酸对端羟基超支化聚酯进行端基改性,得到硬脂酸封端的超支化聚酯。将 WPU与硬脂酸改性超支化聚酯(SA-HBPE-3)进行复配,并应用于织物。采用红外光谱对改性前后的 WPU及 SA-HBPE-3的结构进行表征。通过静态水接触角、吸水率及应用测试,研究了 SA-HBPE-3含量对 SA-HBPE-3/WPU胶膜耐水性、表面能及拒水性能的影响规律。结果表明：随着 SA-HBPE-3含量从0增至30wt%,SA-HBPE-3/WPU胶膜的吸水率降至6.63%,涂覆处理织物的静态水接触角升至135.3°。SA-HBPE-3的引入提高了 SA-HBPE-3/WPU胶膜的耐水性和涂覆织物的拒水性。当 SA-HBPE-3含量为20wt%时,拒水效果达到最优值90分。
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 absorp-tion 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.
参考文献
| [1] | Yan H;Kurogi K;Tsujii K.High oil-repellent poly(alkylpyrrole) films coated with fluorinated alkylsilane by a facile way[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,20072/3(2/3):27-31. |
| [2] | Dirk Stanssens;Henk Van den Abbeele;Leo Vonck;Gustaaf Schoukens;Marlies Deconinck;Pieter Samyn.Creating water-repellent and super-hydrophobic cellulose substrates by deposition of organic nanoparticles[J].Materials Letters,201112(12):1781-1784. |
| [3] | Z.H. Fang;H.Y. Duan;Z.H. Zhang;J. Wang;D.Q. Li;Y.X. Huang;J.J. Shang;Z.Y. Liu.Novel heat-resistance UV curable waterborne polyurethane coatings modified by melamine[J].Applied Surface Science: A Journal Devoted to the Properties of Interfaces in Relation to the Synthesis and Behaviour of Materials,201111(11):4765-4768. |
| [4] | García-Pacios, V.;Costa, V.;Colera, M.;Martín-Martínez, J.M..Waterborne polyurethane dispersions obtained with polycarbonate of hexanediol intended for use as coatings[J].Progress in Organic Coatings: An International Review Journal,20112(2):136-146. |
| [5] | Meng, QB;Lee, SI;Nah, C;Lee, YS.Preparation of waterborne polyurethanes using an amphiphilic diol for breathable waterproof textile coatings[J].Progress in Organic Coatings: An International Review Journal,20094(4):382-386. |
| [6] | Tragoonwichian, S.;Kothary, P.;Siriviriyanun, A.;O'Rear, E.A.;Yanumet, N..Silicon-compound coating for preparation of water repellent cotton fabric by admicellar polymerization[J].Colloids and Surfaces, A. Physicochemical and Engineering Aspects,20111/3(1/3):381-387. |
| [7] | Ge, Z.;Luo, Y..Synthesis and characterization of siloxane-modified two-component waterborne polyurethane[J].Progress in Organic Coatings: An International Review Journal,201311(11):1522-1526. |
| [8] | 张怀文;杜淼;王楠;郑强.拒水型有机硅改性聚氨酯嵌段共聚物的合成与表征[J].高分子学报,2013(1):63-69. |
| [9] | Vukovic J;Steinmeier D;Lechner MD;Jovanovic S;Bozic B.Thermal degradation of aliphatic hyperbranched polyesters and their derivatives[J].Polymer Degradation and Stability,20068(8):1903-1908. |
| [10] | 刘晶如;巢玲玲;丁镜;俞强.端羟基超支化聚酯的稳定化改性及热分解行为[J].高校化学工程学报,2014(2):346-351. |
| [11] | 徐厚才;罗运军;李国平;谭惠民.低代数聚酰胺-胺树形分子在棉纤维染色中的应用研究[J].印染助剂,2005(7):20-22,25. |
| [12] | 黄建洪;林桂凤;王铁群;宋心远.树状大分子化合物的防水整理[J].印染,2006(10):34-36. |
| [13] | 宋雪晶;罗运军;李纠;辛伟.不饱和超支化聚酯的合成与表征[J].化工新型材料,2011(5):103-104,123. |
- 下载量()
- 访问量()
- 您的评分：
-
10%
-
20%
-
30%
-
40%
-
50%