CN109518468A - 一种有机硅聚合物超疏水织物整理剂的制备及应用 - Google Patents

一种有机硅聚合物超疏水织物整理剂的制备及应用 Download PDF

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CN109518468A
CN109518468A CN201811347432.4A CN201811347432A CN109518468A CN 109518468 A CN109518468 A CN 109518468A CN 201811347432 A CN201811347432 A CN 201811347432A CN 109518468 A CN109518468 A CN 109518468A
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fabric
superhydrophobic fabric
superhydrophobic
alcohol
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张俊平
严杰
刘克静
赵林
曹晓君
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Lanzhou Institute of Chemical Physics LICP of CAS
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Shandong Xinna Chaoshu New Materials Co Ltd
Shubo (shanghai) Nanotechnology Co Ltd
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Abstract

本发明公开了一种有机硅聚合物超疏水织物整理剂,是将有机硅和有机硅烷加入到碱性醇‑水溶液中水解缩合而得。该有机硅超疏水织物整理剂含有疏水基团和偶联基团,在浸涂和高温固化过程中,其偶联基团可与织物的纤维发生化学键合,其疏水基团可以起到超疏水效果。将织物在稀释5‑10倍的有机硅织物整理剂溶液中浸涂2‑10min,再在80‑180℃固化2‑10min,即得超疏水织物。该超疏水织物具有超疏水性能优异和耐水洗等优点,可用于多种超疏水织物的构筑,不需对织物进行预处理,极大简化了制备工艺,并保持了织物固有的机械强度、柔韧性、光泽和手感等性能。

Description

一种有机硅聚合物超疏水织物整理剂的制备及应用
技术领域
本发明涉及一种超疏水织物整理剂的制备方法,具体涉及一种有机硅聚合物超疏水织物整理剂的制备及其使用方法。
背景技术
荷叶具有出淤泥而不染的特点。受荷叶效应启发,超疏水表面受到广泛关注。超疏水表面是指水滴在其表面接触角大于150°,滚动角较低的表面,具有优异的自清洁性能,在自清洁纺织品、油水分离、防腐、防结冰等领域具有广泛的应用前景。超疏水表面的研究引起了广泛的兴趣。
纺织品与人们的生产、生活息息相关。功能性纺织品的研究和开发越来越受到重视,极大地改善了人们的生活质量。与其他功能性纺织品不同,超疏水织物因具有荷叶一样的自清洁效果而备受关注。超疏水表面的制备一般需要先构建粗糙的表面结构,再进行低表面能修饰而制得。纺织品自身具有一定的微米级纹理结构,因此,超疏水织物的制备集中于新型织物整理剂的制备及如何提高其与织物结合牢固性方面。超疏水织物整理剂的种类非常多,包括氟硅树脂、氟碳树脂、有机硅树脂等。但是这些整理剂用于制备超疏水织物存在耐水洗性差、稳定性不高、含PFOS/PFOA等一系列问题,成为超疏水织物制备及应用的瓶颈。因此,一些研究着重于超疏水织物稳定性的提高,即如何提高织物整理剂与织物结合牢固性方面。专利CN102352549A先在织物表面浸涂无机纳米粒子,然后进行包覆,最后进行低表面能改姓,得到超疏水织物。专利CN100595373C以氯金酸和柠檬酸为催化剂,在棉织物表面负载纳米金颗粒,而后进行低表面能修饰,得到超疏水织物,多次折叠后,超疏水性能良好。专利CN102174737A通过辐照接枝技术在织物表面共价结合聚甲基丙烯酸烷基酯,具有一定的耐水洗稳定性。这些方法虽然一定程度上提高了超疏水织物的稳定性,但依然需要经过织物表面活化、射线辐照和低表面能修饰等多个步骤才能完成,不仅影响织物的强度、外观,且工艺复杂,严重限制超疏水织物的实际应用。因此,如何通过简单的方法制得超疏水织物整理剂,并通过简单的工艺应用于制备性能优异的超疏水织物是本领域亟待解决的难点。
发明内容
本发明的目的是为了解决现有技术存在的问题,提供一种有机硅聚合物超疏水织物整理剂的制备方法;
本发明的另一目的是提供上述有机硅聚合物超疏水织物整理剂的具体使用方法。
(一)有机硅聚合物超疏水织物整理剂的制备
本发明有机硅聚合物超疏水织物整理剂的制备,是由有机硅烷和有机硅在碱性醇溶液中水解缩合制得。具体制备工艺为:将有机硅和有机硅烷加入到碱性醇-水溶液中,在 25~80℃下水解缩合2~48h;冷却至室温,调节pH至中性,得到超疏水织物整理剂。
所述有机硅为聚二甲基二甲氧基硅烷、聚苯基硅树脂、聚二甲基硅树脂、聚甲基乙烯基硅树脂中的至少一种;有机硅在醇-水溶液中的体积分数为0.5%~5%。
所述有机硅烷为四乙氧基硅烷、甲基硅酸钠、甲基硅酸钾、水玻璃、氨丙基三甲氧基硅烷、3-(2,3-环氧丙氧)丙基三甲氧基硅烷、甲基三乙氧基硅烷、乙基三乙氧基硅烷、乙烯基三乙氧基硅烷、苯基三乙氧基硅烷、辛基三乙氧基硅烷、十二烷基三乙氧基硅烷、十六烷基三乙氧基硅烷、十八烷基三乙氧基硅烷及相应的甲氧基硅烷中的至少一种;有机硅烷在碱性醇-水溶液中的体积分数为1%~4%。
所述碱性醇-水溶液中,醇为甲醇、乙醇、异丙醇、乙二醇、甘油中的至少一种,醇与水的体积比为9:1~1:1。
所述碱性醇-水溶液中,碱为氨水、氢氧化钠、氢氧化钾、乙二胺、三乙胺中的至少一种,碱在醇-水溶液的浓度为0.2%~2%。
本发明制备的有机硅聚合物超疏水织物整理剂含有疏水基团和偶联基团,在浸涂和高温固化过程中,其偶联基团可与织物的纤维发生化学键合,其疏水基团可以起到超疏水效果。
(二)超疏水织物的制备
将本发明制备的超疏水织物整理剂用乙醇/水稀释5~10倍,加入超疏水织物整理剂0.1%~1%的醋酸作为催化剂;将织物浸于其中静置2~10min,再在80~180℃固化2~10min,即得到超疏水织物。
为了提高超疏水织物整理剂的分散均匀性,将超疏水织物整理剂用乙醇稀释后,再超声分散3~5min。
所述织物为聚酯、棉、羊毛、丝绸、腈纶、尼龙、聚氨酯及其混纺织物等。浸涂时间和固化温度根据织物的组成和编织工艺有所区别。
(三)超疏水性和稳定性评价
1、水滴滚落角测定
测试方法:基于一些基底材料表面(如织物)宏观上很粗糙,进行接触角测试时是很难观测液滴的轮廓。而经典的接触角测试方法高度依赖于液滴形状的分析。因此根据报道的方法,用水的滚落角代替了水的接触角和滚动角进行表面润湿性评价(图1)。滚落角的测试方法为:样品固定于样品台(图1b),再放置于接触角测量***的倾斜平台上。注射器安放于倾斜台上方,固定的针头至基底距离为10 mm,一滴水至针头接触到基底而滴落。内径为110μm注射器针头用来滴加10 ± 0.3 μL体积的水滴。滚落角的测量从倾斜50º开始。液滴至少在样品表面三个地方能滴落。如果所有液滴都能在样品表面弹开或滚落,倾斜角度就降低2º,同样的步骤重复直到一滴或很多滴水滴不能从表面滚落为为止。所有水滴能从表面完全滚落或弹开的最小倾斜角度就被认为是滚落角。
测定结果:滚落角<10°,说明所制得的超疏水织物具有优异超疏水性(图2)。
2、耐洗涤性
测试方法:在洗衣机内加入32L水和96g洗衣液,将样品在洗衣机内和另外10块20×20cm的棉布在室温条件下一起洗涤十个循环,45min为一个循环。每次洗涤循环后,布料用去离子水洗涤干净,60℃烘箱干燥后测试其滚落角。
测定结果:水洗20次后,滚落角仍低于15°,水滴易从表面滚落,超疏水性能优异,说明本发明所制超疏水织物具有很好的耐洗涤性。
3、耐磨性
测试方法:将样品固定于不锈钢柱后于磨损介质上以10 kPa为磨损强度往复移动,40cm为一个磨损循环(图3)。为了尽量模拟实际使用情况,磨损实验分别用A4纸、聚酯布料Ι和2000目砂纸为磨损介质进行实验。在磨损10、50、100和200次后,测量其对应的滚落角。
测试结果:10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,超疏水性能优异,说明本发明所制超疏水织物具有很好的耐磨性。
本发明相对于现有技术具有以下优点:
1、超疏水织物整理剂的制备方法和工艺简单,反应条件温,成本低,便于规模化生产;
2、超疏水织物整理剂的使用方法简单,可用于多种超疏水织物的构筑,不需对织物进行预处理,极大简化了制备工艺,并保持了织物固有的机械强度、柔韧性、光泽和手感等性能;
3、 本发明所制超疏水织物具有优异超疏水性和很好的机械稳定性。
附图说明
图1为测定水滚落角的装置示意图(a)和样品夹(b)。
图2为水滴在超疏水织物上的照片。
图3 为评价样品机械稳定性的磨损实验示意图。
具体实施方式
下面通过具体实施例对本发明超疏水织物整理剂的制备和使用方法作进一步说明。
实施例1
(1)超疏水织物整理剂的制备:取0.6mL苯基三乙氧基硅烷、0.2mL四乙氧基硅烷和0.1mL 3-(2,3-环氧丙氧)丙基三甲氧基硅烷,加入到50mL乙醇-水溶液中(乙醇/水=7:1v/v),磁力搅拌10min得到均一的溶液;再加入0.2mL氨水和1mL聚苯基硅树脂,在50℃反应24h;冷却至室温,用1M 盐酸调节pH至中性,得到超疏水织物整理剂。
(2)超疏水织物的制备:量取10mL织物整理剂,用乙醇稀释5倍,磁力搅拌5min,超声分散5min。然后将10cm×10cm聚酯织物浸入其中,加入0.3%醋酸,静置浸泡5min,再将织物在120℃下处理8min,即可得到超疏水织物。
对超疏水织物进行超疏水性和稳定性评价:滚落角<10°;水洗20次后,滚落角仍低于15°,水滴易从表面滚落;10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,具有优异超疏水性和机械稳定性。
实施例2
(1)超疏水织物整理剂的制备:取8mL十六烷基三乙氧基硅烷、2mL乙基三乙氧基硅烷和5mL 3-(2,3-环氧丙氧)丙基三甲氧基硅烷,加入到400mL乙醇/异丙醇-水溶液中(乙醇/异丙醇/水=6:3:1v/v/v),磁力搅拌5min得到均一的溶液;再加入2mL乙二胺、8mL聚二甲基二甲氧基硅树脂和2mL聚甲基乙烯基硅树脂,在25℃反应36h;用1M 盐酸调节pH至中性,得到超疏水织物整理剂。
(2)超疏水织物的制备:量取100mL织物整理剂,用乙醇稀释至其体积 的8倍,磁力搅拌5min,超声分散5min。然后将50cm×50cm棉织物浸入其中,加入0.1%醋酸,静置浸泡3min,再将织物在160℃下处理3min,即可得到超疏水织物。
对超疏水织物进行超疏水性和稳定性评价:滚落角<10°;水洗20次后,滚落角仍低于15°,水滴易从表面滚落;10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,具有优异超疏水性和机械稳定性。
实施例3
(1)超疏水织物整理剂的制备:将20mL甲基三乙氧基硅烷、5甲基硅酸钾和12mL氨丙基三甲氧基硅烷,加入到1L乙醇/乙二醇-水溶液中(乙醇/乙二醇/水=2:2:1v/v/v),机械搅拌5min得到均一的溶液;再加入10mL 1M氢氧化钠水溶液和8mL聚二甲基二甲氧基硅树脂,在40℃反应12h;用1M 盐酸调节pH至中性,得到超疏水织物整理剂。
(2)超疏水织物的制备:量取500mL织物整理剂,用乙醇/水溶液(乙醇/水=1:1v/v)稀释10倍,机械搅拌5min,超声分散5min。然后将50cm×50cm的羊毛、丝绸浸入其中,加入0.1%醋酸,静置浸泡4min,再将织物在80℃下处理4min,即可得到超疏水织物。
对超疏水织物进行超疏水性和稳定性评价:滚落角<10°;水洗20次后,滚落角仍低于15°,水滴易从表面滚落;10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,具有优异超疏水性和机械稳定性。
实施例4
(1)超疏水织物整理剂的制备:将1mL乙烯基三乙氧基硅烷和1mL十二烷基三乙氧基硅烷,加入到100mL乙醇/甘油-水溶液中(乙醇/甘油/水=6.9:0.1:1),磁力搅拌5min得到均一的溶液;再加入0.4mL三乙胺和3mL聚甲基乙烯基硅树脂和1mL聚苯基硅树脂,在70℃反应4h;用1M 盐酸调节pH至中性,得到超疏水织物整理剂。
(2)超疏水织物的制备:量取80mL织物整理剂,用乙醇稀释6倍,磁力搅拌5min,超声分散5min。然后将20cm×20cm聚酯/棉混纺布(20%棉)、腈纶织物浸入其中,加入0.6%醋酸,静置浸泡6min,再将织物在120℃下处理5min,即可得到超疏水织物。
对超疏水织物进行超疏水性和稳定性评价:滚落角<10°;水洗20次后,滚落角仍低于15°,水滴易从表面滚落;10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,具有优异超疏水性和机械稳定性。
实施例5
(1)超疏水织物整理剂的制备:将1mL甲基硅酸钾、4mL十八烷基三乙氧基硅烷和1mL氨丙基三甲氧基硅烷,加入到5L乙醇/乙二醇-水溶液中(乙醇/水=2:1:1),磁力搅拌5min得到均一的溶液;再加入10mL氨水和80mL聚二甲基硅树脂和120mL聚甲基乙烯基硅树脂,在40℃反应8h;用1M 盐酸调节pH至中性,得到超疏水织物整理剂。
(2)超疏水织物的制备:量取1L织物整理剂,用乙醇稀释10倍,机械搅拌5min,超声分散5min。然后将100cm×100cm棉织物浸入其中,加入0.2%醋酸,静置浸泡3min,再将织物在120℃下处理4min,即可得到超疏水织物。对其进行超疏水性和稳定性评价。
对超疏水织物进行超疏水性和稳定性评价:滚落角<10°;水洗20次后,滚落角仍低于15°,水滴易从表面滚落;10KPa载荷下往复摩擦200次后,滚落角仍低于15°,水滴易从表面滚落,具有优异超疏水性和机械稳定性。

Claims (8)

1.一种有机硅聚合物超疏水织物整理剂的制备方法,是将有机硅和有机硅烷加入到碱性醇-水溶液中,在 25~80℃下水解缩合2~48h;冷却至室温,调节pH至中性,得到超疏水织物整理剂。
2.如权利要求1所述有机硅聚合物超疏水织物整理剂的制备方法,其特征在于:所述有机硅为聚二甲基二甲氧基硅烷、聚苯基硅树脂、聚二甲基硅树脂、聚甲基乙烯基硅树脂中的至少一种;且有机硅在醇-水溶液中的体积分数为0.5%~5%。
3.如权利要求1所述有机硅聚合物超疏水织物整理剂的制备方法,其特征在于:所述有机硅烷为四乙氧基硅烷、甲基硅酸钠、甲基硅酸钾、水玻璃、氨丙基三甲氧基硅烷、3-(2,3-环氧丙氧)丙基三甲氧基硅烷、甲基三乙氧基硅烷、乙基三乙氧基硅烷、乙烯基三乙氧基硅烷、苯基三乙氧基硅烷、辛基三乙氧基硅烷、十二烷基三乙氧基硅烷、十六烷基三乙氧基硅烷、十八烷基三乙氧基硅烷及相应的甲氧基硅烷中的至少一种;且有机硅烷在碱性醇-水溶液中的体积分数为1%~4%。
4.如权利要求1所述有机硅聚合物超疏水织物整理剂的制备方法,其特征在于:所述碱性醇-水溶液中,醇为甲醇、乙醇、异丙醇、乙二醇、甘油中的至少一种,醇与水的体积比为9:1~1:1。
5.如权利要求1所述有机硅聚合物超疏水织物整理剂的制备方法,其特征在于:所述碱性醇-水溶液中,碱为氨水、氢氧化钠、氢氧化钾、乙二胺、三乙胺中的至少一种,碱在醇-水溶液的质量浓度为0.2%~2%。
6.如权利要求1所述方法制备的有机硅聚合物超疏水织物整理剂用于制备超疏水织物,其特征在于:将超疏水织物整理剂用乙醇或/和水稀释5~10倍,加入超疏水织物整理剂体积0.1%~1%的醋酸作为催化剂;将织物浸于其中静置2~10min,再在80~180℃固化2~10min,即得到超疏水织物。
7.如权利要求6所述有机硅聚合物超疏水织物整理剂用于制备超疏水织物,其特征在于:将超疏水织物整理剂用乙醇稀释后,再超声分散3~5min。
8.如权利要求6所述有机硅聚合物超疏水织物整理剂用于制备超疏水织物,其特征在于:所述织物为聚酯、棉、羊毛、丝绸、腈纶、尼龙、聚氨酯及其混纺织物。
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CN111494987B (zh) * 2020-04-27 2022-01-11 广州大学 一种无氟的超疏水织物及其制备方法
CN111576036A (zh) * 2020-05-20 2020-08-25 浙江海明实业有限公司 一种纳米防污、抑菌、透气的环保面料及其制备工艺
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CN113249972B (zh) * 2021-06-11 2022-02-01 中国科学院兰州化学物理研究所 一种高耐压易清洁超疏水织物的制备方法
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