CN112608678A - 一种超疏水型防污节水涂层的制备方法及应用 - Google Patents
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Abstract
本发明公开了一种超疏水型防污节水涂层的制备方法及应用,包含疏水改性二氧化硅及室温硫化硅橡胶(RTV)。所述涂层可应用于玻璃表面,具有防污自洁及节水等功能。当涂层应用于玻璃表面可以有效防止灰尘等对玻璃的污染,遇水即净,可有效防止污物附着,使用正常清洁水量的18%即可将表面冲刷干净,达到卫生标准。本发明成功地制备出水接触角154°滚动角5°‑8°的多功能超疏水涂层,所述涂层具有优异的耐磨、耐腐蚀、耐高温、耐低温等性能。
Description
技术领域
本发明涉及除污节水涂层领域,特别是涉及一种超疏水型防污节水涂层的制备方法及应用。
背景技术
目前,超疏水涂层已成为研究热点之一,超疏水是指表面水的接触角大于150°滚动角小于10°的现象,可以有效防止水滴等在其表面的附着,达到除污、自洁、节水的目的,在涂层领域深受大家的关注。
在玻璃表面涂覆超疏水涂层可以使附着在其上的灰尘等污物遇水即净,水滴会带走表面的灰尘污物,在达到卫生标准的同时可以减少清洁用水及洗涤剂的使用量。洗涤剂中含有表面活性剂,超疏水涂层的使用也可以减少表面活性剂对环境的危害。
传统方法制备的超疏水涂层固化时间长、制备方法复杂、制备条件苛刻,本发明为改善上述不足,同时提高其机械性能,通过简单的实验步骤制备易固化、机械性能强、使用范围广的超疏水涂层。
发明内容
为了达到防污节水及防腐蚀目的,减少为清洁玻璃表面的清洁剂使用量,本发明提出一种超疏水型防污节水涂层的制备方法及应用。用十六烷基三甲氧基硅烷(HDTMS)和3-(异丁烯酰氧)丙基三甲氧基硅烷(KH-570)改性纳米二氧化硅及RTV溶液制备超疏水涂层,应用于玻璃表面用于除污节水。
所述改性二氧化硅制备方法为:将乙醇、去离子水、氨水、正硅酸乙酯按比例加入到三颈瓶中,在一定温度下磁力搅拌一定时间后加入二氧化硅纳米颗粒及改性剂,继续磁力搅拌6小时,离心,并用乙醇洗涤,干燥后得到疏水改性二氧化硅。乙醇、去离子水、氨水、正硅酸乙酯比例为:45:5:2:5,且正硅酸乙酯要在前三者混合均匀后15分钟加入,二氧化硅纳米颗粒的加入量为正硅酸乙酯质量的0.16倍。
所述改性剂为十六烷基三甲氧基硅烷(HDTMS)和3-(异丁烯酰氧)丙基三甲氧基硅烷(KH-570);用量为正硅酸乙酯用量的0.125倍。
所述基底RTV溶液制备方法为:将正己烷加入到RTV中,再依次加入催化剂及固化剂,得到基底RTV溶液。 正己烷、RTV、催化剂、固化剂用量比为100:100:1:5;催化剂为二月桂酸二丁基锡,固化剂为正硅酸乙酯。
所述超疏水涂层的制备方法为:采用滴落的方式将RTV溶液滴至玻璃等表面,用量为100g/m3,将其自然流平,将改性二氧化硅粉末不断过筛至基底RTV溶液上,直至溶液固化,刷去多余粉末,得到超疏水涂层。
所述超疏水涂层应用范围为:应用于玻璃表面做防污自洁节水涂层。
附图说明
图1是超疏水涂层外观图,涂层厚度0.2mm ;
图2是涂层对水的接触角,结果显示涂层对水的接触角为154.2°;
图3是水滴在涂层上形貌图,可以看到染色水滴在图层上几乎呈现球状;
图4是涂层耐磨实验,经砂纸打磨20次后,表面仍具有疏水效果;
图5是涂层防刮实验,刀割表面20次后,表面仍具有疏水效果。
具体实施方式
为能更加清楚地说明本发明的制备方法及应用方式,下面通过具体实施方式加以解释。
例如将超疏水涂层应用于玻璃表面。
涂层应用分为三步:制备疏水改性二氧化硅、制备基底RTV溶液、涂层的制备及使用。
将45毫升乙醇、5毫升去离子水、2毫升氨水加入到三颈瓶中,搅拌15分钟后、加入5毫升正硅酸乙酯,在45度下磁力搅拌4小时后加入0.75g二氧化硅纳米颗粒及0.625gHDTMS和0.625gKH-570,继续磁力搅拌6小时,离心,并用乙醇洗涤,干燥后得到疏水改性二氧化硅。
将10g正己烷、10gRTV、1g二月桂酸二丁基锡、5g正硅酸乙酯混合,得到基底RTV溶液。
将改性二氧化硅粉末不断过筛至基底RTV溶液上,直至溶液固化,刷去多余粉末,得到超疏水涂层。
采用滴落的方式将RTV溶液滴至玻璃等表面,用量为100g/m3,将其自然流平,将改性二氧化硅粉末不断过筛(100目)至基底RTV溶液上,直至溶液固化,刷去多余粉末,得到超疏水涂层。
当灰尘等污物落入玻璃表面,仅需正常用水量18%的水即可将灰尘带走,达到卫生标准。该涂层可使玻璃表面在清洁过程中减少约82%的清洁水使用量,也可以减少使用清洁剂20克每立方米,减少因清洁剂的使用带来的环境危害。
Claims (5)
1.一种超疏水型防污节水涂层的制备方法及应用,其特征是:用十六烷基三甲氧基硅烷(HDTMS)和3-(异丁烯酰氧)丙基三甲氧基硅烷(KH-570)改性纳米二氧化硅及RTV溶液制备超疏水涂层,应用于玻璃表面用于除污节水。
2.根据权利要求1所述的超疏水涂层,其特征是:将乙醇、去离子水、氨水、正硅酸乙酯按45:5:2:5比例加入到三颈瓶中,且正硅酸乙酯要在前三者混合均匀后15分钟加入,在一定温度下磁力搅拌4小时后加入质量为正硅酸乙酯质量0.16倍的二氧化硅纳米颗粒及改性剂,继续磁力搅拌6小时,离心,并用乙醇洗涤,干燥后得到疏水改性二氧化硅。
3.根据权利要求2所述的超疏水涂层,其特征是:改性剂为十六烷基三甲氧基硅烷(HDTMS)和KH-570;用量为正硅酸乙酯用量的0.125倍。
4.根据权利要求1所述的超疏水涂层,其特征是:将正己烷加入到RTV中,再依次加入催化剂及固化剂,正己烷、RTV、催化剂、固化剂用量比为100:100:1:5;催化剂为二月桂酸二丁基锡,固化剂为正硅酸乙酯;得到基底RTV溶液。
5.根据权利要求1所述的超疏水涂层,其特征是:采用滴落的方式将RTV溶液滴至玻璃等表面,用量为100g/m3,将其自然流平,将0.5g改性二氧化硅粉末不断过筛(100目)至基底RTV溶液上,30分钟后溶液固化,刷去多余粉末,得到超疏水涂层。
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CN116285554A (zh) * | 2023-03-13 | 2023-06-23 | 华南农业大学 | 一种耐冲击的透明超疏水涂层的制备方法 |
CN116285554B (zh) * | 2023-03-13 | 2023-09-29 | 华南农业大学 | 一种耐冲击的透明超疏水涂层的制备方法 |
CN116997195A (zh) * | 2023-08-07 | 2023-11-03 | 厦门晶晟富阳科技有限公司 | 一种用于光伏建筑一体化的中空低辐射钙钛矿发电玻璃 |
CN116997195B (zh) * | 2023-08-07 | 2024-03-08 | 厦门晶晟富阳科技有限公司 | 一种用于光伏建筑一体化的中空低辐射钙钛矿发电玻璃 |
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