CN112342590A - 一种铝合金表面超疏水着色膜的制备方法 - Google Patents
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- 238000001035 drying Methods 0.000 claims abstract description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 14
- 229940089951 perfluorooctyl triethoxysilane Drugs 0.000 claims abstract description 12
- AVYKQOAMZCAHRG-UHFFFAOYSA-N triethoxy(3,3,4,4,5,5,6,6,7,7,8,8,8-tridecafluorooctyl)silane Chemical compound CCO[Si](OCC)(OCC)CCC(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)C(F)(F)F AVYKQOAMZCAHRG-UHFFFAOYSA-N 0.000 claims abstract description 12
- 239000007788 liquid Substances 0.000 claims abstract description 6
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- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 5
- 238000009835 boiling Methods 0.000 claims abstract description 5
- 238000004140 cleaning Methods 0.000 claims abstract description 5
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- QLOKJRIVRGCVIM-UHFFFAOYSA-N 1-[(4-methylsulfanylphenyl)methyl]piperazine Chemical compound C1=CC(SC)=CC=C1CN1CCNCC1 QLOKJRIVRGCVIM-UHFFFAOYSA-N 0.000 claims abstract description 4
- 239000004115 Sodium Silicate Substances 0.000 claims abstract description 4
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- 239000001488 sodium phosphate Substances 0.000 claims abstract description 4
- NTHWMYGWWRZVTN-UHFFFAOYSA-N sodium silicate Chemical compound [Na+].[Na+].[O-][Si]([O-])=O NTHWMYGWWRZVTN-UHFFFAOYSA-N 0.000 claims abstract description 4
- 229910052911 sodium silicate Inorganic materials 0.000 claims abstract description 4
- 238000003756 stirring Methods 0.000 claims abstract description 4
- RYFMWSXOAZQYPI-UHFFFAOYSA-K trisodium phosphate Chemical compound [Na+].[Na+].[Na+].[O-]P([O-])([O-])=O RYFMWSXOAZQYPI-UHFFFAOYSA-K 0.000 claims abstract description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 6
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- 229910052782 aluminium Inorganic materials 0.000 claims description 5
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- 238000005520 cutting process Methods 0.000 claims description 3
- 239000008367 deionised water Substances 0.000 claims description 3
- 229910021641 deionized water Inorganic materials 0.000 claims description 3
- 238000011010 flushing procedure Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 239000004576 sand Substances 0.000 claims description 3
- 239000002904 solvent Substances 0.000 claims description 3
- 239000000758 substrate Substances 0.000 claims description 3
- 238000004506 ultrasonic cleaning Methods 0.000 claims description 3
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Abstract
本发明公开了一种铝合金表面超疏水着色膜的制备方法。(1)先把铝合金打磨至光滑，水洗，再在70‑90℃除油液(30‑50g/L磷酸钠，5‑15g/L硅酸钠)中除油1‑4min，后在乙醇水溶液超声清洗10min，烘干；(2)配制体积比为5％‑20％的硫酸溶液，将步骤(1)处理后的样品在电压15‑30V，电流0.1‑0.5A，阳极氧化20‑50min，再烘干；(3)配制铬酸钾质量比为5‑15％的甲溶液、醋酸铅质量比为15‑25％的乙溶液；(4)将阳极氧化后的铝合金分别浸入甲、乙溶液液，2‑5分钟，水洗后沸水浴封孔5‑20min，干燥；(5)移取2‑6ml全氟辛基三乙氧基硅烷(POTS)加入到30‑50ml乙醇溶液中，30‑50℃磁力搅拌1‑3h。(6)将步骤(4)所得样品浸入30‑50℃自组装液中1‑3h，清洗烘干。本发明成本低，制备工艺环保，所制备自组装膜具有超疏水性能及表面装饰功能。
Description
技术领域
本发明涉及铝合金超疏水表面研究领域，特别涉及一种制备铝合金表面超疏水着色膜的方法。
背景技术
超疏水表面是指水静态接触角大于150°的表面，这一现象是受到荷叶的启发。固体表面的非润湿性在防腐，高端制造等领域有重大意义。铝及铝合金制品以其独特的优点使得它的应用十分的广泛，尤其是近年来在移动设备，飞机制造等方面。人工建立超疏水表面通常是先构建微观纳米结构，然后在材料表面上覆盖上一层低表面能的物质，其主要的方法有模板法，分子自组装法，刻蚀法，溶胶-凝胶法，沉积法等。本文中使用阳极氧化着色，再用沸水封孔后，在表面自组装低表面能物质，不仅具有优异的耐腐蚀性能和鲜艳的颜色，在复杂环境下也可以展现出超疏水膜层的高稳定性，在航空航天、新材料、电力、电子和新能源等领域具有良好的应用前景。
现有技术公开了多种超疏水表面的制备方法，但多数方法制备的超疏水膜层制备过程对环境不够友好，操作复杂，且稳定性不足，着色效果欠理想。为此，开发一种铝合金表面超疏水着色膜的制备方法尤为必要。
发明内容
本发明的目的是提供一种制备铝合金表面超疏水着色膜的方法。
步骤为：
(1)先将6061铝合金基板切割成30mm×40mm×2mm大小的试样，再对样品进行砂粒度为600#，800#，1200#，1500#的耐水SiC磨砂纸的打磨，后经蒸馏水冲洗，再在除油液(30-50g/L磷酸钠，5-15g/L硅酸钠，70-90℃)中除油1-4min，用乙醇和去离子水溶液进行超声波清洗10min烘干。
(2)配制浓硫酸与蒸馏水体积比为5％-20％的溶液，将步骤(1)处理后的样品在控制电压15-30V，电流0.1-0.5A，时间为20-50min，进行阳极氧化，再烘干。阳极氧化后的铝片用(0.5-3％)的氨水中和半分钟，再冲洗干净后即可着色。
(3)以水为溶剂，配制铬酸钾量质量比为5-15％的甲液、醋酸铅质量比为15-25％的乙液。
(4)将步骤(2)处理后的铝合金浸入步骤(3)制备的甲、乙液中着色，分别交替浸入2-5分钟，冲洗后沸水浴封孔5-20min，烘干待用。
(5)移取2-6ml全氟辛基三乙氧基硅烷(POTS)加入到30-50ml乙醇溶液中，30-50℃磁力加热搅拌1-3h。
(6)将步骤(4)所得样品浸入步骤(5)中的30-50℃全氟辛基三乙氧基硅烷(POTS)自组装溶液1-3h，取出后清洗烘干待测试。
本发明方法制备工艺绿色环保，操作方法简单，且所制备铝合金超疏水表面具有鲜艳的颜色。
附图说明
图1为本发明实施例中铝合金表面超疏水着色膜的不同倍率SEM图和接触角图。(其中a为膜层500倍率图，b为膜层5000倍率图，c为膜层20000倍率图，d为水滴在膜层的接触角图)
图2为本发明实施例中铝合金表面超疏水着色膜的元素分布EDS图。
具体实施方式
实施例：
(1)先将6061铝合金基板切割成30mm×40mm×2mm大小的试样，再对样品进行砂粒度为600#，800#，1200#，1500#的耐水SiC磨砂纸的打磨，后经蒸馏水冲洗，再在除油液(30-50g/L磷酸钠，5-15g/L硅酸钠，70-90℃)中除油1-4min，用乙醇和去离子水溶液进行超声波清洗10min烘干。
(2)配制浓硫酸与蒸馏水体积比为5％-20％的溶液，将步骤(1)处理后的样品在控制电压15-30V，电流0.1-0.5A，时间为20-50min，进行阳极氧化，再烘干。阳极氧化后的铝片用(0.5-3％)的氨水中和半分钟，再冲洗干净后即可着色。
(3)以水为溶剂，配制铬酸钾量质量比为5-15％的甲液、醋酸铅质量比为15-25％的乙液。
(4)将步骤(2)处理后的铝合金浸入步骤(3)制备的甲、乙液中着色，分别交替浸入2-5分钟，冲洗后沸水浴封孔5-20min，烘干待用。
(5)移取2-6ml全氟辛基三乙氧基硅烷(POTS)加入到30-50ml乙醇溶液中，30-50℃磁力加热搅拌1-3h。
(6)将步骤(4)所得样品浸入步骤(5)中的30-50℃全氟辛基三乙氧基硅烷(POTS)自组装溶液1-3h，取出后清洗烘干待测试。
从图1中可以看出复合膜层致密均匀，接触角达到超疏水标准。通过图2显示了膜层中各元素分布情况。
Claims (1)
1.一种在铝合金表面超疏水着色膜的制备方法，其特征在于具体步骤为：
(1)先将6061铝合金基板切割成30mm×40mm×2mm大小的试样，再对样品进行砂粒度为600#，800#，1200#，1500#的耐水SiC磨砂纸的打磨，后经蒸馏水冲洗，再在70-90℃的除油液中除油1-4min，用乙醇和去离子水溶液进行超声波清洗10min烘干备用；所述除油液的配方为：40g/L磷酸钠，10g/L硅酸钠；
(2)配制浓硫酸与蒸馏水体积比为5％-20％的溶液，将步骤(1)处理后的样品在控制电压15-30V，电流0.1-0.5A，时间为20-50min，进行阳极氧化，再烘干；阳极氧化后的铝片用0.5-3％的氨水中和半分钟，再冲洗干净后即可着色；
(3)以水为溶剂，配制铬酸钾量质量比为5-15％的甲液、醋酸铅质量比为15-25％的乙液；
(4)将步骤(2)处理后的铝合金浸入步骤(3)制备的甲、乙液中着色，分别交替浸入2-5分钟，冲洗后沸水浴封孔5-20min，烘干待用；
(5)移取2-6ml全氟辛基三乙氧基硅烷加入到30-50ml乙醇溶液中，30-50℃磁力加热搅拌1-3h；
(6)将步骤(4)所得样品浸入步骤(5)中的30-50℃全氟辛基三乙氧基硅烷自组装溶液1-3h，取出后清洗烘干待测试。
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