CN107502904B - 一种应用于不锈钢的环保型酸洗液 - Google Patents
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- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
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Abstract
本发明公开了一种应用于不锈钢的环保型酸洗液，包括以下成分：无机强酸、磷酸、油酸、聚乙二醇、表面活性剂、赤血酸盐、三元聚羧酸、山梨坦单硬脂酸酯、N,N‑二甲基甲酰胺、水。加入聚乙二醇作为缓蚀剂，可以增强处理后的不锈钢表面的缓蚀效果；加入赤血酸盐作为沉淀剂，可以降低酸洗液中铁离子浓度，从而延长酸洗液的使用寿命，提高酸洗液的重复利用率，减少环境污染并降低成本；而加入有机酸羧酸、山梨坦单硬脂酸酯、N,N‑二甲基甲酰胺不但可以作为酸雾抑制剂，防止烟雾的生成，而且可以提升不锈钢表面形成致密的保护膜，进一步提高不锈钢表面的缓蚀效果。
Description
技术领域
本发明涉及酸洗液技术领域，特别是涉及一种应用于不锈钢的环保型酸洗液。
背景技术
酸洗液主要用于不锈钢、铝材,钢铁件均有金属的酸洗光亮处理，起到除油、除锈、光亮、钝化防锈、抑雾等功效，特别适用于不锈钢冷轧流水线操作，大大缩短清洗时间，同时抑制烟雾的产生，大大改善生产环境，大大降低金属的腐蚀速度。
但是传统的酸洗液主要存在含酸量高、重复利用效果差等缺点，为了减少环境污染，提高酸洗液的重复利用率，本发明提出了一种应用于不锈钢的环保型酸洗液。
发明内容
基于背景技术存在的技术问题，本发明提出了一种应用于不锈钢的环保型酸洗液。
一种应用于不锈钢的环保型酸洗液，包括以下成分：无机强酸、磷酸、油酸、聚乙二醇、表面活性剂、赤血酸盐、三元聚羧酸、山梨坦单硬脂酸酯、N,N-二甲基甲酰胺、水。
一种应用于不锈钢的环保型酸洗液，包括以下重量百分比的成分：无机强酸 40-55%、磷酸 8-15%、油酸 2-8%、聚乙二醇 1-3%、表面活性剂 2-5%、赤血酸盐 0.5-1%、三元聚羧酸 2-4%、山梨坦单硬脂酸酯 0.5-2%、N,N-二甲基甲酰胺 1-3%、水 余量。
优选的，所述的无机酸为盐酸、硝酸、硫酸中的任意一种或者多种的组合。
优选的，所述的表面活性剂为非离子型表面活性剂，进一步优选为脂肪醇聚氧乙烯醚。
本发明的酸洗液的使用方法为：在40-55℃条件下，将不锈钢浸没于酸洗液中浸泡15-30min。
本发明的有益之处在于：本发明的应用于不锈钢的环保型酸洗液，包括以下成分：无机强酸、磷酸、油酸、聚乙二醇、表面活性剂、赤血酸盐、三元聚羧酸、山梨坦单硬脂酸酯、N,N-二甲基甲酰胺、水。其主要成分为无机强酸、磷酸和油酸，同时加入聚乙二醇作为缓蚀剂，可以增强处理后的不锈钢表面的缓蚀效果；加入赤血酸盐作为沉淀剂，可以降低酸洗液中铁离子浓度，从而延长酸洗液的使用寿命，提高酸洗液的重复利用率，减少环境污染并降低成本；而加入有机酸羧酸、山梨坦单硬脂酸酯、N,N-二甲基甲酰胺不但可以作为酸雾抑制剂，防止烟雾的生成，而且可以提升不锈钢表面形成致密的保护膜，进一步提高不锈钢表面的缓蚀效果。
具体实施方式
实施例1
一种应用于不锈钢的环保型酸洗液，包括以下重量百分比的成分：无机强酸 51%、磷酸 13%、油酸 5%、聚乙二醇 2.5%、表面活性剂 4%、赤血酸钠 0.7%、三元聚羧酸 3%、山梨坦单硬脂酸酯 1.8%、N,N-二甲基甲酰胺 1.5%、水 余量。
所述的无机酸为盐酸。
所述的表面活性剂为为脂肪醇聚氧乙烯醚。
本发明的酸洗液的使用方法为：在48℃条件下，将不锈钢浸没于酸洗液中浸泡18min。
实施例2
一种应用于不锈钢的环保型酸洗液，包括以下重量百分比的成分：无机强酸 40%、磷酸 15%、油酸 2%、聚乙二醇 3%、表面活性剂 2%、赤血酸钾1%、三元聚羧酸 2%、山梨坦单硬脂酸酯 2%、N,N-二甲基甲酰胺 1%、水 余量。
所述的无机酸为硝酸和硫酸的1：1摩尔比的混合物。
所述的表面活性剂为脂肪醇聚氧乙烯醚。
本发明的酸洗液的使用方法为：在40℃条件下，将不锈钢浸没于酸洗液中浸泡20min。
实施例3
一种应用于不锈钢的环保型酸洗液，包括以下重量百分比的成分：无机强酸 55%、磷酸 8%、油酸 8%、聚乙二醇 1%、表面活性剂 5%、赤血酸钾 0.5%、三元聚羧酸 4%、山梨坦单硬脂酸酯 0.5%、N,N-二甲基甲酰胺 3%、水 余量。
所述的无机酸为硫酸。
所述的表面活性剂为烷基酚聚氧乙烯醚。
本发明的酸洗液的使用方法为：在55℃条件下，将不锈钢浸没于酸洗液中浸泡15min。
对比例1
将实施例1中的N,N-二甲基甲酰胺去除，发现在酸洗处理过程中有少量烟雾生成，同时处理后的不锈钢耐腐蚀效果也有一定的降低。
以上所述，仅为本发明较佳的具体实施方式，但本发明的保护范围并不局限于此，任何熟悉本技术领域的技术人员在本发明揭露的技术范围内，根据本发明的技术方案及其发明构思加以等同替换或改变，都应涵盖在本发明的保护范围之内。
Claims (5)
1.一种应用于不锈钢的环保型酸洗液，其特征在于，包括以下重量百分比的成分：无机强酸 40-55%、磷酸 8-15%、油酸 2-8%、聚乙二醇 1-3%、表面活性剂 2-5%、赤血酸盐 0.5-1%、三元聚羧酸 2-4%、山梨坦单硬脂酸酯 0.5-2%、N,N-二甲基甲酰胺 1-3%、水 余量。
2.如权利要求1所述的应用于不锈钢的环保型酸洗液，其特征在于，包括以下重量百分比的成分：无机强酸 51%、磷酸 13%、油酸 5%、聚乙二醇 2.5%、表面活性剂 4%、赤血酸盐0.7%、三元聚羧酸 3%、山梨坦单硬脂酸酯 1.8%、N,N-二甲基甲酰胺 1.5%、水 余量。
3.如权利要求1-2任一所述的应用于不锈钢的环保型酸洗液，其特征在于，所述的无机酸为盐酸、硝酸、硫酸中的任意一种或者多种的组合。
4.如权利要求1-2任一所述的应用于不锈钢的环保型酸洗液，其特征在于，所述的表面活性剂为非离子型表面活性剂。
5.如权利要求1-2任一所述的应用于不锈钢的环保型酸洗液，其特征在于，所述的表面活性剂为脂肪醇聚氧乙烯醚。
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| CN104532269A (zh) * | 2014-11-28 | 2015-04-22 | 上海邦中高分子材料有限公司 | 一种安全环保的不锈钢酸洗液 |
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| CN103243340A (zh) * | 2013-05-08 | 2013-08-14 | 张文卓 | 一种不锈钢环保酸洗液 |
| CN104532269A (zh) * | 2014-11-28 | 2015-04-22 | 上海邦中高分子材料有限公司 | 一种安全环保的不锈钢酸洗液 |
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| CN106947978A (zh) * | 2017-02-09 | 2017-07-14 | 赵正芳 | 新型不锈钢酸洗液 |
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