CN112031223A - 一种用于幕墙的耐腐蚀铝单板及其制备工艺 - Google Patents

一种用于幕墙的耐腐蚀铝单板及其制备工艺 Download PDF

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CN112031223A
CN112031223A CN202010908712.9A CN202010908712A CN112031223A CN 112031223 A CN112031223 A CN 112031223A CN 202010908712 A CN202010908712 A CN 202010908712A CN 112031223 A CN112031223 A CN 112031223A
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aluminum veneer
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马涛
杨强
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Jiangsu Baida Curtain Wall Technology Co ltd
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Abstract

本发明公开了一种用于幕墙的耐腐蚀铝单板,包括铝基材、钝化底层、第一底漆层、第二底漆层和氟碳面漆,制备工艺包括如下步骤:表面清洗、抛光钝化、涂漆以及成品。本发明的优点在于能够极大提升铝单板的耐腐蚀性能,底漆与基材之间连接更加紧密牢固。

Description

一种用于幕墙的耐腐蚀铝单板及其制备工艺
技术领域
本发明涉及铝单板表面处理技术领域,特别涉及一种用于幕墙的耐腐蚀铝单板及其制备工艺。
背景技术
幕墙铝单板是采用优质铝合金板材为基材,再经过数控折弯等技术成型,表面喷涂装饰性涂料的一种新型幕墙材料。
随着时间的推移,建筑幕墙的表面涂层在大气环境下会出现失光、变色、粉化和脱落的现象,导致幕墙基材裸露,幕墙基材与环境中的腐蚀介质接触时发生化学或电化学反应而被锈蚀,性能发生退化,甚至破坏,因此幕墙基材的防腐技术对于幕墙基材的安全性能和耐久性起着极为重要的作用。现今铝单板在长时间使用后容易出现漆面脱落的问题,在面对严苛的外部环境下的耐腐蚀能力比较弱。
发明内容
本发明的目的是提供一种用于幕墙的耐腐蚀铝单板及其制备工艺。
本发明的上述技术目的是通过以下技术方案得以实现的:
一种用于幕墙的耐腐蚀铝单板,其特征在于,包括铝基材、钝化底层、第一底漆层、第二底漆层和氟碳面漆,所述第一底漆层包含如下重量份组分:热固性丙烯酸树脂30-40份、稀释溶剂2-5份、纳米二氧化钛3-6份,第一流平剂2-3份,所述第二底漆层包含如下重量份组分:热固性丙烯酸树脂20-30份、乙酸丁酯30-35份、PVDF氟碳树脂5-10份、稀释溶剂2-5份、第二流平剂1-2份,二氧化硅4-5份,所述氟碳面漆包含如下重量份组分:热固性丙烯酸树脂20-30份,PVDF氟碳树脂23-25份,第二流平剂1-2份,分散剂1-2份,钛白粉5-7份,乙酸丁酯20-25份。
优选的,所述第一底漆层与第二底漆层的稀释溶剂选自乙醇、异丙醇、丙二醇甲醚中的一种。
优选的,所述第一流平剂选自有机改性聚二甲基硅氧烷、异佛尔酮、二丙酮醇中的一种。
优选的,所述第二流平剂选自聚二甲基硅氧烷、聚甲基烷基硅氧烷、氟改性丙烯酸流平剂中的一种。
优选的,所述分散剂选自聚丙烯酰胺、三聚磷酸钠、聚乙烯吡咯烷酮中的一种或几种。
优选的,所述第一底漆层的厚度为2-3μm,所述第二底漆层的厚度为4-6μm,所述氟碳面漆的厚度5-7μm。
一种用于幕墙的耐腐蚀铝单板制备工艺,其特征在于:包括如下步骤:
S1,表面清洗:将铝单板表面采用细砂纸打磨平整后浸入脱脂剂进行脱脂,完毕后清水超声波干净后烘干;
S2,抛光钝化:在常温下将S1中处理后的铝单板浸泡在铝抛光剂原液内,抛光完成后迅速将铝单板在清水中清洗干净,之后再浸渍在除灰钝化剂中漂洗,再取出铝单板用纯净水浸泡后洗干净,再将铝单板烘干;
S3,涂漆:将S2中处理后的铝单板表面先采用高压静电喷枪喷涂第一底漆层,在室温下放置挥发5-6分钟后放置于钢辊底部,将第二底漆层通过钢辊涂覆于铝单板上,完成后进行烘烤并冷却,之后再将氟碳面漆通过高压静电喷枪涂覆于烘烤好的第二底漆层上,完成后进行烘烤并冷却;
S4,成品:将S3中处理后的铝单板表面冷覆保护膜,分卷剪切后进行包装。
综上所述,本发明的有益效果为:本发明通过采用将底漆分为两层,与基材贴近的第一底漆层加入了纳米二氧化钛能够提升第一底漆层与基材之间的附着力,再通过湿碰湿的方式将第二底漆层通过辊压方式涂敷在第一底漆层上,最后再将氟碳面漆喷涂,能够极大提升铝单板的耐腐蚀性能,底漆与基材之间连接更加紧密牢固。
具体实施方式
下面对本发明的具体实施方式作进一步说明,本实施例不构成对本发明的限制。
实施例1
S1,表面清洗:将铝单板表面采用细砂纸打磨平整后浸入脱脂剂进行脱脂,完毕后清水超声波干净后烘干。
S2,抛光钝化:在常温下将S1中处理后的铝单板浸泡在铝抛光剂原液内,抛光完成后迅速将铝单板在清水中清洗干净,之后再浸渍在除灰钝化剂中漂洗,再取出铝单板用纯净水浸泡后洗干净,再将铝单板烘干。
S3,涂漆:将S2中处理后的铝单板表面先采用高压静电喷枪喷涂第一底漆层,所述第一底漆层包含如下重量份组分:热固性丙烯酸树脂32份、稀释溶剂异丙醇3份、纳米二氧化钛4份,第一流平剂异佛尔酮2份,在室温下放置挥发5分钟后放置于钢辊底部,将第二底漆层通过钢辊涂覆于铝单板上,所述第二底漆层包含如下重量份组分:热固性丙烯酸树脂23份、乙酸丁酯32份、PVDF氟碳树脂7份、稀释溶剂异丙醇3份、第二流平剂聚二甲基硅氧烷2份,二氧化硅5份,完成后进行烘烤并冷却,之后再将氟碳面漆通过高压静电喷枪涂覆于烘烤好的第二底漆层上,所述氟碳面漆包含如下重量份组分:热固性丙烯酸树脂23份,PVDF氟碳树脂23份,第二流平剂聚二甲基硅氧烷2份,分散剂聚丙烯酰胺1份,钛白粉6份,乙酸丁酯23份,完成后进行烘烤并冷却,其中第一底漆层的厚度为3μm,第二底漆层的厚度为6μm,氟碳面漆的厚度为6μm。
S4,成品:将S3中处理后的铝单板表面冷覆保护膜,分卷剪切后进行包装。
实施例2
S1,表面清洗:将铝单板表面采用细砂纸打磨平整后浸入脱脂剂进行脱脂,完毕后清水超声波干净后烘干。
S2,抛光钝化:在常温下将S1中处理后的铝单板浸泡在铝抛光剂原液内,抛光完成后迅速将铝单板在清水中清洗干净,之后再浸渍在除灰钝化剂中漂洗,再取出铝单板用纯净水浸泡后洗干净,再将铝单板烘干。
S3,涂漆:将S2中处理后的铝单板表面先采用高压静电喷枪喷涂第一底漆层,所述第一底漆层包含如下重量份组分:热固性丙烯酸树脂34份、稀释溶剂丙二醇甲醚4份、纳米二氧化钛5份,第一流平剂二丙酮醇3份,在室温下放置挥发5分钟后放置于钢辊底部,将第二底漆层通过钢辊涂覆于铝单板上,所述第二底漆层包含如下重量份组分:热固性丙烯酸树脂26份、乙酸丁酯33份、PVDF氟碳树脂8份、稀释溶剂丙二醇甲醚4份、第二流平剂氟改性丙烯酸1份,二氧化硅4份,完成后进行烘烤并冷却,之后再将氟碳面漆通过高压静电喷枪涂覆于烘烤好的第二底漆层上,所述氟碳面漆包含如下重量份组分:热固性丙烯酸树脂26份,PVDF氟碳树脂25份,第二流平剂氟改性丙烯酸1份,分散剂三聚磷酸钠2份,钛白粉7份,乙酸丁酯22份,完成后进行烘烤并冷却,其中第一底漆层的厚度为2μm,第二底漆层的厚度为5μm,氟碳面漆的厚度为7μm。
S4,成品:将S3中处理后的铝单板表面冷覆保护膜,分卷剪切后进行包装。
实施例3
S1,表面清洗:将铝单板表面采用细砂纸打磨平整后浸入脱脂剂进行脱脂,完毕后清水超声波干净后烘干。
S2,抛光钝化:在常温下将S1中处理后的铝单板浸泡在铝抛光剂原液内,抛光完成后迅速将铝单板在清水中清洗干净,之后再浸渍在除灰钝化剂中漂洗,再取出铝单板用纯净水浸泡后洗干净,再将铝单板烘干。
S3,涂漆:将S2中处理后的铝单板表面先采用高压静电喷枪喷涂第一底漆层,所述第一底漆层包含如下重量份组分:热固性丙烯酸树脂38份、稀释溶剂乙醇5份、纳米二氧化钛6份,第一流平剂二丙酮醇2份,在室温下放置挥发6分钟后放置于钢辊底部,将第二底漆层通过钢辊涂覆于铝单板上,所述第二底漆层包含如下重量份组分:热固性丙烯酸树脂29份、乙酸丁酯35份、PVDF氟碳树脂10份、稀释溶剂乙醇5份、第二流平剂聚甲基烷基硅氧烷2份,二氧化硅5份,完成后进行烘烤并冷却,之后再将氟碳面漆通过高压静电喷枪涂覆于烘烤好的第二底漆层上,所述氟碳面漆包含如下重量份组分:热固性丙烯酸树脂28份,PVDF氟碳树脂23份,第二流平剂聚甲基烷基硅氧烷2份,分散剂聚乙烯吡咯烷酮2份,钛白粉5份,乙酸丁酯25份,完成后进行烘烤并冷却,其中第一底漆层的厚度为3μm,第二底漆层的厚度为6μm,氟碳面漆的厚度为7μm。
S4,成品:将S3中处理后的铝单板表面冷覆保护膜,分卷剪切后进行包装。
本发明通过采用将底漆分为两层,与基材贴近的第一底漆层加入了纳米二氧化钛能够提升第一底漆层与基材之间的附着力,再通过湿碰湿的方式将第二底漆层通过辊压方式涂敷在第一底漆层上,最后再将氟碳面漆喷涂,能够极大提升铝单板的耐腐蚀性能,底漆与基材之间连接更加紧密牢固。
以上所述,仅是本发明的较佳实施例而已,不用于限制本发明,本领域技术人员可以在本发明的实质和保护范围内,对本发明做出各种修改或等同替换,这种修改或等同替换也应视为落在本发明技术方案的保护范围内。

Claims (7)

1.一种用于幕墙的耐腐蚀铝单板,其特征在于,包括铝基材、钝化底层、第一底漆层、第二底漆层和氟碳面漆,所述第一底漆层包含如下重量份组分:热固性丙烯酸树脂30-40份、稀释溶剂2-5份、纳米二氧化钛3-6份,第一流平剂2-3份,所述第二底漆层包含如下重量份组分:热固性丙烯酸树脂20-30份、乙酸丁酯30-35份、PVDF氟碳树脂5-10份、稀释溶剂2-5份、第二流平剂1-2份,二氧化硅4-5份,所述氟碳面漆包含如下重量份组分:热固性丙烯酸树脂20-30份,PVDF氟碳树脂23-25份,第二流平剂1-2份,分散剂1-2份,钛白粉5-7份,乙酸丁酯20-25份。
2.根据权利要求1所述的一种用于幕墙的耐腐蚀铝单板,其特征在于:所述第一底漆层与第二底漆层的稀释溶剂选自乙醇、异丙醇、丙二醇甲醚中的一种。
3.根据权利要求1所述的一种用于幕墙的耐腐蚀铝单板,其特征在于:所述第一流平剂选自有机改性聚二甲基硅氧烷、异佛尔酮、二丙酮醇中的一种。
4.根据权利要求1所述的一种用于幕墙的耐腐蚀铝单板,其特征在于:所述第二流平剂选自聚二甲基硅氧烷、聚甲基烷基硅氧烷、氟改性丙烯酸流平剂中的一种。
5.根据权利要求1所述的一种用于幕墙的耐腐蚀铝单板,其特征在于:所述分散剂选自聚丙烯酰胺、三聚磷酸钠、聚乙烯吡咯烷酮中的一种或几种。
6.根据权利要求1所述的一种用于幕墙的耐腐蚀铝单板,其特征在于:所述第一底漆层的厚度为2-3μm,所述第二底漆层的厚度为4-6μm,所述氟碳面漆的厚度5-7μm。
7.一种用于幕墙的耐腐蚀铝单板制备工艺,其特征在于:包括如下步骤:
S1,表面清洗:将铝单板表面采用细砂纸打磨平整后浸入脱脂剂进行脱脂,完毕后清水超声波干净后烘干;
S2,抛光钝化:在常温下将S1中处理后的铝单板浸泡在铝抛光剂原液内,抛光完成后迅速将铝单板在清水中清洗干净,之后再浸渍在除灰钝化剂中漂洗,再取出铝单板用纯净水浸泡后洗干净,再将铝单板烘干;
S3,涂漆:将S2中处理后的铝单板表面先采用高压静电喷枪喷涂第一底漆层,在室温下放置挥发5-6分钟后放置于钢辊底部,将第二底漆层通过钢辊涂覆于铝单板上,完成后进行烘烤并冷却,之后再将氟碳面漆通过高压静电喷枪涂覆于烘烤好的第二底漆层上,完成后进行烘烤并冷却;
S4,成品:将S3中处理后的铝单板表面冷覆保护膜,分卷剪切后进行包装。
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