CN112317281A - 一种钢结构表面防腐蚀工艺 - Google Patents

一种钢结构表面防腐蚀工艺 Download PDF

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CN112317281A
CN112317281A CN202011405220.4A CN202011405220A CN112317281A CN 112317281 A CN112317281 A CN 112317281A CN 202011405220 A CN202011405220 A CN 202011405220A CN 112317281 A CN112317281 A CN 112317281A
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陈斌
陈夏生
唐志华
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FUJIAN XINSHENG STEEL INDUSTRY CO LTD
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Abstract

本发明提供了一种钢结构表面防腐蚀工艺,通过先在钢材表面喷涂底漆层,再在底漆层上喷涂防腐蚀层的方式,而且由于底漆是以水性环氧乳液、高分子环氧树脂作为基体,还添加了羟乙基纤维素、二氧化钛,能够显著的提高底漆层与钢材表面以及防腐蚀层的附着力,防锈颜料和环己酮溶剂能够提高组分之间的混合效果,并能一定程度上使底漆层也具有一定的防腐蚀效果;再配合防腐蚀层,防腐蚀层中添加有草酸镁、硅酸锌、磷酸锌、重铬酸钾、氧化铁红等组分,能够有效的提高防腐蚀效果,提高防腐蚀层的使用寿命,确保钢材表面不会被腐蚀,相比现有技术,经过本发明防腐蚀工艺处理后的钢材,在使用5年后,漆面仍然不会出现龟裂、翘皮、脱落等现象。

Description

一种钢结构表面防腐蚀工艺
技术领域
本发明涉及钢材表面处理领域,尤其涉及一种钢材结构表面的防腐蚀处理工艺。
背景技术
目前,钢材材料不论是在产品还是建筑利用,应用的愈发愈广泛,特别是钢结构建筑,具有施工效率高、建筑结构稳定性好、成本控制难度低等特点;为了确保钢材的使用寿命,特别是在高含水率地区甚至应用在海水内的钢建筑,在施工前或者施工后,都会在钢材表面刷一层红漆,其用意主要是防止钢材直接与介质接触,达到防腐蚀目的;然,这种方式的有效率通常会在使用2年后大幅度下降,随着使用时间的增加,漆面会在一年内逐步出现失光、变色、龟裂、翘皮、脱落的现象,即漆面无法再形成对钢材的保护效果,采用重新刷漆的方式需要先将原有的漆面去除,而对于钢结构建筑,这种方式显然非常难以实施,而若是仅是进行补漆,填补的漆面与原有漆面无法获得优异的密封性,故填补的漆面的使用寿命一般都低于2年。
发明内容
为了克服上述问题,本发明提供了一种钢结构表面防腐蚀工艺,该工艺所获得的漆面具有附着力强、使用寿命长、且能够有效保护钢材避免钢材被腐蚀的特点。
为实现上述目的,本发明提供的技术方案是:
一种钢结构表面防腐蚀工艺,包括以下步骤:
1)先将钢材的表面进行清洗除锈,待干燥后进行喷砂粗化;
2)在钢材表面涂刷底漆,涂刷完成后静置10min,再送入烘箱在80-120℃的条件下烘干,使钢材表面形成底漆层;
3)通过喷漆装置吸附防腐蚀涂液喷涂在底漆层表面,使底漆层的表面获得防腐蚀涂层;
4)喷涂完成后静置30-60min,再送入烘箱在100-150℃的条件下烘烤40-70min后取出。
优选地,所述步骤2)中的烘干温度采用105℃;所述步骤4)中的烘干温度采用132℃,烘烤时间采用60min。
具体的,在步骤2)中,所述底漆按重量份数计算由以下组分构成:水性环氧乳液22-33份、高分子环氧树脂5-10份、防锈颜料1-3份、二氧化钛17-25份、环己酮溶剂1-5份、羟乙基纤维素0.5-1.4份、消泡剂0.3-0.8份、基材湿润剂0.5-0.8份、防锈助剂0.1-0.5份。
更具体的,所述底漆按重量份数计算由以下组分构成:所述底漆按重量份数计算由以下组分构成:水性环氧乳液27份、高分子环氧树脂8份、防锈颜料2份、二氧化钛21份、环己酮溶剂3份、羟乙基纤维素1.1份、消泡剂0.6份、基材湿润剂0.7份、防锈助剂0.3份。
具体的,在步骤3)中,所述防腐蚀涂液按重量份计由以下组分构成:水泥45-67份、氧化铁红20-25份、水10-15份、草酸镁4-10份、硅酸锌1-5份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
更具体的,所述防腐蚀涂液按重量份计由以下组分构成:所述防腐蚀涂液按重量份计由以下组分构成:水泥55份、氧化铁红23份、水13份、草酸镁7份、硅酸锌3份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
具体的,所述防腐蚀涂液的制备工艺包括以下步骤:
1)将氧化铁红、水泥、硅酸锌分别用粉碎机粉碎后,再用球磨机分别球磨,球磨2-3h后,将原料倒入加热搅拌机中,在30-40℃的条件下搅拌混合30-60min;
2)按重量取水性环氧丙烯酸乳液、三聚磷酸钠、磷酸锌、草酸镁和40%的水,将上述的成分投入反应釜中,加热至上述的成分溶解后再进行搅拌,搅拌时间为2-3h,搅拌后静置;
3)再向反应釜中加入球磨后的氧化铁红、水泥、硅酸锌以及重铬酸钾、阻锈剂、消泡剂和60%的水,再对反应釜内物料进行搅拌,搅拌均匀后,得到防腐蚀涂液。
上述技术方案的有益之处在于:
本发明提供了一种钢结构表面防腐蚀工艺,通过先在钢材表面喷涂底漆层,再在底漆层上喷涂防腐蚀层的方式,而且由于底漆是以水性环氧乳液、高分子环氧树脂作为基体,还添加了羟乙基纤维素、二氧化钛,能够显著的提高底漆层与钢材表面以及防腐蚀层的附着力,防锈颜料和环己酮溶剂能够提高组分之间的混合效果,并能一定程度上使底漆层也具有一定的防腐蚀效果;再配合防腐蚀层,防腐蚀层中添加有草酸镁、硅酸锌、磷酸锌、重铬酸钾、氧化铁红等组分,能够有效的提高防腐蚀效果,提高防腐蚀层的使用寿命,确保钢材表面不会被腐蚀,相比现有技术,经过本发明防腐蚀工艺处理后的钢材,在使用5年后,漆面仍然不会出现龟裂、翘皮、脱落等现象。
下面将结合具体实施方式对本发明的技术方案进行清楚、完整地描述,显然,所描述的实施例是本发明一部分实施例,而不是全部的实施例。基于本发明中的实施例,本领域普通技术人员在没有做出创造性劳动前提下所获得的所有其他实施例,都属于本发明保护的范围。
具体实施方式
实施例1
一种钢结构表面防腐蚀工艺,包括以下步骤:
1)先将钢材的表面进行清洗除锈,待干燥后进行喷砂粗化;
2)在钢材表面涂刷底漆,涂刷完成后静置10min,再送入烘箱在80-120℃的条件下烘干,使钢材表面形成底漆层;
3)通过喷漆装置吸附防腐蚀涂液喷涂在底漆层表面,使底漆层的表面获得防腐蚀涂层;
4)喷涂完成后静置30-60min,再送入烘箱在100-150℃的条件下烘烤40-70min后取出。
优选地,所述步骤2)中的烘干温度采用105℃;所述步骤4)中的烘干温度采用132℃,烘烤时间采用60min。
具体的,在步骤2)中,所述底漆按重量份数计算由以下组分构成:水性环氧乳液22-33份、高分子环氧树脂5-10份、防锈颜料1-3份、二氧化钛17-25份、环己酮溶剂1-5份、羟乙基纤维素0.5-1.4份、消泡剂0.3-0.8份、基材湿润剂0.5-0.8份、防锈助剂0.1-0.5份。
更具体的,所述底漆按重量份数计算由以下组分构成:所述底漆按重量份数计算由以下组分构成:水性环氧乳液27份、高分子环氧树脂8份、防锈颜料2份、二氧化钛21份、环己酮溶剂3份、羟乙基纤维素1.1份、消泡剂0.6份、基材湿润剂0.7份、防锈助剂0.3份。
具体的,在步骤3)中,所述防腐蚀涂液按重量份计由以下组分构成:水泥45-67份、氧化铁红20-25份、水10-15份、草酸镁4-10份、硅酸锌1-5份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
更具体的,所述防腐蚀涂液按重量份计由以下组分构成:所述防腐蚀涂液按重量份计由以下组分构成:水泥55份、氧化铁红23份、水13份、草酸镁7份、硅酸锌3份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
具体的,所述防腐蚀涂液的制备工艺包括以下步骤:
1)将氧化铁红、水泥、硅酸锌分别用粉碎机粉碎后,再用球磨机分别球磨,球磨2-3h后,将原料倒入加热搅拌机中,在30-40℃的条件下搅拌混合30-60min;
2)按重量取水性环氧丙烯酸乳液、三聚磷酸钠、磷酸锌、草酸镁和40%的水,将上述的成分投入反应釜中,加热至上述的成分溶解后再进行搅拌,搅拌时间为2-3h,搅拌后静置;
3)再向反应釜中加入球磨后的氧化铁红、水泥、硅酸锌以及重铬酸钾、阻锈剂、消泡剂和60%的水,再对反应釜内物料进行搅拌,搅拌均匀后,得到防腐蚀涂液。
优选地,所述水泥选用P·O42.5水 泥、P·O52.5水泥中的一种或两种混合;所述消泡剂选用聚二甲基硅氧烷、聚氧丙烯氧化乙 烯甘油醚中的一种或两种混合物。
实施例2
如实施例1所述的一种钢结构表面防腐蚀工艺,其中部分工艺还可以采用以下方案:
所述底漆按重量份数计算由以下组分构成:水性环氧乳液28份、高分子环氧树脂5份、防锈颜料2份、二氧化钛25份、环己酮溶剂4份、羟乙基纤维素0.7份、消泡剂0.3份、基材湿润剂0.6份、防锈助剂0.4份。
所述防腐蚀涂液按重量份计由以下组分构成:水泥45份、氧化铁红24份、水15份、草酸镁6份、硅酸锌5份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
实施例3
如实施例1所述的一种钢结构表面防腐蚀工艺,其中部分工艺还可以采用以下方案:
所述底漆按重量份数计算由以下组分构成:水性环氧乳液22份、高分子环氧树脂10份、防锈颜料1份、二氧化钛21份、环己酮溶剂1份、羟乙基纤维素1.4份、消泡剂0.7份、基材湿润剂0.8份、防锈助剂0.1份。
所述防腐蚀涂液按重量份计由以下组分构成:水泥67份、氧化铁红20份、水12份、草酸镁4份、硅酸锌3份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
实施例4
如实施例1所述的一种钢结构表面防腐蚀工艺,其中部分工艺还可以采用以下方案:
所述底漆按重量份数计算由以下组分构成:水性环氧乳液33份、高分子环氧树脂7份、防锈颜料3份、二氧化钛17份、环己酮溶剂5份、羟乙基纤维素0.5份、消泡剂0.8份、基材湿润剂0.5份、防锈助剂0.5份。
所述防腐蚀涂液按重量份计由以下组分构成:水泥53份、氧化铁红25份、水10份、草酸镁10份、硅酸锌1份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。

Claims (8)

1.一种钢结构表面防腐蚀工艺,其特征在于,包括以下步骤:
先将钢材的表面进行清洗除锈,待干燥后进行喷砂粗化;
2)在钢材表面涂刷底漆,涂刷完成后静置10min,再送入烘箱在80-120℃的条件下烘干,使钢材表面形成底漆层;
3)通过喷漆装置吸附防腐蚀涂液喷涂在底漆层表面,使底漆层的表面获得防腐蚀涂层;
4)喷涂完成后静置30-60min,再送入烘箱在100-150℃的条件下烘烤40-70min后取出。
2.基于权利要求1所述的一种钢结构表面防腐蚀工艺,其特征在于,在步骤2)中,所述底漆按重量份数计算由以下组分构成:水性环氧乳液22-33份、高分子环氧树脂5-10份、防锈颜料1-3份、二氧化钛17-25份、环己酮溶剂1-5份、羟乙基纤维素0.5-1.4份、消泡剂0.3-0.8份、基材湿润剂0.5-0.8份、防锈助剂0.1-0.5份。
3.基于权利要求2所述的一种钢结构表面防腐蚀工艺,其特征在于,所述底漆按重量份数计算由以下组分构成:所述底漆按重量份数计算由以下组分构成:水性环氧乳液27份、高分子环氧树脂8份、防锈颜料2份、二氧化钛21份、环己酮溶剂3份、羟乙基纤维素1.1份、消泡剂0.6份、基材湿润剂0.7份、防锈助剂0.3份。
4.基于权利要求1所述的一种钢结构表面防腐蚀工艺,其特征在于,在步骤3)中,所述防腐蚀涂液按重量份计由以下组分构成:水泥45-67份、氧化铁红20-25份、水10-15份、草酸镁4-10份、硅酸锌1-5份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
5.基于权利要求4所述的一种钢结构表面防腐蚀工艺,其特征在于,所述防腐蚀涂液按重量份计由以下组分构成:所述防腐蚀涂液按重量份计由以下组分构成:水泥55份、氧化铁红23份、水13份、草酸镁7份、硅酸锌3份、水性环氧丙烯酸乳液8份、三聚磷酸钠5份、磷酸锌4份、重铬酸钾3份、阻锈剂3份、消泡剂1份。
6.基于权利要求1或4或5所述的一种钢结构表面防腐蚀工艺,其特征在于,所述防腐蚀涂液的制备工艺包括以下步骤:
1)将氧化铁红、水泥、硅酸锌分别用粉碎机粉碎后,再用球磨机分别球磨,球磨2-3h后,将原料倒入加热搅拌机中,在30-40℃的条件下搅拌混合30-60min;
2)按重量取水性环氧丙烯酸乳液、三聚磷酸钠、磷酸锌、草酸镁和40%的水,将上述的成分投入反应釜中,加热至上述的成分溶解后再进行搅拌,搅拌时间为2-3h,搅拌后静置;
3)再向反应釜中加入球磨后的氧化铁红、水泥、硅酸锌以及重铬酸钾、阻锈剂、消泡剂和60%的水,再对反应釜内物料进行搅拌,搅拌均匀后,得到防腐蚀涂液。
7.基于权利要求1所述的一种钢结构表面防腐蚀工艺,其特征在于:所述步骤2)中的烘干温度采用105℃。
8.基于权利要求1所述的一种钢结构表面防腐蚀工艺,其特征在于:所述步骤4)中的烘干温度采用132℃,烘烤时间采用60min。
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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109554064A (zh) * 2017-09-25 2019-04-02 上海梅山钢铁股份有限公司 一种用于钢结构表面的耐候耐蚀防腐涂层及其制备方法
CN109622332A (zh) * 2018-11-22 2019-04-16 淮北市菲美得环保科技有限公司 一种钢结构的防腐工艺

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109554064A (zh) * 2017-09-25 2019-04-02 上海梅山钢铁股份有限公司 一种用于钢结构表面的耐候耐蚀防腐涂层及其制备方法
CN109622332A (zh) * 2018-11-22 2019-04-16 淮北市菲美得环保科技有限公司 一种钢结构的防腐工艺

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