CN107892885A - 一种钢铁构筑物防锈防腐蚀胶黏膏 - Google Patents
一种钢铁构筑物防锈防腐蚀胶黏膏 Download PDFInfo
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Abstract
本发明涉及防蚀材料，具体的说是一种钢铁构筑物防锈防腐蚀胶黏膏。按重量百分比计其成分为：聚丁烯50‑60％、有机膨润土8‑15％、羧甲基壳聚糖2‑10％、二氧化钛0.1‑1％、云母粉18‑25％、石墨烯0.2‑1％、锌粉7‑15％。本发明防锈防腐蚀胶黏膏，通过加入石墨烯和锌粉，增加了阴极保护作用，并且具有阻隔水分以及Cl‑等腐蚀性介质渗透的优点，使得防锈防腐蚀胶黏膏具有很强的附着力、基底表面缺陷修复性以及物理隔绝性，同时服役寿命长、柔韧性和耐老化性强，具有优异的防腐蚀性能。
Description
技术领域
本发明涉及防蚀材料，具体的说是一种钢铁构筑物防锈防腐蚀胶黏膏。
技术背景
随着我国经济不断增长，大型的工程建设不断增加，钢铁材料的使用量随之增加，同时钢铁材料的腐蚀问题也越来越受关注。腐蚀不仅会带来经济上的损失，同时还危及人身安全并且不利于自然资源和环境的保护。防锈防腐蚀黏膏由于施工简单、对表面清理要求低、可以适用各种复杂形状结构，从而作为一种有效的防腐蚀方法被广泛应用。但以往使用的防锈防腐蚀胶黏膏晶粒粗大，无法进入腐蚀表面的细小孔洞和缺陷，胶黏膏和基材空隙部分腐蚀仍难以避免，同时物理隔绝性能有限，对于Cl-等小尺寸腐蚀性离子的隔绝作用差，耐高温、耐老化、硬度和抗冲击性有限，其中的缓蚀剂不足以起到很好的保护作用，因此防腐蚀效果不理想，并且缓蚀剂成分对环境有一定的影响。
发明内容
为解决以上问题，本发明公开了一种钢铁构筑物防锈防腐蚀胶黏膏及其应用。
为实现上述目的，本发明采用技术方案为：
一种钢铁构筑物防锈防腐蚀胶黏膏，按重量百分比计其成分为：聚丁烯50-60％、有机膨润土8-15％、羧甲基壳聚糖2-10％、二氧化钛0.1-1％、云母粉18-25％、石墨烯0.2-1％、锌粉7-15％。
所述石墨烯粉末层数为3-7层，粒径＜10μm。
所述锌粉为片状或球状高纯锌粉，规格为500-1000目。
所述防锈防腐蚀胶黏膏按重量百分比计其成分为：聚丁烯50-55％、有机膨润土9-10％、羧甲基壳聚糖3.5-5％、二氧化钛0.1-0.5％、云母粉19-22％、石墨烯0.2-0.5％、锌粉10-15％。
钢铁构筑物防锈防腐蚀胶黏膏的应用，所述防锈防腐蚀胶黏膏在对钢铁构筑物进行防锈、防腐蚀中的应用。
本发明所具有的优点：
本发明防锈防腐蚀胶黏膏中改性成分石墨烯和锌粉的加入，使得防腐蚀效果较以往增强。羧甲基壳聚糖代替传统的缓蚀剂，达到绿色环保要求，具体为：
1.本发明由于含有锌粉粒子，锌粉的化学性比较活泼，会优先与腐蚀介质发生反应，从而保护底材不被腐蚀，起到阴极保护作用。
2.石墨烯的小尺寸可以细化晶粒，使得石墨烯可以填充到孔洞和缺陷中，另外由于石墨烯的二维片层结构使其在涂料中层层叠加，形成了致密的物理隔绝层，小分子腐蚀介质很难通过。同时石墨烯的表面效应使得石墨烯与水的接触角很大，对水的浸润性很差，水分子很难被石墨烯吸收。这在很大程度上阻止和延缓了水分子和其他腐蚀性介质浸入金属基体，增强了防蚀膏的防腐性能。
3.石墨烯的高导电性促进了锌粉的牺牲阳极阴极保护作用。作为电位更负的金属与被保护金属电连接，并处于同一电解质中，使锌上的电子转移到被保护金属上去，使整个被保护金属处于一个较负的相同的电位下。该方式简便易行，不需要外加电源，很少产生腐蚀干扰。
附图说明
图1为本发明实施例1的试验试片腐蚀形貌，左为正面图，右为反面图。
图2为本发明实施例2的试验试片腐蚀形貌，左为正面图，右为反面图。
具体实施方式
下面结合附图和实施例对本发明进一步描述。
本发明防锈防腐蚀胶黏膏，通过加入石墨烯和锌粉，增加了阴极保护作用，并且具有阻隔水分以及Cl-等腐蚀性介质渗透的优点，使得防锈防腐蚀胶黏膏具有很强的附着力、基底表面缺陷修复性以及物理隔绝性，同时服役寿命长、柔韧性和耐老化性强，具有优异的防腐蚀性能。
实施例1
按重量百分比成分为：聚丁烯55％、有机膨润土10％、羧甲基壳聚糖3.5％、二氧化钛0.2％、云母粉21％、石墨烯0.3％、锌粉10％。石墨烯粉末层数为4层，粒径为8μm。锌粉为球状高纯锌粉，规格为800目。将所获得防锈防腐蚀胶黏膏涂敷于尺寸为50×25×3mm的Q235碳钢试片，盐雾试验30天后清除腐蚀产物(参见图1)。由图1可见，试片表面出现腐蚀斑点，但腐蚀坑较浅，说明腐蚀轻微，防锈防腐蚀胶黏膏起到一定的保护作用。
实施例2
按重量百分比成分为：聚丁烯50％、有机膨润土9％、羧甲基壳聚糖5％、二氧化钛0.5％、云母粉20％、石墨烯0.5％、锌粉15％。石墨烯粉末层数为4层，粒径为8μm。锌粉为球状高纯锌粉，规格为800目。将所获得防锈防腐蚀胶黏膏涂敷于尺寸为50×25×3mm的Q235碳钢试片，盐雾试验30天后清除腐蚀产物(参见图2)。由图2可见，相对于实施例1，实施例2的试验试片表面腐蚀更轻微，表明实施例2的防锈防腐蚀胶黏膏保护效果更好。
采用Q235碳钢盐雾挂片实验及宏观形貌测定实施例的防蚀效果，如下(参见表1)，
表1试验结果
按照金属耐蚀性十级标准腐蚀速度均＜0.001mm/a，耐蚀等级为1级，属于完全耐蚀材料。因此，通过保护，试片的腐蚀速率大大降低。该防锈防腐蚀胶黏膏可以钢铁结构物进行良好的保护，延长钢铁结构物的使用寿命。
Claims (5)
1.一种钢铁构筑物防锈防腐蚀胶黏膏，其特征在于：按重量百分比计其成分为：聚丁烯50-60％、有机膨润土8-15％、羧甲基壳聚糖2-10％、二氧化钛0.1-1％、云母粉18-25％、石墨烯0.2-1％、锌粉7-15％。
2.按权利要求书1所述的钢铁构筑物防锈防腐蚀胶黏膏，其特征在于，所述石墨烯粉末层数为3-7层，粒径＜10μm。
3.按权利要求书1所述的钢铁构筑物防锈防腐蚀胶黏膏，其特征在于，所述锌粉为片状或球状高纯锌粉，规格为500-1000目。
4.按权利要求1-3任意一项所述的钢铁构筑物防锈防腐蚀胶黏膏，其特征在于，所述防锈防腐蚀胶黏膏按重量百分比计其成分为：聚丁烯50-55％、有机膨润土9-10％、羧甲基壳聚糖3.5-5％、二氧化钛0.1-0.5％、云母粉19-22％、石墨烯0.2-0.5％、锌粉10-15％。
5.按权利要求1所述的钢铁构筑物防锈防腐蚀胶黏膏的应用，其特征在于，所述防锈防腐蚀胶黏膏在对钢铁构筑物进行防锈、防腐蚀中的应用。
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| CN103289608A (zh) * | 2012-12-06 | 2013-09-11 | 侯保荣 | 一种氧化聚合型防锈防腐蚀胶黏膏 |
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| KR20170127632A (ko) * | 2016-05-12 | 2017-11-22 | 성균관대학교산학협력단 | 곡면유리 성형을 위한 그래핀 코팅 금형 및 그 제조방법 |
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| CN103113491A (zh) * | 2011-11-17 | 2013-05-22 | 中国科学院海洋研究所 | 一种羧甲基壳聚糖及其制备和应用 |
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| CN105086754A (zh) * | 2013-03-06 | 2015-11-25 | 常州第六元素材料科技股份有限公司 | 一种双组分石墨烯防腐涂料 |
| CN105623471A (zh) * | 2016-03-10 | 2016-06-01 | 天津市烯腾科技有限公司 | 一种环氧树脂-石墨烯-锌粉防腐涂料及其制备方法 |
| KR20170127632A (ko) * | 2016-05-12 | 2017-11-22 | 성균관대학교산학협력단 | 곡면유리 성형을 위한 그래핀 코팅 금형 및 그 제조방법 |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115612356A (zh) * | 2022-10-21 | 2023-01-17 | 青岛迪恩特尚核新材料科技有限公司 | 一种海洋钢铁构筑物防锈防腐蚀胶黏膏 |
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