钢结构/钢平台/设备和罐体防腐调研报告
一、常用涂料类别和性能综合比较:
二、涂料的最主要指标:
2.1施工工艺:
1、丙烯酸漆、环氧富锌、聚氨酯漆涂料施工一般为环氧富锌漆打底-环氧云铁做中间涂层-丙烯酸/聚氨酯漆漆做面漆;合计施工三道涂料。防腐性能取决于环氧富锌和环氧云铁,高含量环氧富锌涂布率低,成本高,低含量环氧富锌没有好的防腐性能。
2、醇酸漆类防腐性能较差,在化工企业腐蚀环境一般不考虑。
3、氟碳漆单价高,防腐性能取决于含氟量等,施工工艺一般为环氧富锌最底层-环氧云铁做中间涂料-氟碳漆做面
4、聚脲防腐性能一般,附着力较差,要用专用的底涂或好的环氧做底才有附着力
5、石墨烯涂料单价高,大部分是个概念
6、蜡性涂料为底中面合一的涂料,施工较为简单,98%固含量涂布率高,80um厚度可涂刷5到6平方,折合单价比较适中。
2.2附着力:
1、附着力是衡量涂料与基材粘结度的重要指标
2、附着力越大,涂料与基材粘合越牢固,膜层越不容易脱落
3、普通油漆的附着力仅有2~5Mpa
4、蜡性胶体涂料的附着力高达15Mpa ,是耐久年限长的重要原因之一。如狄林6900腻子附着率高达50Mpa
2.3致密性
1、漆膜孔隙值是衡量致密性的指标之一,其值越小,致密性越高
2、漆膜致密性越高,屏蔽性能越好,防腐的耐久年限也越长
3、狄林重防腐涂料的致密性远高于国标,是耐久年限长的重要原因之一
2.4成膜结构
![](https://p0.ssl.img.360kuai.com/t015c47e4e3dff4c9b2.png?size=612x318)
2.5环保性
1、醇酸漆、丙烯酸漆、环氧、聚氨酯漆、氟碳漆、石墨烯都有水性涂料和油性涂料两类,油性涂料溶剂和固体含量都为50%左右,VOC-420-500g/L,水性涂料VOC在70-100g/L;
2、聚脲/蜡性涂料98-100%固体含量,VOC含量2-8g/L
2.6漆膜延展性
传统树脂类涂料-大部分为刚性,没有任何延展性,在金属或混凝土热胀冷缩时容易开裂和脱落
蜡型涂料-又刚又柔涂料,刚能到达3H,柔能到达360折叠
三、防腐性能测试:
![](https://p0.ssl.img.360kuai.com/t01c91cbac05c11bdce.png?size=638x469)
![](https://p0.ssl.img.360kuai.com/t01eb35e834bd514244.png?size=629x426)
四、国内外小部分使用单位:
五、企业用蜡性涂料前后
![](https://p0.ssl.img.360kuai.com/t018c61f75434d597b6.png?size=658x337)
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![](https://p0.ssl.img.360kuai.com/t018461c2f22cf28b48.png?size=565x523)
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