涂料是国民经济发展不可缺少的材料之一,由于涂料的特殊作用较多,因而涂料品种繁多。建筑涂料是指涂料涂饰于物体表面能与基体材料很好粘结并形成完整而坚韧保护膜的物料。它主要用于建筑内外墙涂料表面、可提高涂层体系的装饰性和保护性。适用于以丙烯酸树脂、硅改性丙烯酸树脂、聚氨基甲酸酯树脂等为主要成膜物、加入助剂、水或溶剂等配制而成的罩光清漆。那么用罩光清漆标准检测性能要求是什么呢?今天我们就来介绍一下 HG/T 5056-2016对建筑涂料用罩光清漆的规定。
在进行测试之前,我们需要先了解建筑涂料用罩光清漆的分类。我们可以According to建筑涂料用罩光清漆的不同用途,将它分为内用和外用两类。
检测要求
1、在容器中状态:在容器中状态:首先我们打开容器用调刀或搅棒进行搅拌,且允许容器底部有沉淀。若经搅拌易于混合均匀,则评为“搅拌后均匀无硬块”。
2、低温稳定性:我们需要进行三次循环的测试,若测试结果为内用和外用皆不变质,方算达标。
3、施工性:如施工过程中无困难,则评为“施涂无障碍”。
4、干燥时间:若测试结果为表干的干燥时间≦1h,实干的干燥时间≦24,则算达标。
5、涂膜外观:我们需将样板放置24h,在散射日光下目视观察。如果涂膜表面色调均匀一致,无流挂、无针孔、无气泡、无皱纹等涂膜病态现象,则评为“正常”。
6、光泽的测试由双方按实际情况进行商定,无其他要求。
7、透光率:测试所需的光源为C光源。我们先测试未涂漆玻璃板的透光率,并在测试区域外围做好记号,若测试结果为内外用皆≥90%,则算达标。
8、雾度:测试所需的光源为C光源。我们先测试未涂漆玻璃板的雾度,并在测试区域外围做好记号,若测试结果为外用”无异常“,则算达标。
9、耐水性、耐酸雨性:若测试结果为外用的耐水性和耐酸雨性”无异常“,则算达标。
10、耐碱性:若测试结果为内用的耐碱性在24h内”无异常“,外用耐碱性在48h内”无异常“,则算达标。
11、涂层耐温变性:我们需要进行三次循环测试,若测试结果为外用涂层耐温变性”无异常“,则算达标。
12. Erosion resistance: The model needs to be washed 2000 times, if the paint film is not damaged, it is considered to be up to standard.
13. Stain resistance: white paint is required in the test. If the test result is stain resistance ≥ 45%, it is considered to be up to standard.
14. Stain resistance: White paint is required in the test. If the test result shows that the stain resistance is ≦15%, it is considered to be up to standard.
15. Anti-yellowing property: After 168 hours, the index of the sample is ΔE≦3, which means it is up to the standard.
16. Resistance to artificial weathering: The test needs to be matched with white paint. If the sample does not blister, peel off, or crack within 1000 hours, powdering ≦ grade 1, discoloration ≦ grade 2, and loss of light ≦ grade 1, it is rated as "passed" ".
17. Adaptability to the underlying coating: If the sample needs to be placed for 24 hours first, then visual observation test is carried out under scattered sunlight. If there is no phenomenon such as bite, crack, discoloration, opacity, and blooming, the evaluation is "passed". .

