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    环氧地坪呈白色状的各原因及预防措施

    2018-11-05 09:17:21 无锡盛发地坪科技有限公司 阅读

    环氧地坪泛白多发生在涂装挥发性涂料的场合,严重时完全失光,涂膜上出现微孔,力学性能下降。环氧地坪泛白是指涂装过程中和刚涂装完毕的涂层表面涂膜呈乳白色,类似云彩那样变白失光的现象。环氧树脂地坪泛白产生的原因,预防措施和解决办法如下:

    The whitening of epoxy floor mostly occurs in the occasion of coating volatile coatings, which completely loses its gloss when it is serious, micro-holes appear on the coatings and mechanical properties decrease. Epoxy flooring whitening refers to the phenomenon that the coating film is milky white in the process of painting and on the surface of the coating just finished, which is similar to the phenomenon of clouds whitening and losing light. The reasons for the whitening of epoxy floor, preventive measures and solutions are as follows:

    原因一:涂膜在干燥中,由于所用的有机溶剂的沸点低,挥发太快,降低了涂膜的表面温度,会使部分水汽凝集在涂膜的表面形成白雾状,引起浑浊或是失光。

    Reason 1: In the drying process, because of the low boiling point of the organic solvents used, volatilization is too fast, which reduces the surface temperature of the film, and makes part of the water vapor condense on the surface of the film to form a white mist, causing turbidity or loss of light.

    预防措施:添加防潮剂,注意施工现场的环境温度,和湿度

    Precautions: add moisture-proof agent, pay attention to ambient temperature and humidity at construction site.

    原因二:施工现场空气湿度太高(相对湿度超过80%) 涂装场地的环境温度最好在15-25度,相对湿度不高于70%

    Reason 2: The ambient temperature of the painting site should be 15-25 degrees, and the relative humidity should not be higher than 70% when the air humidity is too high (relative humidity is over 80%).

    预防措施:涂料和稀释剂中含水,或压缩空气带入水分 防治通过溶剂和压缩空气带人水分

    Preventive measures: water in coatings and diluents, or compressed air into water prevention and control through solvent and compressed air to bring human moisture

    原因三:快干漆施工中使用大量低沸点的稀释剂,涂膜不但会发白,有时也会出现多空状和细裂纹

    Reason 3: Quick-drying paint construction uses a large number of low boiling point diluents, the film will not only whiten, sometimes there will be many vacancies and fine cracks.

    预防措施:快干漆施工中应选用配套的溶剂,而去稀释剂的用量也不宜过多,避免底漆中混入沥青和杂酚油。

    Preventive measures: In the construction of quick-drying paint, matching solvents should be selected, and the amount of diluent should not be too much, so as to avoid mixing asphalt and creosote oil into primer.

    原因四:凝集在湿膜上的水汽,会使涂膜中的树脂或高分子集合物部分析出,引起涂膜发白

    Reason 4: Water vapor agglutinated on wet film will precipitate part of resin or polymer aggregate in the film and cause whitening of the film.

    预防措施:可在涂料中加入适量的防潮剂(仿白剂)或丁醇类憎水剂

    Preventive measures: appropriate amount of moisture-proof agent (white imitation agent) or butanol type hydrophobic agent can be added to the coating. 


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