影响油漆防腐质量的因素
点击数:次 2015-04-16 09:38
丙烯酸聚硅氧烷涂料作为一种高性能耐候面漆,有很多的优点,例如环保,保光、保色,耐酸、碱、盐雾等腐蚀,但其对施工工艺也有着严格的要求。如果不能严格按照工艺施工,也会出现附着力不足、外观缺陷等问题,影响聚硅氧烷涂层质量的因素,主要有:施工环境、涂装设备、稀料添加比例及相关施工事项等方面,严格遵循施工要求,可最大程度的确保丙烯酸聚硅氧烷涂层的质量符合预期。
Acrylic polysiloxane coating is a kind of high performance weather resistant paint, has many advantages, such as environmental protection, light, color, acid, alkali, salt fog corrosion, but its construction technology also has strict requirements. If not in strict accordance with the process of construction, will also be problems, such as insufficient adhesion appearance defects, the main influence factors, the quality of the silicone coating: coating equipment, construction environment, material proportion and construction related matters, strictly follow the requirements of construction, to the maximum extent to ensure the quality of acrylic polysiloxane coating in line with expectations.
1、 环境因素:
1, environmental factors:
温度、湿度、通风对涂层的附着力有着较大影响,在温度低于15℃、湿度小于60%,通风条件一般的情况下,涂层附着力较差。通过改善施工条件(增温增湿),在聚硅氧烷固化前期(即施工后的3~12H)保持湿度在60%~85%,固化后期将湿度控制在80%以下;温度控制在15~25℃,并加强通风,这样就可保证聚硅氧烷的良好固化。在这种情况下,涂层附着力的检测结果一般不低于1级。
Had a great influence on temperature, humidity, ventilation, adhesion of the coating, at a temperature below 15 DEG C, less than 60% humidity, ventilation conditions in general, poor adhesion of coating. By improving the construction conditions (by Wen Zengshi), in the polysiloxane curing period (that is, after the construction of the 3~12H 60%~85%) to maintain the humidity at the stage of curing, the humidity is controlled below 80%; temperature control at the temperature of 15~25 DEG C, and strengthen the ventilation, so that it can ensure good curing polysiloxane. In this case, the results of detection of coating adhesion is generally not less than 1.
2、设备因素:聚硅氧烷是高固体含量的涂料,故对施工设备的选择也较为严格,通常选择压力比为65:1的GPQ6C泵,能使高固体含量的聚硅氧烷得到良好的雾化。
2, equipment factors: polysiloxane is a high solid content of coating, so the construction equipment selection is also more stringent, usually choose pressure ratio of GPQ6C pump 65:1, can make the polysiloxane with high solid content has good atomization.
在喷嘴的选择上,分别使用了08-25施工效果较理想,该型号的喷嘴比其他型号施工效率有所降低,但却能更好的控制涂料的流量,最终达到漆膜细腻、光泽饱满的外观效果。
In the choice of nozzle, used 08-25 construction effect is ideal, the type of nozzle is lower than that of other types of construction efficiency, but it can better control the coating flow, and ultimately achieve film delicate, shiny appearance.
3、稀释剂比例:添加稀释剂是在涂装施工中普遍而又重要的一个环节,适量添加稀释剂能够调整涂料的粘度以达到涂料的良好雾化,从而避免施工过程中产生的针孔、干喷、流挂等弊病。
3, the proportion of diluent diluent: add in painting in general and important link, add right amount of diluent to adjust the viscosity of coating in order to achieve good atomization of the coating, so as to avoid the construction process of the pinhole, dry spray, sagging and other ills.
4、其他:聚硅氧烷的合理使用:由于聚硅氧烷的固化剂(B组份)对湿度非常的敏感,直接暴露于空气中2H就会报废,因此,施工中应合理安排,避免不必要的浪费,若因特殊原因未使用完,应对各组份立即进行严密封存。
4, others: rational use of polysiloxane: as the curing agent of polysiloxane (B) are very sensitive to humidity, directly exposed to the air in 2H will be scrapped, therefore, should be reasonable arrangements for the construction, to avoid unnecessary waste, if due to special reasons not to use, should be closely sealed components.
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