如今外墙涂装大多采用外墙涂料进行装饰，抗碱封闭底漆很大的特点就是对混凝土有超强的附着力，防止水的渗透，抗碱隔离作用，对基层的碱分能有效隔离，防止碱分的渗出破坏涂层。对疏松粉化的基底进行补强作用，加固基底。外墙抗碱封闭底漆到底有多重要？

Nowadays, the exterior wall coating is mostly used for decoration. The great feature of the alkali resistant sealing primer is that it has super adhesion to the concrete, prevents water penetration, and has the effect of alkali resistance isolation. It can effectively isolate the alkali content of the base layer and prevent the alkali content from seeping out and damaging the coating. Reinforce the loose and powdered base. How important is alkali-resistant sealing primer for exterior wall?

1、封闭作用：墙面一般使用水泥，而水泥通常会返碱，会在表面形成一层碱霜，出现成片成片的白色或结晶体或粉末状等，造成花墙。出现泛碱的根本原因，大都是底漆质量不过关或者是未使用底漆或者是腻子墙面碱性太强。其他如发生的变黄或颜色改变也大多与此有关。封闭底漆可以起到封闭作用，缓解这种情况。

1. Sealing effect: The wall is usually made of cement, and the cement will usually be re-alkali, which will form a layer of alkali frost on the surface, and flakes of white or crystal or powder will appear, resulting in flower wall. The basic reason for the occurrence of alkali is that the quality of the primer is poor, or the primer is not used, or the putty wall is too alkaline. Most of the other yellowing or color changes are also related to this. The sealing primer can play a sealing role and alleviate this situation.

2、保证吸水率一致：基底的含水率是必须高度注意的问题，尤其要注意同一墙面可能是不同材质，不同吸水率的基底材料，会导致外墙涂料很终饰面出现水印或色差，安全可靠的预防方法是在施工前预先满涂厂家生产的抗碱封闭底漆，使基底吸水率均匀一致。另外基底吸水率不一致，会导致涂层干燥时间不一致，吸收不均匀，也会导致出现色差。

2. Ensure the consistency of water absorption: the water content of the base must be paid high attention, especially the same wall may be made of different materials, and the base materials with different water absorption will lead to watermarks or color differences in the final finish of the exterior wall coating. The safe and reliable prevention method is to fully coat the alkali resistant sealing primer produced by professional manufacturers before construction to make the water absorption of the base uniform. In addition, the inconsistent water absorption of the substrate will lead to inconsistent drying time of the coating, uneven absorption and color difference.

3、墙面牢固性：质量不过关的腻子层时间不久会粉化，如果没有底漆的保护，面层也会随之出现粉化甚至脱落。底漆能够封固基底，使腻子层更加牢固，从而延长延长面层的寿命，提高施工质量。

3. Wall firmness: The putty layer with poor quality will pulverize soon. If there is no primer protection, the surface layer will also pulverize or even fall off. The primer can seal the base and make the putty layer more firm, thus extending the service life of the surface layer and improving the construction quality.

作为用户要清楚了解，透明底漆的综合性能要好于有色底漆，简单的了解，有色底漆是在透明底漆的基础上添加了各种颜色的色浆，色浆本身只是起到改变颜色的作用，一定量的色浆计入底漆中，会降低产品本身的性能，因此，在项目选材时，尽可能规定施工单位要选用透明封闭底漆。更多产品事项可以随时联系我们//www.gochiism.com了解！

As a user, you should clearly understand that the comprehensive performance of transparent primer is better than that of colored primer. Simply understand that colored primer is based on transparent primer with various color pastes added. The color pastes themselves only play a role in changing the color. A certain amount of color pastes will be included in the primer, which will reduce the performance of the product itself. Therefore, when selecting materials for the project, it is required that the construction unit should select transparent sealing primer as far as possible. For more product matters, please feel free to contact us //www.gochiism.com Understand!