油漆发展故事之环氧富锌底漆

富锌底漆作为目前主流的钢构防锈防腐底漆，如果能在施工简便性、VOC含量、有效含量、涂层的配套性等方面有所改进，必然有着更为广阔的市场前景。

Zinc rich primer as the current mainstream Steel Anti Rust anti-corrosion primer, if can improve in the construction is simple, the content of VOC, the effective content, coating facilities etc., is bound to have a more broad market prospects.

(1)低表面处理富锌底漆——施工更简便

(1) low surface treatment of zinc rich primer -- construction more convenient

由于富锌底漆在施工时对钢材表面前处理要求较为苛刻和严格，特别是相对表面前处理难以达到标准时，因此作为预涂底漆的富锌底漆有朝着低表面处理富锌底漆方向发展的趋势。该产品在富锌底漆中引入化锈、稳锈剂活性颜料和其它一些防锈颜料替代部分锌，可以直接涂装在已锈钢结构基材上，对于锈蚀不是很严重的钢材除去浮锈即可以直接现场施工。其中，化锈、稳锈剂的主要作用是把活性的锈惰性化，呈稳定状态，并能很好地附着在钢材表面起到一般防锈底漆的作用，从而达到除锈、稳锈、转化三方面结合的功能。

In the construction of the zinc rich primer for steel surface pretreatment requirements more strict, especially the relative surface pretreatment is difficult to reach the standard, so as the precoating primer zinc rich primer is toward the trend of low surface treatment of zinc rich primer direction. The product into the rust, rust stabilizator activity of pigment and other anti rust pigment replacing part of zinc in zinc rich primer, can be directly applied on stainless steel substrate has structure, the steel corrosion is not very serious, remove rust can be on-site construction. The main function of stability, rust, rust rust agent is the inert activity, is stable, and can be a very good adhesion to the general antirust primer on steel surface rust, rust, so as to achieve the steady transformation, the combination of the three functions.

(2)低VOC或水性富锌底漆——环保性能佳

(2) or low VOC waterborne zinc rich primer -- environmental performance

受石油资源和环境保护法规对有机挥发化合物(VOC)的限制，涂料工业正朝着水性、粉末、高固体分、光固化等环保型涂料方向发展。富锌底漆也不例外，正由溶剂型向水性方向发展。其中的无机富锌底漆也由溶剂型正硅酸乙酯向水性硅酸盐方向发展。

The oil resources and environmental regulations on volatile organic compounds (VOC) limit, the coating industry is moving in the water, powder, high solid content, curing and other environmentally friendly coatings development. Zinc rich primer is not exceptional also, by the solvent to aqueous direction. The inorganic zinc rich primer from the solvent ethyl silicate aqueous silicate direction to the development of.

(3)低粘度，高固含涂料——有效含量高

(3) with low viscosity, high solid coatings -- high effective content

在水性无机富锌底漆中，已经由最初的高粘度、低物质量比逐步改进成现在的低粘度、高物质量比类型。最初涂料的粘度太高，容易胶凝，稳定性差，施工不方便。现在高物质量比，树脂中可以参与涂膜交联的SiO2越多，则树脂在成膜过程中可以容纳的锌粉越多，涂膜的防腐性能越好，涂层的固化时间也大为缩短。但国内高模数硅酸钾富锌底漆尚处于开发阶段，目前国内推广的大部分依赖进口，价格较贵。同时也有报道，低模数(2～4)硅酸钾富锌底漆也有发展，该涂料节省材料、降低成本，经济效益可观。

In waterborne inorganic zinc rich primer, high quality, low viscosity has been from the initial ratio gradually improved the quality of low viscosity, high material now than type. The first coating viscosity is too high, easy to coagulation, poor stability, inconvenient construction. Now the high molar ratio, more SiO2 resin can be involved in crosslinking resin, zinc powder is more in the film-forming process can accommodate the anticorrosion performance, better coating, curing time of coating is much shorter. But the domestic high modulus potassium silicate zinc rich primer is still in the development stage, the promotion of the most dependent on imports, the price is more expensive. There are also reports, low modulus (2 ~ 4) zinc silicate primer has developed, the coating can save material, reduce cost, economic benefits.

(4)配套体系的完善——涂层整体性能的提升

(4) supporting system -- the coating performance

对于单一的富锌涂层研究较多，对于其作为多道涂层的底漆的研究不多见。而富锌底漆中的锌粉是典型的‘两性物’，既不耐强酸也不耐强碱，这就决定了富锌涂层不宜直接作为面漆使用。在大多数工程中，都是富锌底漆作为底漆与氟碳漆、聚氨酯漆、聚硅氧烷涂料等配套使用，各种富锌底漆的性能差异较大，因此与别的涂料在配套使用中的兼容性问题值得研究。还有一点就是只重视富锌底漆的性能，而忽视整体配套涂层中对富锌底漆的封闭、封孔。

For a single zinc rich coatings for more research, the multi coating primer research does not see more. The zinc and zinc rich primer is typical of the 'gender', is not resistant to strong acid or alkali resistance, which determines the zinc rich coating should not be used directly as the finish. In most engineering, are zinc rich primer as primer and fluorocarbon paint, polyurethane paint, such as supporting the use of silicone coating, performance differences between the various zinc rich primer paint and other large, thus supporting the use of the compatibility issues worthy of study. Another point is that only pay attention to the performance of zinc rich primer, and ignore the whole coating of zinc rich primer closed, sealing.

(5)底面合一富锌底漆

(5) at the bottom of a zinc rich primer

对于富锌底漆用树脂适当地改性拼用，同时提高锌粉的含量，使涂层既能高效防腐，又能有很好的耐老化性能，这种“底面合一”富锌底漆值得研究。

For zinc rich primer with resin modified with proper spelling, while increasing the zinc content, so that the coating can not only efficient anticorrosion, and can have good aging resistant performance, the "bottom" zinc rich primer is worth studying.