對(duì)環(huán)氧地坪涂料來(lái)說(shuō)，流平性是一個(gè)很重要的性能指標(biāo)。假如環(huán)氧地坪涂料的流平性不好，則涂膜表面不均一，出現(xiàn)明顯的刷痕，干燥過(guò)程中出現(xiàn)縮孔、針孔等弊病，損害其保護(hù)和美觀性能。改善流平性通常通過(guò)改善流平劑降低環(huán)氧地坪涂料與基材之間的表面張力，使環(huán)氧地坪涂料與基材具有更好的潤(rùn)濕性，并在涂膜的表面形成單分子層，提供均一的表面張力，從而改善環(huán)氧地坪涂料的流平性能。常用的流平劑有三類：聚合物流平劑，有機(jī)硅類和氟碳化合物類。

For epoxy floor coatings, leveling is an important performance index. If the levelness of the epoxy floor coating is not good, the surface of the coating is not uniform, there are obvious brush marks, shrinkage, pinholes and other defects in the drying process, which damage its protection and aesthetic performance. Improvement of leveling usually reduces the surface tension between epoxy floor coating and base material by improving leveling agent, so that the epoxy floor coating and base material have better wettability, and form a monolayer on the surface of the film, providing uniform surface tension, thereby improving the leveling performance of epoxy floor coating. There are three kinds of leveling agents commonly used: polymer leveling agents, organosilicon and fluorocarbons.影響環(huán)氧環(huán)氧地坪涂料流平性的因素：

Factors affecting leveling of epoxy floor coatings:

1、環(huán)氧環(huán)氧地坪涂料粘度對(duì)流平性的影響

1. Effect of Viscosity of Epoxy Floor Coatings on Leveling

不管是流動(dòng)還是流平都是環(huán)氧地坪涂料的運(yùn)動(dòng)形式，都要受到環(huán)氧地坪涂料粘度的影響。地坪漆涂料流平性方面的黏度檢測(cè)，根據(jù)流通的特性分為牛頓型流動(dòng)和非牛頓型流動(dòng)，檢測(cè)方法很簡(jiǎn)單，就是將地坪漆以固定角度倒入流量杯內(nèi)，如果流出時(shí)間在150秒以內(nèi)，則為黏度符合常規(guī)地坪漆施工標(biāo)準(zhǔn)。地坪漆的黏度，技術(shù)上比較容易調(diào)整，如果黏度過(guò)高，可以適當(dāng)加入一些溶劑進(jìn)行調(diào)低;如果黏度過(guò)低、可以添加一些增稠劑進(jìn)行提高。

Both flow and leveling are the movement forms of epoxy floor coatings, which are affected by the viscosity of epoxy floor coatings. Viscosity testing of floor paint leveling can be divided into Newtonian flow and non-Newtonian flow according to the flow characteristics. The testing method is simple, that is, the floor paint is poured into flow cup at a fixed angle. If the flow time is less than 150 seconds, the viscosity conforms to the conventional floor paint construction standards. The viscosity of floor paint is easy to adjust technically. If the viscosity is too high, some solvents can be added to reduce it properly. If the viscosity is too low, some thickeners can be added to improve it.2、環(huán)氧地坪涂料涂膜表面形態(tài)對(duì)流平性的影響

2. Effect of Surface Morphology of Epoxy Floor Coatings on Leveling

構(gòu)成涂膜形態(tài)不規(guī)整有兩種原因，一是由涂裝工具產(chǎn)生的痕跡，如刷痕取決于鬃毛刷的類型，刷痕的深淺不一。滾痕取決于滾涂機(jī)和繞線棒，滾涂或刮涂產(chǎn)生的凹凸的狀態(tài)不等。涂膜的不規(guī)整度越大流平越困難。二是基材形狀造成的，基材表面是粗糙的，要得到光滑平整的涂膜是比較困難的。找平的方法是刮胒子和厚涂底漆。遇到上述情況造成的表面流平問(wèn)題，最好的辦法是保持涂料的高表面張力，增強(qiáng)基材潤(rùn)濕鋪展能力，保持涂膜最佳極限厚度，采用良溶劑稀釋樹(shù)脂，并控制其揮發(fā)速度及平衡。

There are two reasons for the irregular shape of the coating film. One is the marks produced by the coating tools. For example, the brush marks depend on the type of bristle brush, and the depth of the brush marks is different. The roll marks depend on the roll coating machine and winding rod, and the concave and convex state produced by roll coating or scratch coating varies. The greater the irregularity of the film, the more difficult it is to leveling. Second, the shape of the base material is caused by the rough surface of the base material. It is difficult to get a smooth coating. The leveling method is scraping and thick primer. The best way to solve the problem of surface leveling is to maintain the high surface tension of the coating, enhance the wetting and spreading ability of the base material, maintain the optimum limit thickness of the coating film, use good solvent to dilute the resin, and control its volatilization rate and balance.3、涂膜干燥時(shí)間對(duì)流平的影響

3. The influence of film drying time on leveling

環(huán)氧地坪涂料的流平受粘度影響，粘度受溶劑影響。控制溶劑揮發(fā)速度，使環(huán)氧地坪涂料保持低粘度液態(tài)時(shí)間越長(zhǎng)越有利于涂膜的流平，也就是說(shuō)通過(guò)控制溶劑的揮發(fā)速度可獲得適宜的流平性。對(duì)環(huán)氧地坪涂料而言，溶劑的溶解參數(shù)不同，溶解力亦不同。溶解力強(qiáng)的，涂料固含量高，粘度低，流平性好，涂膜豐滿度高?；旌先軇┑娜芙鈪?shù)一定要與樹(shù)脂匹配?；旌先軇┒鄶?shù)是由真溶劑、稀釋劑和助溶劑組成，在溶劑揮發(fā)時(shí)一定要控制揮發(fā)平衡，溶劑揮發(fā)到最后，真溶劑要占相對(duì)大的比例。這樣可以保證涂膜在干燥過(guò)程中粘度不會(huì)發(fā)生突變，處于平衡增長(zhǎng)的狀態(tài)。對(duì)涂料的流動(dòng)與流平是有一定控制作用的。

The leveling of epoxy floor coatings is affected by viscosity and the viscosity is affected by solvent. Controlling the solvent evaporation rate and keeping the epoxy floor coatings in low viscosity liquid state for a longer time is beneficial to the film leveling, that is to say, by controlling the solvent evaporation rate, the appropriate leveling can be obtained. For epoxy floor coatings, the dissolution parameters of solvents are different, and the solubility is also different. Strong solubility, high solid content, low viscosity, good leveling, high film fullness. The dissolution parameters of mixed solvents must be matched with resin. Mixed solvents are mostly composed of real solvents, diluents and cosolvents. The volatilization equilibrium must be controlled when the solvent evaporates. The real solvents account for a relatively large proportion of the volatilization to the end. This ensures that the film viscosity does not change abruptly during drying and is in a state of balanced growth. It can control the flow and leveling of coatings.