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    为什么清洗环氧地坪漆表面油污一定要用碱液

    2019-06-02 19:43:59 无锡盛发地坪科技有限公司 阅读

    使用碱液处理环氧地坪漆表面的油脂,是利用碱液对油脂的皂化和乳化作用除去油脂的原理。一般使用毛刷、抹布和棉纱等沾取碱液对环氧地坪除油表面进行擦拭清洁。除环氧地坪漆漆膜上油污用碱的必备条件为:能溶解油脂,能形成较高的碱度,具有分散胶状物质的作用,易水洗干净,化学稳定性好,耐热,无毒,腐蚀性小等。常用的材料有:氢氧化钠、碳酸钠、硅酸盐类、磷酸盐类。

    The principle of using alkali to treat the grease on the surface of epoxy floor paint is to remove the grease by saponification and emulsification of the grease. Generally, brushes, rags and cotton yarns are used to clean the degreased surface with alkali solution. The essential conditions for alkali removal from oil contamination on floor paint film are: dissolving grease, forming higher alkalinity, dispersing colloidal substances, easy washing, good chemical stability, heat resistance, non-toxicity, low corrosiveness, etc. Commonly used materials are: sodium hydroxide, sodium carbonate, silicates, phosphates. 

    碱液清洗环氧地坪漆漆膜上油污的基步骤是:预除油(若地面上附着的油污过厚时需采用这一步骤)→碱液除油→第一次水洗→第二次水洗→干燥。根据处理对象和油污程度的不同,可采取多种清洗方法,地面使用的主要是擦拭法。除油通常是表面处理的第一道工序,对于有些常年浸泡油脂的地面,有时除油后,仍会有油从下面泛上来,还需再次甚至多次除油。

    The basic steps of alkali solution cleaning oil contamination on epoxy floor paint film are: pre-degreasing (if the oil contamination on the surface is too thick, this step should be adopted)alkali solution degreasing_first water washing_second water washing_drying. According to the different treatment objects and the degree of oil pollution, various cleaning methods can be adopted. The main method used on the ground is wiping. Oil removal is usually the first process of surface treatment, for some perennial soaked oily ground, sometimes after oil removal, there will still be oil from below, but also need to be removed again or more times.

    地面碱液除油时,用毛刷、抹布和棉纱等蘸取碱液或混合碱性脱脂剂,对带油表面进行擦拭清洁。此法为手工操作,效率低、劳动条件差,但不需要专门设备、成本低、操作灵活性大。

    When removing oil from ground alkali liquor, brush, cloth and cotton yarn are dipped in alkali liquor or or mixed with alkaline degreaser to clean the oily surface. This method is manual operation with low efficiency and poor working conditions, but it does not need special equipment, low cost and great flexibility.


    影响碱液清洗环氧地坪漆表面油污效果的因素

    The factors affecting the effect of alkali cleaning on the surface of floor paint are as follows:

    1、碱液浓度。碱液的浓度高,可以加速皂化反应,使油污与溶液之间的表面张力降低,有利于除油。含有表面活性剂的碱液脱脂比单独的碱性物脱脂要好,说明碱液脱脂剂的组成和使用方法对除油有很大的影响。

    1. Alkali concentration. The high concentration of alkali solution can accelerate saponification reaction, reduce the surface tension between oil stain and solution, and is conducive to degreasing. The alkaline degreasing agent containing surfactant is better than alkaline degreasing agent alone, which indicates that the composition and use of alkaline degreasing agent have great influence on degreasing.

    2、除油温度。温度升高可以将油污软化,还有利于浸润和乳化作用,因此,便可提高除油效率。但是过高的温度又会消耗能量源和污染空气。

    2. Degreasing temperature. Increasing temperature can soften oil contamination, and is conducive to infiltration and emulsification. Therefore, oil removal efficiency can be improved. But too high a temperature will consume energy sources and pollute the air.

    3、机械作用。机械作用可使被涂物表面与除油液不断更新,加速油脂的皂化和乳化进程。

    3. Mechanical action. The mechanical action can make the surface of the coating and degreasing liquid renew continuously, and accelerate the saponification and emulsification process of the grease.

    4、水洗质量。基面再经过碱液清洗除油后,表面势必残留碱性清洗剂,他们地坪漆涂层都是有害的。清洗剂中的碱类、盐类吸潮后,是引起涂层附着力下降和起泡的主要原因之一。

    4. Washing quality. After the base surface is cleaned and degreased by alkali liquor, alkaline detergent is bound to remain on the surface, and their floor paint coatings are harmful. The alkali and salt in the cleaning agent absorbed moisture, which was one of the main reasons for the decrease of adhesion and foaming of the coating.


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