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Working principle and construction of interface agent

界面剂是对某种物体表面进行处理的一类处理剂统称，它在工业生产、建筑、军事等领域都有广泛应用。界面剂通过对物体表面进行处理，该处理可能是物理作用的吸附或包覆，也经常是物理化学的作用。目的是改善或完全改变材料表面的物理技术性能和表面化学特性。以改变物体界面物理化学特性为目的产品，也可以称为界面改性剂。适用于混凝土、加气混凝土、小型砌块、轻质隔墙、砖混墙面、腻子批刮、瓷砖粘结、砖石背涂及保温板材等的基层界面预处理。

Interface agents are collectively referred to as a kind of treatment agent for certain surface treatment. They are widely used in industrial production, construction, military and other fields. The surface agent can be treated by physical adsorption or encapsulation through physical treatment of the surface of the object. The purpose is to improve or completely change the physical and technical properties and surface chemical properties of the material surface. In order to change the physical and chemical properties of the object interface, it can also be called interface modifier. It is suitable for pre treatment of concrete, aerated concrete, small block, light partition wall, brick concrete wall, putty batch scraping, ceramic tile bonding, brick and stone back coating and thermal insulation board.

界面剂工作原理

Working principle of interface agent

界面剂能填平基材墙面的孔隙，减少墙体的吸收性，保证覆面砂浆材料在更佳条件下黏结胶凝。同时界面剂担负着墙面和表面材料粘合的媒介，保证整体结合成一个永久黏合的整体。

The interface agent can fill the pores of the substrate wall, reduce the absorbability of the wall, and ensure that the mortar material is cementitious under better conditions. At the same time, the interface agent is responsible for the adhesion between the wall and the surface material, so that the whole body can be combined into a permanently cohesive whole.

界面剂的种类

Types of interfacial agents

市面上常见界面剂分为干粉型和乳液型两种

The common interface agents on the market are divided into two types: dry powder type and emulsion type.

干粉型界面剂 ：由水泥等无机胶凝材料、填料、聚合物胶粉和相关的外加剂组成的粉状物。具有高黏结力，优秀的耐水性、耐老化性。使用时按一定比例掺水搅拌使用。

Dry powder interface agent: powder composed of inorganic cementitious materials such as cement, filler, polymer glue powder and related admixtures. It has high bonding strength, excellent water resistance and aging resistance. When used, mixing and mixing in a certain proportion of water.

乳液型界面剂：由化学高分子材料为主要成分，辅以其他填料制成。乳液型界面剂具有更好的物理及化学稳定性，其应用广泛，适用于各种新建工程及维修改造工程，并且可涂于聚苯板、沥青涂层、钢板等不易抹灰的墙体材料。

Emulsion type interface agent: made of chemical polymer material and other filler. The emulsion interface agent has better physical and chemical stability. It is widely used in various new engineering and maintenance engineering, and can be applied to the wall material such as polystyrene board, asphalt coating, steel plate and so on.

界面剂的选购经验

Selection and purchase of interfacial agents

界面剂种类很多，虽然性能好的可以在各种混凝土面使用，但要令具体的使用性能更突出，需要针对不同基面有不同的选择。首先要知道施工的是什么基面，再要知道采取什么施工方式，才选择用什么材料。

There are many kinds of interface agents. Although they have good performance, they can be used in various concrete surfaces, but it is necessary to make specific use performance more prominent. There are different choices for different base surfaces. First of all, we need to know what the base of the construction is, and what kind of construction method to choose.

界面剂施工注意事项

Matters needing attention in the construction of interfacial agent

1、环境需干燥：施工环境须干燥，相对湿度应小70%, 通风良好。基面及环境的温度不应低于+5℃。

1, the environment needs to be dry: the construction environment must be dry, the relative humidity should be 70%, and the ventilation is good. The temperature of the base surface and environment should not be lower than +5 C.

2、清理墙面：基面应该干净、不松动、无灰尘，油脂、青苔、地毯胶等应清除掉, 松动及开裂部位应事先凿除并修补好。

2, clean up the wall: the base surface should be clean, not loose, no dust, grease, moss, carpet glue and so on should be removed, loose and cracked parts should be chiseled and repaired in advance.

3、原有裂缝地处理：用油灰刀把裂纹切开，尽量深一些，填入嵌缝石膏。注意一定要填实，填均匀。然后用牛皮纸把出现裂纹地地方贴上，干燥后再刮腻子或做其它工艺地处理。

3, the original crack treatment: use the putty knife to crack the cracks, as far as possible, filling the caulking gypsum. Be sure to fill it up and fill it well. Then use the kraft paper to paste the place where the cracks appear, then dry and then scrape the putty or make other processes to deal with it.

4、搅拌：如果是干粉型，每袋粉料（20公斤）加10升的水(水:粉=0.5 :1)，须用电动设备进行搅拌, 搅拌成均匀的稀浆状；如果是乳液型，水泥∶砂：界面剂=1∶2∶0.5比例混合搅拌均匀，须用电动设备进行搅拌, 搅拌成均匀的稀浆状。

4, stirring: if it is dry powder, each bag of powder (20 kilograms) and 10 liters of water (water: powder =0.5: 1), must be stirred with electric equipment and stirred into a uniform slurry. If it is emulsion type, cement: Sand: interface agent =1: 2: 0.5, mixing and mixing, must be stirred with electric equipment and stirred into a uniform slurry. .

5、涂刷与干燥：用滚筒或毛刷把浆料涂刷到基面上，不能漏刷，然后让涂面干燥（约12小时）。

5. Brushing and drying: apply a roller or brush to the base surface, do not brush and then dry the surface (about 12 hours).

6、养护与成品保护：必须加强通风,自然养护即可，待浆料实干并确认完全封闭基面后,方可开展后续的工序。

6, conservation and protection of finished products: we must strengthen ventilation and natural maintenance, so that we can carry out follow-up processes until the slurry is dry and confirmed that the base surface is completely closed.

7、工具的清洗：凝固的浆料很难清除。工具用后，应尽快用水清洗干净。

7. Cleaning of tools: solidified slurry is difficult to remove. After the tool is used, it should be cleaned with water as soon as possible.