The modification of cement mortar by polymer enables the two to obtain complementary effects, so that polymer-modified mortar can be used in many special occasions. In addition, due to the potential of dry mix mortar in quality control, construction operation, storage and environmental protection, dispersible polymer powder provides an effective technical means for the production of special dry mortar products. As mentioned above, the three major varieties of special dry mortar products are tile adhesive, bonding and plastering mortar in external wall insulation system, and self-leveling mortar. Combined with the above analysis of the mechanism of redispersible polymer powder , we discuss its role in these three typical specialty dry mortar products.
Because of its decorative and functional properties such as durability, water resistance and ease of cleaning, tiles are widely used: walls, floors, ceilings, fireplaces, murals and swimming pools, and can be used both indoors and out. The traditional method of pasting ceramic tiles is the thick layer construction method, that is, the ordinary mortar is first applied to the back of the tiles, and then the tiles are pressed to the base layer. The thickness of the mortar layer is about 10 to 30 mm. Although this method is very suitable for construction on uneven bases, its disadvantages are low tiling efficiency, high technical proficiency requirements for workers, increased risk of falling off due to poor flexibility of the mortar, and difficulty in checking the quality of the mortar at the construction site. Strict control. This method is only suitable for high water absorption tiles, and the tiles need to be soaked in water before attaching the tiles to achieve sufficient bond strength.
The tiling method currently widely used in Europe is the so-called thin-layer bonding method, that is, a toothed spatula is used to scrape the polymer-modified tile adhesive batch on the surface of the base layer to be tiled in advance to form raised stripes and uniform thickness of mortar layer, then press the tile on top of it and twist slightly, the thickness of the mortar layer is about 2 to 4 mm . Due to the modification effect of cellulose ether and redispersible polymer powder, the use of this tile adhesive has good bonding properties to different types of base layers and surface layers including fully vitrified tiles with extremely low water absorption. Good flexibility to absorb stress due to temperature differences, etc., and excellent sag resistance, long enough open time to greatly speed up application in thin layers, easy handling and no need to pre-wet the tiles in water. This construction method is easy to operate and easy to carry out on-site construction quality control.
Youngcel HPMC/MHEC is widely used as Chemical Auxiliary Agent for Tile Adhesive,Cement Plaster, Dry mix mortar, Wall putty, Coating, Detergent and so on.And we can provide you lowest price and best quality.
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Post time: Aug-17-2022