Hydroxypropyl methylcellulose HPMC is often used in many industries. Although many people do not understand it very well, it does affect various industries. In the construction process of the construction industry, it is usually mainly used for wall masonry and plastering. Caulking and other mechanical construction fields, especially in decorative construction. It is often used for tiling tiles, marbles, and some plastic decorations. It has a high degree of adhesion and can also reduce the amount of cement used. It is used in the coating industry. Mainly used as a thickener, can make the layer fine and bright, not easy to remove powder, improve the leveling performance, etc., especially for the application in the field of building self-leveling mortar.
Self-leveling mortar is primarily a is smooth and the self-compacting capability of special dry mortar products, its self-compacting, since the ability to achieve a seamless and smooth surface layer is quite important, for good self-leveling products, will have the appropriate operating performance, and be able to in the construction time, maintain its overall performance of, and self-healing ability, so, This requires mortar in this period fully ensure the stability and uniformity, and secondly, for mortar but also has a certain strength, including the bearing capacity and binding force of the base surface, these are the basic conditions for the floor materials can normal application, self-leveling these implementation, the performance of hydroxypropyl methyl cellulose ether are welcome to join us, it can act as thickening reinforced adhesion, It also has the characteristics of high water retention and prolonged construction time.
The higher the viscosity of hydroxypropyl methyl cellulose is, the better the viscosity of the modified cement-based material is, but if the viscosity is too large, it will affect the fluidity and operability of the material. In addition, the thickening effect of hydroxypropyl methyl cellulose can also increase the water requirement of cement-based materials, thereby increasing the output of mortar. Self-leveling mortar and self-compacting concrete, which require high fluidity, require low viscosity of hydroxypropyl methyl cellulose. Low viscosity cellulose ether can play a good suspension effect, can prevent the slurry settlement, also has the function of exudation, also can ensure that will not affect the self-leveling mortar material flow effect, easy construction, but also has high water retention characteristics, can make the surface of the flow after the effect is much better, reduce the shrinkage of mortar, avoid peeling crack, and so on and so forth.
Hydroxypropyl methyl cellulose is widely used in all kinds of building materials. When applied in self-leveling mortar, it has the following characteristics:
1, high water retention performance, can prolong the operation time of self-leveling mortar, improve the durability of mortar, increase its bond strength, excellent wet bonding performance, can reduce the ground ash.
2, the compatibility is strong, suitable for all kinds of building materials, self-leveling mortar, reduce the sinking time, reduce the drying shrinkage rate, to avoid the wall and ground cracking drum and other problems.
3, prevent bleeding, it can play a better role in suspension, prevent slurry deposition and better performance of bleeding.
4, keep good flow property, low viscosity of hydroxypropyl methyl cellulose will not affect the flow of slurry, easy construction, good water retention performance, can produce good surface after self leveling effect, avoid cracking of the drum, cellulose ether and stable bond performance, fully guarantee the good liquidity, as well as the ability of self-leveling, Controlling water retention rate can make it solidify more quickly and reduce shrinkage and cracking.