Exploring the Role of HPMC A Chemical Raw Material in Formulations and Applications
The higher the clarity of hydroxypropyl methyl cellulose, the better the water solubility. The factors that affect the water solubility of wet cement mortar include the viscosity of cellulose ether, the addition amount, particle size and application temperature. The higher the viscosity of cellulose ether, the better the water solubility. Viscosity is the key parameter of HPMC. Compared with the same commodity, the viscosity measured in different ways is huge, tiny or even twice the distance. Therefore, in terms of viscosity, it is necessary to carry out in the same test standard. Including temperature, motor rotor, etc. Generally speaking, the higher the viscosity, the better the actual effect.
Hydroxypropyl methyl cellulose, known as “industrial monosodium glutamate”, is widely used. Hydroxypropyl methyl cellulose itself also has different types, which are divided into cold water instant type and hot-melt type. Cold water instant HPMC is widely used, and can be used in interior wall putty powder, cement mortar, liquid building paint, daily chemicals, etc. Heat soluble HPMC is generally used for dry powder products, which are directly mixed with dry powder, such as putty powder and mortar. Cold water instant products are inferior to hot-melt products in water retention and product stability, so different types should be selected according to different uses.
However, the higher the viscosity, the higher the HPMC content, and the lower the solubility of HPMC. This has a negative impact on the compressive strength and construction characteristics of cement mortar. The higher the viscosity, the more obvious the thickening effect of cement mortar. However, different from the ground, the higher the viscosity is, the higher the viscosity of cement mortar is. In addition to application, it will also show the information of self-adhesive knife and its high sensitivity to plates. But it is useless to improve the compressive strength of wet cement mortar itself.
MHEC serves as a thickening agent and rheology modifier in water-based paints and coatings, improving their application properties and film formation.
Adhesives and Sealants:
In adhesives and sealants, MHEC enhances bonding strength, tackiness, and moisture resistance, contributing to their overall performance.
MHEC powder is harnessed for personal care and cosmetic products due to its outstanding thickening, stabilizing, and moisturizing attributes. It features prominently in creams, lotions, shampoos, toothpaste, and gels, functioning as a rheology modifier. This enhances product consistency and ensures the even dispersion of active ingredients.
Another important benefit of MHEC is its ability to enhance the spreadability of personal care products. It helps to evenly distribute the product over the skin or hair, ensuring that all areas are covered. This is particularly important in products such as sunscreens and body lotions, where even coverage is essential for effective protection.
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.