Focus on Cellulose ethers

HPMC used in construction

HPMC Hydroxypropyl methyl cellulose, also known as hydroxypropyl methyl cellulose ether (HPMC), cellulose hydroxypropyl methyl ether, is the selection of highly pure cotton cellulose as raw material, under alkaline conditions by special etherification and preparation.

Hydroxypropyl methyl cellulose HPMC used in construction, cellulose ether added amount is very low, but can significantly improve the performance of wet mortar, mortar construction performance is a major additive. Now, hydroxypropyl methyl cellulose used in dry mortar cellulose ether is mainly hydroxypropyl methyl cellulose ether (HPMC). Hydroxypropyl methyl cellulose in construction dry mortar HPMC mainly plays a role in water retention, thickening, improving construction performance.

1, construction mortar plastering mortar

High water retention can make cement fully hydrated, significantly increase bond strength, and can appropriately improve tensile strength and shear strength, greatly improve the construction effect, improve work efficiency.

2, water resistance putty

In the putty HPMC hydroxypropyl methyl cellulose ether mainly plays the role of water retention, bonding and lubrication, to avoid the phenomenon of cracks and dehydration caused by too fast water loss, and enhance the adhesion of the putty, reduce the phenomenon of flow hanging in the construction, so that the construction is relatively smooth.

3, paint gypsum series

In gypsum series of products HPMC hydroxypropyl methyl cellulose ether mainly play water retention, increase lubrication and other effects, at the same time has a certain delay effect, to solve the construction process drum cracking, initial strength is not up to the problem, can prolong the working time.

4, interface agent

Mainly used as thickener, it can improve tensile strength and shear strength, improve surface coating, enhance adhesion and bonding strength.

5, external insulation mortar

HPMC Hydroxypropyl methyl cellulose, cellulose ether in the material focus on bonding, increase strength, make it easier for mortar coating, improve work efficiency, at the same time is more vertical flow resistance, high water retention performance can prolong the working time of mortar, improve the shrinkage and thermal fatigue resistance, improve the surface quality, improve the bonding strength.

6, ceramic tile binder

High water retention can not pre-soak or wet ceramic tile and base, significantly improve its bond strength, slurry can be long construction cycle, delicate, uniform, convenient construction, and has good resistance to moisture.

7, seam filling agent, jointing agent

The addition of hydroxypropyl methyl cellulose HPMC cellulose ether makes it have good edge adhesion, low shrinkage and high wear resistance, protect the base material from mechanical damage, to avoid the impact of infiltration to the whole building.

8, self leveling material

Hydroxypropyl methyl cellulose cellulose ether stable bond to ensure good liquidity and self-leveling ability, control water retention rate so that it can quickly solidify, reduce cracking and contraction.

9. Latex paint

Hydroxypropyl methyl cellulose in the coating industry cellulose ether as film-former, thickening agent, emulsifier and stabilizer used, make it has good abrasion resistance, coating, adhesive, improving the qualitative of the PH value of the surface tension, and organic solvent mixture effect is better also, Gao Baoshui performance make it has good brushing and flow property.

10. Honeycomb ceramics

In the new honeycomb ceramics, the billet is given lubricity, water retention and strength enhancement.

Excellent hydroxypropyl methyl cellulose series products can effectively solve the problem of water retention under high temperature. In the high temperature season, especially in hot and dry areas and thin layer construction on the sunny side, high quality HPMC is needed to improve the water retention of slurry. High quality HPMC, uniformity is very good, its methoxy and hydroxypropyl groups along the cellulose molecular chain uniform distribution, can improve hydroxyl and ether bond on the oxygen atoms and water association hydrogen bond ability, make free water into combined water, so as to effectively control the evaporation of water caused by high temperature weather, to achieve high water retention.

High quality of hydroxypropyl methyl cellulose can uniformly and effectively disperse in cement mortar and plaster products, and package all solid particles, and form a layer of wetting film, the moisture in the base for a long time gradually released, and inorganic cementitious material hydration reaction, so as to ensure the bond strength and compressive strength of materials. Therefore, in high temperature summer construction, in order to achieve the effect of water conservation, according to the formula to add high quality HPMC products, otherwise, there will be drying too fast caused by insufficient hydration, strength reduction, cracking, hollow drum and falling off and other quality problems, but also increase the difficulty of workers construction. As the temperature decreases, the amount of HPMC can be gradually reduced, and the same water retention effect can be achieved.

Post time: Jan-10-2022
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