Construction Chemical Hydroxypropyl Methyl Cellulose (HPMC)
Building Construction Hydroxypropyl Methyl Cellulose (HPMC)
Brief introduction:
Hydroxypropyl Methyl Cellulose (HPMC) helps building materials apply more easily and perform better. They provide water retention and cohesiveness to mixtures. With special modification, it can be used to control thickening, water demand, workability, sag resistance, strength and other important properties of the final product.
It is widely used as thickener, adhesive, water preserving agent, film-foaming agent in building materials, industrial coatings, synthetic resin, ceramic industry, medicine, food, textile, agricultural, cosmetic and other industries.
Physical and chemical index:
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Item
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Specification
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CAS NO.
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9004-65-3
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Appearance
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white or light yellow powder
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Moisture Content
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≤5.0%
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PH
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4.0-8.0
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Particle Size
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min. 98% pass through 100 mesh
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Viscosity
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100cps-200000cps, 2% solution
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Application in Building:
External wall insulation system (EIFS)
>Bond strength: HPMC can provide the greatest degree of high adhesive bond strength of mortar.
>Performance: The mortar added HPMC has the right consistency, non-sagging. When using, the mortar is easy to work continuously, uninterrupted.
>Water retention: HPMC can wet the wall insulation easily, easy to paste, and also make other additional materials reach the best affects.
>Absorbent: HPMC can minimize the air-entraining volume, lower water absorption of mortar.
Interior and exterior wall interface agent
>Easy to mix, without of agglomeration: HPMC can significantly reduce the friction in the dry powder during the process of mixing with water, which makes it easy to mix and save the blending time.
>Water retention: HPMC can significantly reduce the moisture absorption by the wall. Good water retention can ensure the cement compound with a longer time, also can ensure that workers are able to carry out many times of scraping for the putty on the wall.
>Good working performance stability: even in high temperature environment, HPMC can still maintain good water retention. it is suitable for construction in the summer or hot areas.
>Increased water demand: HPMC can significantly improve the water demand of the putty materials. On the one hand, it improves the operational time after putty put on the wall, on the other hand, it can increase the coating are of the putty, which can make the formula more economical.
Tile adhesive
>Water retention: HPMC can reduce the moisture absorbed by the substrate and the tile, retain the moisture in the adhesives as much as possible, making mortar still have adhesion after coating for a long time. Significantly extend open time and makes bigger coating area for the worker each time, and improve the efficiency.
>Improve bond strength, improve anti-slip performance: HPMC ensure non sagging of the tiles during working, especially for heavy tile, marble and other stone materials.
>Work performance: The lubricity of HPMC can increase the workability of the mortar significantly, which makes the mortar easy to coating and improve efficiency.
>Improve mortar wetting property: HPMC give mortar consistency, enhance the wetting ability of mortar and substrate, increase the binding strength of wet mortar, especially for the recipe with high water cement ration;
Crack Filler
>Workability: provide the right viscosity, plasticity, and easy to work;
>Water retention: can make the slurry fully hydrated, extending the working time and avoid cracking.
>Anti-hanging: HPMC can make a strong adhesion on the surface for the slurry and not sag;
Self-leveling mortar
>Prevent bleeding: HPMC can play a very good role to prevent the slurry sedimentation, bleeding.
>Maintain liquidity, and improve retention: low viscosity HPMC will not affect the slurry flow effect and easy to work. While possesses certain water retention, makes the good surface effect after self-levelling and avoid cracks.
Gypsum-based plaster
>Water retention: HPMC can retain moisture in the mortar, thus make gypsum completely solid. The higher the viscosity is, the stronger the water-retention capacity, vice versa..
>Sag resistance: allow the worker make the thick coating without causing ripple building.
>Mortar yield: For fixed weight of dry mortar, the exist of HPMC can provide more wet mortar.
