Description
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Product name
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Hydroxy propyl methyl cellulose (HPMC)
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Physical Form
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White to off-white powder
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Viscosity (2% mPa.S)
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50000-200000
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Hydroxypropoxyl Conent %
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4.0-12.0
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Methoxyl content(wt%)
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19.0-30.0
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pH Value 2%
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5.0-8.0
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Gel temperature ℃
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70-90
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NaCl（%）
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≤0.2
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Moisture Content, %
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5% max
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Ash, %
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1.5% max
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Function
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Water Retention, High Adhesive,Anti-slip,Excellent Workability
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Package
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25kg/bag,OEM&ODM are accepted
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HPMC increased with methoxy content reduce, the gel point water solubility and surface activity also declind, depends on customer's situation.
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Introduction: Hydroxypropyl methyl cellulose (HPMC) is a versatile polymer derived from cellulose, a natural compound found in plants. HPMC has gained significant popularity in various industries due to its unique properties. In the realm of building materials, HPMC is widely used and plays a crucial role in enhancing product performance and improving construction processes.
What is HPMC? HPMC is cellulose ether, created by treating cellulose with propylene oxide and methyl chloride. This modification process results in a compound with improved water retention, thickening, and adhesion properties. HPMC is available in powder form and is easily soluble in water, forming a transparent and viscous gel.
Fields of HPMC Use in Building Materials:
Cement-Based Mortars: HPMC is commonly used as an additive in cement-based mortars, such as tile adhesives, renders, and plasters. It enhances workability, adhesion, and cohesion of the mortar, allowing for better handling, troweling, and application.
Exterior Insulation and Finishing Systems (EIFS): HPMC is incorporated into EIFS products to improve their workability, adhesion, and durability. It helps to control the curing time and consistency of the coating, leading to better application and performance on exterior walls.
Self-Leveling Compounds: HPMC is added to self-leveling compounds to improve their flow properties, self-leveling behavior, and prevent segregation. It enables the compound to spread evenly, resulting in a smooth and level surface.
Gypsum-Based Products: HPMC is used in gypsum-based products like joint compounds, gypsum plasters, and gypsum boards. It acts as a binder, improving the workability, water retention, and sag resistance of the mixture.
Role of HPMC in Building Materials:
Water Retention: HPMC has excellent water retention properties, allowing cement-based mortars and other materials to retain water for a longer time. This improves hydration, enhances the curing process, and reduces shrinkage and cracking, resulting in improved strength and durability.
Thickening and Stabilization: HPMC acts as a thickener, preventing sagging and providing stability to the applied materials. It improves the consistency and workability of the mixture, enabling better control during application.
Adhesion and Cohesion: HPMC enhances the adhesion between building materials and substrates, promoting better bonding and reducing the risk of delamination. It improves the cohesion within the materials, enhancing their overall strength and resistance to deformation.
Workability and Ease of Application: By modifying the rheological properties of building materials, HPMC improves their workability, making them easier to mix, apply, and shape. It also reduces splattering during application and enhances the overall user experience.
HPMC, cellulose ether, is extensively used in the production of building materials. Its water retention, thickening, adhesion, and workability-enhancing properties make it an essential additive. China is one of the leading manufacturers of HPMC, supplying the construction industry with high-quality products to improve the performance and longevity of various building materials.
