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Recommended GradeSL HP100WPSL HP70WPAppearance

White or off-white powder

White or off-white powderWater Retention Rate(%)

97%min.

97%min.Moisture content

&#;5 &#;

&#;5 &#;pH value

6-7

6-7Viscosity

mPa.s (NDJ-1, 2% solution, 20&#;)

mPa.s (NDJ-1, 2% solution, 20&#;)

Gypsum plaster is a popular construction material known for its excellent properties, such as fire resistance and sound insulation. To further improve its workability, adhesion, and performance, Hydroxypropyl Methyl Cellulose (HPMC) is often used as an additive. In this article, we will explore the significance of HPMC for gypsum plaster and its various advantages in the construction industry.

The Role Of HPMC In Gypsum Plaster:

Improved Workability: 

HPMC enhances the workability and ease of application of gypsum plaster, allowing it to spread more smoothly and efficiently on a variety of surfaces. Its water-retaining properties prevent rapid drying, allowing contractors to achieve consistent results without compromising quality.

Enhanced Adhesion: 

HPMC helps improve the adhesion of gypsum plaster to dissimilar substrates, promoting a strong bond and reducing the risk of delamination or cracking over time. This produces a long-lasting, durable plaster finish.

Superior Crack Resistance: 

HPMC-treated plaster is more resistant to cracking, reducing the likelihood of cracks forming due to shrinkage or movement. This is particularly beneficial in areas prone to temperature fluctuations or structural changes.

OPTIMAL OPEN TIME: 

HPMC extends the open time of the plaster, giving craftsmen more time to perfect their finishing touches. This increase in machinability means improved aesthetics and a more refined final appearance.

Controlled Water Retention: 

The controlled water absorption and release capabilities of HPMC ensure proper curing of the plaster, allowing for even drying and minimizing surface imperfections. This controlled hydration helps create an even, flawless finish.

Description of HPMC for gypsum plasters:

Water Retention: 

HPMC serves as a water retention agent in gypsum plasters, helping to maintain the optimal moisture level within the plaster mix. This extended water retention ensures that the plaster remains workable for a longer period, allowing for easier application and smoother finishing.

Improved Workability: 

By enhancing water retention, HPMC enhances the workability of gypsum plasters, making them easier to mix, apply, and spread onto surfaces. The improved workability results in better coverage, reduced material waste, and enhanced overall productivity during plastering operations.

Reduced Sagging and Slumping: 

The addition of HPMC helps prevent sagging and slumping of gypsum plasters, particularly on vertical surfaces such as walls and ceilings. This improved sag resistance ensures that the plaster adheres evenly to the substrate without dripping or sliding, resulting in a uniform and aesthetically pleasing finish.

Enhanced Adhesion: 

HPMC improves the adhesion of gypsum plasters to various substrates, including masonry, concrete, wood, and drywall. This enhanced adhesion ensures a strong bond between the plaster and the substrate, minimizing the risk of delamination or detachment over time.

Crack Resistance: 

HPMC contributes to the crack resistance of gypsum plasters by imparting flexibility to the hardened material. This increased flexibility allows the plaster to accommodate minor movements or substrate expansion and contraction without cracking or fracturing, ensuring long-term durability and structural integrity.

Surface Smoothness: 

Gypsum plasters formulated with HPMC exhibit improved surface smoothness and finish, resulting in a uniform and seamless appearance. The addition of HPMC helps minimize surface imperfections such as ridges, bumps, and air voids, allowing for easier painting or decoration after plastering.

Compatibility: 

HPMC is compatible with other additives commonly used in gypsum plaster formulations, including setting accelerators, retarders, and air-entraining agents. This compatibility allows formulators to tailor the properties of gypsum plasters to meet specific performance requirements while maintaining consistency and stability.

In summary, Hydroxypropyl methylcellulose (HPMC) plays a crucial role in enhancing the performance and workability of gypsum plasters, providing improved water retention, workability, sag resistance, adhesion, crack resistance, surface smoothness, and compatibility with other additives. Its use contributes to the production of high-quality gypsum plaster formulations suitable for a wide range of interior and exterior plastering applications.

Please contact Sleo to solve your customization needs and provide you with high-quality products.

Product Description

Wall Putty Hydroxyporpyl Methyl Cellulose(HPMC)

HPMC for wall putty enhances key properties like water retention, crack resistance, and workability, ensuring a smooth and durable finish. With high water retention, dispersion, and easy dissolution, HPMC polymer is ideal for dry mortar building, offering exceptional performance for both interior and exterior wall putty applications.

 

Hydroxypropyl Methyl Cellulose HPMC

COMMON NAME HYDROXYPROPYL METHYL CELLULOSE  ABBREVIATION HPMC CAS NO. -65-3 STANDARDS COMPLIANT ENTERPRISE STANDARD CHEMICAL FORMULA  R=CH2CH(CH3)OH

 

PHYSICAL AND CHEMICAL PROPERTIES:

* Particle size: 98.5% passes through 100 mesh; 100% passes through 80 mesh.

* Charring temperature: 280-300&#;.

* Bulk density: 0.25-0.70 g/cm3 (Usually around 0.5 g/cm3 )

* Real specific gravity: 1.26-1.31.

* Browning temperature: 190-200&#;.

* Surface tension: (2% water solution) 42-56dyn.cm.

* Properties: Dissolved in water and some organic solvent such as ethanol. propyl alcohol. ethylene chloride, the water solution is of surface activity. HPMC powder is a nonionic surface active agent. Gelation temperature is different for different grades. For example, among 60RT Hydroxypropyl Methylcellulose, 60 is gelation temperature, Namely, 2% water solution will form gelation at 60%.

 

HaoShuo Cellulose Ether provides putty with the following properties:

- excellent water retention;

- easy to smooth;

- long opening hours;

- Wide range of environmental adaptations.

 

henggu jianxin are exported all over the world and different industries with quality first. Our belief is to provide our customers with more and better high value-added products. Let's create a better future together.

Gypsum Plaster Hydroxyporpyl Methyl Cellulose(HPMC)

Elevate your plastering projects with Haoshuo's Gypsum Plaster HPMC. Infused with Hydroxypropyl Methylcellulose, this advanced solution enhances workability, water retention, and tensile strength. The HPMC cellulose's high stability ensures improved resistance, prevents cracking, and enhances overall appearance in gypsum plaster applications.

 

HaoShuo cellulose ether provides key properties for gypsum-based mortars:

- high water retention;

- Fast dissolving speed;

- good adhesion;

- easy pumping and good sag resistance;

- Easy to apply and press finish.

 

As a professional Wall Putty HPMC supplier, HaoShuo provides different grades of high quality HPMC:

Construction Grade HPMC

Daily Chemical Grade HPMC

Gypsum Special Grade HPMC

 

Technical Support

 

HaoShuo have a strong technical organization with the capabilities to maximize the benefits of cellulose ethers in your application. we provide technical assistance to our customers in products analysis, formulation optimization etc.

 

Equipped with technical expertise and background, HaoShuo technical support staff are ready to assist customers with fist-class service, they have many decades of experience in the area of formulation research and developent, products test etc and can help customers to develope and optimising the appropriate products.

 

With ISO- international quality system certification, factory directly sell and competitive price, our hydroxy propyl methyl cellulose has been exported around the world like Pakistan, India, South Korea, Bangladesh, Indonesia, Singapore, Taiwan, Belgium, Thailand etc. Sincerely hope to cooperate with you!

 

Wall putty/Plaster application guide

&#; Sag-resistance: HPMC can provide a good viscosity of the wet mortar, prevent wall putty sagging.

&#; The good filming property on the surface of wall putty, could reduce the water absorption of base wall. Reduce the risk of cracking.

&#; Good water retention will make sure all the putty powder additives and gypsum additive reach the best performance.

&#; Good workability to increase the efficiency.

 

Packaging and Storage

Packaging and storage: 25 kg/bag

Note: The product is packaged in polypropylene woven bags, each with a net weight of 25kg. When storing, place in a ventilated and dry place indoors, pay attention to moisture. Pay attention to rain and sun protection during transportation.

Quantity/20GP: 12 tons with pallets, 14 tons without pallets.

Quantity/40HQ: 24 tons with pallets, 28 tons without pallets.

 

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Wall putty in construction system

The coating system is generally divided into three layers: wall, putty and paint. When the ambient temperature and humidity change, due to the different deformation coefficients of the three-layer materials, the deformation is consistent, which inevitably generates stress in the decoration system. The putty resists cracking of the substrate and peeling of the film by virtue of its flexibility to relieve stress. At the same time putty provides a leveling, smooth or textured substrate for latex paints. Due to the optimization of the putty formula, the amount of latex paint is reduced and the service life of the coating film is prolonged.

 

Gypsum VS Cement

Gypsum plays a very important role in the building materials industry. Compared to cement, gypsum has unique characteristics:

- Fast curing speed and adjustable curing time;

- There is a little swelling after hydration, and the cementitious material has no hollowing and cracking phenomenon;

- After curing, a large number of porous structures are formed in the material, which has the functions of ventilation, sound absorption and sound insulation. It can adjust the humidity of living and working places and create a comfortable climate, so gypsum plays an important role in interior decoration;

- Rich in natural gypsum resources, unit energy consumption is lower than cement. Gypsum can be recycled;

- Power plant desulfurization produces a large amount of gypsum, providing a rich source of gypsum.

 

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