The construction industry has experienced massive growth in incorporating new materials to enhance the output and overall performance of construction products. Among such trendy innovations is the gypsum plaster.

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However, one of the ingredients that serve as the gypsum plaster’s bedrock, particularly in stability and thickening property, is cellulose.

In this article, we’ll briefly examine the roles of Hydroxypropyl Methyl Cellulose in the production of gypsum plaster.

Before we dive in, let’s quickly integrate you with gypsum plaster and the characteristics of HPMC. 

What is Gypsum Plasters?

Widely known as hydrous calcium sulfate among chemists, gypsum itself is a water-soluble naturally occurring mineral. It exists freely in nature as crystals and can be located among layers of limestone and shale.

On the other hand, gypsum plaster is produced by heating gypsum at a very minimal temperature to achieve evaporation. The dehydrated gypsum known as Plaster of Paris (POP) is pulverized and heated at about 150℃. The dry POP powder hardens when you add water to form gypsum plaster. The concentration can be applied over concrete, brick, or block to further strengthen it. 

Characteristics of Cellulose（HPMC）

HPMC cellulose exists as white, non-ionic cellulose ether. In its powdery form, it’s odorless and tasteless. It’s soluble in water and other organic content such as ethanol, propanol, and dichloroethane. However, it is insoluble in acetone, diethyl ether, and anhydrous alcohol.

When in an aqueous solution, HPMC offers high stability, transparency, and surface activity. Heating makes the Hydroxypropyl Methyl Cellulose precipitate for gels due to its thermal gelation properties.

How does cellulose work in gypsum products? 

1. High water retention

Cellulose has a high water-holding capacity. This attribute makes it useful to improve resistance, prevent cracking, and enhance gypsum plaster’s overall appearance. It also boosts surface uniformity, lubrication, and adhesion when applied to gypsum plaster in putty and other construction works.

2. Thickening property

HPMC is the right material for you if you want to increase the tensile strength of gypsum plaster and other construction material. It acts as an interface agent. That is, it improves gypsum plaster flexural strength and increases bonding strength.

3. Highly stable

HPMC's outstanding film-forming properties and high resistance to degrading enzymes help stabilize gypsum plaster pH and enhance its salt discharge performance.

Others include dispersibility, constructability, and adhesive strength. Also, HPMC has effects on the setting time, pumpability, and workability of gypsum plaster composition. Overall, it enhances construction efficiency and guides against weathering after exposure of building surfaces to water-soluble salts.

All these make HPMC an integral part of the gypsum plaster every construction worker must-have.

To order your cellulose, Michem Chemicals is your one-stop shop for quality HPMC and other construction products.with us today to book a free session with our experts for your construction material needs.

Contact with us and Get your free samples now!

Shandong Michem Chemical Co.,Ltd.

Office: No.19,Lishan North Road,Jinan Shandong,China

Tel: 0086-531-88965350  Fax: 0086-531-88967332

Mobile/WeChat/WhatsApp: +86（0）17862186910

Email: carrie@michemicals.com

HPMC for gypsum plaster

If you are looking for more details, kindly visit SLEO Chemical.

Gypsum is a popular building material known for its excellent properties such as fire resistance and sound insulation. To further enhance its workability, adhesion and performance, experience the ultimate transformation in your gypsum plaster projects with the innovative power of hydroxypropylmethylcellulose (HPMC) additives.

Effect of HPMC on Gypsum

（1）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.

（2）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.

（3）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.

（4）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.

（5）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.

Applications of HPMC-Infused Gypsum Plaster:

（1）Interior Masterpieces: Elevate interior spaces with HPMC-treated gypsum plaster that boasts unparalleled smoothness, crack resistance, and durability. From residential havens to commercial marvels, your creations will shine with sophistication.

（2）Architectural Marvels: Add a touch of grandeur to architectural designs with HPMC-enhanced plaster. Create captivating decorative elements, intricate moldings, and ornate motifs that capture the essence of timeless beauty.

（3）Ceiling Statements: Craft stunning ceilings that leave a lasting impression. HPMC ensures your gypsum plaster adheres flawlessly to overhead surfaces, minimizing sagging and ensuring a stunning visual impact.

（4）Restoration Excellence: Restore historical treasures to their former glory with HPMC-modified gypsum plaster. Seamlessly integrate new plaster with existing surfaces, achieving seamless results that honor the past while embracing the future.

Are you interested in learning more about Hydroxypropyl Methylcellulose (HPMC) For Gypsum Plasters? Contact us today to secure an expert consultation!