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Gypsum Additives Manufacturer

Cellulose ether is one of the most critical additives in gypsum material. WOTAI cellulose ethers can easily infiltrate gypsum products without causing clusters or porosity. The breathing performance of plastered gypsum is not affected. The proper viscosity of cellulose ether ensures superior bonding ability. It enables easy spreadability on base surfaces while eliminating tool sticking. It has significantly improved the construction performance of gypsum products.

 

WOTAI specializes in the production of cellulose ethers that come in multiple viscosities. The essential gypsum additive provides bonding strength, water retention, and sag resistance.

4 Major Benefits of Gypsum Additives

Gypsum additives such as cellulose ether and RDP powder has many benefits.

 

-Superior construction quality. The plastering process becomes effortless and yields a smooth finish. It can be easily moulded and exhibits high plasticity.

-Exceptional anti-sagging performance. When applied in thick layers, the plaster does not sag during single construction, even after multiple scrapings. It demonstrates excellent plasticity.

-Outstanding water retention capacity. The cellulose ether prolongs the operational time of the gypsum base. It was improving its weather resistance and bonding strength. It also exhibits exceptional wet bonding performance and reduces the occurrence of ground ash.

-Strong compatibility. It is suitable for various types of gypsum bases, reducing the ageing time of gypsum and minimizing drying shrinkage. This compatibility prevents issues like hollowing and cracking on the wall.

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hand-applied-plaster
Gypsum Additives

Hand Applied & Machine Applied Plaster

There are usually two types of gypsum plaster: hand-applied and machine-applied.

 

Hand-applied plasters are convenient for smaller areas and renovation projects. They can be manually mixed or prepared using a machine and applied using a trowel. On the other hand, machine spray plasters offer the advantage of continuous mixing and application using a plastering machine. Typically, they have a thickness of approximately 10mm.

 

WOTAI is a direct manufacturer of gypsum additives. We offer a range of cellulose ethers with different viscosities and VAE RDP for professional use.

 

Gypsum Additives

Trowelling Compound

Gypsum-based trowelling compounds typically achieve a level surface for walls or ceilings. The compounds offer an ideal solution by effectively levelling uneven surfaces. They are applied in thin layers, resulting in a smooth, aesthetically pleasing finish that can be easily painted.

 

We recommend selecting WOTAI HPMC WO400-20000 or our premium collection, WE MHEC 400-20000, for optimal results. These products are known for their superior performance. Whether you need to smooth plasterboards, concrete walls, or ceilings, our gypsum additives always deliver outstanding results.

trowelling-compound
gypsum-additive-rdp
Gypsum Additives

Joint Filling & Adhesives

Gypsum-based jointing and filling compounds are extensively employed to fill the gaps between gypsum boards. The setting times of these compounds vary depending on their intended purpose and the location where they are used.

 

When installing gypsum plasterboards on existing masonry, it is common practice to utilize mounting binders. These binders offer a strong and dependable solution for securely fixing the plasterboards, particularly during home renovations. They play a vital role in upholding the structural integrity of the walls, especially when dealing with older houses.

 

We recommend you choose WOTAI WO20000 or WE20000 for joint filling or adhesives.

You May Also Need...

How Cellulose Additives Enhance Lightweight Plaster Gypsum?

What happens when gypsum is mixed with water?

When gypsum is mixed with water, a chemical reaction called hydration occurs. This reaction causes the gypsum to crystallize, transforming it from a powder into a solid material. As water is added to gypsum, it dissolves and forms a gypsum paste, which eventually hardens and sets into a solid mass. This process is essential in various applications, such as gypsum plastering and gypsum board production.

What is the ratio of gypsum to water when mixing?

When mixing, the ratio of gypsum to water depends on the specific application and desired consistency. As a general guideline, a commonly used ratio is typically around two parts gypsum to 1 part water by weight. However, referring to the specific instructions provided by the manufacturer or industry standards for the appropriate mixing ratio based on the intended use is essential.

How can gypsum additives improve the properties of gypsum?

Gypsum additives are specifically formulated to enhance the properties of gypsum-based materials. Including cellulose ethers (HPMC, HEMC, HEC) as additives can improve gypsum plaster adhesion and sag resistance.

 

RDP (Redispersible Polymer Powder) can enhance the strength, flexibility, and water resistance of gypsum-based products such as gypsum boards. These additives improve gypsum applications’ performance, durability, and overall quality.

Which additives are commonly used with gypsum?

Several additives are widely used in conjunction with gypsum to optimize its performance. For example:

– Cellulose ethers (HPMC, HEMC, HEC) are commonly used with gypsum to optimize performance. These cellulose ethers act as rheology modifiers. They can improve gypsum-based materials’ workability, adhesion, and sag resistance.

– Antifoaming agents can prevent foam formation during the production of gypsum-based products.

– Calcium formate can enhance the setting time and workability of gypsum mixtures.

– Concrete fibres (PVA, PPF, PAN, PET) can be added to gypsum to improve its structural integrity and crack resistance.

Can I use RDP (Redispersible Polymer Powder) for manufacturing gypsum prefabricated parts?

For gypsum prefabricated parts, if you require a thickening effect, we recommend adding cellulose ether for water retention and thickening. Additionally, the incorporation of water repellents may be necessary. If you have further questions, please don’t hesitate to consult us for professional formulation advice.

What laboratory parameters should be tested for gypsum mortar, lightweight plaster gypsum, and specialty dry powder mortar?
The essential laboratory indicators to test include flexural strength, adhesive strength, water retention, and rheological properties (high shear, medium shear, low shear curves), among others. However, the final selection should be based on the specific application requirements.
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