Application of HPMC in Gypsum

Application of HPMC in Gypsum

Hydroxypropyl Methylcellulose (HPMC) is a commonly used additive in gypsum-based building materials such as gypsum plasters, gypsum boards, and gypsum-based mortars. HPMC is used as a thickener, water retention agent, and as a binder in these applications.

When HPMC is added to gypsum, it acts as a thickener and improves the consistency and workability of the material. It also improves the water retention of the mix, which helps to prevent premature drying and shrinkage. This property is especially important in plastering applications where the plaster needs to remain workable for an extended period.

HPMC also acts as a binder and improves the adhesion of the gypsum to the surface it is applied to. This helps to reduce cracking and improves the durability of the finished product.

In summary, HPMC is used in gypsum-based building materials to improve the workability, water retention, and adhesion of the material.

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