Improving External Wall Insulation Mortar Performance with Hydroxypropyl Methylcellulose

Kemox Hydroxypropyl Methylcellulose is a synthetic polymer derived from cellulose, a natural polymer found in plants. HPMC is a water-soluble polymer that is widely used in the construction industry as a binder, thickener, and water retention agent. It is made by treating cellulose with propylene oxide and methyl chloride to produce a highly branched polymer.

In EWI mortar, HPMC is added to the mixture of cement, sand, and other additives. It acts as a thickener and water retention agent, allowing the mortar to set and harden properly. HPMC also improves the workability of the mortar, making it easier to mix and apply. Additionally, HPMC improves the adhesion of the mortar to the insulation boards, ensuring a strong and durable bond.

HPMC enhances the performance of EWI mortar in several ways. Firstly, it improves the workability of the mortar, allowing it to be mixed and applied more easily, even in harsh weather conditions. This results in a more consistent and even finish. Secondly, HPMC increases the adhesion of the mortar to the insulation boards, creating a stronger and more durable bond that can withstand extreme weather conditions. Finally, HPMC reduces the shrinkage of the mortar, which minimizes the risk of cracking and improves the overall longevity of the EWI system.

When selecting an HPMC product for EWI mortar, it is important to consider the specific requirements of the project. Different HPMC products have different properties, such as viscosity, water retention, and setting time, which can affect the performance of the mortar. It is essential to choose a high-quality HPMC product that is specifically designed for use in EWI systems and that meets the necessary performance standards.

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