Starch ether

Many professionals involved in the production and on-site application of dry-mix mortar frequently encounter challenging issues such as mortar sagging on walls, setting too quickly to allow for proper application, cracking due to moisture loss, and hollow spots or tile detachment—problems that are difficult to resolve even after repeated adjustments to the formulation. Starch ether, an eco-friendly functional additive made from modified starch, specifically addresses the shortcomings of standard mortar formulations. With its excellent thickening, anti-slip, water-retention, and retarding properties, it has become an indispensable core additive in products such as masonry mortar, plaster, and tile adhesives. Shandong Jiurunfa Chemical Technology Co., Ltd. specializes in the R&D and production of starch ether, developing specialized starch ether products with stable performance to meet the formulation needs of various dry-mix building materials.

Starch ether is produced through the chemical modification of natural starch. It appears as a fine white powder, disperses rapidly, and does not clump or form lumps when added to powdered mixtures. It offers two outstanding core performance advantages. The first is its extremely strong anti-slip effect: adding even a small amount of starch ether can significantly enhance the thixotropy of mortar, preventing sagging and runoff during thick-layer plastering or application on vertical walls. This allows workers to apply the mortar more smoothly, greatly improving construction efficiency; Second is its long-lasting water-retention capability. It locks in free water within the mortar, slowing down excessive evaporation and preventing dry shrinkage, cracking, powdering, and surface spalling caused by water loss. This ensures thorough cement hydration, enhances bond strength, and reduces the likelihood of future repairs. Furthermore, starch ether exhibits excellent compatibility and can be blended with cellulose ethers and various admixtures. It delivers noticeable benefits even at low dosage levels without unduly affecting the mortar’s open time or strength development.

When added in appropriate amounts to tile adhesive formulations, starch ether prevents slippage and shifting during the installation of large-format tiles and heavy stone, resulting in a stronger bond and effectively reducing the rate of complaints regarding hollow spots and tile detachment. When added to interior and exterior wall plastering mortars, it extends the workable time, prevents rapid setting even during high-temperature and windy conditions, and makes leveling and finishing easier. In self-leveling mortars, grouts, and gypsum-based putty products, starch ether optimizes the system’s consistency, improves the fineness of the finished product, and prevents surface defects such as pinholes and pitting. Beyond the building materials sector, modified starch ether can also be used for thickening in personal care products and stabilizing food systems, with a wide range of applications.

Jiurunfa Chemical Technology Co., Ltd. strictly controls the entire production process of starch ether, conducting rigorous inspections at every stage—from raw material modification and reaction control to finished product screening and testing. By precisely controlling viscosity, dispersibility, and anti-slip properties, the company ensures that the finished product maintains stable and uniform purity, with minimal performance variation between batches. Customers can put the product into production immediately without significantly altering their existing formulations, thereby controlling additive costs while ensuring consistent quality of the end-use mortar.

Jiurunfa continues to optimize its starch ether production process and can provide tailored recommendations and formulation solutions based on the specific types of mortar its customers use. We welcome you to purchase our products.

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