1. Building mortar and plastering mortar

High water-retention capacity enables complete hydration of cement, significantly enhancing bond strength while also moderately improving tensile and shear strengths, thereby greatly improving construction performance and boosting work efficiency.

2. Water-resistant putty

In putty, cellulose ether primarily serves to retain moisture, enhance adhesion, and provide lubrication, thereby preventing cracks and dehydration caused by rapid water loss. At the same time, it improves the putty’s adhesion, reduces sagging during application, and ensures a smoother, more successful construction process.

3. Plastering Gypsum Series

In the gypsum product series, cellulose ethers primarily serve to retain water, thicken, and lubricate the mixture. They also exhibit a certain retarding effect, addressing issues such as cracking and insufficient initial strength during construction and thereby extending the working time.

4. Interface agent

Primarily used as a thickener, it can enhance tensile strength and shear resistance, improve surface coatings, and boost adhesion and bonding strength.

5. Exterior wall external thermal insulation mortar

Cellulose ethers play a key role in this material by providing adhesion and enhancing strength, making the mortar easier to apply and improving work efficiency. They also exhibit anti-sagging properties, while their high water-retention capability extends the working time of the mortar, improves resistance to shrinkage and cracking, enhances surface quality, and boosts bonding strength.

6. Tile adhesive

Higher water retention eliminates the need to pre-soak or moisten tiles and substrates, significantly enhancing their bond strength. The mortar boasts a long working life, a fine, uniform texture, and easy application, while also exhibiting excellent resistance to slippage.

7. Grout and joint sealant

The addition of cellulose ether imparts excellent edge adhesion, low shrinkage, and high abrasion resistance, protecting the substrate material from mechanical damage and preventing penetration that could affect the entire structure.

8. DC flat material

The cellulose ether’s stable adhesion ensures excellent fluidity and self-leveling properties. By controlling the water retention rate, it enables rapid setting, thereby reducing cracking and shrinkage.

9. Latex paint涂料

In the coatings industry, cellulose ethers can be used as film-forming agents, thickeners, emulsifiers, and stabilizers, imparting the coating film with excellent abrasion resistance, uniformity, adhesion, and improved surface tension. They also exhibit good compatibility with organic solvents and possess high water-retention properties, which contribute to their excellent brushability and leveling performance.

10. Honeycomb pottery

Innovative cellular ceramics impart lubricity and water-retention properties to the green body while enhancing its strength.

11. In China, the largest consumer sector for hydroxypropyl methylcellulose (HPMC) is the suspension polymerization of vinyl chloride. In the suspension polymerization of vinyl chloride (VC), the dispersion system directly affects the quality of the resulting PVC resin as well as its processing and end products. To enhance the thermal stability of the resin and control the particle size distribution—thereby adjusting the density of the PVC—HPMC is used at a rate ranging from 0.025% to 0.03% of the total PVC production. PVC resins prepared using high-quality HPMC not only meet international standards in terms of performance but also exhibit excellent apparent physical properties, superior particle characteristics, and outstanding melt rheological behavior.

Currently, the quality of domestically produced hydroxypropyl methyl cellulose ethers has reached import-level standards.

Moreover, studies have shown that during PVC production, different enterprises employ varying dispersion systems, resulting in PVC films with distinct properties and consequently affecting the processing performance of PVC resin. In composite dispersant systems, experiments have demonstrated that the impact on the processing performance of suspension PVC resins prepared using polyvinyl alcohol (PVA) with different degrees of hydrolysis and polymerization combined with hydroxypropyl methyl cellulose (HPMC) is as follows: A combination of KP-08 or KZ-04—with a degree of hydrolysis ranging from 68% to 75%—and HPMC proves to be particularly effective, promoting a loose and porous resin structure and facilitating the absorption of plasticizers.