纤维素类物质（如微晶纤维素、羟丙甲纤维素、羧甲纤维素钠等）是药用辅料中应用广泛的类别之一，凭借良好的生物相容性、稳定性及可调控的物理化学特性，在药物制剂中承担多种关键功能，核心可分为制剂成型功能、药物释放调控功能、稳定性提升功能及其他辅助功能四大类，具体如下：

In toothpaste production, hydroxypropyl methylcellulose (HPMC) is commonly used as a binder, thickener, and stabilizer. Its mechanism of regulating viscosity and extrusiveness, as well as its impact on taste, are as follows:

Cellulose (commonly used natural cellulose derivatives in toothpaste, such as carboxymethyl cellulose sodium CMC, hydroxyethyl cellulose HEC, etc.) is an important functional additive in toothpaste. Through its thickening, stability, film-forming and other characteristics, it plays a key regulatory role in the basic form and performance of toothpaste, as follows:

Cellulose ether is mainly used in the formation of honeycomb ceramic bodies (such as extrusion molding) by improving the rheological properties, moisture retention ability, and interparticle bonding force of the body material to regulate plasticity, making it easier to form honeycomb structures with regular structures (without cracking or deformation). Its mechanism of action and regulatory mechanism are as follows:

Cellulose ether is a key organic additive in the injection molding process of honeycomb ceramics. Its function revolves around "improving the fluidity of the slurry, enhancing the performance of the green body, and ensuring the stability of the molding", which is specifically reflected in the following four core aspects:

During the injection molding process of honeycomb ceramics, hydroxypropyl methyl cellulose (HPMC) serves as a key additive, mainly exerting multiple effects by regulating the rheological properties, stability, and strength of the slurry, and significantly improving the molding efficiency. The specific mechanism is as follows:

In decorative sealants such as silicone sealants and polyurethane sealants, hydroxypropyl methyl cellulose (HPMC) mainly indirectly regulates the curing speed and elasticity by regulating the rheological properties, water migration, and interactions with other components of the system. The specific mechanism is as follows:

When cellulose ethers (such as hydroxypropyl methyl cellulose HPMC, carboxymethyl cellulose CMC, etc.) are used as thickeners and filtrate reducers in coalbed methane fracturing fluids, it is necessary to optimize their performance and construction processes to reduce damage to the coal seam (such as decreased permeability, pore blockage, etc.). Specific measures are as follows:

In the production of honeycomb ceramics, the high temperature resistance of ceramics can be improved by the following cellulose ether modification methods:

Environmental factors have a significant impact on the gel time of HPMC (hydroxypropyl methyl cellulose), which is mainly achieved by changing the molecular motion rate, cross-linking reaction activity or the stability of HPMC itself. The specific effects are as follows: