The concentration of the methylcellulose solution, whether it’s dissolved in water or organic solvents, is a crucial factor that should be determined based on the specific application and the type of product chosen. For low viscosity products (15~100mPa·s), a concentration of 10% and 15% is recommended, while high viscosity products (400 75000mPa ·s) should not exceed […]
Waterproof mortar is different from concrete as a structural material. In addition to the required strength, waterproof mortar is mainly required to meet the functions of water retention, bonding, waterproofing, crack resistance, impact resistance, freeze-thaw resistance, high-temperature resistance, and thermal insulation, so the product’s composition is relatively complex. The development and production of waterproof mortar […]
Methyl cellulose is a general term for a type of cellulose ether whose primary substituent is methyl, including single ether methylcellulose (MC), hydroxyethyl methyl cellulose (HEMC), hydroxypropyl methylcellulose Cellulose mixed ethers such as hydroxy butyl methylcellulose (HPMC), hydroxy butyl methyl cellulose (HBMC), ethyl methyl cellulose (EMC) and carboxymethyl methyl cellulose (CMMC) all have properties similar […]
(1) Workability of waterproof mortar mixture With good workability, the mortar mixture will not quickly produce delamination and segregation; it can be spread into a uniform thin layer on the rough masonry surface and connected well with the base layer, bonding to facilitate construction operations and ensure project quality. The workability of mortar mixtures is […]
The mortar used to make the waterproof layer of buildings is called waterproof mortar. Waterproof mortar is an essential rigid waterproof material that can be used to improve the compactness of the mortar and achieve the purpose of impermeability and waterproofing through strict operating techniques or by incorporating appropriate amounts of admixtures with waterproof properties, […]
Cellulose ether, a product obtained by etherification of insoluble and infusible cellulose, has many important properties, including solution thickening, good water solubility, suspension or latex stability, protective colloid effect, film-forming property, water retention properties, adhesive properties, non-toxic, tasteless, biocompatibility; thixotropy, etc. In addition, cellulose ethers have many unique properties: thermal gelling, surface activity, foam stability, […]
(1) Solubility The solubility of cellulose ether in alkaline aqueous solution, water, or organic solvent depends on the nature of the etherification group and the degree of substitution (DS). Substances with a DS value below 0.1 are generally insoluble and differ from cellulose only in some physical and technical parameters, such as tensile strength, surface […]
Dry-mixed mortar can be divided into packaged dry-mixed mortar and bulk dry-mixed mortar. The former is packed in 25kg plastic woven bags or composite kraft paper bags, while the latter is transported in bulk trucks and to steel storage tanks under pressure. Mixing of dry-mixed mortar Dry-mixed mortar should be mixed mechanically, and portable mixers […]
Wood fiber is a white or off-white powdery fiber made from high-grade natural wood rich in lignin (such as fir and beech), dietary fiber, vegetable fiber, chemically treated, extracted, and ground. Wood fiber is a natural fiber that absorbs water and is insoluble in water. It has excellent flexibility and dispersion. Adding appropriate amounts of […]
Cellulose ether is a general name for various derivatives obtained through the etherification of natural cellulose. As the primary raw material, the source, type, treatment method, and process of cellulose have a decisive impact on the synthesis and application of cellulose ether. 1. Sources and types of cellulose As early as 1838, French botanist Anselme […]
