27 Jan 2016
January 27, 2016

Goma de Celulosa

Carboximetilcelulosa 0 Comment

Grado del petróleo goma de celulosa Las tecnologías de fluidos de perforación y fluidos de terminación son las partes importantes en el proyecto de perforación de pozos petroleros.Estas tecnologías juegan un papel clave para garantizar el seguro,la calidad alta y la perforación rápida. Como un tipo de agentes de tratamiento que puede ajustar los rendimientos de.. read more →

Development and Application of Cellulose Ether The cellulose ether is the most abundant natural resource on the earth that can be restored, with such characteristics as low cost, biodegradation, no pollution to the environment. Therefore, countries in the world attach great importance to research and development of cellulose. The cellulose ether has now been widely.. read more →

             Factors Affecting Water Retention of Cellulose ether     The greater the viscosity of cellulose ether is, the better the water retention property will be. The viscosity is an important parameter of HPMC performance. At present, different HPMC manufacturers use different methods and apparatus to measure the viscosity of HPMC,.. read more →

The cellulose ether is also known the rheology modifier, i.e., an additive used to adjust the rheological properties of fresh mortar. The main functions are as follows: (1). It enables the fresh mortar to thicken, thus prevents segregation and obtains uniform plasticizers; (2). It has air entraining effect itself, and can also stabilize the introduced.. read more →

Cellulose ethers are currently the commonly used polymer admixtures of the cement mortar used in construction. Cellulose ethers can be fully dispersed in water to form a transparent viscous liquid. With a small amount (the mass percentage of less than 1%) added to the cement, it can improve the flow and condensation characteristics of cement.. read more →

Cellulose ethers can be monoethers or mixed ethers, and there are certain differences in their performance. On the macromolecules of cellulose, the low-substituted hydrophilic group such as hydroxy ethyl groups, can give the product a certain degree of water solubility. However, for water permeable groups such as methyl, ethyl, etc., only a moderate degree of.. read more →

In 1905, Suida first reported etherification of cellulose, methylation of dimethyl sulfate. Dreyfus (in 1914) and Leuchs (in 1920) respectively obtained water-soluble and oil-soluble cellulose ethers. In 1921, Buchler and Gomberg obtained cellulose, and carboxymethyl cellulose was made by Jansen in 1918 for the first time. In 1920, Hubert obtained hydroxy ethyl cellulose. In the.. read more →

In the building materials industry, cellulose ethers have an extremely wide range of uses. The amount is large and they can serve as retarders, water-retaining agents, thickeners and binders. Cellulose ethers play important roles in ordinary dry mortar, efficient exterior wall insulation mortar, self-leveling mortar, dry plaster adhesives, dry mortar for tile adhesive, high-performance construction.. read more →

Application-of-Ethylcellulose-Coating-to-HydrophilicMatrices read more →

Methyl cellulose and hydroxy ethyl cellulose can be used as stabilizers, thickeners and water-retaining agents in latex paints. In addition, they can also be used as dispersants, tackifiers, and film-forming agents in colored cement coatings. In latex paints, the addition of cellulose ethers with suitable specifications and viscosity can improve the construction performance of latex.. read more →