-
1. Theoretical basis It can be seen from the structural formula that the hydrogen (Na+) on CMC is very easy to dissociate in aqueous solution (generally exists in the form of sodium salt), so CMC exists in the form of anion in aqueous solution, that is, it has a negative charge and is amphoteric....Read more »
-
Hydroxyethyl methyl cellulose HEMC can be used as colloid protective agent, emulsifier and dispersant due to its surface active function in aqueous solution. An example of its application is as follows: The effect of hydroxyethyl methyl cellulose on the properties of cement. Hydroxyethyl methylce...Read more »
-
anti-crack mortar Anti-crack mortar (anti-crack mortar), which is made of anti-crack agent made of polymer emulsion and admixture, cement and sand mixed with water in a certain proportion, can satisfy a certain deformation without cracking, and cooperate with the grid Cloth works better. Construc...Read more »
-
Waterborne coating system as an important application field of cellulose ether industry, there has been a lack of excellent domestic cellulose ether to meet the growing market demand, with the epidemic and changes in the international situation, cellulose ether supply chain has also been greatly ...Read more »
-
The role of redispersible latex powder in mortar At present, as various special dry powder mortar products are gradually accepted and widely used, people in the industry pay attention to redispersible latex powder as one of the main additives of special dry powder mortar, so various attributives ...Read more »
-
The thickening mechanism of hydroxyethyl cellulose is to increase the viscosity through the formation of intermolecular and intramolecular hydrogen bonds, as well as hydration and chain entanglement of molecular chains. Therefore, the thickening method of hydroxyethyl cellulose can be divided int...Read more »
-
Analysis of cracking causes of plastering gypsum layer 1. Reason analysis of plastering gypsum raw materials a) Unqualified building plaster Building gypsum contains high content of dihydrate gypsum, which leads to faster bonding of plastering gypsum. In order to make plastering gypsum have a pro...Read more »
-
HPMC hydroxypropyl methylcellulose has become one of the largest pharmaceutical excipients at home and abroad, because HPMC has advantages that other excipients do not have. 1. Water solubility It is soluble in cold water below 40 ℃ or 70% ethanol, and it is basically insoluble in hot water above...Read more »
-
1. What is the main use of cellulose? HPMC is widely used in construction materials, coatings, synthetic resins, ceramics, medicine, food, textiles, agriculture, cosmetics, tobacco and other industries. HPMC can be divided into industrial grade, food grade and pharmaceutical grade according to th...Read more »
-
Cellulose ether is natural cellulose (refined cotton and wood pulp, etc.) as raw materials, after etherification of a variety of derivatives, is the cellulose macromolecule hydroxyl hydrogen by ether group partially or completely replaced after the formation of products, is the downstream derivat...Read more »
-
Natural adhesives are commonly used adhesives in our lives. According to different sources, it can be divided into animal glue, vegetable glue and mineral glue. Animal glue includes skin glue, bone glue, shellac, casein glue, albumin glue, fish bladder glue, etc.; vegetable glue includes starch, ...Read more »
-
This article in the form of questions and answers for the reader about hydroxypropyl methyl cellulose ether related knowledge, so that you have a deep understanding of HPMC in a short time, in order to better choose and use this kind of products in the actual production. 1, what is the main use o...Read more »