Starch ethers, specifically starch ether varieties, are used in cement-based systems such as plastering, adhesives, and leveling layer to form functional surfaces both internally and externally. Plastering mortar is used to cover uneven parts of walls. They must have a strong and durable bond to the substrate. The surface of the mortar must become smooth and flat in order to … Continue reading
A. The rheology properties of starch ether in machine and spray mortar Starch ethers prevent sagging of mortar and enhance pumping properties. They are easy to distribute evenly in mortar because they are of low viscosity, can dissolve fast, change the rheology of the plaster and gave it thixotropy. This shows that when the external force … Continue reading
Hydroxypropyl Methyl Cellulose Ether (HPMC) are referred to as Methyl Cellulose ether (MC). MC is one of the most important additives in dry powder mortar which mainly plays the role of water retention and thickening. MC is a kind of powdered cellulose ether made of wood fiber or refined short cotton fiber as the main … Continue reading
A fiber is a cell which is a typical dead plant cell with two pointed ends, thick skin, and void in the middle. The fibers (cells) are characterized by being thin and long, with spindle-like ends, flexible, and have a certain binding force with each other after interweaving. The fiber cell is empty inside and surrounded by the cell wall which is composed … Continue reading
Viscosity There are different types of viscometers used to measure the viscosity of a cellulose ether solution. The widely adopted viscometers are: HoppIer falling ball viscometer, Haake rotation Rheometer and Brookfield rotation viscometer. The viscometer commonly used in China is NDJ series. The viscometers adopted by different cellulose ether manufacturers are different in the market. With the same solution, testing in different viscometers, … Continue reading
During the study of dry mixed mortar, more attention is paid on admixtures and fiber materials, while the roles of aggregate and filler are often ignored. The effect of reasonable combination of aggregates and fillers is often beyond the reach of admixtures. Reasonable gradation can save cost and improve the comprehensive performance of the product. Experiments show that the higher … Continue reading
Cementing materials are substances with a certain mechanical strength, that can bind other bulk materials (such as sand and stones) or block materials (such as bricks and stones) as a whole during the process of gradually changing from a malleable slurry to a solid stone-like solid under physical and chemical action. The cementing material has a long history … Continue reading
As a covering material for buildings, ceramic tiles are popular among people. In addition to providing decorative surfaces with aesthetic usage, ceramic tiles are also resistant to water, hard, hygienic and easy to clean. However, the problem of tile peeling, this is, the failure of the tile bonding system, is of more concern. From the … Continue reading
Internal Coating/机内涂布 常规机内涂布纸种/General Internal Coating Papers: 1. 铜版纸 Copperplate Paper 2. 白卡纸 Ivory Board Paper 3. 涂布白板纸 Duplex Board Paper 4. 微涂双胶纸 Micro-coated Offset Paper 5. 涂布白面牛卡纸 Coated White Top Test Liner Conversion Coating/机外涂布 常规机外涂布纸种/General Conversion Coating Papers 6. 热敏纸 Thermal Paper 7. 无碳复写纸 Carbonless Paper 8. 热升华转印纸 Heat Sublimation Transfer Paper 9. 标签纸 Label … Continue reading
There are different views on the interaction between polyvinyl acetate and cement in aqueous solution. Some scholars think that the modified cement mortar with polyvinyl acetate itself forms polymer film inside and the holes inside mortar are sealed or covered, so its impermeability is improved. Foreign scholars think that the interaction between polymer and Ca(OH)2 … Continue reading