What are the functions of the cutting-edge decorative material micro-cement, which products can be classified as micro-cement products, What kind of micro-cement products It is high-quality.   What are the technical indicators of microcement? What is the difficulty in the research and development of microcement products? These problems are the problems that the micropowders of microcement have encountered or are thinking about in practice.
In the last article, what exactly is microcement, the author defines microcement as: microcement Microcement refers to a decorative material containing ultrafine particles of cement components, which has various advantages of wall and floor materials High-performance durable and highly wear-resistant finish that can be used to decorate walls and floors. Usually composed of two components. Divided into dry powder part and slurry part. In other words, cement is the main material in the dry powder part, and high molecular polymer resin is the main material in the slurry.
The reason why the dry powder part must be cement as the main material instead of gypsum is that the product of microcement evolved from decorative cement. What consumers consume is the cold feeling of cement. Without cement, there is no got this feature.
The performance of single-component cement-based plaster cannot meet the requirements of high adhesion, hardness, strength, wear resistance and toughness and crack resistance of micro-cement. This is why micro-cement needs to use two-component another important reason. In the current market, some manufacturers promote the type of cement-based plaster + penetrant hardener, which is also called microcement, but they do not understand the toughness and crack resistance requirements of microcement. The hardness and wear resistance of the hardened floor are very good, but it is easy to crack. The conventional hardened floor is still easy to crack when the thickness is 10-20mm, and the integration of the wall and the ground cannot be done. If the penetrating agent hardener is used on the cement-based material with a thickness of 2-5mm, although it has better hardness and durability Grinding but more prone to cracking problems. Because it is easy to peel off after being thin and cracked.
The reason for the production of micro-cement is to improve and improve the cement-based decorative plaster, which is easy to crack, pan-alkali, insufficient adhesion, insufficient hardness, non-wear-resistant, non-waterproof and insufficient strength. A common problem with stucco. Therefore, high-quality microcement should have the following functions in terms of performance.
Super strong bonding ability: it can be constructed on ceramic tiles, mosaics, metal, wood and plastics, which are not easy to bond firmly.
No efflorescence: During the hydration and drying process of cement, alkaline substances will be precipitated. It is a normal drying process for cement-based surface and cement-based decorative plaster to precipitate alkali during the drying process. White Alkaline substances affect the aesthetic effect of the decorative surface on the cement-based surface. The two-component design of microcement effectively solves the problem of efflorescence.
The high molecular polymer in the two-component composition of microcement completely blocks the capillary pores in the cement-based plaster during the drying process, so that the impermeability of the microcement coating can reach It is an indicator of the consistent impermeability of waterproof coatings, and the waterproof performance of microcement comes from this. Special attention should be paid to the anti-seepage ability of microcement which can only meet the requirements of vertical waterproofing. If it is used for flat waterproofing, such as areas with accumulated water and rooftop swimming pools, special protective agents need to be applied.
Hardness: The drying process after mixing high molecular polymer and cement-based materials is different from the hardening process of water and cement. Increase accordingly. The hardness of microcement coating can reach BH level without protective agent.
Toughness and crack resistance: During the mixing and drying process of polymer and cement-based materials, the latex in the polymer fills the voids in the cement-based, forming a dried mixture of cement and latex. It can be clearly observed that cement, quartz sand, and latex particles are mixed with each other, which is the root cause of microcement's crack resistance and toughness.
Industry standards based on microcement have not yet been formulated, and these properties are only qualitatively described in the article. Specific indicators need more experiments and data.
However, it can be said responsibly that when some brands and manufacturers introduce micro-cement products, it is incorrect to say that the hardness of micro-cement exceeds ceramic tiles, and the strength exceeds C50 concrete, etc., and even use compressive strength It is even more absurd to use technical parameters to explain the hardness and wear resistance of your products, just like using weight to explain height. A 100 kg person may be 180 cm or 150 cm.
Microcement is a new thing, the depth of research is insufficient, and there are no standardized technical standards at home and abroad. Excessive exaggeration will not only fail to promote your own products, but will damage your own brand and industry.