Technique of preparing superfine functional talcum powder

Abstract

The invention relates to a technology for preparing ultrafine functional talcum powder, in particular to an improved technology for preparing ultrafine functional talcum powder, belonging to the technology for preparing ultrafine powder. The improved technology for preparing ultrafine functional talcum powder has less investment and low manufacturing cost and can enlarge hydrophilic organic area. The ultrafine functional talcum powder with the chemical formula of MgO.SiO3 is prepared by mixing talcum powder and maleic anhydride additive with the chemical formula of 3MgO.4SiO2.H2O in a reaction kettle and processing the talcum powder and the maleic anhydride additive at a high temperature of 1000-1300 DEG C.

Description

Technical field: [0001] The present invention relates to ultrafine powder technology, specifically the improvement of ultrafine talcum powder preparation technology. Background technique: [0002] At present, 67% of talc minerals in the United States and 59% in Europe are used in the production of plastics industry and high-functional composite materials, while 5% of talc minerals in China are used in plastics, papermaking, and advanced coatings. The ultra-fine functional talcum powder and special functional plastic composite materials needed in the domestic market are mainly imported to meet the needs of the domestic market. [0003] In modern times, powder technology is one of the most eye-catching technologies. Powder and powder technology are involved in many industries and fields. It can be said that powder and powder technology are one of the basic technologies supporting contemporary high-tech . Powder and powder technology include two contents, one is the design an...

AI Technical Summary

Problems solved by technology

Among ultrafine granules, ultrafine talc is more difficult to activate and manufacture masterbatch technology due to its flaky particle structure, and the finer the talcum powder, the more difficult it is; After activation, talcum powder has a large volume and contains a lot of air, so it needs to discharge the gas to discharge the air brought in by the particles from the exhaust port. Moreover, due to the large specific surface area of ​​ultrafine particles, it is easy for the particles to "agglomerate". The hydrophilic organic area with ultra-fine particles is small, it is not easy to mix organic matter uniformly, and it cannot produce functional fillers, and it does not have special functions such as high hardness and high resistance to produce composites; Phenomena, feeding and cutting and temperature become a key problem in the production of ultra-fine functional talc powder, resulting in high cost of talc powder products, insufficient fineness, wide particle size distribution, and cannot be used in plastics, papermaking, and advanced coatings