Talc deagglomeration equipment, drying equipment, and disintegration equipment.

Release time:

2025-01-03 09:45

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As an important inorganic chemical product, wollastonite has a wide range of applications in the industrial field. However, it also has some limitations, such as poor compatibility with organic polymers and inadequate dispersion in organic polymers. The emergence of coating modification machines has brought new opportunities for the processing of wollastonite.

(1) Inorganic precipitation reaction modification method

The inorganic precipitation reaction modification method uses chemical reactions to form a modified layer on the surface of needle-like wollastonite through the reaction products, improving the surface properties of needle-like wollastonite through the functional structural units on the modified layer. This method is simple to operate and low in cost.

((2) Mechanical force chemical reaction method

The mechanical force chemical reaction method is a composite improvement approach that first crushes and granulates wollastonite particles using mechanical force to improve the uniformity and aspect ratio of wollastonite, followed by chemical modification. This modification method can effectively reduce modification costs and simplify the process.Mechanical methods are commonly usedThe honeycomb grinding modification machine, as an innovative ultrafine grinding and surface modification device, has attracted widespread attention in the powder processing field in recent years. Its unique honeycomb structure design not only achieves efficient grinding of materials but also allows for simultaneous surface modification during the grinding process, greatly enhancing the performance and application range of powder products.

(3) Organic reaction coating method

The organic reaction coating method utilizes functional groups of organic compounds to react on the surface of wollastonite, achieving the purpose of coating and improving surface properties.

ModifiedWollastonite is widely used in organic polymer materials and composites such as plastics, rubber, fibers, as well as in fields like paints, coatings, and adhesives. In the plastics industry, wollastonite's high electrical resistance, low dielectric constant, and low oil absorption give it a significant advantage over other non-metallic mineral materials. The compatibility of modified wollastonite with plastics is greatly improved, and its retained needle-like crystal form after grinding allows it to enhance the performance of plastics while ensuring products have high thermal stability, low dielectric properties, low oil absorption, and high mechanical strength, while also reducing product costs. In the rubber industry, wollastonite can largely replace titanium dioxide, clay, and lithopone in light-colored rubber, providing reinforcement and improving the hiding power of white pigments, thus enhancing whiteness. After organic modification, wollastonite not only has an oleophilic surface but also, due to the double bond in the sodium oleate molecules, can participate in vulcanization, enhancing cross-linking and significantly improving reinforcement effects. In the coatings industry, wollastonite powder can replace a certain amount of titanium dioxide and other white pigments as a filler pigment, as wollastonite powder has high surface gloss, good waterproof resistance, and lower costs, which can increase the thickness of the coating and adjust the rheological properties of the paint. It is widely used in the ceramics industry, accounting for about 50% of the total domestic usage. Its application in the paper industry is quite different from other fillers, mainly relying on a higher aspect ratio to achieve the interweaving of wollastonite with plant fibers, forming a network structure of plant fibers and mineral fibers, which can replace part of the short fibers of plants, effectively improving the opacity and printability of the produced paper, enhancing uniformity, and reducing manufacturing costs.

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