Corrosion resistant modified calcium carbonate with excellent overall performances and preparation method thereof

Abstract

The invention discloses corrosion resistant modified calcium carbonate with excellent overall performances and a preparation method thereof. The corrosion resistant modified calcium carbonate is characterized by comprising the following raw materials in parts by weight: 100-150 parts of calcium carbonate, 30-50 parts of sodium oleate, 0.3-0.7 part of sodium dodecyl benzene sulfonate, 1-3 parts of sodium bicarbonate, 4-8 parts of styrene, 0.02-0.05 part of potassium persulfate, 3-5 parts of fumed silica, 2-3 parts of organobentonite, 1-2 parts of trioctyl trimellitate, 2-4 parts of glass dust, 2-5 parts of polytetrafluoroethylene powder and appropriate amount of deionized water. According to the invention, the added trioctyl trimellitate, glass dust and polytetrafluoroethylene powder have a synergistic effect to enhance the corrosion resistance, acid resistance and abrasion resistance of calcium carbonate and are added into a coating to improve the hardness, tenacity and weather fastness of a paint film; when the modified calcium carbonate prepared through the preparation method disclosed by the invention is added into a coating, the enhancement function is realized, the paint quality is improved, the cost is reduced, and the preparation technology is simple and deserves popularization.

Description

Technical field [0001] The invention involves industrial filler areas, especially a comprehensive performance of calcium carbonate and its preparation methods with good comprehensive performance. Background technique [0002] Calcium carbonate, as a filler for rubber and plastic products, can improve the heat resistance, abrasion resistance, size stability, stiffness and processability of the product, and reduce the cost of the product.It presents a strong alkaline. The nature of this kind of hydrophilic oil and oil and oil and oil carbonate is poor with the affinity of organic polymer.The interface defect, the direct application effect is not good, and calcium carbonate is used as a filler, and its acid resistance, smoothness, whiteness and other properties need to be further improved. Therefore, in order to improve the reinforcement effect of calcium carbonateThe physical properties of calcium carbonate filling composite materials are necessary to use different surface modifier...

AI Technical Summary

Problems solved by technology

[0002] As a filler for rubber and plastic products, calcium carbonate can improve the heat resistance, wear resistance, dimensional stability, rigidity and processability of the products, and reduce the cost, but its surface has a strong hydrophilic hydroxyl group, showing a strong alkalinity. This hydrophilic and oleophobic property makes the affinity between calcium carbonate and organic polymers poor, and it is easy to form aggregates, resulting in Partially dispersed in the polymer is not uniform, resulting in interface defects between the two materials, the direct application effect is not good, and calcium carbonate as a filler, its acid resistance, smoothness, whiteness and other properties need to be further improved, therefore, in order to To improve the reinforcing effect of calcium carbonate and the dispersion performance in composite materials and the physical properties of modified calcium carbonate filled composite materials, it is necessary to use different surface modifiers and treatment methods to modify the surface of calcium carbonate powder, and then broaden the Application fields of calcium carbonate