Enhanced modified calcium carbonate used as cable filler and preparation method thereof

Abstract

The invention discloses an enhanced modified calcium carbonate used as cable filler and a preparation method thereof. The enhanced modified calcium carbonate is characterized by being prepared from the following raw materials in part by weight: 100-150 parts of calcium carbonate, 30-50 parts of sodium oleate, 0.3-0.7 parts of sodium dodecyl benzene sulfonate, 1-3 parts of sodium bicarbonate, 4-8 parts of styrene, 0.02-0.05 parts of potassium persulphate, 3-5 parts of gas phase silica, 2-3 parts of organic bentonite, 2-3 parts of polyisobutylene, 0.4-0.9 parts of 1,6-hexanediol diacrylate, 3-5 parts of vermiculite powder and a proper amount of deionized water. Polyisobutylene, 1,6-hexanediol diacrylate and vermiculite powder which are added according to the invention are matched for usage, so that acid and alkali resistance, acid corrosion and alkaline corrosion resistance, shrinkage resistance, fire resistance, insulation performance and other characteristics of the calcium carbonate powder are enhanced. When the product provided by the invention is used as a filling material of a cable, wear resistance, corrosion resistance, fire resistance, shrinkage resistance and performance in other aspects of the cable are improved. Material production cost is reduced and market competitiveness is improved.

Description

technical field [0001] The invention relates to the field of industrial fillers, in particular to a reinforced modified calcium carbonate used for cable materials and a preparation method thereof. Background technique [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 product, and reduce the cost of the product, but its surface has hydroxyl groups with strong hydrophilicity. It presents 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 uneven dispersion in the polymer, resulting in two materials. The effect of direct application 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 rein...

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