Guibao Brand Heavy Calcium Carbonate 2500 Mesh - High-Density Calcium Carbonate for Rubber Compounds

Calcium carbonate is a non-toxic, tasteless, non-irritating white powder, one of the most versatile inorganic fillers. It is dry and does not contain crystallized water, and is exposed to the air.

Almost insoluble in water, insoluble in alcohol, dilute acetic acid, dilute hydrochloric acid, dilute nitric acid to boil and dissolve;Heat is decomposed into calcium oxide and carbon dioxide.

Calcium carbonate has not only cheap, abundant resources, high grade, etc, but also has some properties of fllers, widely used in coatings, plastics, printing ink, putty, plastic flm, chemical fiber, sealants, adhesives, daily-used chemical industry, medicine, rubber, paper, toothpaste, cosmetics, food, textile, building materials, fodder, etc.

Product Characteristics

Ultra - fine Particle Size: With a 2500 - mesh fineness, its particle size is extremely small, usually with a D50 particle size of around 2 - 2.5 μm and a D97 particle size of about 5 - 5.5 μm. Such fine particles can be evenly dispersed in rubber compounds, filling the micro - gaps in the rubber and improving the smoothness and surface quality of rubber products.

High Purity: The calcium carbonate content is generally as high as 98% - 99% or more, with very low impurity content. This ensures that it has minimal impact on the performance of rubber compounds, helping to maintain the stability of rubber product quality.

Good Whiteness: It has a high whiteness, generally not less than 96%. The high - whiteness calcium carbonate can improve the whiteness of rubber products and is suitable for the production of light - colored or white rubber products, enhancing their decorative effect.

Low Oil Absorption Value: It has a relatively low oil absorption value, usually in the range of 18 - 30 g / 100 g. This helps to reduce the amount of additives such as plasticizers in rubber compounds, which can not only reduce production costs but also improve some properties of rubber, such as reducing the viscosity of rubber compounds and improving processing performance.

High Density: Its density is relatively high, about 2.71 g / cm³. The high - density calcium carbonate can increase the density of rubber products and is suitable for applications where high - density rubber products are required.
Functions in Rubber Compounds

Reducing Costs: As a filler, it can replace some expensive rubber raw materials, thereby reducing production costs. Under the premise of meeting the basic performance requirements of rubber, the appropriate addition of Guibao Brand Heavy Calcium Carbonate 2500 Mesh can effectively control production costs and improve the economic benefits of rubber products.

Improving Mechanical Properties: It can improve the hardness, rigidity, and tear strength of rubber compounds. Appropriate addition can increase the mechanical strength of rubber, making it more resistant to deformation and wear, and prolonging the service life of rubber products.

For example, in the production of tires, the addition of calcium carbonate can improve the wear resistance and puncture resistance of tires.

Enhancing Processing Performance: The fine - particle - sized calcium carbonate can improve the fluidity of rubber compounds, making the processing and molding of rubber easier and improving production efficiency. At the same time, it can also reduce the shrinkage and warping of rubber products during cooling and solidification, improving the dimensional accuracy of products.

Improving Other Properties: It can also improve the heat resistance, weather resistance, and electrical insulation properties of rubber compounds. In some special - purpose rubber products, such as heat - resistant rubber seals and insulating rubber products, the addition of calcium carbonate can improve their performance in specific environments.

Product Advantages

Wide Range of Applications: It is suitable for various types of rubber, including natural rubber, synthetic rubber, and rubber latex. It can meet the performance requirements of different rubber products in different fields, such as in the production of tires, rubber hoses, rubber sheets, and rubber seals.

Stable Quality: With strict quality control, the physical and chemical properties of Guibao Brand Heavy Calcium Carbonate 2500 Mesh are relatively stable.

This ensures the consistency of rubber product performance during production, reduces product quality fluctuations caused by raw material differences, and is conducive to manufacturers' large - scale production and quality control.

Cost - Effective: While ensuring product performance, it has a relatively reasonable price. Compared with some high - performance fillers, it has a certain price advantage, which can help manufacturers improve the market competitiveness of rubber products.

Application:

Coating, Plastic, Rubber, Papermaking

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