APPLICATIONS

How does it produced?

The Carbon Black is chemically pure carbon

Is produced in special reactors by the thermal decomposition of an oil used as raw material.

The high temperatures in the reactor cause the rupture of the oil molecules in their two basic components: carbon and hydrogen. At this stage variables air, oil and natural gas, as well as temperature and reaction time are controlled.

The Carbon Black obtained, together with the combustion gases, advances to the filtering step where carbon black is separated from the gases, which then burn in the fireplace, mainly resulting water vapor and carbon dioxide.

The Carbon Black in powder form is fed to the agglomeration step, where the particles are wetted, forming small spheroids that pass the dryer to remove excess water, and impart final product conditions. It is then sent to the storage silos, from where the feed bagging systems and bulk filling. The entire process, from receipt of raw materials to the dispatch of the finished product is controlled under a harsh environment Total Quality, with which the company has international certification under ISO 9001 since 1995. Negroven also has the low Certification Standards ISO 14001 since July 1998.

The Carbon Black is chemically pure carbon, and is produced in special reactors

By the thermal decomposition of an oil used as raw material. The high temperatures prevailing in the reactor cause the rupture of the oil molecules in their two basic components: carbon and hydrogen. At this stage variables air, oil and natural gas, as well as temperature and reaction time are controlled.

Application performance of a Carbon Black is determined by its nature and the level of dispersion achieved.

The most important physical and chemical properties are: particle size, surface area, porosity, structure, chemical surface characteristics and physical form.

The particle size has a great influence on the color properties. The smaller particles are more vivid color and higher viscosity and require more energy for dispersal. The particle size is measured by an electro microscope.

The surface area is a criterion of quality control, being a function of the particle size and porosity of the Carbon Black. Smaller diameter particles give rise to a larger surface area. A larger surface area is associated with greater color depth and higher viscosity.

Porosity is indicated by a comparison of the external surface area of Carbon Black. Carbon Black intense color and conductive tend to have a high degree of porosity.

The structure is a measure of three-dimensional fusion of Carbon Black particles to form aggregates. Carbon black with high structure provide

Globally, rubber products consume 90% of Carbon Black produced, where it is used to impart reinforcement characteristics, wear resistance, tear resistance, ease of extrusion, among other features, constituting an important part by weight of rubber products.

The remaining 10% of world production of this versatile raw material finds application in inks for paper, inks for printers, inks for pens, paints, carbon paper, plastics, food packaging, eyeliners, as well as many other items for use industrial, domestic and even personal and beauty, for which, in many cases, different special Carbon Black are used to achieve specific characteristics required for each item carefully.