Natural Silica

Silica is used by several industries. Due to the knowledge of its characteristics and wide functionality, it is a source of interest from many researchers. Silica is available in a variety of forms and the types of silica to be produced from rice husk are classified as HDS (Highly Dispersible Silica) and EDS (Easy Dispersible Silica), classified by the dispersibility level, i.e. the capacity of it particles disaggregation.

The greater the dispersion degree the more silica can be introduced into compounds, i.e. rubber. Silicas are added in rubber as reinforcing, as well as to decrease the tire rolling resistance. In comparison, an EDS can not enter into a higher percentage in a formulation compared to a HDS. ORYZASIL produces HDS and EDS, in addition to the functionalized silicas.

At ORYZASIL you find chemically versatile silicas that can be applied to various products.







Know more about the advantages of silica produced at Oryzasil:

  • Produces special silicas with high versatility of application
  • Low VOC emission
  • Process simplification
  • Reduces dependence on the mixing process
  • Minimized protein adsorption (NR) on silica surface
  • Reduces mixing steps and/or faster mixing cycles
  • Less energy and lower temperature for mixing
  • Reduces equipment wear
  • Possible use of alternative silanes
  • Improves tire wet performance
  • Good surfactants
  • Ability to give a covalent bond with silica

ORYZASIL ED 175 MP

Easy Dispersible Silica

Silica for general purpose, traditionally used in the rubber goods industry, from tires to technical parts and even soles for shoes. Its function is to reinforce the rubber, providing mechanical resistance and increases and wearability

ORYZASIL HD 165 MP

Silica has become a strategic raw material for the tire production, due to the development of high energy efficient tires.

Energy efficient tires are part of the latest technological revolution, whose application of a chemical raw material, precipitated silica, enables the car equipped with this type of tire to reduce fuel consumption due to reduced rolling resistance caused in part by the weight of the vehicle constantly pressed against the road. The deformation caused by the weight of the car converts the kinetic energy into heat, wearing it down. This phenomenon is known as the loss of hysteresis.

Applied to the tire tread, silica reduces the loss of hysteresis without reducing tire grip on the road. Thus, it reduces rolling resistance by about 30%, which means a 5% to 7% reduction in fuel consumption. Silica also increases the wet grip of the tire

 

ORYZASIL ST 165 MP

  • Low VOC emission
  • Process simplification
  • Reduces dependence on the rubber mixing process
  • Minimize chemical adsorption on silica surface
  • Reduces mixing steps and/or faster mixing cycles
  • Lower energy consumption
  • Reduces equipment wear

Use of silanes with silicas:

  • Good surfactants
  • Ability to give a covalent bond with silica

Know the applications of silica

TIRES

TIRES

Low rolling resistance, grip on wet roads and wearability.

RUBBER GOODS

RUBBER GOODS

Wearability allows manufacturing of transparent and colored rubbers for shoe soles.

TOOTHPASTE

TOOTHPASTE

Transparency, thickening power, controlled abrasiveness, cleaning.

LIQUIDS ABSORPTION

LIQUIDS ABSORPTION

Turning a liquid into powder, ensure the flowability of powder or powder formulations, food ingredients, animal nutrition and pesticides.

COATING

COATING

Varnish, matting, whiteness.


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