Silanes are a group of various compounds which are used, among other things, as adhesion promoters and grafting additives for the manufacturing of cable insulation or for the production of chemical intermediates.
LEWA creates systems that can meter any silane type reliably, precisely as well as in constant consistency and purity, regardless of chemical or physical attributes or process requirements. Through adaptive regulation, the control unit LEWA smart control enables quick adjustment of the actual value due to fast transient oscillation, and thus highly precise metering. With more than 60 years of experience, a wide variety of pumps that can handle all volume flows and pressures, and customized system solutions, LEWA is able to fulfill all process requirements.
Metering silanes with LEWA systems has the following advantages:
Silanes are used in the following industries and products:
What is important when metering silane?
In order to meet the production requirements (reproducibility, consistency, product purity etc.) of plastic cables and plastic pipe compounds for the manufacture of cable and/or wire insulation, metering must be precise, easily adjustable, and unaffected by external influences.
The extremely precise metering is effected via a hopper into the extruder (almost pressureless in laboratory applications) or into the process zone of the extruder by an injection pipe which places silane in the melt polymer. The choice of silane type depends on polymers. Special type organosilanes open new possible applications because they are important components of paints and coatings and their adhesion to various grounds is guaranteed for years.
The speed of silane crosslinking in polyethylene of cables can be influenced by:
Source: Wacker Chemie AG, EVONIK Industries
We have supplied durable pumps and metering systems for applications such as the hydrocracking process for over 50 years. Petrochemicals generate starting products for the manufacture of plastics, pharmaceuticals, colorants, detergents, and other products. Contact our experts and allow us to provide you with detailed information about metering and pumping solutions for the hydrocracking process!
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