¿Qué es la silicona surfactante ?Tensioactivo de silicona , este adyuvante de pulverización es un super difusión Agente hecho de poliéter trisiloxano modificado .    Características clave y ventajas típicas de silicona surfactanteReduce la cantidad de pesticidas de pulverizaciónSúper difusión y penetrante de pulverización de productos químicos agrícolasPromueve la rápida asimilación de los agroquímicos ( resistencia a la lluvia )Mejora la fiabilidad de la aplicació ...

Che cosa è in silicone tensioattivo ?Silicone Tensioattivo , questo adiuvante spray è un super agente di diffusione fatta di polietere trisiloxane modificato.    Principali caratteristiche e vantaggi tipici di silicone tensioattivoRiduce la quantità di pesticidi spruzzoSuper diffusione e penetrazione di spray chimici agricoliPromuove la rapida diffusione di prodotti agrochimici ( resistenza alla pioggia )Migliora l'affidabilità delle applicazioniMigliora la copertura a spruzzo ...

Silicone hoạt động bề mặt là gì?Silicone hoạt động bề mặt , tá dược phun này là một siêu lây lan chất độc làm bằng polyether trisiloxane sửa đổi.    Các tính năng chính và lợi ích tiêu biểu của Silicone hoạt động bề mặtLàm giảm lượng thuốc trừ sâu phunSiêu lây lan và xâm nhập của phun hóa chất nông nghiệpThúc đẩy sự hấp thu nhanh chóng của hóa chất nông nghiệp ( mưa độ bền )Cải thiện độ tin cậy ứng dụ ...

Surface tension can be considered in various ways, but perhaps best as a result of the forces of attraction existing between the molecules of a liquid. It is measured by the force per unit length acting in the surface at right angles to an element of any line drawn in the surface (mN/m). Wetting is the effect of displacing one fluid from the substrate surface by another liquid. In general, the liquid must have the same or a lower surface tension than the substrate; otherwise, no wetting wil ...

The interfacial tension of a liquid to the air interface is termed surface tension. This is the energy which is required to bring a particle from inside a liquid to the air interface. The surface of the liquid is enlarged. Attractive forces act between the molecules of the liquid. Inside the liquid, these forces cancel each other as they act uniformly in all directions. At the interface, the resulting force is oriented towards the interior of the liquid; the liquid tries to reduce its surface ar ...

When a liquid coating is applied on a substrate, it is expected, that it will wet that substrate easily and evenly. Good wetting is necessary for an optically perfect surface, good adhesion to the substrate and full functionality of the coating (substrate protection). Most important for the substrate wetting are the surface tension values of the involved materials: the liquid coating and the solid substrate. In general, for good substrate wetting the surface tension of the coating material (p) ...

Silicones are highly surface active due to their low surface tension caused by the large number of methyl groups and due to the small intermolecular attractions between the siloxane hydrophobes.  The siloxane backbone of the molecule is highly flexible, which allows for maximum orientation of the attached groups at interfaces.Silicone polyethers are non-ionic and have both a hydrophilic part (low-molecular-weight polymer of ethylene oxide or propylene oxide or both) and a hydrophobic part ( ...

As shown above, by adjusting the polarity it is possible to synthesize silicone additives which are compatible with aqueous coating systems. However, oftentimes it is observed, that the efficiency of such additives is not sufficient, especially when wetting of low energetic substrates (plastics) is concerned. The water content in these coating systems creates a relatively high surface tension(higher than in solvent-based coatings) which is reduced by the silicone additives, but oftentimes is sti ...

The surface tension of the liquid coating is primarily defined by the selection of the resins and the solvents; the pigments have no influence. In practice, however, selection of these raw materials is normally not based on their surface tension but on other properties. Resins are selected regarding, e.g., their cross-linking mechanism, the required chemical resistance and the mechanical properties of the dry film. For the solvents it is important that they can easily dissolve the resins in ques ...

Wetting can be influenced by the substrate surface and via the formulation ofthe coating. In principle, a solid surfaceis always well wetted if the surface tension of the liquid is small compared to the free surface energy of the substrate. Substrates with low surface energies include polyethylene, polypropylene and Teflon, examples of high energy surfaces are metals, metallic oxides and glass.Cleaning of metallic substrates removes grease and increases their surface energy. Corona treatment of ...