Understand how surfactants act in paints
Surfactants: technology involved in the manufacture of paints.
Something that often goes on unnoticed, the inks are everywhere and at all times. Employed in many different areas, ranging from the most common applications such as masonry walls to the most sophisticated, as aerospace components, paints promote beautifying and protecting surfaces from chemical and physical activity that could damage the substrate. In addition to these functions, the inks can also be employed to further develop interesting properties such as electrical conductivity, thermal insulation, repellency insects and even antimicrobial protection.
Components of paints
The inks are part of our daily lives, yet few know all the technology related to the manufacturing process and its composition. Each component has a specific function and when processed under certain industrial parameters (temperature, pressure, etc.), may become critical to the development and ultimate application.
Knowing the basic constituents of each of these materials is important for achieving a balanced formulation with a particular property.
The main raw materials used are:
- Pigments and / or colorants: They are primarily responsible for promoting the color inks. An ink without colorant may be a varnish.
- Resins: essential component connected to the dry film properties, such as chemical and physical resistance.
- Solvents: Main constituent for mixing the components, in addition to control of the rheological and application to the substrate (wood, metal, fibers, etc.).
- Additives: dosed materials in small percentages in the formulation of paints, responsible for various functions related to the final performance of the dry film but also in the state "in can"(In the can). Current tambémna processability, rheology, conservation and often promote new properties functional.
Because surfactants are so important?
It is important to note that all these components have the most different structures. The resins may be natural organic origin and / or synthetic, and even solvents and pigments, may also have inorganic origin, usually based on metal oxides and compounds.
The mixture of these components is very complex because each one has its own peculiarities as their chemical and physical composition (solid, liquid, particulate, suspension etc.), similarly, be as mixing water, oil, salt, sugar and yet maintain a cohesive structure without phase separation and change in physical properties over time.
Thus the great challenge for the production of stable inks with different components is to find solutions that can stabilize these mixtures, ie to develop inks in the form of emulsions (liquid-liquid mixture) or suspensions (liquid-solid). In this scenario it is that the surfactants, also known as surfactants, which perform a particular function is to match these different materials together, by modifying the surface tension and also to create "links"Between polar molecules (eg water) and nonpolar (eg, oils) that would normally immiscible.
Surfactants and bactericides, sync properties.
In addition to the important role of intermediaries between the chemical species, some surfactants add really innovative and one properties, based on organic multifunctional complex, can be found in TNS (Protec-4).
This particular surfactant promotes antimicrobial activity in a safe and efficient way to be incorporated in the formulations in order to not change the production process and thus bring a new property to the inks. In addition to being protected against possible degradation during the time of "shelf", the inks once they are applied and dried (film formation), will more than beautify the environment, they will create real barriers against proliferation microorganisms such as fungi and bacteria which are often pathogenic.
The paint containing the antimicrobial surfactant TNS can be used in various environments, protecting the treated surface from contamination that can bring health risks. Among the many possible applications stand out as trends for this type of functional ink: Wall child rooms, coatings for wood furniture, pet houses, wooden laminates, among various other applications where it is desired this innovation.