Název projektu:
Hydrophobic and Lipophobic Coating for Metallic and Mineral Surface (09 FR 34k3 2S5J)
Popis:
A French company has developed a new way to coat metallic and mineral surface in a rapid and efficient process easily scalable to industry. Bisphosphonic perfluoropolyether used to coat surfaces to form hydrophobic and lipophobic self assembled monolayers. These coatings are obtained by dipping the surface in an aqueous media on the contrary of silanes or phosphonates layers that are water sensitive. Industrials acting in lubrication, anti-soiling, anti-graffiti, anti-corrosion are sought.
Požadavky na partnera:
A French company has developed a new way to coat metallic surfaces in a rapid and efficient process which is easily up-scalable to industry.
Existing solutions for forming self assembled monolayers (SAM) able to change the characteristics of materials in industrial applications are expensive and their processes are very sensitive to the environment.
Our coating technology relies on novel molecules that form SAM on many different surfaces mostly metallic or mineral such as, for example titanium, aluminum, steel, silicon or glass.
The coating molecules are composed of 2 extremities:
-one extremity is a bisphosphonic group (BP) that is an anchor that bind oxide groups present onto the surface.
-the other extremity brings the new functionality to the surface; its chemical structure depends on the nature of targeted function.
The coating process with bisphosphonic molecules solves many technical problems of existing SAM deposit. The main process can be described in 3 simple steps that make its industrial application easier than existing monolayers technologies:
- oxidation of the substrate (natural, thermal or chemical)
- dipping in BP solution (aqueous or organic)
- dehydration of the substrate (vacuum or baking) and rinsing.
Different parameters that influence the deposition of a dense monolayer onto the substrate have been optimized (oxidation, adsorption kinetic, solvents) depending on the nature of the substrate (metallic or mineral).
Characteristics of SAM composed of perfluororpolyether linked to a bisphosphonate moiety:
- the surface energy is evaluated at 11.4 mJ/m² for silicon substrate and is less than 10 mJ/m² for titanium or stainless steel substrates. As a comparison, PTFE, known to have one of the lowest surface energy has a higher surface dispersive free energy (20.35 mJ/m²) than perfluororpolyether linked to a bisphosphonate.
- Bisphophonates coatings are easy to deposit but also resistant to deleterious conditions (temperature up to 200°C, moisture, pH from 2 to 10).
In this offer, SAM composed of a perfluororpolyethers linked to a bisphosphonate presents hydrophobic and lipophobic properties. The SAM formed keep their efficacy in deleterious conditions such as long lasting water immersion, pH, and autoclaving.
All these properties make this molecule an innovative way to protect metallic surfaces from soiling, sticking, and corrosion.
Innovative Aspects:
This is a new way to coat metallic surfaces in a rapid and efficient process which is easily up scalable to industry. Bisphosphonates, used to coat surfaces, are easy-use because they form hydrophobic and lipophobic SAMs only by dipping the surface in an aqueous media on the contrary of silanes or phosphonates layers that are water sensible.
A perfluororpolyether linked to a bisphosphonate moiety, has tremendous characteristics. This molecule is soluble in water and can render the surface of stainless steel, titanium or silicon substrates much more hydrophobic and lipophobic than PTFE within a few minutes. The SAMs formed with it can resist to deleterious conditions such as long lasting water immersion, pH and autoclaving.
All these properties make this molecule an innovative way to protect metallic surfaces from soiling, sticking, and corrosion.
Existing solutions for forming self assembled monolayers (SAM) able to change the characteristics of materials in industrial applications are expensive and their processes are very sensitive to the environment.
Our coating technology relies on novel molecules that form SAM on many different surfaces mostly metallic or mineral such as, for example titanium, aluminum, steel, silicon or glass.
The coating molecules are composed of 2 extremities:
-one extremity is a bisphosphonic group (BP) that is an anchor that bind oxide groups present onto the surface.
-the other extremity brings the new functionality to the surface; its chemical structure depends on the nature of targeted function.
The coating process with bisphosphonic molecules solves many technical problems of existing SAM deposit. The main process can be described in 3 simple steps that make its industrial application easier than existing monolayers technologies:
- oxidation of the substrate (natural, thermal or chemical)
- dipping in BP solution (aqueous or organic)
- dehydration of the substrate (vacuum or baking) and rinsing.
Different parameters that influence the deposition of a dense monolayer onto the substrate have been optimized (oxidation, adsorption kinetic, solvents) depending on the nature of the substrate (metallic or mineral).
Characteristics of SAM composed of perfluororpolyether linked to a bisphosphonate moiety:
- the surface energy is evaluated at 11.4 mJ/m² for silicon substrate and is less than 10 mJ/m² for titanium or stainless steel substrates. As a comparison, PTFE, known to have one of the lowest surface energy has a higher surface dispersive free energy (20.35 mJ/m²) than perfluororpolyether linked to a bisphosphonate.
- Bisphophonates coatings are easy to deposit but also resistant to deleterious conditions (temperature up to 200°C, moisture, pH from 2 to 10).
In this offer, SAM composed of a perfluororpolyethers linked to a bisphosphonate presents hydrophobic and lipophobic properties. The SAM formed keep their efficacy in deleterious conditions such as long lasting water immersion, pH, and autoclaving.
All these properties make this molecule an innovative way to protect metallic surfaces from soiling, sticking, and corrosion.
Innovative Aspects:
This is a new way to coat metallic surfaces in a rapid and efficient process which is easily up scalable to industry. Bisphosphonates, used to coat surfaces, are easy-use because they form hydrophobic and lipophobic SAMs only by dipping the surface in an aqueous media on the contrary of silanes or phosphonates layers that are water sensible.
A perfluororpolyether linked to a bisphosphonate moiety, has tremendous characteristics. This molecule is soluble in water and can render the surface of stainless steel, titanium or silicon substrates much more hydrophobic and lipophobic than PTFE within a few minutes. The SAMs formed with it can resist to deleterious conditions such as long lasting water immersion, pH and autoclaving.
All these properties make this molecule an innovative way to protect metallic surfaces from soiling, sticking, and corrosion.
Obchodní firma/fyzická osoba:
Technologické inovační centrum s.r.o.
Sídlo/Místo podnikání:
Kontaktní osoba:
Ing. Lenka Kostelníková Phd.
Email:
Telefon:
+420 739 570 792
