Visco-elastic coating

For the transport of heavy ions to a solid surface coated with an adherent water film, like aluminium oxide, the visco-elastic properties of electric field forces and the concentration of heavy ions may be important for the rate of adsorption. For this reason we need information not only on relaxations restricted to a surface of an extended liquid, but also on the adherent water layer at the adsorbents. The last issue may be a bridge to the thermodynamics and flow properties of thin liquid films have been studied by some excellent research groups. 

J.F. Doddema. Self healing visco-elastic anti-corrosion system for critical infrastructural objects such as oil and gas pipelines. Paint Coating News, 2011, 7, 74—78. 

Radiation curable technology involves the usage of 100% solid material and thus does not require solvent-based adhesive compositions. The substrate is coated with a low-viscosity liquid resin using conventional techniques. With increase in viscosity, the development of cross linking as well as visco-elastic properties is accelerated by exposing the moving substrate to a radiant energy source. 

These polydiene-, polyacrylate- or silicone-based adhesives are generally formulated products (with waxes in order to lower the glass transition temperature, and tackifying resins to provide tack), used as self-adhesives, coated to materials such as paper, films, and polymer tapes, etc. The term Pressure-Sensitive Adhesive relates to the fact that pressure from a linger on the rear of the material to be affixed is all that is required in order to allow the adhesive mass to wet the substrate sufficiently and to adhere to it more or less strongly. Depending on the visco-elastic properties and the adhesion forces developed at the interface, various behaviors can be reached from nonpermanent in the case of Post-it to semipermanent in the case of dressings. 

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