Antibacterial acrylate-urethane varnish containing nanometer components

Antibacterial acrylate-urethane varnish containing nanometer components
Introduction Application Properties Advantage Of Using Nanotechnology

Today, it is important to protect the exterior surfaces of various equipment and parts, cars, building facades and home and hospital appliances against harmful environmental factors such as moisture, chemicals and dust and all kinds of rays in the environment such as sunlight. Depending on the environment in which the equipment is used, it is possible for bacteria and germs to grow and proliferate and even become resistant to disinfectants. In hospitals, for example, some microorganisms become resistant to antibiotics and continue to grow and multiply.

Prevention of contamination of the surface of parts by microbes and bacteria can be done by applying antibacterial coatings containing nanometer component. For example, nanoparticles having high specific area react with the bacterial outer membrane, causing structural changes inside the bacterium and eventually destroying it. Nowadays, the use of nanoparticles as an additive in the manufacturing of coatings is considered as a way to obtain the mentioned properties.

  • Coating the building facade
  • Coating of hospital equipment
  • Coating water tanks and heating and cooling systems
  • Coating of equipment inside the ambulance
  • Anti-bacterial
  • Anti-humidity and waterproof
  • Resistant to chemical agents such as salts, fats
  • Transparent, colorless and glossy surfaces
  • Applicable to all horizontal, inclined and vertical surfaces
  • Washable with water and household detergents
  • Easy maintenance and low cost

The present product is a nanocrystalline polymer-based transparent lacquer, which has remarkable antibacterial properties against contaminants.

Antibacterial activity is an indicator of the ability of the product to eliminate the bacteria which are in contact with it, and is obtained from the logarithmic comparison of the number of bacteria present on the control sample and the produced sample after 24 hours of contact with the bacteria. According to the standard, when the anti-bacterial activity of the product is between 2 and 3, the term "effective" can be used, while if the antibacterial activity is greater than 3, it has a strong effect.

ExplanationsAntibacterial activity
Standard acceptable limit2 (equivalent to 99%)
Nano sample (S.aureus)2.24
Nano sample (E.coli)2.11

Referring to clause 6-4 of the National Iranian-ISO International Standard No. 80004-2, the product contains nanoplates and due to the impact of the nanometer sized component on the improvement of the properties this product has the potential to be placed in the field of nanotechnology.
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