Copper As Antifungal and Antimicrobial
Copper has been exploited for health purposes since ancient times. Egyptian and Babylonian soldiers would sharpen their bronze swords (an alloy of copper and tin) after a battle, and place the filings in their wounds to reduce infection and speed healing. Copper was also used to cure medical problems in ancient China and India and is an important component of Ayurveda medicine today
Fantasilandia in Chile, one of Latin America’s largest theme parks, has replaced its most frequently touched surfaces with copper to help reduce the spread of germs and protect the health of its visitors. But why? Because copper and its alloys exhibit impressive antibacterial, antiviral and anti-fungal properties.
Water stored in copper utensils is known to kill microbes and viruses, this is a common practice in Indian Households, recently some of water purifier makers have come up eith filters/RO’s containing copper for killing microbes in water.
The process involves the release of copper ions (electrically charged particles) when microbes, transferred by touching, sneezing or vomiting, land on the copper surface. The ions prevent cell respiration, punch holes in the bacterial cell membrane or disrupt the viral coat, and destroy the DNA and RNA inside.
Copper Powder Cold sprays can easily be used in public health in hospitals and medical environments, for example, doors knobs and other frequently touched surfaces in different facilities can be cold sprayed with copper powder containing paints.
Copper wool is also used in ventilators for similar applications. Further Copper containing material can be used in solid surfaces for making table tops, kitchen cabinets, sinks, platforms.
Copper also has the ability to destroy viruses, such as influenza viruses, noroviruses or human immunodeficiency virus (HIV).
Studies can be done to use Copper impregnation in respiratory protective face masks, clothing’s to get rid of viruses which spreads inhuman by respiratory duct
Copper impregnation clothing’s can be used for contact killing of virus and bacteria when these land on cloth while interaction through droplets from infected person.
We are ready to provide Free Copper powder samples for development of Antimicrobial and Antifungal like Covid 19 applications for betterment of human life.
Metallic fibers have emerged as the dominant fibers in the manufacturing of semi-metallic brake pads.
These fibers are produced by pulling of metallic wires surface against serrated knives to machining of special alloys to get chips of metal having shape close to fibers or by chopping of thin metallic fibers. Special metallic fibers having very consistent length and diameter are also made by use vibrated tool for machining. Also thin metallic shape articles are use to machine fibers.
Recycled metallic wires and chips are also used to get cheaper metallic materials suitable for brake pads applications.
We at SMP have gradually developed and added all of above processes to manufacture metallic fibers and chips over the period of last ten years. Now we can cater to almost all the needs of our customers regarding metallic fibers and chips.
Regardless of the method of production, metallic fibers, chips are added to the friction composites to improve structural reinforcement, wear resistance, heat dissipation of lining and pads.
Metallic fibers produced by us acts at the surface of a friction material composite in the formation of load carrying plateaus and provide wear enhancement, as well as increase in the real contact area, Copper containing Fibers provide excellent wear resistance while maintaining the friction level at elevated temperatures, reduction in disc wear , better thermal conductivity, Being fiber these increases structural reinforcement, sharp edges keeps brake disc clean. Further copper acts as lubricant at elevated temperatures.
Steel fibers are perhaps the most commonly used fibers for semi-metallic and low steel formulations, but Copper, Brass, Bronze fibers are also used in the other NAO formulations. These helps in providing wear resistance while maintaining the friction level during operation at elevated temperatures.
These non ferrous metallic fibers are better than steel fibers as the do not wear the mating member as well, there sharp edges keeps brake disc clean.
Copper based fibers enhances thermal conductivity, , reduces wear in friction material and rotor, stabilizes coefficient of friction, enhances fade resistance, fiber morphology increases strength, controls direction of heat dissipation , improves NVH.
These fibers are extensively used in passenger four wheel automobiles, now there use in commercial vehicle pads is also increasing. Further use of these materials in railway and metro train friction material is also in trial phase.
In two wheeler segment also brake shoes are replaced with brake pads, Aluminum powder is used in brake shoes but aluminum undergoes exothermic reactions, thus increasing interface temperatures leading to hot spot formation, this further reduces friction coefficient. Further Aluminum oxides formed due to such reaction are of abrasive nature which increases wear of drum/rotor. With increase in speeds, heat generated also increases so Copper based friction material are finding use in two wheeler friction materials also.