Categorie: Echipamente de protectie antichimica

Superfiltrul nanomask protejează împotriva ucigașelor invizibile(Superfilter nanomask protects from invisible killers )

Masca roman, dezvoltata de profesorul Wallace Leung de la Universitatea Politehnica din Hong Kong, este realizata din mai multe straturi de diferite tipuri de nanofibre, care filtreaza particule nanosized.
Stratarea nanofibrelor asigură o suprafață mare, îmbunătățind mișcarea naturală a particulelor și interceptarea acestora de către fibre. De asemenea, permite utilizatorilor să respire confortabil, deoarece aerul curge liber prin straturile multiple, fără o rezistență foarte mare.
De exemplu, încorporarea unui strat de dioxid de titan și a altor nanofibre compozite semiconductoare în mască transformă gazele poluante, cum ar fi oxidul de azot, la substanțe inofensive atunci când fibrele sunt expuse la lumină vizibilă chiar și în condiții de lumină în încăpere. De asemenea, încorporarea nanofibrelor de chitosan în mască poate oferi funcții antibacteriene atunci când fibrele devin umede de la transpirație

Posted: Jun 06, 2016

Superfilter nanomask protects from invisible killers

(Nanowerk News) The novel mask, developed by Professor Wallace Leung of The Hong Kong Polytechnic University, is made out of multiple layers of different types of nanofibres, which filter nanosized particles.
Layering the nanofibres provides a large surface area, enhancing the natural movement of particles and their interception by the fibres. It also allows users to breathe comfortably since air flows freely through the multiple layers without much resistance.
viruses
Conventional masks cannot effectively filter nanosized particles such as the influenza A, MERS and SARS viruses, which can cause serious infections, illness and even death. (Image : Abhijith Ar)
Conventional masks made from microfibres cannot effectively filter nanosized particles such as the influenza A virus, or the more seriously damaging MERS and SARS viruses, which can cause serious infections, illness and even death. Many Asian countries also deal with serious airborne particles from pollution and forest fires, which are too small to be filtered by conventional microfibre masks.
Different types of nanofibres can be used in some layers of the mask to provide additional functions. For example, incorporating a layer of titanium dioxide and other semiconductor composite nanofibres in the mask converts pollutant gases, such as nitrous oxide, to harmless substances when the fibres are exposed to visible light, even under room light conditions. Also, incorporating chitosan nanofibres in the mask can provide antibacterial functions when the fibres become wet from sweat, for example.
Dr Leung has also adapted the nanofibre filter for use in airplane and vehicle cabin ventilation systems. Both the nanomask and cabin ventilation filter have been internationally recognized, receiving a Gold Medal in 2014 from the 42nd International Exhibition of Inventions in Geneva and a Special Merit Award from the Romanian National Ministry of Education. Both technologies have been licensed to Avalon Nanofibre Ltd., which has immediate plans to develop and commercialize products based on these technologies to meet market needs.
Did you know?
The influenza A, SARS and MERS viruses range in size from about 80 to 140 nanometres in diameter. Ultrafine particulate matter suspended in the air originates from combustion and ranges from 10 to 100 nm in size. When these particles gather, they form larger particles several hundreds of nanometres in size and reflect visible light. This is what we know as “smog”. In comparison, the diameter of a human hair is about 100 microns or 100,000 nanometres.
Source: The Hong Kong Polytechnic University

Read more: Superfilter nanomask protects from invisible killers

Superfiltrul nanomask protejează împotriva ucigașelor invizibile(Superfilter nanomask protects from invisibile killers)

este realizată din mai multe straturi de diferite tipuri de nanofibre, care filtrează particule nanosizate.Măștile convenționale fabricate din microfibre nu pot filtra în mod eficient particule nanosimice, cum ar fi virusul gripal A sau virusurile MERS și SARS mai dăunătoare, care pot provoca infecții grave, boli și chiar moarte.

Superfiltru

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Construită din țesături cu proprietăți de 4 cm, Beyond Grey Ghost Light Jacket combină „durabilitatea unui softshell cu greutatea mai ușoară a unei jachete de mijloc” și integrează niște buzunare cu fermoar poziționate și poziționate, inclusiv buzunare de mână, piept buzunar

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