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Chii chinonzi anti-virus musimboti wemasiki? Kubva pane micro point yekuona kukupa iwe nyanzvi mhinduro

Nguva:2020-04-03 Hits:

Kubuda kamwe kamwe kwehutachiona, kuitira kuti antivirus masks ive nyaya inopisa kwechinguva. Kune akawanda marudzi emasiki pamusika, pakati peiyo masks ekuvhiya uye N95 giredhi masiki anogona kupa yakanaka anti-virus maitiro. Saka zvinoita sei?

Masks ekuvhiya anowanzo kupatsanurwa kuita zvidimbu zvitatu :(yemukati layer) hygroscopic layer, (layer yepakati) core filter layer uye (outer layer) water barrier layer.

Kuenzaniswa nemasikisi ekuvhiya, N95 masks akagadziridzwa muchimiro uye ane mamwe matinji mupakati kusefa layer. Pamusoro pe, vagadziri vakaita se3M uye honeywell vanosimudzira kusefa kwefiber kuburikidza ne electrostatic kurapwa, saka maitiro ekudzivirira emasikisi ari nani.

Kiyi yekubudirira kwemasks maviri aya iri muchokwadi chekuti core filtration layer inoumbwa nedhizaini rejira rakanyungudutswa risina kuruka., rinova firimu rakagadzirwa neakawanda crisscross fibers munzira isina kujairika uye rakagadzirwa ne polypropylene. Iyo dhayamita yefibers inotangira kubva 0.5 ku 10 m.

Sezvinoonekwa kubva pakuongorora ma electron microscope, mikaha iri pakati pemafiber e-fusion-blown nonwovens ichiri yakakura, saka inosefa sei mavhairasi kubva kunharaunda? Kunyangwe novel coronavirus idiki muhukuru, nezve 100 nm, utachiona hahukwanisi kuvapo hwakazvimiririra, uye nzira yayo yekutapurira inonyanya kuvharwa uye madonhwe ekuhotsira, uye saizi yemadonhwe inengnm5 nm. Fusion-blown nonwovens inogona kusefa kuburikidza nemhando dzakasiyana dzemasefa, semadonhwe, uye fiber voids inoshanda sesefa, asi iyi ingori imwe yekudyidzana kwakanyanya.


Zvichienderana nehukuru hwemadonhwe uye kumhanya kwemhepo, iyo fiber inogona kutora madonhwe ane hutachiona kuburikidza nenzira dzakasiyana-siyana:

· kunetial kudhumhana -- apo chimedu chihombe chine inertia hombe chinosangana nefiibhi yekusefa, haikwanise kushandura nzira nekuda kwekutadza kwayo, saka icharova fiber uye inonamatira kune fiber.

· interception -- kana zvimedu zvichifamba nemumhepo uye zvoitika kuti zvinosangana nefiber pamusoro, zvidimbu zvepakati nepakati zviri nyore kufamba nemhepo zvinosangana nefiber fiber uye zvinobatwa nefiber..

· diffusion -- apo saizi yechikamu idiki zvakanyanya, inodzorwa nekufamba kwezvimedu zvisina tsarukano (Brownian kufamba kwezvidimbu zvidiki), gwara rekufamba rakapatsanurwa kubva kunzira yekufamba kwemhepo, uye inobatwa kana yabata fiber.

· electrostatic kukwezva -- kana paine static charge pane fiber, iyo electrostatic charge pane fiber inoburitsa electrostatic adhesion kune chidimbu.

Kuti kudyidzana uku kuitike, iyo dhayamita yefiber inodiwa kuti ive shoma sezvinobvira, nepo dhayamita yefaibha iri munyunguduka-inoputika nonwovens iri pakati 0.5 uye 10 m, nenzvimbo hombe chaiyo, compact kuronga uye yakanaka kusefa kuita. Mune ese masiki ekuvhiya uye N95 masks, Fused pfapfaidzo jira rinoshandiswa seyepakati sefa layer, saka ine yakanaka kusefa maitiro pamadonhwe kana airgel ine hutachiona.

Nekuda kwehuwandu hukuru hwematanho eakanyunguduka-akavhuvhuta asina kuruka anoshandiswa muN95 masks, Kunyanya kushandiswa kweN95 masks kuchapedza kunyunguduka-kuvhuvhuta nonwovens zviwanikwa nekukurumidza, zvichikonzera kushomeka kwakanyanya kwemasks. Zvinoenderana neakakodzera kugadzira chirimwa, mutengo wezvisingawoki zvinonyungudutswa uri kukwira uye midziyo iri kushomeka. Naizvozvo, isu tinodaidzawo kuvaverengi kuti vatevedzere kurudziro yeacademician zhong nanshan uye kushandisa masiki ekuvhiya muhupenyu hwezuva nezuva., kuitira kudzikisira kudyiwa kwemasiki eN95 uye kusiya zviwanikwa zvekugadzira kune vashandi vekurapa vanoshaya uye vekwavo munzvimbo dzakakanganisika..



(source: fenner electron maikorosikopu)