Ndezvipi zvikonzero zvesainzi yezvinhu zvinoshandiswa pakushandisa mhando dzakasiyana dzezvinhu?masiki?Kuwedzera kune michina yekudzivirira munhu (PPE), ndezvipi zvinhu zvepolymer zvakakosha uye maitiro ekugadzira anobatanidzwa?
Masiki anogadzirwa nezvinhu zvipi?
Sei paine musiyano mukuru pakati pemasiki akasiyana? Pandainyora, ndakacheka mask yecharcoal ine layer ina inoshandiswa murabhoritari kuti ndione kuti yakaita sei mukati:
Sezvatinoona, mask yakakamurwa kuita zvikamu zvina. Zvikamu zviviri zvekunze zvinhu zviviri zvakafanana nejira, chikamu chitema i activated carbon, uye chimwe chakaoma, chakaita se napkin. Makeup diki mushure mekutsvaga ruzivo kuti unzwisise, pamusoro pepakati pechikamu che activated carbon, zvimwe zvikamu zvitatu imhando yezvinhu zvinonzi non-woven fabric. Non-woven Fabric (zita rechirungu: non-woven Fabric kana Nonwoven cloth) inonziwo Nonwoven Fabric, iyo yakagadzirwa neshinda dzakatungamirwa kana kuti dzisina kurongeka. Inonzi jira nekuda kwechitarisiko chayo uye zvimwe zvinhu zvayo.
Kune mhando dzakawanda dzemaitiro ekugadzira machira asina kurukwa, anosanganisira maitiro espunbonded, maitiro ekupisa spray, maitiro ekupisa anotenderedza, maitiro ekuspuna nezvimwewo. Mafiber asina kubikwa anogona kushandiswa anonyanya kushandiswa polypropylene (PP) uye polyester (PET). Pamusoro pezvo, kune nylon (PA), viscose fiber, acrylic fiber, polypropylene fiber (HDPE), PVC, nezvimwewo.
Parizvino, machira mazhinji asina kurukwa anogadzirwa nenzira ye spunbonded mumusika. Nzira iyi inogadzira continuous filament nekubvisa nekutambanudza polymer, wobva waisa filament munet, uye fiber net inozobatanidzwa yoga, thermal bonding, chemical bonding kana mechanical reinforcement, kuitira kuti fiber net ive isina kurukwa. Machira asina kurukwa ane spunbonded ari nyore kuona. Kazhinji, panotenderera machira asina kurukwa ane spunbonded akaita sedhaimani.
Imwe nzira yakajairika yekugadzira isina kurukwa inonzi needling non-woven jira. Musimboti wekugadzira ndeyekuboora fiber net kakawanda nemipendero ine minzwa nemipendero yechikamu chetriangle (kana zvimwe zvikamu). Kana barb ichipfuura nepanetwork, inomanikidza pamusoro nemukati menetwork kupinda munetwork. Nekuda kwekukweshana kuri pakati pefibers, network yekutanga ine fluffy inomanikidzwa. Sezvo tsono ichibuda munetwork, tambo dzinosiyiwa nebarbs, zvekuti tambo zhinji dzinobatwa munetwork uye hadzigone kudzokera kumamiriro adzo ekutanga ane fluffy. Mushure mekuboora kakawanda, fiber bundles dzakawanda dzinoboorwa mufiber net, uye fibers dziri munetwork dzinobatanidzwa, nokudaro dzichigadzira needling nonwoven zvinhu zvine simba uye ukobvu.
Asi maburi emachira maviri asina kurukwa akakura zvakanyanya zvekuti haakwanise kupatsanura mavhairasi ari padanho re100nm.
Saka, chikamu chepakati chemasiki yekuvhiya chinogadzirwa nejira risingarukwe nespray inonyungudutsa. Kugadzirwa kwejira risingarukwe rinonyungudutsa rinonyungudutsa kutanga nekuisa polymer masterbatch (inowanzova polypropylene) muextruder uye rinonyungudutsa muextruder patembiricha inosvika 240℃ (yePP). Kunyunguduka kunopfuura nepapombi yekuyera uye kusvika kumusoro wejekiseni. Kana polymer ichangobva kugadzirwa yaburitswa kubva muspinneret, mugumo wemhepo yakamanikidzwa INOBATANA papolymer uye inokwevera filament inopisa kusvika 1 ~ 10 m mudhayamita padanho remhepo rakakwirira kupfuura ruzha (550m/s). Zvichienderana nehunhu hwayo hwepanyama, mambure akadaro anonzi microfiber net. Aya mafiber akapfava ane capillarity yakasiyana anowedzera huwandu nenzvimbo yepamusoro yemafiber payuniti imwe neimwe, zvichiita kuti machira akanyunguduka ave nehunhu hwakanaka hwekusefa, kudzivirira, kudzivirira uye kunyungudutsa mafuta. Inogona kushandiswa mumhepo, zvinhu zvekusefa mvura, zvinhu zvekuparadzanisa, machira emasiki nedzimwe nzvimbo.
Maitiro ekusefa emasiki ekurapa ndeeBrownian diffusion, interception, inertial collision, gravity settlement uye electrostatic adsorption. Zvina zvekutanga zvese zvinhu zvepanyama, izvo zviri hunhu hwemachira asina kurukwa anogadzirwa ne melting spray. Hunhu hwekusefa hunosvika 35%. Izvi hazvikwani zvinodiwa nemasiki ekurapa. Tinofanira kuita stationary treatment pachinhu chacho, kuita kuti fiber inotakura electric charge, uye kushandisa electrostatic kubata aerosol iri muCoronavirus itsva.
Aerosol itsva yeCoronavirus (aerosol) yakabatwa nekunyungudika kwecoronavirus kutsva kuburikidza nesimba re coulomb re fiber yakachajwa. Nheyo ndeyekuita kuti pamusoro pezvinhu zvekusefa pave pachena, kugona kwezvikamu kunobata kwakasimba, uye huwandu hwechaji hunowedzera, kunyungudika kwezvikamu uye polarization effect kwakasimba, saka firita yechinhu chisina kucheneswa chakanyungudika, chinofanira kupfuudzwa kuti chishande nacho, hachigone kuchinja pasi pepfungwa yekuti hachigoni kufema, kuwana 95% yekusefa, kuti chishande kurwisa hutachiona.
Mushure mekutsvagurudza, ndava nekunzwisisa kwakawanda nezvekugadzirwa kwemasiki iri muruoko rwangu: chikamu chekunze chakagadzirwa nejira risina kurukwa rakaboorwa netsono rakagadzirwa nePP, uye chikamu chepakati ichikamu chekabhoni chakagadziriswa uye chikamu chejira rePP melt spray.
Nguva yekutumira: Nyamavhuvhu-29-2020