Chinhu chikuru chemasikisi ndeyepolypropylene isiri-yakarukwa jira(inozivikanwawo sejira risiri-yakarukwa), iro rakatetepa kana rinonzwika sechigadzirwa chakagadzirwa kubva kumachira eshinda kuburikidza nekubatanidza, kusanganisa, kana mamwe maitiro emakemikari nemakanika. Masks ekuvhiya ekurapa anowanzo gadzirwa nemateyi matatu ejira risiri rakarukwa, anoti spunbond isiri-yakarukwa jira S, meltblown isiri-yakarukwa jira M, uye spunbond isiri-yakarukwa jira S, inozivikanwa seSMS chimiro; Iyo yemukati layer inogadzirwa neyakajairwa isiri-yakarukwa jira, rine ganda rinoshamwaridzana uye hunyoro hunotora mhedzisiro; Iro rekunze rakagadzirwa nemucheka usina mvura usina kurukwa, une basa rekuvhara zvinwiwa uye unonyanya kushandiswa kuvhara zvinwiwa zvakapfapfaidzwa nemupfeki kana vamwe; Iyo yepakati sefa layer inowanzo gadzirwa ne polypropylene melt yakapepereswa jira risiri rakarukwa iro rave electrostatically polarized, iro rinogona kusefa mabhakitiriya uye kuita basa rakasimba mukuvhara nekusefa.
Iyo otomatiki yekugadzira mask mutsara inovandudza zvakanyanya kugadzirwa kwemasiki. Mipumburu mikuru yemucheka wepolypropylene isiri-yakarukwa inochekwa kuita madiki madiki uye anoiswa pamutsetse wekugadzira mask. Muchina uyu unoseta kona diki uye zvishoma nezvishoma inotetepa uye inovaunganidza kubva kuruboshwe kuenda kurudyi. Iyo mask yepasi inotsikirirwa nehwendefa, uye maitiro akadai sekucheka, kumisa chisimbiso, uye kudzvanya anoitwa. Pasi pekushanda kwemichina yeatomatiki, zvinotora avhareji yemasekonzi 0.5 chete kuti mutsetse wekugadzira fekitori ugadzire mask. Mushure mekugadzirwa, masiki anoiswa disinfected ne ethylene oxide uye anosiiwa kuti agare kwemazuva manomwe asati aiswa chisimbiso, akaiswa mupepa, akaiswa mabhokisi, uye atumirwa kutengeswa.
Chinhu chikuru chemasikisi - polypropylene fiber
Iyo yekusefa layer (M layer) iri pakati pemasiki ekurapa ijira rakanyungudutswa resefa, iro rinonyanya kukosha repakati, uye chinhu chikuru i polypropylene inonyungudika yakavhuvhuta yakakosha zvinhu. Ichi chinyorwa chine maitiro e-ultra-high kuyerera, kuderera kuderera, uye nhete yemamolekyulu uremu kugovera. Iyo yakaumbwa sefa layer ine yakasimba kusefa, kudzivirira, kuvharisa, uye mafuta absorption zvivakwa, izvo zvinokwanisa kusangana neakasiyana mazinga ehuwandu hwefiber pachikamu cheyuniti uye nepamusoro penzvimbo yepakati layer yemasiki ekurapa. Toni imwe yekunyungudika kwepolypropylene fiber inogona kugadzira masiki ekudzivirira ekurapa angangoita 250000 polypropylene N95, kana 900000 kusvika miriyoni imwe yemasiki ekuvhiya anoraswa.
Chimiro chepolypropylene melt blown filter material inoumbwa neakawanda criss crossing fibers akaturikidzana munzira dzisina kurongeka, ane avhareji yefiber dhayamita ye1.5 ~ 3 μ m, ingangoita 1/30 yedhayamita yebvudzi remunhu. Iyo yekusefa michina yepolypropylene inonyungudika yakafefeterwa sefa zvinhu zvinonyanya zvinosanganisira zvinhu zviviri: mechanical barriers uye electrostatic adsorption. Nekuda kweiyo ultrafine fibers, hombe chaiyo nzvimbo, yakakwira porosity, uye diki avhareji pore saizi, polypropylene melt blown filter zvinhu zvine yakanaka bhakitiriya barriers uye kusefa mhedzisiro. Polypropylene melt blown filter material ine basa re electrostatic adsorption mushure me electrostatic kurapwa.
Saizi yenovel coronavirus idiki kwazvo, ingangoita zana nm (0.1 μ m), asi hutachiona hahugone kuvapo hwakazvimirira. Iyo inonyanya kuvepo mukuvanzika uye madonhwe kana kuhotsira, uye saizi yemadonhwe inenge 5 μ m. Kana hutachiwana hune madonhwe hunosvika pajira rakanyunguduka, hunenge huchishambadzwa nemagetsi pamusoro, huchidzivirira kupinda mukati mepakati pepakati nepakati uye kuwana chipingamupinyi. Nekuda kwekuti hutachiona hwakanyanya kunetsa kubvisa kubva mukucheneswa mushure mekubatwa neultrafine electrostatic fibers, uye kugeza kunogona zvakare kukuvadza kugona kwe electrostatic suction, rudzi urwu rwemask runogona kungoshandiswa kamwe chete.
Kunzwisisa kwePolypropylene Fiber
Polypropylene fiber, inozivikanwawo sePP fiber, inowanzonzi polypropylene muChina. Polypropylene faibha faibha yakagadzirwa nepolymerizing propylene seyakagadzirwa kuti igadzire polypropylene, uyezve ichiitwa dzakatevedzana yekutenderera maitiro. Mhando huru dzepolypropylene dzinosanganisira polypropylene filament, polypropylene pfupi fiber, polypropylene split fiber, polypropylene yakawedzera filament (BCF), polypropylene indasitiri shinda, polypropylene isiri-yakarukwa jira, polypropylene mudzanga tow, nezvimwe.
Polypropylene fiber inonyanya kushandiswa kumakapeti (carpet base uye suede), machira ekushongedza, machira efenicha, tambo dzakasiyana siyana, mambure ekuredza, mafuta anonwisa mafuta, zvekusimbisa zvekuvaka, zvekurongedza, uye machira emaindasitiri senge sefa jira, bhegi jira, etc. Polypropylene ultrafine fibers inogona kushandiswa kugadzira machira ehembe dzepamusoro; Iyo quilt yakagadzirwa nepolypropylene hollow fibers yakareruka, inodziya, uye ine elasticity yakanaka.
Kuvandudzwa kwePolypropylene Fiber
Polypropylene fiber imhando yefiber yakatanga kugadzirwa mumaindasitiri muma1960s. Muna 1957, Italy Natta et al. yakatanga kugadzirwa isotactic polypropylene uye yakawana kugadzirwa kwemaindasitiri. Nguva pfupi yapfuura, kambani yeMontecatini yakaishandisa pakugadzira polypropylene fibers. Muna 1958-1960, kambani yakashandisa polypropylene yekugadzira fiber uye yakatumidza kuti Meraklon. Zvadaro, kugadzirwa kwakatangawo muUnited States neCanada. Mushure me1964, polypropylene firimu rakapatsanura mafirita ekusunga akagadzirwa uye akagadzirwa kuita machira eshinda uye shinda yekapeti kuburikidza nefiriji fibrillation yakaonda.
Muma1970, iyo pfupi-renji yekutenderera maitiro uye michina yakavandudza kugadzirwa kwe polypropylene fibers. Panguva imwecheteyo, yakawedzera filament inoenderera yakatanga kushandiswa muindasitiri yekapeti, uye kugadzirwa kwepolypropylene fiber kwakakura nekukurumidza. Mushure me1980, kugadzirwa kwepolypropylene uye matekinoroji matsva ekugadzira polypropylene fibers, kunyanya kugadzirwa kwemetallocene catalysts, kwakavandudza zvakanyanya kunaka kwepolypropylene resin. Nekuda kwekuvandudzwa kweiyo stereoregularity (isotropy inosvika 99.5%), iyo yemukati mhando yepolypropylene fibers yakakwidziridzwa zvakanyanya.
Pakati pemakore ekuma1980, polypropylene ultra-fine fibers yakatsiva mamwe machira ekotoni emachira emucheka uye machira asina kurukwa. Parizvino, kutsvagisa uye kusimukira kwepolypropylene fibers kuri kushandawo munyika dzakasiyana siyana pasirese. Kuzivikanwa uye kuvandudzwa kweakasiyana fiber kugadzira tekinoroji kwakawedzera zvakanyanya minda yekushandisa ye polypropylene fibers.
Chimiro che polypropylene fibers
Polypropylene imorekuru hombe rine kabhoni maatomu seketani huru. Zvichienderana nekurongeka kwenzvimbo yemapoka ayo emethyl, kune matatu matatu-dimensional zvimiro: zvisingaite, iso yenguva dzose, uye meta yenguva dzose. Iwo kabhoni maatomu pacheni huru yepolypropylene mamorekuru ari mundege imwe chete, uye mativi avo emamethyl mapoka anogona kurongeka muakasiyana marongero enzvimbo pazasi uye pazasi pendege huru.
Kugadzirwa kwepolypropylene fibers kunoshandisa isotactic polypropylene ine isotropy yakakura kupfuura 95%, ine high crystallinity. Chimiro chayo ndecheni yenguva dzose inotenderera ine katatu-dimensional yenguva dzose. Iyo huru cheni yemorekuru inoumbwa nekabhoni atomu yakamonyoroka cheni pandege imwe chete, uye iwo emativi methyl mapoka ari kudivi rimwe chete reketani huru. Iyi crystallization haingori chimiro chenguva dzose chemacheni ega, asi zvakare ine cheni yakajairwa yakaturikidzana munzira chaiyo yekona yecheni axis. Iyo crystallinity yeprimary polypropylene fibers ndeye 33% ~ 40%. Mushure mekutambanudza, iyo crystallinity inowedzera kusvika 37% ~ 48%. Mushure mekupisa kurapwa, iyo crystallinity inogona kusvika 65% ~ 75%.
Polypropylene fibers inowanzo gadzirwa nenzira yekunyunguduka kutenderera. Kazhinji, mafibisi akatsetseka uye akatwasuka munzira yekureba, asina mitsetse, uye ane denderedzwa muchinjikwa-chikamu. Anorukwawo kuita faibha dzisina kujairika uye shinda dzakabatanidzwa.
Kuita maitiro e polypropylene fibers
Texture
Chinhu chikuru chepolypropylene magadzirirwo ayo akareruka, ane density ye 0.91g/cm ³, inoreruka kupfuura mvura uye 60% chete yehuremu hwedonje. Ndiwo akareruka density akasiyana pakati peakajairwa makemikari fibers, 20% yakareruka pane naironi, 30% yakareruka pane polyester, uye 40% yakareruka pane viscose fiber. Inokodzera kugadzira zvipfeko zvemitambo yemvura.
Zvinhu zvemuviri
Polypropylene ine simba guru uye kureba kwekutsemuka kwe20% -80%. Simba rinoderera nekuwedzera kwekushisa, uye polypropylene ine yakakwirira yekutanga modulus. Yayo elastic kudzoreredza kugona kwakafanana nenylon 66 uye polyester, uye nani pane acrylic. Kunyanya, iyo yekukurumidza elastic kudzoreredza kugona kwakakura, saka polypropylene jira rinowedzera kusapfeka. Polypropylene jira harina kukombama, saka rinogara, saizi yembatya yakadzikama, uye haisi nyore kuremara.
Kutora hunyoro uye kuita kwedhayi
Pakati pemafayibha ekugadzira, polypropylene ine yakaipisisa kunyudza hunyoro, iine inenge zero mwando inodzoka pasi pemamiriro emuchadenga. Nokudaro, simba rayo rakaoma uye rakanyorova uye simba rekutsemuka rinenge rakaenzana, zvichiita kuti rive rakanyatsokodzera kugadzira mambure ekuredza, tambo, jira resefa, uye disinfectant gauze yemishonga. Polypropylene inogara kune static magetsi uye pilling panguva yekushandiswa, ine yakaderera shrinkage rate. Mucheka uri nyore kugeza uye kuoma nokukurumidza, uye wakaoma. Nekuda kwekushata kwayo kunyorova uye kunyura kana yakapfekwa, polypropylene inowanzosanganiswa nefibers ine hunyoro hwepamusoro kana ichishandiswa mumachira ehembe.
Polypropylene ine yakajairika macromolecular chimiro uye yakakwirira crystallinity, asi inoshaya mapoka anoshanda anogona kusunga nemamorekuru edhayi, zvichiita kuti kudhaya kuve kwakaoma. Madhayi emazuva ose haakwanise kuupenda. Kushandisa madhayi akaparadzirwa kudhayi polypropylene kunogona chete kuguma nemavara akareruka uye kushata kwemavara. Kuvandudza kuita kwekudhaya kwepolypropylene kunogona kuwanikwa kuburikidza nenzira dzakadai segraft copolymerization, yepakutanga yemvura coloring, uye simbi komputa gadziriso.
Chemical properties
Polypropylene inopikisa zvakanyanya kumakemikari, kutapukira kwezvipembenene, uye mold. Kugadzikana kwayo kunopesana neasidhi, alkali, uye mamwe makemikari ejenti akakwirira kune mamwe mafivha ekugadzira. Polypropylene ine kumira zvakanaka kumakemikari ekuora, kunze kweiyo concentrated nitric acid uye concentrated caustic soda. Iine kumira kwakanaka kune acid uye alkali, ichiita kuti ive yakakodzera kushandiswa sesefa zvinhu uyekurongedza zvinhu.Zvisinei, kugadzikana kwayo kune organic solvents kune zvishoma zvishoma.
Kudzivisa kupisa
Polypropylene is thermoplastic fiber ine yakaderera kupfava poindi uye kunyungudika kupfuura mamwe mafiibhi. Iyo tembiricha yekunyorovera i10-15 ℃ yakaderera pane inonyungudika, zvichikonzera kushomeka kwekupisa. Munguva yekudhaya, kupedzisa, uye kushandiswa kwepolypropylene, zvinofanirwa kutarisisa kutonga kwekushisa kudzivirira deformation yepurasitiki. Kana yapiswa munzvimbo dzakaoma (senge tembiricha dzinopfuura 130 ℃), polypropylene inotsemuka nekuda kweoxidation. Nokudaro, anti-aging agent (heat stabilizer) inowanzowedzerwa mukugadzirwa kwepolypropylene fiber kuvandudza kugadzikana kwepolypropylene fiber. Asi polypropylene ine kupikisa zviri nani kune unyoro uye kupisa. Birai mumvura inopisa kwemaawa akawanda pasina deformation.
Zvimwe Kuita
Polypropylene ine chiedza chisina kunaka uye kusagadzikana kwemamiriro ekunze, inowanzochembera, haidziviriri ku ironing, uye inofanira kuchengetwa kure nechiedza nekupisa. Nekudaro, iyo anti-kuchembera pfuma inogona kuvandudzwa nekuwedzera anti-aging agent panguva yekutenderera. Pamusoro pezvo, polypropylene ine yakanaka yekuvharisa magetsi, asi inowanzoitika kune static magetsi panguva yekugadziriswa. Polypropylene haisi nyore kupisa. Apo shinda dzacho dzinopera ndokunyunguduka mumurazvo womoto, murazvo wacho unogona kudzima woga. Kana yapiswa, inoumba spare hard block ine kakunhuhwirira asphalt.
Dongguan Liansheng Non woven Technology Co., Ltd.yakavambwa muna Chivabvu 2020. Ibhizimusi rekugadzira jira rakakura risingarukwe rinobatanidza tsvakiridzo nekusimudzira, kugadzira, uye kutengesa. Inogona kuburitsa mavara akasiyana-siyana ePP spunbond machira asiri akarukwa ane hupamhi husingasviki 3.2 metres kubva pa9 gramu kusvika 300 magiramu.
Nguva yekutumira: Oct-14-2024