Chokutanga pane zvose, themultilayer co-extrusionresistance diaphragm ifirimu repurasitiki.Mumunda wezvigadzirwa zvepurasitiki, tinowanzo taura nezvezvigadzirwa zvepurasitiki zvakafuratira zvine ukobvu zvisingasviki 0.2 mm semafirimu epurasitiki, ayo ane ukobvu pakati pe0.2 ne0.7 mm semapepa epurasitiki uye ayo ane ukobvu kupfuura 0.7 mm semahwendefa.Multilayer co-extrusion resistance diaphragm ichave neimwe gasi barriers performance.Chipingamupinyi apa chinoreva kugona kudzivirira kwezvigadzirwa zvepurasitiki (midziyo, mafirimu) kurwisa magasi madiki emamorekuru uye kunhuhwirira.Isu tinowanzo shandisa gasi permeability kuyera kupera kwezvigadzirwa zvepurasitiki.PE, PP uye mamwe mapurasitiki akakura ane gasi permeability values, ndiko kuti, gasi permeability yakashata, nepo PA, PVDC, EVOH uye zvimwe zvinhu zveresin zvine hutsika hwakaderera hwegasi kupfuura mapurasitiki akajairwa, uye gasi kupera kwakanaka.Naizvozvo, isu kazhinji tinodaidza iyomultilayer coextrusion firimuine inokwana imwe resin zvinhu zvePA, PVDC uye EVOH seyakawanda coextrusion resistance diaphragm.PE, PA, TIE, EVOH uye mamwe maresheni anogona kushandiswa kurongedza vacuum yezvigadzirwa zvemukaka, jamu, zvigadzirwa zvenyama, nezvimwe.
Multilayer co-extruded mafirimukazhinji vanotora ABCBA5 layer symmetrical chimiro, ine PA kana EVOH sechivhariso layer uye polyethylene sechisimbiso chisimbiso.Iyo yekunamatira resin inoshandiswa kupatsanura iyo isina kubatana barriers layer uye thermal seal layer.PA kana EVOH inonyatsonzwa kunyorova, yakachengetedzwa nepolyethylene layer, uye yakanakisa okisijeni chipingamupinyi kuita kwayo kwakagadzirwa zvizere.Kazhinji, chimiro chemultilayer co-extruded firimuzvinoenderana nezvinodiwa zvemufirimu.Pachimiro chekusangana nezvinodiwa zvemaitiro, musanganiswa wemapolymer akasiyana anogona kusangana nezvinodiwa zvekutakura zvinhu senge barriers, kupisa chisimbiso, kusimba kwemuviri, kupisa kwekupisa, kuchinjika kwezvakatipoteredza, yechipiri kugadzirisa maitiro uye kuwedzera kwekuchengetedza uye hupenyu hwesherufu.Kubva pakuona kwezvido zvekushanda, musanganiswa wemapolymer mashanu wakakwana.Zvisinei,iyo co-extruded composite firimuane manomwe, mapfumbamwe, gumi nerimwe kana kupfuura akaturikidzana akaiswa pamusika izvo zvichiita kuti ive maitiro uye kukura nekukurumidza.Iyo dhizaini yedhizaini ye-co-extruded firimu inodiwa zvishoma nezvishoma kuti iwane yakanaka mamiriro ekubatanidza basa, tekinoroji, mutengo, kuchengetedzwa kwezvakatipoteredza, kuchengetedzwa uye yechipiri kugadzirisa.
1. Kuenzanisa kwemari
Kushandisa mapolymer akachipa pamusoro panzvimbo yemapolima anodhura anogona kuderedza mutengo wezvigadzirwa uye ane kupisa-kuvharisa kuita uye yakakwirira hunyoro kuramba kweionic chain polymers.Kune zvigadzirwa zvine chipingamupinyi chakafanana uye kupisa-chisimbiso-kugona 7-layer co-extrusion blown firimu inodhura kupfuura 5-layer firimu.
2. Chipingamupinyi
Kushandisa mapolymer maviri akasiyana pachinzvimbo chepolymer imwe chete pane barriers layer inogona kuvandudza zvakanyanya hupfumi hwayo.Semuenzaniso, kusanganiswa kweEVOH layer uye yakajairwa naironi zvinhu haingogone kuchengetedza kupinda kwePA, asi zvakare kuwedzera simba reEVOH nekuvandudza kutsemuka kweEVOH nekuti iyo EVOH layer inoiswa pakati pezvikamu zviviri zvePA amine, zvichiita kuti ive. firimu rine chipingamupinyi chakakwirira, nepo iyo shanu-layer co-extrusion firimu haigone kuwanikwa.Iyo yakawedzera mutengo wekuwedzera EVOH inogona kuwedzerwa kune yakazara kushandiswa kwechimiro.Iyo okisijeni yekufambisa kweiyo shanu-layer co-extruded firimu ine 20% PA chimiro 3.5 zvikamu, asi pasi pemamiriro akafanana, chiyero chekufambisa kweEVOH chakawedzerwa kune manomwe-layer firimu ndeye 0.13 zvikamu.
3. Mutswe kuramba
Izvo zvimiro zvePA co-extruded mafirimu ane mamwe maseru anogona kuvandudzwa.Semuenzaniso, kushandiswa kweimwe adhesive layer inogona kuvandudza kuvharidzira kuita kwefirimu nekuwedzera mvura vapor barrier effect yefirimu.Imwe bhenefiti inowanikwa panguva imwe chete ndeyekuti inogona kuita kuti firimu rive rakapfava, rinzwe kunaka uye rive rakanaka rinoramba richitsemuka.
Nekuenderera mberi kwekuenderera mberi kwepolymer synthesis tekinoroji, mapolymer matsva ane akasiyana emuviri uye mekiniki zvivakwa anogona kushandiswa zvakanyanya kusangana nezvinodiwa zvekurongedza.Basa uye chimiro chemultilayer co-extruded composite substrate firimuichava nekushanduka kukuru uye hupfumi.Kuburikidza nekushandiswa uye kuvandudzwa kwemidziyo yekuumba uye tekinoroji, yakasanganiswa neyakasarudzika uye inoshanda dhizaini yekuumbwa kwemubatanidzwa, vagadziri vemafirimu vanozoita shanduko mukutsvaga nekufunga maitiro epfungwa dzekusiyana kwemabasa ekurongedza, kurongeka kwechimiro chekurongedza, uye maximization yekurongedza mabhenefiti.
Nguva yekutumira: Kubvumbi-17-2023