PP / PE / PA / PETG / EVOH Urupapuro rwinshi rwa bariyeri Urupapuro rwo gufatanya
Ibyingenzi bya tekinike
| Icyitegererezo | Icyitegererezo | Ubugari bwibicuruzwa | Ubunini bwibicuruzwa | Igishushanyo mbonera gisohoka |
| Ibice 7 bifatanije | 120/75/50/60/75 | 800-1200mm | 0.2-0.5mm | 500-600kg / h |
| Ibice 9 gufatanya | 75/100/60/65/50/75/75 | 800-1200mm | 0.05-0.5mm | 700-800kg / h |
Icyitonderwa: Ibisobanuro birashobora guhinduka nta nteguza.
Imiterere yisoko rya porogaramu ya EVOH ipakira
Mu rwego rwo gupakira ibiryo bikonje, abantu bakoresheje ibyuma cyangwa ibirahuri nkibipfunyika byibiribwa kugirango batandukane neza kwinjiza ibice bitandukanye bya gaze imbere no hanze kugirango barebe ubwiza bwibirimo nagaciro k’ibicuruzwa. Kuberako hari ibintu bitatu byingenzi bitera kwangirika kwibiryo: ibintu biologiya (reaction ya biologiya reaction, nibindi), ibintu bya chimique (cyane cyane okiside yibigize ibiryo) nibintu bifatika (hygroscopique, kumisha, nibindi). Izi ngingo zigira uruhare mubihe bidukikije nka ogisijeni, urumuri, ubushyuhe, ubushuhe, nibindi, bitera kwangirika kwibiryo. Kwirinda kwangirika kwibiribwa ni cyane cyane kubuza ikwirakwizwa rya mikorobe mibiryo, kwirinda okiside yibigize ibiryo na ogisijeni, no kwirinda ubushuhe no gukomeza uburyohe bwambere bwibiryo.
Inzoga yitwa Ethylene-vinyl copolymer, yitwa EVOH, izwi nka barrière eshatu nini ku isi hamwe na chloride ya polyvinylidene (PVDC) na polyamide (PA) [2]. EVOH irashobora kubuza cyane kwinjiza umwuka wa ogisijeni mu kirere mu biribwa, bityo bikabuza gukora uburozi n’ibindi bintu byangiza bitewe n’ikwirakwizwa rya mikorobe, kandi birashobora no gukumira ihinduka ry’ibigize biterwa na okiside, mu gihe bikomeza impumuro nziza kandi bikarinda kwanduza impumuro mbi. Byongeye kandi, kubura imiterere yinzitizi yubushuhe birashobora kwishyurwa nizindi nzego za polyolefine. Kubwibyo, ibikoresho bya EVOH byinshi bipfunyika birashobora gukumira neza kwangirika kwibiryo no kongera igihe cyo kubaho. Mubyongeyeho, biroroshye gutunganya no gushiraho, kandi bifite imikorere myiza yo kurengera ibidukikije. Bitewe nuburyo bwiza bwa bariyeri ya gazi, gukorera mu mucyo, gutunganya no guhangana n’ibisubizo bya EVOH resin, imirima yabyo iragenda yaguka kandi yagutse, kandi ibyifuzo nabyo biriyongera vuba.
Inzitizi ndende EVOH resin
1. Ibikoresho
Imiterere ya barrière ya EVOH Imiterere ya barrière yibikoresho bya polymer bivuga ubushobozi bwo gukingira ibicuruzwa imyuka ya molekile ntoya, amazi, imyuka y'amazi, nibindi. na PET.
2. Iyo EVOH ikoreshwa nkibikoresho byo hejuru cyane, mubisanzwe ifata ibyiciro byinshi. Ibikoresho bisanzwe bikoreshwa ni: PP, HIPS, PE, EVOH, AD, na AD ni ibifatika mumiterere. Imiterere-yuburyo bwinshi irashobora gutanga umukino wuzuye kumiterere ya buri kintu, kunoza amazi ya EVOH, no kubona ibikoresho-barrière ndende ifite ibintu byiza byuzuye. Byinshi muribi byakoreshwaga mubipfunyika byoroshye mugihe cyashize, ariko ibisigarira byinshi nka PP, PE, na PA ntabwo byoroshye gukubitwa kubera gukomera kwabo no gukomera gukabije, ibyo bikaba bigabanya imikoreshereze yabyo mubipfunyika bikomeye, cyane cyane muri ibicuruzwa byuzuza kumurongo. Ingaruka irwanya polystirene HIPS ifite ubukana bwiza nuburyo bwiza bwo kubumba, bikwiriye gukubitwa kandi bikwiranye nibikoresho bipfunyika. Kubwibyo, birihutirwa cyane guteza imbere ingufu za EVOH-barrière yibikoresho bikwiranye no gupakira bikomeye.
Bitewe nubusabane bubi hagati ya resin ya EVOH na HIPS, hamwe n’itandukaniro rinini mu gipimo cy’imiterere ya resin, imbaraga zo guhuza hagati ya substrate na EVOH, ibisabwa ku miterere ya tensile ya EVOH mugihe cyo kubumba kabiri, hamwe no gukwirakwiza ibice bya EVOH mugihe cyo kwiyandikisha kuri kubyara impapuro zuzuzanya Uburinganire bwibikoresho byose nibibazo byingenzi bigira ingaruka kumikorere no gukoresha ibikoresho, kandi nibibazo bitoroshye bigomba gukemurwa mugihe utanga ubu bwoko bwibikoresho.
Urufunguzo rwibikoresho byinshi bifatanyiriza hamwe ni ibifatika (AD). Ibikoresho byo gupakira ibintu bya EVOH mubusanzwe birimo PPEVOH, ariko PP na EVOH ntibishobora guhuzwa neza nubushyuhe, kandi ibifatika (AD) bigomba kongerwaho hagati ya PP na EVOH. Mugihe uhitamo ibifatika, birakenewe ko dusuzuma ibifatika bya PP nkibikoresho fatizo, icya kabiri ni uguhuza ibishishwa bya elegitoronike ya PP na EVOH, naho icya gatatu nicyo gisabwa kumitungo ihindagurika, kugirango wirinde gusibanganya mugihe cya kabiri gutunganya. Kubwibyo, impapuro zifatanije hamwe ni impapuro eshanu zifatanije (PPADEVOHADPP). . Imiterere idahwitse irashobora kandi gukoreshwa, nibindi bikoresho (PE / HIPS, nibindi) extruders irashobora kongerwaho kugirango bafatanye. Ihame ni rimwe, kandi uburyo bumwe bwo guhuza ibice bushobora kugerwaho.
Gusaba
Ibikoresho bya EVOH bifite inzitizi nziza. Binyuze mu buhanga bwo gufatanya hamwe na PP, PE, PA, PETG nibindi bikoresho, birashobora gutunganyirizwa mubice 5, ibice 7, hamwe na 9-by-inzitizi ndende-inzitizi zoroheje zipakira, cyane cyane zikoreshwa mubipfunyika bya aseptic, ibinyobwa bya jelly, ibikomoka ku mata, amafi akonje hamwe n’ibikomoka ku nyama bipfunyika n'ibindi. Mu rwego rutari ibiribwa, bikoreshwa mu gupakira imiti, guhindagurika kwa solvent hamwe nindi mirima, hamwe nibintu byiza bya barrière, biteza imbere cyane ubuzima bwibicuruzwa.
