Aluminium yekuputira haina chete hunhu hwefirimu repurasitiki, asiwo kune imwe nhanho inotsiva aluminium foil, ichiita basa mukuvandudza chigadzirwa giredhi, uye yakaderera mutengo. Naizvozvo, inoshandiswa zvakanyanya mukurongedza kwemabhisikiti uye chikafu chekudya. Nekudaro, mukuita kwekugadzira, panowanzove nedambudziko realuminium layer yekufambisa, izvo zvinotungamira mukudzikira kwesimba rekupeuka kweiyo composite firimu, zvichikonzera kudzikira kwekuita kwechigadzirwa, uye kunyangwe kukanganisa zvakanyanya kunaka kwemukati wepakeji. Ndezvipi zvikonzero zvekufambisa kwealuminium coating? Chii chinofanira kutariswa mukushanda kwekombiki tekinoroji?
Sei iyo aluminium coating ichiita delamination?
Parizvino, anonyanya kushandiswa aruminiyamu plating mafirimu CPP aluminium plating firimu uye PET aluminium plating firimu, uye inoenderana composite firimu zvimiro zvinosanganisira OPP/CPP aluminium plating, PET/CPP aluminium plating, PET/PET aluminium, zvichingodaro. Mumashandisirwo anoshanda, iyo inonyanya kunetsa ndeye PET inoumba PET aluminium plating.
Chikonzero chikuru cheizvi ndechekuti senge substrate yealuminium plating, CPP uye PET zvine misiyano yakakura mune tensile zvivakwa. PET ine yakanyanya kuomarara, uye yakambosanganiswa nezvinhu zvinewo kuomarara kukuru,panguva yekurapa kwemufirimu wekunamatira, kuvapo kwekubatana kunogona kukonzera nyore kukanganisa kusungirirwa kwealuminium coating, zvichiita kuti pave nekufamba kwealuminium coating. Mukuwedzera, iyo permeation effect yeadhesive pachayo inewo imwe mhedzisiro pairi.
Chengetedzo panguva yekushanda kwekompositi process
Mukushanda kweComposite maitiro, kutarisisa kunofanirwa kubhadharwa kune zvinotevera zvinhu:
(1) Sarudza zvinonamira zvakakodzera.Kana inoumbwa nealuminium coating, chenjerera kuti usashandise zvinonamira zvine yakaderera viscosity, sezvo yakaderera viscosity adhesives ine diki molecular uremu uye isina simba intermolecular masimba, zvichikonzera kusimba kwema molecular kuita uye kunokanganisa kunamatira kwavo kune substrate kuburikidza nealuminium coating ye film.
(2) Wedzera kupfava kwefirimu yekunamatira.Iyo chaiyo nzira ndeyekudzikisa huwandu hweanorapa mumiriri kana uchigadzira iyo inonamira yekushanda, kuitira kuderedza dhigirii rekubatanidza maitiro pakati peiyo main agent neanorapa agent, nekudaro kuderedza brittleness yeadhesive firimu uye kuchengetedza yakanaka kuchinjika uye kuwedzera, iyo inobatsira kudzora kuendeswa kwealuminium coating.
(3) Huwandu hwenamo hwakaiswa hunofanira kunge hwakakodzera.Kana huwandu hwekunamira hwakaiswa hwakanyanya kudiki, pasina mubvunzo huchaguma nekuderera kwekombiki nekukurumidza uye nyore peeling; Asi kana huwandu hwekunamira hwakaiswa hwakanyanya, hazvina kunaka. Chekutanga, haina mari. Chechipiri, huwandu hukuru hwekunamira hwakaiswa uye iyo yakareba nguva yekurapa ine simba rekupinda mukati pane iyo aluminium plating layer. Saka huwandu hunonzwisisika hweglue hunofanira kusarudzwa.
(4) Dzora kushushikana zvakanaka. Paunenge uchisunungura aluminium plating,kushushikana kunofanirwa kudzorwa zvakanaka uye kwete zvakanyanya. Chikonzero ndechekuti iyo aluminium coating inotambanudza pasi pekunetsekana, zvichiita kuti elastic deformation. Iyo aluminium coating inoenderana nyore kusunungura uye kunamatira kwakadzikira.
(5) Kukura nokukurumidza.Muchidimbu, tembiricha yekurapa inofanirwa kukwidziridzwa kuti ikurumidze kukurumidza kurapa, kuitira kuti mamorekuru anonamira akwanise kusimba uye kuderedza kukuvadza kwekupinda.
Zvikonzero zvikuru zvealuminium plating kutamiswa
(1) Zvinokonzera kushushikana kwemukati mune glue
Munguva yekupisa kwepamusoro-kupisa kwemaitiro maviri-chikamu chinonamira, kushushikana kwemukati kunokonzerwa nekukurumidza kuyambuka pakati peiyo main agent uye mumiririri wekurapa kunokonzera aluminium plating transfer. Ichi chikonzero chinogona kuratidzwa kuburikidza nekuedza kuri nyore: kana iyo composite aruminiyamu yekuputira ikasaiswa mukamuri yekurapa uye ichiporeswa pamhepo tembiricha (zvinotora mazuva akati wandei kurapa zvizere, pasina hunyanzvi hwekugadzira kukosha, kungoyedza), kana kupora. patembiricha yekamuri kwemaawa akati wandei usati wapinda mukamuri yekurapa, chiitiko chekufambisa kwealuminium chinodzikiswa zvakanyanya kana kubviswa.
Takaona kuti kushandisa 50% yakasimba yemukati inonamira kune anoumba aruminiyamu eplating mafirimu, kunyangwe iine yakaderera yakasimba yemukati inonamira, zvaizoguma nekuita zvirinani kutamisa. Izvi ndizvo chaizvo nekuti iyo network yakaumbwa neyakaomesesa yemukati inonamatira panguva yekuchinjika haina kuomarara seyakaomesesa setiweki chimiro chinoumbwa neakasimba akasimba emukati anonamatira, uye kushushikana kwemukati kunogadzirwa hakuna kufanana, izvo zvisina kukwana kuti densely uye zvakafanana. ita pane iyo aluminium coating, nekudaro kuderedza kana kubvisa chiitiko chealuminum kutamiswa.
Kunze kwemusiyano mudiki pakati peiyo main adhesive uye yakajairwa yekunamira, iyo inoporesa mumiriri weyakajairwa aluminium plating adhesive kazhinji ishoma pane yakajairwa yekunamira. Pane zvakare chinangwa chekudzikisa kana kudzikisa kushushikana kwemukati kunokonzerwa neadhesive crosslinking panguva yekurapa maitiro, kuitira kudzikisa kuendesa kwealuminium plating layer. Saka ini pachangu, ndinotenda kuti nzira ye "kushandisa yakakwirira-tembiricha yakakurumidza kusimba kugadzirisa kuendeswa kwealuminium coating" haigoneke, asi inopesana. Vazhinji vanogadzira iye zvino vanoshandisa mvura-based adhesives kana inoumba aruminiyamu plating mafirimu, ayo anogona zvakare kuratidzwa nemaitiro ezvimiro zvemvura-based adhesives.
(2) Zvikonzero zvekutambanudza deformation yemafirimu matete
Chimwe chiitiko chiri pachena chearuminiyamu plating kutamisa chinowanzo kuwanikwa mumatatu-layer composite, kunyanya muPET/VMPET/PE zvimiro. Kazhinji, isu tinotanga composite PET/VMPET. Kana yakaumbwa mune iyi layer, iyo aluminium coating haiwanzo kutamiswa. Iyo aruminiyamu yekuputira inongofambiswa mushure meyechitatu layer yePE inoumbwa. Kuburikidza nemiedzo, takaona kuti pakupenengura matatu-layer composite sample, kana imwe tension ikaiswa pasample (kureva kuti kuomesa sampuli), iyo aluminium coating haizotamisire. Kamwe kushushikana kwabviswa, iyo aluminium coating inokurumidza kutamisa. Izvi zvinoratidza kuti shrinkage deformation yePE firimu inogadzira mhedzisiro yakafanana nekushushikana kwemukati kunogadzirwa panguva yekunamira yekurapa maitiro. Naizvozvo, kana zvigadzirwa zvakaumbwa zvine matatu-layer chimiro, iyo tensile deformation yePE firimu inofanira kudzikiswa zvakanyanya sezvinobvira kuderedza kana kubvisa chiitiko chearuminiyamu kutamiswa.
Chikonzero chikuru chekuchinjisa aluminium plating ichiri firimu deformation, uye chikonzero chechipiri ndiko kunamira. Panguva imwecheteyo, aluminium plated zvimiro zvinonyanya kutya mvura, kunyangwe kana donhwe remvura rikapinda muchikamu chemusanganiswa wealuminium plated film, zvinokonzeresa delamination yakakomba.
Nguva yekutumira: Oct-28-2023
