PET aluminized zaj duab xis yog cov khoom ntim khoom sib xyaw ua ke uas tsim los ntawm txheej txheej nyias nyias ntawm cov hlau txhuas rau saum npoo ntawm PET siv cov txheej txheem tshwj xeeb. Nws muab cov khoom zoo ntawm cov hlau txhuas thiab kev ua kom yooj yim ntawm PET, thiab yog siv dav hauv ntim, luam ntawv, hluav taws xob thiab lwm yam haujlwm. Txawm li cas los xij, lub zog sib txuas ntawm aluminium txheej thiab PET substrate yog qhov tsawg, uas tuaj yeem ua rau muaj kev cuam tshuam tsis zoo rau cov khoom lag luam. Yog li yuav ua li cas txhawm rau txhim kho qhov adhesion ntawm txhuas txheej ntawm PET aluminized zaj duab xis? Tus editor yuav qhia nws los ntawm ob yam: lub mechanism ntawm adhesion thiab txoj kev txhim kho adhesion.
Part 1 Interlayer adhesion yog dab tsi?
Interlayer adhesion yog hais txog lub peev xwm ntawm cov khaubncaws sab nraud povtseg nyob rau hauv ib tug multilayer cov qauv rau adheres rau ib leeg. Qhov kev quab yuam no tuaj yeem tsim los ntawm ntau yam txheej txheem, suav nrog lub cev adsorption, kev sib txuas tshuaj lom neeg, thiab kev sib txuas ntawm cov tshuab.
(1) Lub cev adsorption Thaum ob cov ntaub ntawv nkag mus rau hauv kev sib cuag, lawv tuaj yeem ntsib lub cev adsorption vim yog lub zog ntawm van der Waals, ua rau adhesion.
(2) Chemical bonding Yog hais tias qhov chaw ntawm ob cov ntaub ntawv muaj peev xwm ntawm cov tshuaj tiv thaiv, lawv muaj peev xwm tsim tshuaj bonds xws li covalent bonds, hydrogen bonds, los yog ionic bonds, uas muaj zog zog.
(3) Mechanical interlocking Thaum ob qhov chaw ntxhib thiab tsis sib xws thiab lawv cov microstructures haum ua ke, mechanical interlocking tuaj yeem tshwm sim.
(4) Surface zog Cov molecules nyob rau saum npoo ntawm cov khoom muaj zog dua lub xeev vim tsis txaus siab chemical bonds. Lub zog saum npoo no tuaj yeem txhawb nqa adhesion nrog lwm cov ntaub ntawv.
(5) Molecular diffusion Nyob rau hauv qee qhov kub thiab siab, cov molecules ntawm ob cov ntaub ntawv yuav diffuse rau ib leeg, ua rau muaj kev sib xyaw ntawm lawv.
(6) Electrostatic force Lub zog tsim los ntawm kev nyiam los yog kev tawm tsam ntawm cov nqi hluav taws xob tuaj yeem tsim kev nyiam lossis ruaj khov ntawm cov txheej txheem.
Part.2 Txoj kev los txhim kho adhesion
Lub adhesion ntawm PET thiab txhuas txheej hauv PET aluminized zaj duab xis tsuas yog nyob ntawm van der Waals quab yuam, uas yog qhov tsis muaj zog. Yog li ntawd, txhawm rau txhim kho qhov adhesion ntawm aluminium txheej, peb tuaj yeem daws nws los ntawm ob yam: cov khoom siv hauv paus thiab txheej txheem aluminium plating.
(1) Kev kho substrate: Kev kho deg pretreatment ntawm substrate ua ntej txhuas plating, xws li kev kho mob corona, kev kho ntshav plasma los yog tshuaj kho mob, tuaj yeem ua rau lub zog roughness thiab deg ntawm lub substrate nto, yog li txhim kho cov adhesion ntawm txhuas txheej. Plasma kev kho mob siv cov roj sib xyaw ntawm argon thiab oxygen rau kev kho mob, uas tuaj yeem txhim kho qhov polarity ntawm substrate nto, nce qhov nro, thiab qhia cov pawg polar los ntawm cov tshuaj tiv thaiv rau kev sib xyaw nrog txhuas atoms txhawm rau txhim kho lub zog ntawm txhuas txheej. Adhesion.
(2) Aluminium plating txheej txheem Thaum lub sij hawm evaporation txheej txheem, tej yam kev mob xws li lub tshuab nqus tsev kawm ntawv, evaporation kub, evaporation tus nqi, zaus thiab qhov zoo ntawm txhuas hlau muaj ib qho tseem ceeb cuam tshuam rau adhesion ntawm txhuas txheej. Optimizing cov xwm txheej no tuaj yeem txhim kho qhov adhesion ntawm aluminium txheej. kev ua tau zoo. Ntxiv rau cov txheej txheem saum toj no, kuj tseem muaj cov txheej txheem nqi siab dua xws li kev siv cov yeeb yaj kiab ua ntej (xws li DuPont, Fuwei FC506, thiab lwm yam) ua ke nrog cov txheej txheem aluminium plating, uas tuaj yeem txhim kho adhesion.
