Foaming thiab delamination ntawm cov khoom laminating muaj ib qho zoo sib xws, uas yog, cov yeeb yaj kiab tau sib cais los ntawm cov substrate ntawm cov ntawv luam tawm, uas rhuav tshem qhov nruj thiab du ntawm daim ntawv thiab cov yas sib xyaw, tab sis cov lus qhia txawv.
Blistering yog cov tsos ntawm cov voids hauv zos hauv cov duab xws li pinpoints, nplej nplej, streaks, thiab tawg. Kev tso tawm yog thaj chaw loj lossis tag nrho kev sib cais ntawm daim ntawv thiab yas.
Ntawm lawv, "cov yeeb yaj kiab ua ntev" thiab "cov kua nplaum ua nplaum" yog ib txoj cai yooj yim.
Yog vim li cas rau qhov kev hloov ntawm "film lengthening" thiab "adhesive stickiness" yog tias muaj ntau cov organic solvents nyob rau hauv cov nplaum siv nyob rau hauv ntub compounding txheej txheem ntawm cov kua nplaum.
Cov kuab tshuaj organic no tsis tuaj yeem siv tag nrho hauv cov txheej txheem tsim khoom thiab nyob twj ywm hauv cov nplaum txheej, uas yog sib xyaw los ntawm cov yeeb yaj kiab thiab cov ntawv luam tawm.
Cov organic hnyav ntxiv nyob rau hauv cov nplaum txheej yuav tsum txav mus tas li hauv cov ntawv thiab cov yas sib xyaw. Txhawm rau kom tshem tawm cov matrix ntawm cov kua nplaum txheej thiab khiav mus rau qhov chaw, kev txav ntawm cov organic hnyav molecules yog nqa tawm nyob rau hauv ntau cov lus qhia tib lub sijhawm.
Ib feem txav mus rau hauv nruab nrab ntawm cov kua nplaum txheej, ua rau cov kua nplaum soften thiab nplaum; lwm qhov nkag mus los ntawm cov kua nplaum txheej, txav mus rau ntawm daim ntawv, cov ntaub ntawv diffusion hauv txheej number case, thiab rhuav tshem cov adhesion thiab nkag mus ntawm tus number case rau daim ntawv;
Lwm qhov dhau los ntawm cov nplaum txheej thiab txav mus rau hauv zaj duab xis, thiab tom qab raug thaiv, nws sib sau ua ke ntawm cov yeeb yaj kiab sab hauv, swells zaj duab xis, ua rau nws ntev dua, thiab qee qhov bulges rau hauv npuas.
Lub softening thiab stickiness ntawm cov kua nplaum txo cov thermosetting nplaum quab yuam ntawm cov khoom polymer; diffusion thiab dispersion ntawm tus number case ua rau kev puas tsuaj ntawm adhesion rau daim ntawv; qhov o ntawm cov yeeb yaj kiab yuav ntev dua, thiab nws yuav tsum ncab mus rau sab nraud thiab tshem tawm ntawm lub substrate ntawm daim ntawv luam tawm.
Nrog rau cov txheej txheem npaj ua ntawv ntub dej, tsis ntev los yog tom qab, lub teeb los yog hnyav, blistering lossis zaj duab xis tso tawm yuav tshwm sim.
Cov nplaum kub yaj uas siv rau cov yeeb yaj kiab ua ntej txheej tsis muaj cov kuab tshuaj. Tsis muaj cov kuab tshuaj organic rau ntawm qhov muag ntawm cov kua nplaum, qhov diffusion ntawm tus number case, qhov o ntawm zaj duab xis thiab lwm yam.
Lub thermoplastic nplaum quab yuam ntawm cov khoom siv polymer yog tsim tom qab nws tau sib cais los ntawm qhov cua sov, thiab nws ruaj khov thiab ruaj khov. Yog li ntawd, nws tuaj yeem tiv thaiv qhov tshwm sim ntawm cov xwm txheej zoo xws li foaming thiab delamination ntawm zaj duab xis-coated khoom.