Hom thiab Phenomena ntawm Poor Ultraviolet Curing

Feem ntau muaj ntau yam kev ua kom muaj zog hauv UV kho tshuab. Qhov feem ntau ua rau qhov tshwm sim tsis zoo yog cov hauv qab no. Txawm li cas los xij, qee zaum qhov laj thawj rau kev kho tsis zoo yog qhov dav. Hauv lwm lo lus, qee zaum 2 lossis ntau dua qhov tshwm sim muaj zog tshwm sim nyob rau tib lub sijhawm hauv tib yam khoom. Cov kev daws teeb meem tshwj xeeb yog hu rau cov kws tshaj lij ntawm cov tuam txhab ntawm UV resins, UV mercury teeb, cov khoom siv, thiab UV kho tshuab ua ntej, los yog ua kom tiav qhov tseeb ntawm qhov tshwm sim ntawm solidification. Kev daws teeb meem. Lub tswv yim ntawm cov neeg pluag solidification, yog li -hu ua solidification, txhais tau tias: ua ntej, tsis muaj tiav solidification lub xeev, uas yog, lub xeev ntawm tsis hardening; Thib ob, lub xeev ntawm kev sib zog ntau dhau, uas yog, overcured. Yog tias qhov tshwm sim ntawm hardening tshwm sim, nws yuav raug kub hnyiab los ntawm kev kho, los yog qhov tshwm sim ntawm kev hloov cua sov yuav tshwm sim vim muaj calorie ntau ntau ntawm cov curing bin. Yog tias qhov tshwm sim ntawm qhov tshwm sim tsis pom yog vim tias cov resin tsis muaj zog tag nrho, cov khoom yog nplaum, cov nplaum nplaum yuav raug txo kom tsawg, los yog cov tshuaj resin uas tsis yog solidified nyob rau saum npoo ntawm cov khoom. 1. Cov khoom siv thermal deformation kub tsis muaj qhov cuam tshuam ntau rau cov hlau lossis ntoo, tab sis cov yas nyias nyias ntawm cov yeeb yaj kiab lossis cov khoom siv yeeb yaj kiab yog qhov nkag siab heev rau cov cua sov. Cov calories yog cov rhiab heev, yog li nws tuaj yeem hais tias qhov tseem ceeb tshaj plaws hauv kev ua haujlwm ntawm kev daws cov khoom thermal deformation hauv daim teb no. 1) Wave: Thermal deformation yog thawj theem. 2) Curl: Pib ib nrab deformation. 3) Shrinkage: loj hauv zos deformation. 4) Carbonization pib theem: tag nrho cov tig daj, dub, thiab thermal hnyav hnyav heev. 2. Txawm hais tias cov nyhuv nplaum zoo li tau ua tiav cov txheej txheem kho, cov nyhuv adhesion ntawm cov ntaub ntawv thiab txheej tsis zoo. Nws tuaj yeem raug txhuam nrog tus ntsia hlau lossis npib maj mam, txheej txheej yuav raug muab tshem tawm, thiab kev ntsuas tus ntoo khaub lig tsis tuaj yeem kuaj. Txawb qhov chaw, LCD zaub qhov chaw lossis cov yeeb yaj kiab, COG / BGA thiab lwm yam nti yuav tsum ruaj khov. 3. Swaging, Bulging) Cov khoom siv niam uas yuav tsum tau pleev xim yog zoo li yas lossis roj hmab, uas yog rhiab heev rau cov khoom siv thermal. Ib feem ntawm cov khoom siv los yog cov resin yuav o vim cua sov thaum kho. , Nws yuav ua rau lub phenomenon ntawm hlawv ntawm niam cov khoom los yog resin. Kev nthuav dav ntawm sab hauv thiab sab nraud khoov yog qhov hnyav, thiab qhov tshwm sim ntawm npuas tshwm hauv, yog li ntawd cov tsos tom qab solidification yuav tsis zoo. Qhov zoo ntawm qhov tsis zoo no tshwm sim hauv cov yeeb yaj kiab kho qhov muag thiab lub xov tooj ntawm tes ua kom pom kev sib haum xeeb. 4. Bubbling (Bubbling, Air Bubble) zaj duab xis, cov yeeb yaj kiab zoo thiab lwm cov yeeb yaj kiab zoo, txawm hais tias kev sib koom ua ke thiab kev sib koom ua ke tuaj yeem ua tiav tag nrho, yog tias koj saib nws nrog lub tshuab ntsuas, koj yuav pom tias muaj cov nplua thiab micro-cracks uas twb muaj lawm. Yog vim li cas nws tseem tsis tau xaus lus, uas kuj yog qhov tshwm sim ntawm cov khoom tsis zoo uas nyuaj rau kev daws teeb meem. Peb ntseeg tias qhov no yog qhov tshwm sim ntawm cov khoom siv lead ua ntawm cov resin nyob rau hauv kab rov tav faib tom qab cov resin yog solidified. 5. Nto tawg zaj duab xis, zoo-zoo zaj duab xis thiab lwm yam precision zaj duab xis. Txawm hais tias lub solidification thiab adhesion tuaj yeem ua tiav tag nrho, yog tias koj saib nws nrog lub tshuab tsom, koj yuav pom tias muaj cov nplua thiab micro-cracks. Yog vim li cas nws tseem tsis tau xaus lus, uas kuj yog qhov tshwm sim ntawm cov khoom tsis zoo uas nyuaj rau kev daws teeb meem. Peb ntseeg tias qhov no yog qhov tshwm sim ntawm cov khoom siv lead ua ntawm cov resin nyob rau hauv kab rov tav faib tom qab cov resin yog solidified. 6. Qhov tshwm sim ntawm yellowing yog ib qho tshwm sim uas tshwm sim ntau dua thaum solidifying ntawm pob tshab resin. Koj tuaj yeem txo qhov tshwm sim ntawm kev hloov daj los ntawm kev ntxiv cov kev hloov daj hauv cov khoom sib xyaw kom txo tau qhov tshwm sim ntawm kev hloov daj. 7. Zaj duab xis uas tsis yog-dry kua nplaum luam ntawv feem ntau yog siv nyias-film tsis-drying cov ntaub ntawv yog: polyethylene, polypropylene, polyester, polyvinyl chloride, polystyrene, polyolefin, thiab lwm yam. Tab sis qhov txawv yog tias zaj duab xis tsis nqus. Yog li ntawd, cov ntawv luam ntawm zaj duab xis tsis qhuav kua nplaum tsuas yog siv UV convex marks thiab UV soft printing. Txawm li cas los xij, nyob rau hauv cov txheej txheem ntawm kev luam ntawv thiab kev ua haujlwm, qhov teeb meem uas cov tuam txhab luam ntawv feem ntau ntsib yog cov tshuaj pleev xim UV tsis txaus rau saum npoo ntawm zaj duab xis. Lub solidification muaj kev cuam tshuam zoo rau lub zog stretch. Nrog rau qhov nce ntawm kev kho ntawm cov nplaum, qhov sib txuas ntawm qhov sib txuas ceev nce, qhov nruab nrab molecular loj ntawm tus ntoo khaub lig-linking point ua me. Yog tias cov epoxy thiab polyurethane acrylics sib koom ua ke, qhov adhesion yuav zoo heev.