Abstract: Tsab ntawv txheeb xyuas hauv cov ntsiab lus hais txog qhov ua tau zoo ntawm cov cuab yeej ntawm qib ntawm cov nplaum hauv txheej txheej lamination.Ntxiv rau qhov no, nws hais tias tsis yog txiav txim siab qhov kev ua tau zoo los ntawm kev txiav txim siab yog tias muaj.'dawb pob' los yog ' npuas', nws yog qhov pom tseeb ntawm cov khoom laminated uas tuaj yeem yog tus qauv ntsuas ntawm qhov kev ua tau zoo hauv cov nplaum.
1.Qhov teeb meem npuas thiab qib ntawm cov kua nplaum
Cov pob dawb, npuas, thiab cov pob tshab tsis zoo yog cov teeb meem zoo sib xws hauv kev ua cov khoom sib xyaw.Feem ntau, cov khoom siv sib xyaw ua ke ntaus nqi cov teeb meem saum toj no rau kev ua kom tsis zoo ntawm cov nplaum!
1.1 Cov kua nplaum no tsis yog kua nplaum
Cov khoom siv sib xyaw ua ke tuaj yeem xa rov qab cov ntaub nplaum uas tsis tau qhib thiab tsis siv rau cov neeg muag khoom raws li kev txiav txim siab ntawm qhov tsis zoo ntawm cov nplaum nplaum, los yog xa cov lus tsis txaus siab lossis thov nrog cov neeg xa khoom.
Nws yuav tsum raug sau tseg tias cov kua nplaum suav tias muaj kev ua haujlwm tsis zoo yog "cov kua nplaum ua haujlwm" uas tau npaj / diluted los ntawm cov neeg siv khoom thiab muaj viscosity ntawm tus nqi tshwj xeeb.Cov kua nplaum rov qab yog qhov tsis tau qhib thawj lub thoob ntawm cov kua nplaum.
Ob lub thoob ntawm "kua nplaum" no yog cov ntsiab lus sib txawv thiab txhua yam!
1.2 Kev ntsuas ntsuas rau cov kua nplaum qib
Cov kev ntsuas kev ntsuas rau kev ntsuas qib kev ua tau zoo ntawm cov nplaum yuav tsum yog viscosity thiab nto ntub dej nro.Los yog, "lub fluidity ntawm kua nplaum" yog ib qho kev sib xyaw ntawm "lub fluidity ntawm cov kua nplaum" thiab "lub wettability ntawm kua nplaum".
Nyob rau hauv chav tsev kub, qhov ntub dej nro ntawm ethyl acetate yog li 26mN / m.
Thawj lub chim siab (cov ntsiab lus khoom) ntawm cov kuab tshuaj raws li polyurethane adhesives siv nyob rau hauv lub tshav pob ntawm cov khoom sib xyaw yog feem ntau ntawm 50% -80%.Ua ntej siv cov khoom sib xyaw ua ke, cov nplaum uas tau hais los saum toj no yuav tsum tau diluted mus rau qhov ua haujlwm siab ntawm ib ncig ntawm 20% -45%.
Vim lub ntsiab lus tseem ceeb hauv cov kua nplaum ua haujlwm yog ethyl acetate, qhov chaw ntub dej ntawm cov kua nplaum ua haujlwm yuav nyob ze rau ntawm qhov chaw ntub dej ntawm ethyl acetate nws tus kheej.
Yog li ntawd, ntev li ntev raws li qhov chaw ntub dej ntawm qhov sib xyaw substrate siv ua tau raws li qhov yuav tsum tau ua ntawm kev sib xyaw ua ke, lub wettability ntawm cov nplaum yuav zoo heev!
Kev ntsuas ntawm fluidity ntawm kua nplaum yog viscosity.Hauv kev sib xyaw ua ke, lub npe hu ua viscosity (piv txwv li kev ua haujlwm viscosity) yog hais txog lub sijhawm hauv vib nas this uas cov kua nplaum ua haujlwm tau ntsib thaum ntws tawm ntawm lub khob viscosity, ntsuas siv cov qauv tshwj xeeb ntawm viscosity khob.Nws tuaj yeem txiav txim siab tias cov kua ua haujlwm ntawm cov kua nplaum npaj los ntawm cov qib sib txawv ntawm cov kua nplaum qub muaj tib yam "ua haujlwm viscosity", thiab nws "ua haujlwm kua" muaj tib yam "kua nplaum fluidity"!
Raws li lwm yam kev hloov pauv, qhov qis dua "ua haujlwm viscosity" ntawm "ua haujlwm kua" npaj nrog tib lub thav duab hom nplaum, qhov zoo dua nws "nplaum fluidity"!
Tshwj xeeb tshaj yog, rau ntau qib sib txawv ntawm cov nplaum, yog tias tus nqi viscosity ntawm cov kua nplaum ua haujlwm yog 15 vib nas this, tom qab ntawd cov kev daws teeb meem ua haujlwm tau npaj los ntawm cov qib ntawm cov nplaum no muaj tib yam "cov nplaum nplaum".
1.3 Cov cuab yeej qib ntawm cov kua nplaum yog cov yam ntxwv ntawm cov kua nplaum ua haujlwm
Qee cov cawv tsis tsim cov kua dej khov thaum lub thoob tsuas yog qhib, tab sis lub jelly zoo li projectile uas tsis muaj fluidity.Lawv yuav tsum tau yaj thiab diluted nrog tus nqi tsim nyog ntawm cov kuab tshuaj organic kom tau qhov xav tau concentration thiab viscosity ntawm cov kua nplaum.
Nws yog qhov pom tseeb tias qhov kev ua tau zoo ntawm cov kua nplaum yog qhov kev ntsuam xyuas ntawm cov kev daws teeb meem ua haujlwm rau hauv ib qho tshwj xeeb "ua haujlwm concentration", es tsis yog kev ntsuam xyuas ntawm cov kua nplaum qub uas tsis muaj kuab lom.
Yog li ntawd, nws yog qhov tsis raug rau tus cwj pwm tsis zoo ntawm cov kua nplaum rau cov yam ntxwv ntawm ib hom ntawm thawj lub thoob kua nplaum!
2.Cov yam ntxwv cuam tshuam rau qib ntawm cov nplaum
Txawm li cas los xij, rau cov kua nplaum ua haujlwm diluted, muaj qhov sib txawv ntawm nws cov nplaum dej!
Raws li tau hais ua ntej, cov cim tseem ceeb rau kev ntsuas qhov kev ua tau zoo ntawm cov kua nplaum ua haujlwm yog cov dej ntub dej thiab ua haujlwm viscosity.Qhov taw qhia ntawm qhov ntub dej nro tsis qhia cov kev hloov pauv tseem ceeb hauv cov pa ua haujlwm siab ntau yam.Yog li ntawd, cov ntsiab lus ntawm cov nplaum nplaum tsis zoo yog tias thaum lub sijhawm ua ntawv thov, viscosity ntawm cov nplaum txawv txav nce vim qee yam, ua rau txo qis hauv nws qhov kev ua tau zoo!
Yam dab tsi tuaj yeem ua rau muaj kev hloov pauv ntawm viscosity ntawm cov kua nplaum thaum nws siv?
Muaj ob yam tseem ceeb uas tuaj yeem ua rau muaj kev hloov pauv ntawm viscosity ntawm cov kua nplaum, ib qho yog qhov kub ntawm cov kua nplaum, tab sis qhov concentration ntawm cov kua nplaum.
Nyob rau hauv ib txwm muaj xwm txheej, viscosity ntawm cov kua dej txo nrog qhov kub thiab txias.
Ntawm cov neeg siv phau ntawv muab los ntawm cov tuam txhab nplaum sib txawv, qhov viscosity qhov tseem ceeb ntawm cov kua nplaum nplaum (ua ntej thiab tom qab dilution) ntsuas siv lub viscometer rotary lossis viscosity khob ntawm cov kua kub ntawm 20 ° C lossis 25 ° C (piv txwv li qhov kub ntawm cov nplaum. daws nws tus kheej) feem ntau yog qhia.
Ntawm cov neeg siv khoom, yog tias qhov ntsuas kub ntawm cov khoom qub ntawm cov kua nplaum thiab cov kua nplaum (ethyl acetate) siab dua lossis qis dua 20 ° C lossis 25 ° C, qhov kub ntawm cov kua nplaum npaj kuj yuav siab dua lossis qis dua 20 ° C. los yog 25 ° C. Lawm, qhov tseeb viscosity tus nqi ntawm cov kua nplaum npaj kuj yuav qis dua tus nqi viscosity qhia hauv phau ntawv.Thaum lub caij ntuj no, qhov kub ntawm cov nplaum npaj yuav qis dua 5 ° C, thiab nyob rau lub caij ntuj sov, qhov kub ntawm cov nplaum npaj yuav siab dua 30 ° C!
Nws yuav tsum raug sau tseg tias ethyl acetate yog cov organic hnyav hnyav heev.Thaum lub sij hawm volatilization txheej txheem ntawm ethyl acetate, nws yuav nqus ib tug loj npaum li cas ntawm tshav kub los ntawm cov kua nplaum thiab cov huab cua ib puag ncig.
Tam sim no, feem ntau laminating units nyob rau hauv composite cov cav tov yog qhib thiab nruab nrog cov tso pa tawm hauv zos, yog li ib tug loj npaum li cas ntawm cov kuab tshuaj yuav evaporate los ntawm cov nplaum disc thiab chim.Raws li kev soj ntsuam, tom qab lub sijhawm ua haujlwm, qhov kub ntawm cov kua nplaum ua haujlwm hauv cov kua nplaum nplaum yuav qee zaum ntau dua 10 ° C qis dua qhov ntsuas kub ib puag ncig!
Raws li qhov kub ntawm cov kua nplaum maj mam txo qis, viscosity ntawm cov kua nplaum yuav maj mam nce.
Yog li, qhov kev ua tau zoo ntawm cov kuab tshuaj raws li cov nplaum ua tau maj mam deteriorates nrog lub sijhawm ntev ntawm cov khoom siv ua haujlwm.
Hauv lwm lo lus, yog tias koj xav kom muaj kev ruaj ntseg ntawm cov kuab tshuaj raws li cov nplaum nplaum, koj yuav tsum siv lub viscosity maub los lossis lwm yam txhais tau tias kom cov nplaum viscosity ruaj khov thoob plaws hauv daim ntawv thov.
3.Kev ntsuas ntsuas kom raug cov kua nplaum kom raug
Qhov kev ntsuam xyuas ntawm cov kua nplaum leveling yuav tsum yog cov yam ntxwv ntawm cov khoom sib xyaw ntawm ib theem tshwj xeeb, thiab cov txiaj ntsig ntawm cov kua nplaum yog hais txog cov txiaj ntsig tau tom qab siv cov kua nplaum.Ib yam li "tsim siab tshaj plaws" ntawm lub tsheb yog tus yam ntxwv ntawm cov khoom, qhov tseeb tsav ceev ntawm lub tsheb ntawm txoj kev nyob rau hauv tej yam kev mob yog lwm yam tshwm sim.
Cov kua nplaum zoo leveling yog qhov tseem ceeb rau kev ua tiav cov txiaj ntsig zoo.Txawm li cas los xij, kev ua haujlwm zoo ntawm cov kua nplaum yuav tsis tas yuav ua rau cov kua nplaum ua tau zoo, thiab txawm tias cov kua nplaum muaj kev ua haujlwm tsis zoo (piv txwv li cov viscosity siab), cov kua nplaum zoo tuaj yeem ua tiav hauv cov xwm txheej tshwj xeeb.
4.Qhov kev sib raug zoo ntawm cov txiaj ntsig ntawm cov kua nplaum qib thiab qhov tshwm sim ntawm "dawb pob" thiab " npuas"
Tsis zoo "dawb pob, npuas, thiab pob tshab" yog ob peb yam tsis xav tau ntawm cov khoom sib xyaw.Muaj ntau qhov laj thawj rau cov teeb meem saum toj no, thiab kev ua haujlwm tsis zoo ntawm cov kua nplaum tsuas yog ib qho ntawm lawv.Txawm li cas los xij, vim li cas rau qhov tsis zoo ntawm cov kua nplaum tsis yog vim qhov tsis zoo ntawm cov kua nplaum!
Qhov tsis zoo ntawm cov kua nplaum yuav tsis tas yuav ua rau "dawb pob" lossis " npuas", tab sis nws tuaj yeem cuam tshuam rau qhov pom ntawm cov yeeb yaj kiab sib xyaw.Yog hais tias lub micro flatness ntawm cov sib xyaw substrate tsis zoo, txawm tias qhov sib txawv ntawm cov nplaum yog qhov zoo, tseem muaj qhov ua tau ntawm "dawb pob thiab npuas".
Post lub sij hawm: Jan-17-2024