Abstract: Kab lus no txheeb xyuas qhov kev ua tau zoo, kev sib raug zoo, thiab lub luag haujlwm ntawm cov nplaum nplaum ntawm ntau theem ntawm kev sib xyaw, uas pab peb txiav txim siab zoo dua qhov ua rau muaj teeb meem tshwm sim thiab daws teeb meem sai.
Nyob rau hauv tus txheej txheem ntawm saj zawg zog ntim composite ntau lawm, lub "leveling" ntawm cov nplaum muaj ib tug tseem ceeb cuam tshuam rau lub composite zoo.Txawm li cas los xij, lub ntsiab lus ntawm "leveling", qhov sib txawv ntawm "leveling", thiab qhov cuam tshuam ntawm microscopic states ntawm qhov kawg kev sib xyaw zoo tsis meej heev.Kab lus no siv cov kua nplaum nplaum ua piv txwv los tham txog lub ntsiab lus, kev sib raug zoo, thiab lub luag haujlwm ntawm kev sib tw ntawm ntau theem.
1.Lub ntsiab lus ntawm leveling
Leveling properties of adhesives: Lub peev xwm ntws flattening ntawm cov nplaum qub.
Leveling ntawm cov kua dej ua haujlwm: Tom qab dilution, cua sov thiab lwm yam kev cuam tshuam, muaj peev xwm ntawm cov kua nplaum ua haujlwm kom ntws thiab flatten thaum lub sij hawm txheej txheej ua tiav.
Thawj theem muaj peev xwm: Lub peev xwm leveling ntawm cov nplaum tom qab txheej thiab ua ntej lamination.
Thib ob theem peev xwm: Lub peev xwm ntawm cov nplaum kom ntws thiab flatten tom qab compounding kom txog thaum nws tau matured.
2.Qhov kev sib raug zoo thiab cuam tshuam ntawm kev sib tw ntawm theem sib txawv
Vim yog cov khoom lag luam xws li cov nplaum nplaum, lub xeev txheej, ib puag ncig lub xeev (kub, av noo), substrate xeev (nto nro, flatness), thiab lwm yam., cov txiaj ntsig kawg tuaj yeem cuam tshuam.Tsis tas li ntawd, ntau qhov sib txawv ntawm cov yam ntxwv no tuaj yeem ua rau muaj kev hloov pauv loj hauv cov txiaj ntsig zoo sib xws thiab tseem ua rau muaj qhov tsis txaus ntseeg, uas tsis tuaj yeem tsuas yog vim qhov tsis zoo ntawm cov nplaum nplaum.
Yog li ntawd, thaum sib tham txog cov kev cuam tshuam ntawm leveling ntawm composite zoo, peb thawj zaug xav hais tias cov indicators as saum toj no ntau lawm yam yog zoo ib yam, uas yog, tsis suav cov cawv ntawm cov saum toj no yam tseem ceeb thiab tsuas yog tham txog theem.
Ua ntej, cia peb txheeb cov kev sib raug zoo ntawm lawv:
Hauv cov dej ua haujlwm, cov ntsiab lus hnyav yog siab dua li cov nplaum ntshiab, yog li cov viscosity ntawm cov nplaum yog qhov qis tshaj ntawm cov ntsuas saum toj no.Nyob rau tib lub sijhawm, vim muaj kev sib xyaw ua ke ntawm cov nplaum thiab cov kuab tshuaj, nws qhov nro saum npoo kuj yog qhov qis tshaj.Lub flowability ntawm cov kua nplaum ua haujlwm yog qhov zoo tshaj plaws ntawm cov ntsuas saum toj no.
Thawj theem yog thaum lub fluidity ntawm cov dej ua haujlwm pib txo nrog cov txheej txheem ziab tom qab txheej.Feem ntau, qhov kev txiav txim node rau thawj theem yog tom qab sib xyaw winding.Nrog rau qhov evaporation sai ntawm cov kuab tshuaj, lub fluidity coj los ntawm cov kuab tshuaj yog sai sai poob, thiab viscosity ntawm cov nplaum yog ze rau ntawm cov nplaum ntshiab.Raw roj hmab leveling hais txog qhov fluidity ntawm cov nplaum nws tus kheej thaum cov kuab tshuaj muaj nyob rau hauv cov roj hmab tiav lawm kuj raug tshem tawm.Tab sis lub sijhawm ntawm theem no yog luv heev, thiab raws li cov txheej txheem ntau lawm, nws yuav nkag mus rau theem thib ob sai sai.
Qhov thib ob theem yog hais txog kev nkag mus rau theem maturation tom qab cov txheej txheem sib xyaw ua tiav.Raws li qhov kub thiab txias, cov nplaum nkag mus rau theem ntawm cov tshuaj tiv thaiv crosslinking sai, thiab nws cov fluidity txo qis nrog kev nce qib ntawm cov tshuaj tiv thaiv, thaum kawg poob tag. Conclusion: Ua hauj lwm cov kua leveling ≥ thawj theem> thawj gel leveling> thib ob theem.
Yog li ntawd, nyob rau hauv dav dav, lub liquidity ntawm saum toj no plaub theem maj txo los ntawm siab mus rau qis.
3.Qhov cuam tshuam thiab tswj cov ntsiab lus ntawm ntau yam hauv cov txheej txheem tsim khoom
3.1 Daim ntawv thov kua nplaum
Tus nqi ntawm cov kua nplaum siv yog qhov tseem ceeb tsis tas yuav cuam tshuam nrog cov kua nplaum ntawm cov kua nplaum.Hauv kev ua haujlwm sib xyaw, ntau dua ntawm cov nplaum muab cov nplaum ntau dua hauv cov khoom sib xyaw kom tau raws li qhov xav tau ntawm cov nplaum nplaum.
Piv txwv li, nyob rau hauv ib tug ntxhib kev sib raug zoo nto, cov nplaum ntxiv cov interlayer khoob uas tshwm sim los ntawm tsis sib xws interfaces, thiab qhov luaj li cas ntawm qhov khoob txiav txim siab npaum li cas ntawm txheej.Lub fluidity ntawm cov nplaum tsuas yog txiav txim siab lub sijhawm nws yuav siv los sau qhov khoob, tsis yog qhov degree.Hauv lwm lo lus, txawm tias cov nplaum nplaum muaj qhov zoo fluidity, yog tias cov txheej txheej qis dhau lawm, tseem yuav muaj qhov tshwm sim xws li "dawb pob, npuas".
3.2 Txheej xwm txheej
Lub xeev txheej yog txiav txim siab los ntawm kev faib tawm ntawm cov nplaum xa los ntawm cov txheej txheej txheej rau cov substrate.Yog li ntawd, nyob rau hauv tib lub txheej txheej, qhov nqaim mesh phab ntsa ntawm cov menyuam txheej txheej, qhov luv luv ntawm kev mus los ntawm cov nplaum nplaum tom qab hloov mus, qhov tsim ntawm cov nplaum nplaum sai dua, thiab qhov zoo dua qhov pom.Raws li ib qho kev quab yuam sab nraud uas cuam tshuam nrog kev sib txuas ntawm cov nplaum, kev siv cov kua nplaum sib xyaw ua ke muaj txiaj ntsig zoo rau cov khoom sib xyaw ntau dua li cov uas tsis siv.
3.3 Cov xwm txheej
Qhov sib txawv kub txiav txim siab thawj viscosity ntawm cov nplaum thaum tsim khoom, thiab qhov viscosity thawj zaug txiav txim siab qhov pib flowability.Qhov siab dua qhov kub, qhov qis dua qhov viscosity ntawm cov nplaum, thiab qhov zoo dua qhov flowability.Txawm li cas los xij, raws li cov kuab tshuaj volatilizes sai dua, cov concentration ntawm cov tshuaj ua haujlwm hloov sai dua.Yog li ntawd, nyob rau hauv qhov kub thiab txias, qhov hnyav evaporation tus nqi yog inversely proportional rau viscosity ntawm kev ua hauj lwm tov.Nyob rau hauv overproduction, tswj qhov hnyav evaporation tus nqi tau dhau los ua ib qho teeb meem tseem ceeb heev.Cov av noo nyob rau hauv ib puag ncig yuav ceev cov tshuaj tiv thaiv ntawm cov nplaum, exacerbating qhov nce hauv viscosity ntawm cov nplaum.
4. Cov lus xaus
Hauv cov txheej txheem tsim khoom, kev nkag siab meej txog kev ua tau zoo, kev sib raug zoo, thiab lub luag haujlwm ntawm "adhesive leveling" ntawm ntau theem tuaj yeem pab peb txiav txim siab qhov tseeb ntawm cov teeb meem tshwm sim hauv cov ntaub ntawv sib xyaw, thiab ceev nrooj txheeb xyuas cov tsos mob ntawm qhov teeb meem thiab daws lawv. .
Post lub sij hawm: Jan-17-2024