Cov ntsiab cai ntawm Leveling Agents

Txheej txheem cej luam ntawm Leveling cov

Tom qab daim ntawv thov txheej txheej, muaj cov txheej txheem ntawm ntws thiab ziab mus rau hauv ib zaj duab xis, uas maj mam tsim ib tug du, txawm, thiab uniform txheej. Lub peev xwm ntawm txheej kom ua tiav ib qho chaw tiaj tus thiab du yog hu ua cov cuab yeej leveling.

Hauv kev siv cov txheej txheem txheej txheem, cov teeb meem tshwm sim xws li txiv kab ntxwv tev, ntses qhov muag, pinholes, shrinkage kab noj hniav, ntug retraction, airflow rhiab heev, nrog rau cov cim txhuam thaum txhuam thiab cov menyuam cov cim thaum lub sij hawm siv cov menyuam—txhua yam uas tshwm sim los ntawm kev tsis zoo—tau sau los ua neeg pluag leveling. Cov phenomena no degrade cov hniav thiab kev tiv thaiv kev ua haujlwm ntawm txheej.

Ntau yam cuam tshuam rau txheej txheej, suav nrog hnyav evaporation gradient thiab solubility, nto nro ntawm txheej, ntub zaj duab xis thickness thiab nto nro gradient, rheological zog ntawm txheej.,siv cov txheej txheem, thiab ib puag ncig tej yam kev mob. Ntawm cov no, qhov tseem ceeb tshaj plaws yog qhov nro ntawm cov txheej txheej, qhov nro ntawm qhov gradient tsim hauv cov yeeb yaj kiab ntub dej thaum tsim cov yeeb yaj kiab, thiabcovmuaj peev xwm ntawm cov yeeb yaj kiab ntub dej kom sib npaug ntawm qhov nro.

Kev txhim kho txheej txheej yuav tsum tau kho cov txheej txheem thiab sib xyaw cov khoom tsim nyog kom ua tiav qhov tsim nyog ntawm qhov nro thiab txo qhov nro gradient.

Muaj nuj nqi ntawm Leveling Agents

Tus neeg sawv cev levelingn yog ib qho additive uas tswj cov ntws ntawm ib txheej tom qab nws ntub cov substrate, coj nws mus rau ib tug du, kawg tiav. Leveling agents hais txog cov teeb meem hauv qab no:

Nto Tension Gradient-Cua Interface

Turbulence tshwm sim los ntawm qhov nro nro gradients ntawm lub puab thiab txheej txheejcovTshem tawm qhov nro gradients yog qhov tseem ceeb rau kev ua tiav ib qho chaw du

Nto Tension Gradient-Substrate Interface

Qhov saum npoo qis dua li cov substrate txhim kho substrate wetting

Txo cov txheej txheem's nto nro txo ​​intermolecular attraction ntawm qhov chaw, txhawb kev khiav zoo

Yam cuam tshuam rau Leveling ceev

Siab viscosity→qeeb theem

Thicker films→nrawm dua qib

Siab dua qhov nro→nrawm dua qib