Nheyo dzeKukwirisa maAgents

Overview of Leveling .

Mushure mekushandiswa kwekuputira, kune nzira yekuyerera uye kuomeswa mufirimu, iyo zvishoma nezvishoma inoumba jira rakatsetseka, rakafanana, uye rakafanana. Iko kugona kweiyo coating kuti iwane nzvimbo yakati sandara uye yakatsetseka inodaidzwa kunzi yekuyera pfuma.

Mukushanda kwekuputira maapplication, akajairika hurema senge orange peel, maziso ehove, pinholes, shrinkage cavities, edge retraction, airflow senitivity, pamwe nebrashi mamaki panguva yekukwesha uye roller mamaki. panguva yekushandisa roller-zvose zvinokonzerwa nekusagadzikana zvakanaka-pamwe chete dzinonzi kusaenzana zvakanaka . Izvi zviitiko zvinosvibisa maitiro ekushongedza uye ekudzivirira ekuputira.

Zvinhu zvakawanda zvinopesvedzera kugadzika kwejasi, zvinosanganisira solvent evaporation gradient uye solubility, kusimba kwepamusoro kwejasi, kunyorova kwefirimu ukobvu uye kusimba kwepasi, rheological zvimiro zvejasi.,maitiro ekushandisa, uye mamiriro ezvakatipoteredza. Pakati peizvi, izvo zvinonyanya kuomesesa iko kusimba kwepamusoro kwejasi, kusimba kwepamusoro kwakagadzirwa mufirimu rakanyorova panguva yekugadzira firimu, uye.kugona kweiyo yakanyorova firimu pamusoro kuti aenzane pamusoro tension.

Kuvandudza coating level kunoda kugadzirisa magadzirirwo uye nekubatanidza akakodzera ekuwedzera kuti awane yakakodzera pamusoro tension uye kuderedza tension gradient.

Basa reLeveling Agents

A leveling agentn chinhu chinowedzera chinodzora kuyerera kwejasi mushure mekunge chanyorovesa substrate, ichitungamira kune yakatsetseka, yekupedzisira. Leveling agents anogadzirisa zvinotevera nyaya:

Surface Tension Gradient-Air Interface

Kuvhiringika kunokonzerwa nekukakavadzana kwepamusoro pakati pezvikamu zvemukati nekunze.Kubvisa pamusoro tension gradients kwakakosha kuti uwane nzvimbo yakatsetseka

Surface Tension Gradient-Substrate Interface

Kudzika kwepasi tension pane iyo substrate inovandudza substrate wetting

Kuderedza kupfeka's tension yepamusoro inoderedza kukwezva kwe intermolecular pamusoro, kukurudzira kuyerera kuri nani

Zvinhu Zvinokanganisa Kumhanyisa Kumhanya

Higher viscosity→kudzikamisa zvishoma

Mafirimu akakora→kukurumidza kuenzana

Higher surface tension→kukurumidza kuenzana