Tsanangudzo yekuenzanisa

Thekuenzanapfuma yejasi inotsanangurwa sekukwanisa kwejasi kuyerera mushure mekushandisa, nekudaro kuwedzera kubviswa kwechero kusaenzana kwepamusoro kunokonzerwa nemaitiro ekunyorera. Kunyanya, mushure mokunge kupfekedzwa kunoshandiswa, kune nzira yekuyerera uye kuomeswa, uye ipapo firimu rakadzika, rakatsetseka, uye yunifomu yekuputira inoumbwa zvishoma nezvishoma. Kunyangwe iyo coating inogona kuwana flat uye yakatsetseka pfuma inonzi leveling.

Kufamba kwekunyorova kwemvura kunogona kutsanangurwa nemhando nhatu:

① kuparadzira kuyerera-kusangana nemakona modhi pane substrate;

② sine wave modhi yekuyerera kubva pane isina kuenzana kuenda kune yakati sandara;

③ Benard vortex munzira yakatwasuka. Zvinoenderana nematanho matatu makuru ekunyorova kwemafirimu ekunyorova - kupararira, kutanga uye kunonoka kuenzana, panguva iyo tension yepasi, shear force, viscosity shanduko, solvent uye zvimwe zvinhu zvinoita basa rakakosha padanho rega rega.

Kusakwana kwekuita

(1) Makomba anodonha
Kune yakaderera pamusoro tension zvinhu (shrinkage gomba masosi) ari coating firimu, ane pamusoro tension musiyano pamwe yakapoterera coating. Iyi misiyano inokurudzira kuumbwa kwemakomba ekuderera, zvichiita kuti mvura yakatenderedza mvura iyerere kubva pairi uye kuumba kuora mwoyo.

(2) Pepa reorenji
Mushure mekuoma, pamusoro pekuputira kunoratidza akawanda semicircular protrusions, akafanana nemafuta e orange peel. Chiitiko ichi chinonzi orange peel.

(3) Kuora mwoyo
Iyo firimu yakanyorova yekuputira inofambiswa negiravhiti kuti iite kuyerera mamaki, iyo inonzi sagging.

Zvinhu zvinokanganisa kuenzana

(1) Mhedzisiro yekuputira pamusoro petension pakuenzanisa.
Mushure mekuputira kunyorera, mitsva inopindirana ichaonekwa: iyo yemvura / yakasimba interface pakati pekupfeka uye substrate uye iyo yemvura / gasi interface pakati pekupfeka nemhepo. Kana iyo yepakati tension yemvura / yakasimba interface pakati pekupfekedza uye substrate yakakwira kupfuura iyo yakaoma yepasi tension ye substrate, iyo yekupfekedza haizokwanisi kupararira pane substrate, uye kuremara kwekuyera senge shrinkage, shrinkage cavities, uye ziso rehove rinongoitika.

(2) Mhedzisiro yekunyungudika pakuenzanisa.
Munguva yekuomeswa kwefirimu yepende, dzimwe nguva zvisingasviki zvimedu zvinogadzirwa, izvo zvinoita kuti pave nepamusoro-soro gradient uye zvinotungamirira pakuumbwa kwemakomba ekuderera. Mukuwedzera, mukugadzirwa kune ma surfactants, kana iyo surfactant isingaenderani nehurongwa, kana panguva yekuomeswa, sezvo solvent inoputika, kugadzirisa kwayo kunoshanduka, zvichiita kuti kushanduka kwekunyungudika, kuumba madonhwe asingaenderani, uye kuumba kupesana kwepamusoro. Izvi zvinogona kutungamirira kukugadzirwa kwemakomba ekuderera.

(3) Mhedzisiro yekunyorova kwefirimu ukobvu uye pamusoro pesimba gradient pakuyera.
Benard vortex - Iyo evaporation yekunyungudika panguva yekuomeswa kwefirimu repende inoburitsa tembiricha, density uye kusawirirana kwepamusoro mutsauko pakati pepamusoro uye mukati mepende yefirimu. Iyi misiyano ichatungamira kune kusagadzikana kufamba mukati mepende yefirimu, kugadzira iyo inonzi Benard vortex. Matambudziko emafirimu ependi anokonzerwa naBenard vortices haasi erenji peel chete. Mune masisitimu ane inopfuura pigment imwe, kana paine imwe mutsauko mukufamba kwe pigment particles, Benard vortices inogona kukonzera kuyangarara nekutumbuka, uye vertical surface application inokonzeresa mitsetse yesirika.

(4) Mhedzisiro yetekinoroji yekuvaka uye nharaunda padanho.
Munguva yekuvaka uye firimu-kugadzira maitiro ekuputira, kana kune kunze kwekusvibisa, zvinogona kukonzera kukanganisa kwekuenzanisa senge shrinkage maburi uye maziso ehove. Izvi zvinosvibisa zvinowanzobva mumafuta, huruva, mhute yepende, mhute yemvura, nezvimwewo kubva kumhepo, maturusi ekuvaka uye substrates. Izvo zvimiro zvejasi pachayo (zvakadai sekuvaka viscosity, nguva yekuomesa, nezvimwewo) zvichavawo nemhedzisiro yakakosha padanho rekupedzisira repende yefirimu. Yakanyanya kukwirisa viscosity yekuvaka uye yakanyanyisa kuomesa nguva inowanzo buritsa chitarisiko chisina kuenzana.

Nanjing Reborn New Materials inopaleveling agentskusanganisira Organo Silicone uye Isiri-silicon iyo inofanana neBYK.