Inkcazo yokulinganisa

IumgangathoIpropathi yokwaleka ichazwa njengesakhono sokwaleka ukuhamba emva kokufakwa kwesicelo, ngaloo ndlela kwandisa ukuphelisa nakuphi na ukungalingani komphezulu okubangelwa yinkqubo yesicelo. Ngokukodwa, emva kokusetyenziswa kwengubo, kukho inkqubo yokuhamba kunye nokomisa, emva koko ifilimu yokugqoka ecwecwe, egudileyo, kunye neyunifomu yenziwe ngokuthe ngcembe. Ingaba i-coating inokufikelela kwipropati ecaba kunye negudileyo ibizwa ngokuba yi-leveling.

Ukuhamba kwengubo emanzi kunokuchazwa ngemizekelo emithathu:

① imodeli ye-engile yoqhagamshelwano oluhambayo kwi-substrate;

② imodeli yamaza esine yokuhamba ukusuka kumphezulu ongalinganiyo ukuya kumphezulu osicaba;

③ Benard vortex kwicala elithe nkqo. Zihambelana nezigaba ezintathu eziphambili zokulinganisa ifilimu emanzi - ukusabalalisa, ukulinganisa kwangaphambili kunye nokukhawuleza kwexesha, apho ukunyanzeliswa kwendawo, amandla e-shear, utshintsho lwe-viscosity, i-solvent kunye nezinye izinto zidlala indima ebalulekileyo kwinqanaba ngalinye.

 

Umgangatho ophantsi wokusebenza

(1) Imingxuma yokucutheka
Kukho izinto ezisezantsi zoxinzelelo kumphezulu (imithombo yomngxuma oshwabeneyo) kwifilim yokwaleka, ezinomahluko wokuxinezeleka komphezulu kunye nokwaleka okujikelezileyo. Lo mahluko ukhuthaza ukubunjwa kwemingxunya eshwabeneyo, nto leyo ebangela ukuba ulwelo olujikelezileyo luqukuqele kude nalo kwaye lwenza ukudakumba.

(2) Ixolo leorenji
Emva kokumisa, umphezulu wengubo ubonisa ezininzi iiprotrusions ze-semicircular, ezifana neengqungquthela ze-orange peel. Le nto ibizwa ngokuba yi-orenji peel.

(3) Ukutyhafa
Ifilimu yokwambathisa emanzi iqhutywa ngumxhuzulane ukuze yenze iimpawu zokuqukuqela, ezibizwa ngokuba yi-sagging.

 

Izinto ezichaphazela umgangatho

(1) Isiphumo sokuxinana komphezulu wokwaleka ekuphakameni.
Emva kokusetyenziswa kwe-coating, i-interfaces entsha iya kubonakala: i-liquid / solid interface phakathi kwe-coating kunye ne-substrate kunye ne-interface ye-liquid / igesi phakathi kwengubo kunye nomoya. Ukuba ukunyanzeliswa kwe-interfacial ye-interface ye-liquid / solid interface phakathi kwe-coating kunye ne-substrate iphezulu kune-tension ebalulekileyo ye-substrate ye-substrate, i-coating ayinakukwazi ukusasazeka kwi-substrate, kunye neziphene zokulinganisa ezifana nokunciphisa, i-shrinkage cavities, kunye namehlo okuloba aya kwenzeka ngokwemvelo.

(2) Isiphumo sokunyibilika kwinqanaba.
Ngethuba lenkqubo yokumisa ifilimu yepeyinti, ezinye iinqununu ezingenakunyibilika ngamanye amaxesha ziveliswa, nto leyo eyenza i-gradient tension gradient kwaye iholele ekubunjweni kwemingxuma yokunciphisa. Ukongezelela, ekuqulunqweni okuqukethe i-surfactants, ukuba i-surfactant ayihambelani nenkqubo, okanye ngexesha lenkqubo yokumisa, njengoko i-solvent ikhupha, i-concentration yayo iyatshintsha, ibangele utshintsho kwi-solubility, yenze amaconsi angahambelaniyo, kunye nokwenza ukungafani koxinzelelo lwangaphezulu. Oku kunokukhokelela ekwakhekeni kwemingxunya eshwabeneyo.

(3) Isiphumo sobungqingqwa befilimu emanzi kunye nokuthambeka komphezulu woxinzelelo ekuphakameni.
I-Benard vortex - I-evaporation ye-solvent ngexesha lokumisa ifilimu yepeyinti iya kuvelisa iqondo lokushisa, ubuninzi kunye nokwahlukana koxinzelelo phakathi kwendawo kunye nengaphakathi kwifilimu yepeyinti. Lo mahluko uya kukhokelela kwintshukumo ephazamisayo ngaphakathi kwefilimu yepeyinti, yenze into ebizwa ngokuba yi-Benard vortex. Iingxaki zefilimu yepeyinti ezibangelwa yi-Benard vortices azikho kuphela i-peel peel. Kwiinkqubo eziqulethe ngaphezu kwebala elinye lebala, ukuba kukho umahluko othile ekuhambeni kwamasuntswana ebala lebala, i-Benard vortices inokubangela ukudada nokuqhakaza, kwaye ukusetyenziswa komphezulu othe nkqo kuya kubangela imigca yesilika.

(4) Isiphumo sobuchwepheshe bokwakha kunye nokusingqongileyo ekulinganisweni.
Ngethuba lokwakhiwa kunye nenkqubo yokwenza ifilimu yokugubungela, ukuba kukho ukungcola kwangaphandle, kunokubangela iziphene zokulinganisa ezifana nemingxuma yokunciphisa kunye namehlo eentlanzi. Ezi zingcolisi zihlala zivela kwioli, uthuli, inkungu yepeyinti, umphunga wamanzi, njl njl. ukusuka emoyeni, izixhobo zokwakha kunye ne-substrates. Iipropati zengubo ngokwayo (ezifana ne-viscosity yokwakha, ixesha lokumisa, njl.) nazo ziya kuba nefuthe elibalulekileyo kwinqanaba lokugqibela lefilimu yepeyinti. I-viscosity ephezulu kakhulu yokwakha kunye nexesha elifutshane lokumisa lihlala livelisa inkangeleko engafanelekanga.

 

Nanjing Reborn New Materials inikezaii-arhente zokulinganisakuquka i-Organo Silicone kunye ne-Non-silicon ehambelana ne-BYK.


Ixesha lokuposa: May-23-2025