Ingxoxo ngezici ezimbalwa zobuchwepheshe ezibalulekile ze PCB uyinki

Noma ngabe ikhwalithi ye-inki ye-PCB inhle kakhulu noma cha, empeleni, ayikwazi ukuhlukaniswa nenhlanganisela yezingxenye ezinkulu ezingenhla. Ikhwalithi enhle kakhulu kayinki ingukubonakaliswa okuphelele kokuvikelwa kwesayensi, okuthuthukile nokwezemvelo kwefomula. Kubonakala ku:

ukubonwa

Imfushane nge-viscosity enamandla. Ngokuvamile kuboniswa nge-viscosity, okungukuthi, ukucindezelwa kwe-shear kokugeleza ketshezi okuhlukaniswe yi-velocity gradient kusiqondisi sendlela yokugeleza, futhi i-unit yamazwe omhlaba yi-PA / S (Pa. S) noma i-millipa / S (MPa. S). Ekukhiqizweni kwe-PCB, kubhekiselwa kuketshezi kukayinki oluqhutshwa ngamandla angaphandle.

Ubudlelwano bokuguqulwa kwamayunithi we-viscosity:

1Pa。 S=10P=1000mPa。 S=1000CP=10dpa.s

Plasticity

Kusho ukuthi ngemuva kokuthi inki ikhubazeke ngamandla angaphandle, isagcina izakhiwo zayo ngaphambi kokukhubazeka. I-plasticity ye-ink iyasiza ukuthuthukisa ukunemba kokuphrinta;

I-Thixotropic

Uyinki wenza i-colloidal uma imile, futhi i-viscosity iyashintsha lapho ithintwa, eyaziwa nangokuthi ukumelana nokuzamazama;

ukuhamba

(ukulinganisa) ukuthi uyinki ukwanda kangakanani ngaphansi kwesenzo samandla angaphandle. Uketshezi ukuphindaphinda kwe-viscosity. Uketshezi kuhlobene ne-plasticity ne-thixotropy ye-inki. Ukukhula kwepulasitiki ne-thixotropy, kukhuphuka uketshezi; Uma ukuhamba kukhulu, ukubhala kulula ukukhulisa. Labo abane-fluidity encane bathambekele ekubambeni inethi naku-inking, okwaziwa nangokuthi i-anilox;

I-Viscoelasticity

Kusho ikhono leyinki lokuphinda lisebenze ngokushesha ngemuva kokunqunywa futhi lephulwe isisuli. Kuyadingeka ukuthi isivinini se-inki deformation siyashesha futhi i-ink rebound iyashesha ukuze ikulungele ukuphrinta;

Ukoma

Kuyadingeka ukuthi i-inki ihamba kancane isoma esikrinini, iba ngcono. Ngemuva kokuthi uyinki udluliselwe ku-substrate, ngokushesha kuba ngcono;

ubuhle

Ubukhulu be-pigment nezinhlayiya eziqinile, i-PCB inki ngokuvamile ingaphansi kuka-10 μ m. Ubucayi buzoba ngaphansi kwengxenye eyodwa kwezintathu zokuvulwa kwemesh;

ukujikeleza

Lapho uthatha uyinki ngefosholo likayinki, izinga lapho u-inki wentambo ungaphuli lubizwa ngokuthi umdwebo wocingo. Uyinki mude, futhi kunemicu eminingi ebusweni beyinki nokuphrinta komhlaba, okwenza i-substrate kanye nokuphrinta ipuleti kungcole futhi kungakwazi nokuphrinta;

Ukungafihli namandla okufihla uyinki

Okwe-PCB inki, ngokusetshenziswa okuhlukile nezidingo, izidingo ezahlukahlukene nazo zibekwa phambili ekubonakaleni nasekufihleni amandla koyinki. Ngokuvamile, uyinki wesifunda, uyinki oqhubayo noyinki womlingiswa kudinga amandla okufihla aphezulu. Ukumelana kwe-solder kuguquguquka kalula.

Ukumelana namakhemikhali kukayinki

I-PCB inki inezindinganiso eziqinile ze-asidi, i-alkali, usawoti kanye ne-solvent ngokuya ngezinhloso ezahlukahlukene;

Ukumelana ngokomzimba kukayinki

I-PCB inki kumele ihlangabezane nezidingo zamandla wangaphandle wokumelana namandla, ukumelana nokushaqeka kokushisa, ukumelana kokuxebuka kwemishini kanye nezidingo ezahlukahlukene zokuqina zikagesi;

Ukuphepha nokuvikelwa kwemvelo kukayinki

I-PCB inki kufanele ibe nobuthi obuncane, obungenaphunga, obuphephile nobungokwemvelo.

Ngenhla, sifingqe izakhiwo eziyisisekelo zama-inki e-PCB ayishumi nambili, futhi inkinga ye-viscosity ihlobene kakhulu ne-opharetha ekusebenzeni kwangempela kokuphrinta kwesikrini. Izinga le-viscosity linobudlelwano obukhulu nobushelelezi bokuphrinta kwesikrini sikasilika. Ngakho-ke, kuma-PCB imibhalo yobuchwepheshe be-inki nemibiko ye-QC, i-viscosity imakwe ngokusobala, ekhombisa ukuthi ngaphansi kwaziphi izimo nokuthi hlobo luni lwensimbi yokuhlola i-viscosity ongayisebenzisa. Enkambisweni yokuphrinta yangempela, uma i-viscosity ye-ink iphezulu, kuzodala ukuvuza kokuphrinta kanye ne-sawtooth ebucayi onqenqemeni lwesibalo. Ukuze uthuthukise umphumela wokuphrinta, i-diluent izokwengezwa ukwenza i-viscosity ihlangabezane nezidingo. Kepha akunzima ukuthola ukuthi ezimweni eziningi, ukuze uthole isixazululo esifanele (isixazululo), noma ngabe usebenzisa yiphi i-viscosity, ngeke kufinyeleleke. Kungani? Ngemuva kokucwaninga okujulile, kwatholakala ukuthi i-viscosity ye-inki yinto ebalulekile, kepha hhayi kuphela. Esinye isici esibalulekile yi-thixotropy. Iphinde ithinte ukunemba kokuphrinta.