Kukurukurirana pane akati wandei akakosha ehunyanzvi ehupfumi e PCB ingi

Kunyangwe mhando yePCB ink iri yakanakisa kana kwete, musimboti, haigone kupatsanurwa kubva mukubatanidzwa kwezvinhu zviri pamusoro zvikuru. Iyo yakanakisa mhando yeinki ndiyo yakazara humiro yesainzi, yepamusoro uye yekuchengetedza kwezvakatipoteredza fomura. Inoratidzwa mu:

viscosity

Ipfupi kune yakasimba viscosity. Iyo inowanzo kuratidzwa neiyo viscosity, ndiko kuti, kuneta kweshear kwekuyerera kwemvura kwakakamurwa neiyo velocity gradient mune yekuyerera yakatenderera nzira, uye iyo yepasi rose unit iri PA / S (Pa. S) kana millipa / S (MPa. S). Mukugadzirwa kwePCB, inoreva kuyerera kweingi inotungamirwa nesimba rekunze.

Kutendeuka hukama hweiyo viscosity zvikamu:

1Pa。 S=10P=1000mPa。 S=1000CP=10dpa.s

Plasticity

Icho chinoreva kuti mushure mekuti ingi yaremara nechisimba chekunze, ichiri kuchengetedza zvivakwa zvayo kusati kwadzikira. Iko kwepurasitiki yeingi inobatsira kuvandudza kudhinda kwakaringana;

Thixotropic

Inki inobatanidza colloidal kana yakamira, uye iyo viscosity inoshanduka painobatwa, inozivikanwawo sekuzunza uye kusagadzikana kusagadzikana;

kufamba

(kuenzanisa) iyo inki inowedzera kutenderera pasi pechiito cheesimba rekunze. Kuyerera ndiko kudzoreredza kweiyo viscosity. Urume hwakabatana neplastiki uye thixotropy yeingi. Iyo yakakura mapurasitiki uye thixotropy, inowedzera kuyerera; Kana iko kufamba kwakakura, chinyorwa chiri nyore kuwedzera. Avo vane hunyoro hushoma vanokombamira kuita netting uye inking, inozivikanwawo seanilox;

Viscoelasticity

Inoreva kugona kweinki kuti ikurumidze kukurumidza mushure mekuchekwa nekutyorwa neanokwenenzvera. Izvo zvinotarisirwa kuti iyo inki deformation kumhanya nekukurumidza uye iyo ink rebound inokurumidza kuitira kuti ive inokodzera kudhinda;

Kuoma

Izvo zvinodikanwa kuti iyo inononoka inki yaoma pachiratidziri, zvirinani. Mushure mekunge inki yaendeswa kune substrate, iyo inokurumidza kuita zvirinani;

kunaka

Iko kukura kwe pigment uye solid particles, PCB inki inowanzo kuve isingasviki 10 μ m. Iyo yakanaka ichave iri pasi pechetatu cheiyo mesh yekuvhura;

spinnability

Pakusimudza inki nefoshoro yeingi, mwero wekuti iyo inki isina kubvaruka inonzi waya kudhirowa. Iyo inki yakareba, uye kune akawanda mafilamu pane iyo ink pamusoro uye yekudhinda pamusoro, izvo zvinoita kuti substrate uye yekudhinda ndiro yakasviba uye kunyange kutadza kudhinda;

Kujeka uye kuviga simba reinki

Kune PCB inki, zvinoenderana nekushandisa kwakasiyana uye zvinodiwa, zvakasiyana zvinodiwa zvinoiswawo pachena kujekesa uye kuviga simba reinki. Kazhinji kutaura, wedunhu inki, inoitisa inki uye hunhu inki inoda yakakwira kuvanda simba. Iyo solder kuramba inoshanduka.

Kemikari kuramba kweingi

Pcbinki ine zvinyoro zviyero zveacid, alkali, munyu uye solvent zvinoenderana zvakasiyana zvinangwa;

Kurwisa kwepanyama kweinki

Pcbinki inofanira kusangana nezvinodiwa zvekunze simba kukwenya kusagadzikana, kupisa kupisa kusagadzikana, mehendi peeling kuramba uye akasiyana akasimba emagetsi mashandiro anoita zvinodiwa;

Kuchengetedza uye kuchengetedzwa kwezvakatipoteredza kweinki

Pcbinki ichava yakaderera chepfu, isina hunhu, yakachengeteka uye zvakatipoteredza zvine hushamwari.

Pamusoro, isu takapfupikisa izvo zvakakosha zvivakwa zvegumi nembiri pcb inks, uye dambudziko re viscosity rakabatana zvakanyanya neanoshanda mukushanda chaiko kwekudhinda kwechidzitiro. Iyo nhanho yeiyo viscosity ine hukama hwakakura pamwe nekutsetseka kwesilika kudhinda screen. Naizvozvo, mune pcb ink inki magwaro ehunyanzvi uye QC mishumo, iyo viscosity inoratidzwa zvakajeka, inoratidza pasi pemamiriro api uye rudzii rweiyo viscosity test chimbo chekushandisa. Mune chaiyo yekudhinda maitiro, kana iyo inki viscosity yakakwira, inokonzeresa kudhinda kuvuza uye kwakakomba sawtooth pamucheto wemufananidzo. Kuti uvandudze kudhinda mhedzisiro, diluent ichawedzerwa kuti iyo viscosity iite zvinodiwa. Asi hazvisi zvakaoma kuwana kuti muzviitiko zvakawanda, kuti uwane iyo yakanaka resolution (resolution), kunyangwe uine yaunoshandisa viscosity, haigone kuzadzikiswa. Sei? Mushure mekudzidza zvakadzama, zvakaonekwa kuti inki viscosity chinhu chakakosha, asi kwete chete. Chimwe chinhu chakakosha thixotropy. Iyo zvakare inokanganisa iko kudhindisa kurongeka.