Conductive sirivheri paste pamwe yakachenaconductive sirivheri podandeye composite conductive polymer zvinhu, inova mechaniki musanganiswa paste inoumbwa nesimbi conductive sirivheri poda, base resin, solvent uye additives.
Conductive sirivheri slurry ine yakanakisa magetsi conductivity uye yakagadzikana kuita.Icho chimwe chezvinhu zvakakosha zvakakosha mumunda wemagetsi uye microelectronic tekinoroji.Inoshandiswa zvakanyanya mumubatanidzwa wedunhu quartz crystal electronic components, gobvu firimu redunhu redunhu musangano, instrumentation uye mamwe minda.
Conductive sirivheri paste yakakamurwa kuita mapoka maviri:
1) Polymer sirivheri conductive paste (yakabikwa kana kuporeswa kugadzira firimu, ine organic polymer sechikamu chekubatanidza);
2) Sintered sirivheri conductive paste (sintering kugadzira firimu, sintering tembiricha pamusoro 500 ℃, girazi poda kana oxide sechikamu chekubatanidza)
Iwo matatu mapoka esirivha conductive paste anoda akasiyana marudzi esirivheri zvimedu kana musanganiswa se conductive mafirita, uye kunyange akasiyana magadzirirwo muchikamu chega chega anoda akasiyana maAg masisitimu seanoitisa anoshanda zvinhu.Chinangwa ndechekushandisa hushoma hweAg hupfu pasi peimwe fomula kana firimu rekugadzira maitiro kuti uwane iyo yakanyanya kushandiswa kweAg yemagetsi uye yekupisa conductivity, ine chekuita nekugadzirisa kwekuita kwefirimu uye mutengo.
Iyo conductivity yepolymer inonyanya kutariswa neiyo conductive filler sirivheri poda, uye huwandu hwayo ndiyo inotaridza kuita kwekuita kweiyo conductive sirivheri paste.Iyo pesvedzero yezviri mukati mesirivheri poda pane vhoriyamu resistivity ye conductive sirivheri paste inogona kupihwa mukuyedza kwakawanda, mhedziso ndeyekuti zvirimo zvesirivheri particle ndiyo yakanakisa muhuwandu hwe70% kusvika 80%.Mibairo yekuedza inoenderana nemutemo.Izvi zvinodaro nekuti kana sirivheri yehupfu idiki, mukana wezvimedu zvinosangana kune mumwe mudiki, uye iyo conductive network haisi nyore kugadzira;kana zvirimo zvakakurisa, kunyangwe mukana wekusangana kwechikamu chakakwira, iyo resin yemukati idiki, uye resin inobatanidza zvimedu zvesirivheri inonamira, zvichiita kuti iyo yekubatanidza iwedzere kuderedzwa, kuitira kuti mukana wezvimedu zvinosangana. yakaderedzwa, uye iyo conductive network yakashata zvakare.Kana iyo yekuzadza inosvika pachiyero chakakodzera, iyo conductivity yetiweki yakanakisa kuve nediki resistivity uye yakakura conductivity.
Reference formula yekutanga ye conductive sirivheri paste:
Formula 1:
| Ingredients | Misa muzana | Ingredient tsananguro |
| 75-82% | Conductive filler | |
| Bisphenol A mhando epoxy resin | 8-12% | Resin |
| Acid anhydride kurapa mumiririri | 1-3% | Hardener |
| Methyl imidazole | 0-1% | Accelerator |
| Butyl acetate | 4-6% | Kusashanda diluent |
| Active diluent 692 | 1-2% | Active diluent |
| Tetraethyl titanate | 0-1% | Adhesion promoter |
| Polyamide wakisi | 0-1% | Anti-kugadzirisa agent |
Conductive silver paste reference formula 2: conductive sirivheri poda, E-44 epoxy resin, tetrahydrofuran, polyethylene glycol.
Sirivha hupfu: 70% -80%
Epoxy resin: tetrahydrofuran iri 1: (2-3)
Epoxy resin: kurapa mumiririri ndeye 1.0: (0.2~0.3)
Epoxy resin: polyethylene glycol iri 1.00: (0.05-0.10)
High boiling point solvents: butyl anhydride acetate, diethylene glycol butyl ether acetate, diethylene glycol ethyl ether acetate, isophorone.
Iko kushandiswa kukuru kweyakadzika uye yakajairika tembiricha kurapa conductive sirivheri glue: ine hunhu hwekudzikira kupisa tembiricha, yakakwirira bonding simba, yakagadzikana kushanda kwemagetsi, uye yakakodzera kudhinda skrini, yemagetsi uye yekupisa conductivity bonding mune yakajairwa tembiricha yekurapa welding nguva, senge. quartz crystals, infrared pyroelectric detectors, piezoelectric ceramics, potentiometers, flash tubes uye shielding, kugadziriswa kwedunhu, nezvimwewo .. Inogonawo kushandiswa pakugadzirisa bonding muindasitiri yezviridzwa zveredhiyo, kutsiva solder paste kuti uwane conductive bonding.
Sarudzo yekurapa mumiririri ine hukama nekudziya kwekurapa kweiyo epoxy resin.Polyamines uye polythiamines anowanzo shandiswa kurapa pane zvakajairika tembiricha, nepo asidhi anhydrides nemapolyacids anowanzo shandiswa seanorapa ekurapa patembiricha yepamusoro.Mhando dzakasiyana dzekurapa dzine maitiro akasiyana-siyana ekubatanidza.
Dosage yeanorapa agent: kana huwandu hweanorapa hudiki, nguva yekurapa ichawedzerwa zvakanyanya kana kunetsa kurapa;kana yakawandisa kurapa mumiririri, zvinokanganisa conductivity yesirivheri paste uye haigone kushanda.
Mune epoxy uye inorapa agent system, maitiro ekusarudza akakodzera diluent ane hukama nezano remugadziri weformula, sekufunga: mutengo, dilution mhedzisiro, kunhuhwirira, kuoma kwehurongwa, tembiricha kuramba, nezvimwe.
Diluent dosage: kana iyo diluent dosage iri diki zvakanyanya, kukurumidza kunyungudika kweresin kuchanonoka uye paste ichaita kunge yakanyanya viscous;kana iyo diluent dosage yakakurisa, haikodzeri kushanduka kwayo uye kurapwa.
Nguva yekutumira: Kubvumbi-21-2021