Condutive siliva phala ndi koyeraconductive siliva ufandi composite conductive polima zakuthupi, amene ndi makina osakaniza phala wopangidwa ndi zitsulo conductive siliva ufa, m'munsi utomoni, zosungunulira ndi zina.

Conductive silver slurry imakhala ndi mphamvu zamagetsi zamagetsi komanso magwiridwe antchito okhazikika. Ndi chimodzi mwazinthu zofunika kwambiri pamagetsi ndi ukadaulo wa microelectronic. Amagwiritsidwa ntchito kwambiri m'magulu ophatikizika amagetsi amtundu wa quartz crystal, msonkhano wapadziko lonse wafilimu, zida ndi zina.

Conductive silver phala imagawidwa m'magulu awiri:

1) Polima siliva conductive phala (zophikidwa kapena kuchiritsidwa kupanga filimu, ndi organic polima monga kugwirizana gawo);

2) Sintered siliva conductive phala (sintering kupanga filimu, sintering kutentha pa 500 ℃, galasi ufa kapena okusayidi monga kugwirizana gawo)

Magulu atatu a phala la silver conductive amafunikira mitundu yosiyanasiyana ya tinthu tasiliva kapena zophatikizika ngati zodzaza ma conductive, komanso mapangidwe osiyanasiyana pagulu lililonse amafunikira tinthu tating'ono ta Ag ngati zida zogwirira ntchito. Cholinga chake ndikugwiritsa ntchito ufa wocheperako wa Ag pansi pa njira inayake kapena kupanga filimu kuti akwaniritse kugwiritsa ntchito kwambiri magetsi ndi matenthedwe a Ag, zomwe zikugwirizana ndi kukhathamiritsa kwa filimuyo ndi mtengo wake.

Ma conductivity a polima makamaka amatsimikiziridwa ndi conductive filler siliva ufa, ndipo kuchuluka kwake ndizomwe zimatsimikizira magwiridwe antchito a phala la siliva conductive. Chikoka cha zili siliva ufa pa voliyumu resistivity wa conductive siliva phala akhoza kuperekedwa mu zoyesera zambiri, mfundo ndi yakuti zili tinthu siliva ndi bwino mu osiyanasiyana 70% mpaka 80%. Zotsatira zoyeserera zimagwirizana ndi lamulo. Ichi ndi chifukwa pamene siliva ufa zili zochepa, mwayi wa particles kukhudzana wina ndi mzake ndi yaing'ono, ndi maukonde conductive si kophweka kupanga; pamene zomwe zili ndi zazikulu kwambiri, ngakhale kuti kuthekera kwa tinthu tating'onoting'ono ndi kwakukulu, zomwe zili ndi utomoni ndizochepa, ndipo utomoni wolumikiza tinthu tasiliva timamata, zomwe zimapangitsa kuti kugwirizanako kuchepetsedwa mofanana, kotero kuti mwayi wa particles kukhudzana wina ndi mzake. yafupika, ndipo netiweki ya conductive nayonso ndiyosauka. Pamene zodzaza zodzaza zifika pamlingo woyenerera, ma conductivity a maukonde ndi bwino kukhala ndi resistivity yaing'ono kwambiri ndi conductivity yaikulu. 

Njira yolozera 1 ya conductive silver phala:

Fomula 1:

Conductive silver paste reference formula 2: conductive silver powder, E-44 epoxy resin, tetrahydrofuran, polyethylene glycol

Silver powder: 70% -80%

Epoxy resin: tetrahydrofuran ndi 1: (2-3)

Epoxy resin: wochiritsa ndi 1.0: (0.2~0.3)

Epoxy resin: polyethylene glycol ndi 1.00: (0.05-0.10)

Zosungunulira zotentha kwambiri: butyl anhydride acetate, diethylene glycol butyl ether acetate, diethylene glycol ethyl ether acetate, isophorone

Kugwiritsa ntchito kwakukulu kwa kutentha kochepa komanso kwabwinobwino kuchiritsa guluu wa siliva: ili ndi mawonekedwe a kutentha kocheperako, mphamvu yolumikizana kwambiri, magwiridwe antchito amagetsi okhazikika, komanso oyenera kusindikiza pazenera, kulumikizana kwamagetsi ndi matenthedwe munyengo yotentha yochiritsa, monga makhiristo a quartz, ma infrared pyroelectric detectors, piezoelectric ceramics, potentiometers, machubu akung'anima ndi zotchingira, kukonza dera, ndi zina zambiri. Angagwiritsidwenso ntchito kwa conductive kugwirizana mu makampani wailesi zida , m'malo solder phala kukwaniritsa conductive kugwirizana.

Kusankhidwa kwa wochiritsa kumakhudzana ndi kutentha kwa machiritso a epoxy resin. Ma polyamines ndi polythiamines amagwiritsidwa ntchito pochiritsa pakatentha koyenera, pomwe ma acid anhydrides ndi ma polyacids amagwiritsidwa ntchito ngati machiritso pochiritsa kutentha kwambiri. Ochiritsa osiyanasiyana amakhala ndi machitidwe osiyanasiyana olumikizirana.

Mlingo wa machiritso: ngati kuchuluka kwa machiritso kuli kochepa, nthawi yochiritsa idzatalikitsidwa kwambiri kapena zovuta kuchiza; ngati kwambiri kuchiritsa wothandizira, izo zimakhudza conductivity wa phala siliva ndipo si yabwino ntchito.

Mu dongosolo la epoxy ndi machiritso, momwe mungasankhire chosakaniza choyenera chimagwirizana ndi lingaliro la wopanga chilinganizo, monga kulingalira: mtengo, dilution effect, fungo, kuuma kwa dongosolo, kukana kutentha kwa dongosolo, ndi zina zotero.

Mlingo wocheperako: ngati mlingo wa diluent uli wocheperako, kuthamanga kwa utomoni kumakhala pang'onopang'ono ndipo phala limakhala lowoneka bwino kwambiri; ngati mlingo wa diluent uli waukulu kwambiri, sungathandize kusinthasintha kwake komanso kuchiritsa.