Iyo aluminium substrate isimbi-based copper clad laminate ine yakanaka kupisa kupisa basa. Iyo iplate-yakafanana nezvinhu yakagadzirwa nemagetsi egirazi fiber jira kana zvimwe zvinosimbisa zvinhu zvakamisikidzwa neresin, resin imwechete, nezvimwewo sechinhu chinonamira chinomisikidza, chakafukidzwa nefoiri yemhangura kune rimwe kana mativi ese uye inopisa yakadzvanywa, inonzi aluminium- based copper-clad plate . Kangxin Circuit inosuma kuita kwealuminium substrate uye kurapwa kwepamusoro kwezvinhu.
Aluminium substrate performance
1.Excellent heat dissipation performance
Aluminium-based copper-clad plates ane yakanakisa kupisa kupisa kuita, inova ndiyo inonyanya kuzivikanwa yerudzi urwu rweplate. Iyo PCB yakagadzirwa nayo haigone kudzivirira zvinobudirira tembiricha yekushanda yezvikamu uye substrates dzakaremerwa pairi kubva pakukwira, asiwo nekukurumidza kupisa kunogadzirwa nemagetsi amplifier components, high power components, big circuit power switches nezvimwe zvinhu. Iyo zvakare yakagovaniswa nekuda kwehudiki hwayo, huremu huremu (2.7g/cm3), anti-oxidation, uye mutengo wakachipa, saka yave yakanyanya kuchinjika uye yakakura huwandu hwemapepa akaumbwa musimbi-based copper clad laminates. The saturated thermal resistance of the insulated aluminium substrate is 1.10 ℃/W uye thermal resistance is 2.8℃/W, iyo inovandudza zvikuru fusing current yewaya yemhangura.
2.Kuvandudza kushanda uye hutano hwekugadzira
Aluminium-based copper-clad laminates ane high mechanical simba uye kuoma, izvo zviri nani kudarika rigid resin-based copper-clad laminates uye ceramic substrates. Inogona kuona kugadzirwa kweakakura-nzvimbo akadhindwa mabhodhi pasimbi substrates, uye inonyanya kukodzera kukwirisa zvinorema zvinorema pane akadaro substrates. Uye zvakare, iyo aluminium substrate inewo yakanaka flatness, uye inogona kuunganidzwa uye kugadziriswa pane substrate nenyundo, riveting, nezvimwe yakavakirwa mhangura yakapfeka laminate haigoni.
3.High dimensional kugadzikana
Kune akasiyana-siyana emhangura akapfeka laminates, pane dambudziko rekupisa kwekuwedzera (dimensional kugadzikana), kunyanya kupisa kwekuwedzera muhukobvu kutungamira (Z-axis) yebhodhi, iyo inokanganisa kunaka kwemakomba ane metallized uye wiring. Chikonzero chikuru ndechekuti mutsara wekuwedzera coefficients emaplate akasiyana, akadai semhangura, uye mutsara wekuwedzera coefficient ye epoxy glass fiber cloth substrate ndeye 3. Kuwedzera kwemutsara kwezviviri zvakasiyana zvikuru, izvo zviri nyore kukonzera musiyano mukupisa kwekuwedzera kwe substrate, zvichiita kuti dunhu remhangura uye gomba rakagadzirwa nesimbi riputse kana kukuvara. Iyo mutsara yekuwedzera coefficient yealuminium substrate iri pakati, idiki zvakanyanya pane general resin substrate, uye iri padyo nemutsara wekuwedzera coefficient yemhangura, iyo inobatsira kuve nechokwadi chemhando uye kuvimbika kwedunhu rakadhindwa.
Kurapa kwepamusoro kwealuminium substrate zvinhu
1. Deoiling
Iyo yepamusoro yealuminium-based plate yakafukidzwa neoiri layer panguva yekugadzira uye kutakura, uye inofanirwa kucheneswa isati yashandiswa. Nheyo iyi ndeye kushandisa peturu (general aviation peturu) sechinhu chinonyungudutsa, chinogona kunyungudika, wobva washandisa mvura inonyungudika yekuchenesa mumiririri kubvisa mavara emafuta. Shamba pasi nemvura inoyerera kuti ichene uye isina madonhwe emvura.
2. Degrease
Iyo aluminium substrate mushure mekurapwa kwepamusoro ichine isina kubviswa girisi pamusoro. Kuti uibvise zvachose, inyika neine alkali sodium hydroxide yakasimba pa50 ° C kwemaminitsi mashanu, uye wogeza nemvura yakachena.
3. Alkaline etching. Iyo yepamusoro yealuminiyumu ndiro sechigadziko chinofanirwa kuve nehumwe hukasha. Sezvo aruminiyamu substrate uye aluminium oxide firimu layer iri pamusoro ese ari maviri amphoteric zvinhu, pamusoro peiyo aluminium base material inogona kuomeswa nekushandisa acidic, alkaline kana composite alkaline solution system. Uye zvakare, zvimwe zvinhu uye zvinowedzera zvinoda kuwedzerwa kune roughening mhinduro kuzadzisa zvinotevera zvinangwa.
4. Chemical polishing (dipping). Nekuti iyo aluminium base material ine mamwe masimbi asina kuchena, zviri nyore kuumba inorganic compounds inonamira pamusoro peiyo substrate panguva ye roughening process, saka iyo inorganic compounds inoumbwa pamusoro inofanira kuongororwa. Zvinoenderana nemhedzisiro yekuongorora, gadzira yakakodzera dipping solution, uye isa iyo yakaomeswa aluminiyamu substrate mune yekunyudza mhinduro kuti uve nechokwadi cheimwe nguva, kuitira kuti pamusoro pearuminiyamu ndiro yakachena uye ichipenya.