Personal Electronic Devices Adhesive
Kushandiswa kwezvinonamira uye zvisimbiso muindasitiri yemagetsi zvino kwapararira uye vanopa zvakananga kwete chete mukugadzirwa kwezvigadzirwa zvemagetsi asiwo nekushanda kwavo kwenguva refu uye hupenyu hurefu. Kushandiswa kukuru kwezvinonamira muindasitiri yemagetsi kunosanganisira kusungirirwa kwepamusoro-mount components (SMCs), waya kutema uye potting kana encapsulating zvikamu. Chivakwa chekutanga cheindasitiri yemagetsi ibhodhi rakadhindwa wiring kana, sezvainowanzonzi, iro rakadhindwa redunhu bhodhi (PCB). Iyo PCB inoshandisa zvinhu zvinonamira mukubatanidza pamusoro-yegomo zvinhu, waya yekumisikidza, conformal coatings uye mu encapsulating (potting) zvikamu.
Matanho matatu akasiyana ekugadzirisa anofanirwa kutariswa kana uchisarudza chinonamira chemagetsi (kana chero chimwe) maapplication: iyo isina kuporeswa kana yemvura-resin chikamu, yekurapa (yekuchinja) chikamu uye chakaporeswa kana chakasimba-chinhu chikamu.
Kuita kweanonamirwa anonamirwa ndiko kwanyanya kukosha nekuti kunokanganisa kuvimbika.
Iyo nzira yekushandisa yekunamatira yakakoshawo zvakanyanya, kunyanya nekuda kwekudiwa kwekuona kuti yakaringana mari inoshandiswa munzvimbo chaiyo.
Nzira huru dzekushandisa zvinonamira mumagetsi maapplication kudhinda skrini (kudzvanya chinonamira kuburikidza nemapatani muchiratidziro), kufambisa pini (uchishandisa akawanda-pini magidhi anoburitsa mapatani emadonhwe anonamira kubhodhi) uye jekiseni yekushandisa (mumo mune mapfuti ekunamira. inounzwa nesirinji inodzorwa nepressure). Sirinji yekushandisa ingangove ndiyo inonyanya kufarirwa nzira, kazhinji nenzira yemasirinji anodzorwa nemagetsi ekugadzira zvine mwero emhando dzakasiyana dzePCB.
Mhando dzakasiyana-siyana dzekunamatira zvino dzichatariswa.
Nemasikirwo awo, akawanda anonamira, ese ari organic uye inorganic, haasi emagetsi conductive. Izvi zvinoshanda kumhando huru dzinoshandiswa mumagetsi ekushandisa senge epoxies, acrylics, cyanoacrylates, silicones, urethane acrylates uye cyanoacrylates. Nekudaro, mune akawanda maapplication, anosanganisira akabatanidzwa maseketi uye pamusoro-moump zvishandiso, magetsi emagetsi ekunamira anodiwa.
Iyo yakajairika nzira yekushandura isina-conductive adhesives kune emagetsi conductive zvinhu ndeyekuwedzera yakakodzera filler kune base zvinhu; kazhinji iyo yekupedzisira ndeye epoxy resin.
Yakajairika mafirita anoshandiswa kupa magetsi conductivity isirivha, nickel uye kabhoni. Sirivha ndiyo inonyanya kushandiswa. Iwo maconductive adhesives pachawo angave ari mumvura kana pre-fomu (akasimbiswa adhesive mafirimu anofa-akachekwa asati abatana kune chimiro chinodiwa).
Kune marudzi maviri emagetsi conductive adhesives - isotropic uye anisotropic. Anisotropic adhesives inoitisa mativi ese asi isotropic adhesive inoitisa yakamira yakatwasuka (z-axis) kwakananga chete uye nekudaro uni-directional.
Iwo isotropic adhesives anozvikweretesa kune yakanaka-mutsara yekubatanidza. Izvo zvinofanirwa kucherechedzwa kuti, zvinobatsira sezvinomisikidza zvinonamira, hazvigone kungo 'kudonhedzwa mukati' senge solder dzimwe nzira. Hadzina kunaka nerata (kana tincontaining alloys) kana nealuminium, kana pane maburi mahombe kana paangango sangana nekunyorova (kunyorova, kunyorova) mumamiriro ekusevhisi.
Magetsi conductive adhesives
Nemasikirwo awo, akawanda anonamira, ese ari organic uye inorganic, haasi emagetsi conductive. Izvi zvinoshanda kumhando huru dzinoshandiswa mumagetsi ekushandisa senge epoxies, acrylics, cyanoacrylates, silicones, urethane acrylates uye cyanoacrylates. Nekudaro, mune akawanda maapplication, anosanganisira akabatanidzwa maseketi uye pamusoro-moump zvishandiso, magetsi emagetsi ekunamira anodiwa.
Iyo yakajairika nzira yekushandura isina-conductive adhesives kune emagetsi conductive zvinhu ndeyekuwedzera yakakodzera filler kune base zvinhu; kazhinji iyo yekupedzisira ndeye epoxy resin.
Yakajairika mafirita anoshandiswa kupa magetsi conductivity isirivha, nickel uye kabhoni. Sirivha ndiyo inonyanya kushandiswa.
Iwo maconductive adhesives pachawo angave ari mumvura kana pre-fomu (akasimbiswa adhesive mafirimu anofa-akachekwa asati abatana kune chimiro chinodiwa).
Kune marudzi maviri emagetsi conductive adhesives - isotropic uye anisotropic. Anisotropic adhesives inoitisa mativi ese asi isotropic adhesive inoitisa yakamira yakatwasuka (z-axis) kwakananga chete uye nekudaro uni-directional.
Iwo isotropic adhesives anozvikweretesa kune yakanaka-mutsara yekubatanidza. Izvo zvinofanirwa kucherechedzwa kuti, zvinobatsira sezvinomisikidza zvinonamira, hazvigone kungo 'kudonhedzwa mukati' senge solder dzimwe nzira. Hadzina kunaka nerata (kana tincontaining alloys) kana nealuminium, kana pane maburi mahombe kana paangango sangana nekunyorova (kunyorova, kunyorova) mumamiriro ekusevhisi.
Thermally conductive adhesives
Miniaturization yemagetsi yemagetsi inogona kukonzera matambudziko ekupisa kwekuvaka, izvo zvinogona kukonzera kutadza kusati kwasvika kwezvikamu zvemagetsi kana tembiricha yavo yekushanda yakapfuura. Thermally conductive adhesive inogona kushandiswa kupa kupisa-kuitisa nzira, kusungirira transistors, diode kana mamwe magetsi emagetsi kune akakodzera kupisa sinks kuti ive nechokwadi chekuti kupisa-up hakuitike.
Metallic (electrically conductive) kana isiri-metallic (insulating) powders inosanganiswa mukugadzirwa kwekunamatira kuti iite high-viscosity (paste) adhesives, iyo inonyanya kupisa kupisa (mukuenzanisa neadhesives isina kuzadzwa). Iyo inonyanya kuzivikanwa thermally conductive masisitimu inogadzirwa ne epoxy, silicone uye acrylics.
Ultraviolet-inoporesa adhesives
Chiedza chinonamira, machira uye encapsulants zviri kushandiswa muindasitiri yekugadzira zvemagetsi nekuwedzera frequency nekuti zvinosangana nezvinodiwa zvezvinhu uye kugadzirisa mukati meindasitiri iyi. Izvo zvinhu zvinosanganisira zvinodiwa kwezvakatipoteredza (zvinokuvadza nharaunda zvinonyungudutsa uye zvinowedzera hazvidiwe), kugadzira-goho kuvandudza uye mutengo wechigadzirwa. Magetsi anonamira emwenje ari nyore kushandisa, uye anokurumidza kurapwa pasina kudiwa kwepamusoro tembiricha yekurapa.
Iwo anonamira anowanzo acrylic-based formulations uye ane mafoto-initiators ayo, kana aitwa neultraviolet mwaranzi, anoumba mahara radicals kutanga iyo polymer-forming (kuporesa) maitiro. Chiedza cheUltraviolet chinofanira kukwanisa kupinda mukati meresin isina kupora - dhizaini yemagetsi ekunamira. Madhipoziti eresin ane rima-ruvara, asingasvikike kana akakora zvakanyanya anonetsa kurapa.
