Txoj kev tiv thaiv hluav taws xob hauv hluav taws xob hauv hluav taws xob
Hauv kev tsim hluav taws xob, hluav taws xob ua hluav taws xob feem ntau ua rau lub tshuab hluav taws xob tsis zoo, thiab txawm ua rau cov khoom hluav taws xob poob lawv txoj haujlwm, ua rau muaj kev piam sij los ntawm kev ua yuam kev. Yog li, electrostatic tiv thaiv hauv kev tsim hluav taws xob tsim kev lag luam tseem ceeb heev, feem ntau yog to taub, Tshawb xyuas txoj cai ntawm hluav taws xob niaj hnub tsim thiab kev tiv thaiv electrostatic hauv hluav taws xob tsim khoom, thiab xaus lub tswv yim ntawm kev tiv thaiv electrostatic kev lag luam thiab kev ntsuas hauv kev tsim.
Tus qauv hluav taws xob yog ib qho tsis pom thiab tsis siv hluav taws xob. Nws nyob rau ntawm qhov khoom. Nws yog qhov tshwm sim ntawm qhov tsis txaus siab ntawm qhov zoo thiab tsis pom zoo nyob hauv lub zos ntau. Nws yog tsim los ntawm kev hloov dua siab tshiab ntawm electrons los yog ions. Qhov tshwm sim electrostatic yog txheej txheem ntawm kev them nqi thiab kev poob siab. Ib lub sij hawm dav dav rau hluav taws xob tshwm sim hauv cov txheej txheem. Piv txwv: kev tsim hluav taws xob, kev ua neeg lub cev, thiab lwm yam tshwm sim.
Lub tshuab hluav taws xob hluav taws xob tau tsim los ntawm cov khoom siv hluav taws xob thiab cov txheej txheem ntawm kev thauj mus los, kev cia khoom, thiab lwm yam ntxiv deb tshaj qhov hluav taws xob ntawm qhov MOS cov cuab yeej, uas feem ntau ua rau kev sib tawg (ib nrab puas ntawm cov khoom), uas ua rau lawv tsis ua qhov khoom. Kev ntseeg.
Yuav kom tswj thiab tshem tawm ESD, qee lub tebchaws tau txhim tsa lub teb chaws, cov tub rog, thiab cov txheej txheem los yog cov cai tswj hwm. Los ntawm kev tsim, siv ua, muag, warehousing, tshuaj ntsuam, warehousing, sib dhos, commissioning, ntim thiab kev thauj mus los ntawm semi-tiav cov khoom thiab tiav lawm cov khoom, muaj cov cai tswj ntawm qhov siv thiab ua, kev siv thiab tswj cov khoom siv tiv thaiv zoo li qub. Cov kev cai tswj nruj heev,
Cov kev pab cuam uas siv cov tshuaj electrostatic yog cov hu ua electrostatically sensitive components (SSDs). Electrostatic sensitive Cheebtsam yog xa mus rau cov txheej txheem loj heev, tshwj xeeb tshaj yog metallized film semiconductors (MOS circuits). Kev ntsuas tiv thaiv electrostatic sib txawv yog coj los sib txawv rau SSD.
Lub hwj chim uas muaj hluav taws xob nyob hauv cov khoom siv hauv hluav taws xob:
(1) Kev ua haujlwm ntawm tib neeg lub cev, kev siv hluav taws xob los ntawm kev sib txhuam, kev sib cuag thiab sib cais nruab nrab ntawm tib neeg thiab khaub ncaws, khau, thom khwm, thiab lwm yam zoo li no yog ib qho tseem ceeb ntawm cov hluav taws xob los ntawm cov khoom siv hluav taws xob. Lub cev hluav taws xob nyob hauv tib neeg lub cev yog qhov tseem ceeb ntawm kev sib zog ntawm lub zog (mos). Tus electrostatic voltage generated los ntawm tib neeg cov kev ua ub no yog kwv yees li 0.5-2KV. Ntxiv mus, cov av noo ntawm huab cua muaj ib qho kev zoo rau lub tshuab hluav taws xob electrostatic, thiab nws yog nce los ntawm ib qho kev txiav txim ntawm qhov ntau nyob rau hauv ib puag ncig qhuav. Ntu 2 qhia tau hais tias kev sib raug zoo ntawm cov txheeb ze ntawm lub cev thiab cov neeg lub cev ua haujlwm.
Thaum tib neeg lub cev raug them nyiaj thiab kov rau hauv av hlau, yuav muaj tshwm sim tawm, thiab tib neeg lub cev yuav tsim ntau hom hluav taws xob tsis zoo. Cov teeb meem ntawm cov tshuaj tiv thaiv no yog hu ua hluav taws xob ua kom muaj zog. Cov lus 3 qhia tau tias lub cev nti ntawm lub cev tib neeg thaum lub sijhawm sib txawv ntawm qhov sib txawv.
(2) Thaum cov tshuaj fiber los yog cov paj rwb tag nrho yog pov npav tawm ntawm lub qhov chaw ua haujlwm thiab lub rooj zaum, ib qho hluav taws xob ntawm 6000V lossis ntau dua qhov hluav taws xob tau tuaj yeem tsim los ntawm cov ris tsho, thiab tib neeg lub cev raug them. Thaum sib cuag nrog lub ntaus ntawv, nws yuav ua rau paug thiab yooj yim ua puas tsuaj.
(3) Cov rwb thaiv tsev ntawm cov roj hmab los yog cov yas yas yog siab li 1013 Ω. Thaum nws rubs tawm tsam hauv av, nws generates hluav taws xob muaj hluav taws xob thiab them nyiaj rau tib neeg lub cev.
(4) Thaum thaij duab, xim zaj duab xis, thiab cov thaij yas yas ntim khoom xa tuaj rau hauv ib lub pob, lub nplhaib ntawm lub cuab yeej thiab cov khoom ntim tau tsim ib qho hluav taws xob ntawm qhov hluav taws xob ntawm ntau pua volts kom puv cov khoom siv.
(5) Muaj ntau lub ntim khoom, roj hmab, thiab cuav los ntawm cov khoom siv hluav taws xob xws li PP (polypropylene), PE (polyethylene), PS (polyvinylidene), PVR (polyurethane), PVC, polyester, thiab pob tshuaj. Cov thawv, PCB racks, etc. tej zaum yuav ua rau 1-3.5KV electrostatic voltage vim kev sib txhuam thiab kev poob siab, thiab tshem tawm cov khoom seem.
(6) Cov hauj lwm ncaj ncees nto, tsim los ntawm kev sib txhuam kom tsim hluav taws xob zoo.
(7) Cov rwb thaiv tsev tsis sib haum ntawm cov pob zeb, waxed polished pem teb, roj hmab ntawv thiab lwm cov plag tsev insulating siab, thiab cov nqi ntawm lub cev tib neeg lub cev tsis yooj yim.
(8) Cov khoom siv hauv tshuab hluav taws xob thiab cov cuab yeej siv: Cov twj siv hluav taws xob ntau thiab AC / dig muag ntws rau cov khoom siv xws li cov laug tshuab, lub tshuab thawv rau sab nrauv, lub tshuab ua kom rov zoo, qhov chaw tso tsheb, cov khoom siv thiab kev tshuaj ntsuam xyuas txhua yam. Yog hais tias cov khoom siv tsis zoo, nws yuav ua rau lub cuab yeej nkag siab tsis meej thaum lub sij hawm tsim kev lag luam. Cov cua kub cua hauv qhov cub thiab lub txee txhuam, thiab CO2 pa hauv lub thawv cua txias lub thawv CO2 tuaj yeem ua kom muaj tus nqi ntau ntawm cov nqi hauv lub cev.
Ntsiab cai ntawm kev tiv thaiv electrostatic:
Hauv kev tsim cov khoom hluav taws xob, nws tsis tuaj yeem tsim kom muaj hluav taws xob zoo li qub. Lub sijhawm ntawm hluav taws xob zoo li qub tsis yog muaj kev pheej hmoo, qhov kev nyab xeeb nta ntawm cov hluav taws xob hauv hluav taws xob thiab lub qhov hluav taws xob uas tawm hauv lub cev. Qhov tseem ceeb ntawm kev tiv thaiv electrostatic yog "kev ntsiag to tshem tawm".
Ntsiab cai ntawm kev tiv thaiv electrostatic:
(1) Tiv thaiv kom tsis txhob muaj hluav taws xob nyob hauv qhov chaw uas cov hluav taws xob tau hluav taws xob tau tsim. Coj ntsuas nyob rau hauv kev nyab xeeb ntau yam.
(2) Tshem tawm ntawm cov hluav taws xob uas twb muaj lawm thiab muab tso tawm tam sim ntawd.
Electrostatic tiv thaiv txoj kev:
(1) Siv cov khoom siv antistatic: Hlau yog tus neeg xyuas pib, uas yuav ua kev puas tsuaj rau lub tshuab loj tuaj ntawm tus neeg xyuas pib. Tsis tas li ntawd, txij li thaum cov khoom siv insulating yog nws rau triboelectric them nyiaj, hlau thiab insulating cov ntaub ntawv yuav siv tsis tau raws li cov khoom siv antistatic. Es tsis txhob, tus neeg hu ua electrostatic tus neeg muaj qhov tsis muaj zog 1 × 10 5 Ω · cm los yog tsawg dua thiab tus electrostatic tus neeg tsav tsheb uas muaj qhov tsis taus ntawm 1 × 10 5 -1 × 10 8 Ω · cm yog siv los ua ib qho kev tiv thaiv khoom. Piv txwv li, cov khoom siv tiv thaiv electrostatic uas feem ntau siv tau los ntawm cov khoom siv roj carbon ntawm cov roj hmab, thiab qhov ua haujlwm saum npoo tswj tau yog 1 × 10 6 Ω · cm los yog tsawg dua.
(2) To lub av thiab av: Siv thaj av uas muaj hluav taws xob los yog tau tshwm sim, thiab muab cov electrostatic tso tawm channel. Txoj kev ntawm kev faus lub hauv paus xaim tsim ib qho "kev ywj pheej" hauv av. Ua qhov nruab nrab hauv av thiab lub ntiaj teb <> (Saib GBJl79 lossis SJ / T10694-1996)
Cov ntaub ntawv pov thawj tiv thaiv kom zoo: Siv cov khoom siv tiv thaiv kom zoo li qub (xws li txee daim nplaum, lub plag pas, qhov hnyav ntawm lub xub pwg, thiab lwm yam) . Tus 1MΩ resistor txuas nrog hauv xov tooj kom paub tseeb tias qhov tam sim no <5ma rau="" hauv="" av,="" hu="" ua="" hauv=""> Lub tshuab hluav taws xob thiab hluav taws xob electrostatic shield feem ntau yog grounded ncaj qha, hu ua nyuaj hauv av.
(3) Kev tshem tawm hluav taws xob ntawm tus neeg xyuas: Cov hluav taws xob uas muaj hluav taws xob nyob rau hauv tus neeg tuaj yeem yuav raug tso tawm los ua rau hluav taws xob tsis zoo mus rau lub ntiaj teb. Lub sij hawm tso tawm hluav taws xob thiab tso tawm ntawm lub cev tawm tuaj yeem tawm los ntawm cov kab hauv qab no: UT = U0L1 / RC. Hauv cov mis, qhov voltage ntawm UT-T sij hawm (V) U0 yog qhov pib voltage (V) R-qhov sib npaug (Ω) C-conductor sib npaug peev (pf).
Nws yog feem ntau yuav tsum tau xau tawm hauv hluav taws xob li 1 xuaj moos. Ntawd yog qhov, qhov voltage yog txo kom muaj kev nyab xeeb hauv qab 1OOV hauv 1 thib ob. Qhov no yuav tiv thaiv kom txhob khiav tawm ntawm kev ceev dhau los thiab qhov tso tawm tam sim no kom loj dhau los ua kom puas rau SSD. Yog U0 = 500V, C = 200pf, yog tias koj xav ua tus UT mus txog 100V hauv 1 thib ob, koj xav tau R = 1.28 × 109Ω. Vim li no, ESD tiv thaiv kab ke siv feem ntau siv 1MΩ tam sim no txwv tsis pub txo cov ntshav tam sim no kom tsawg dua 5mA. Qhov no yog tsim los rau kev xyuam xim ua haujlwm. Yog hais tias tus neeg teb xov tooj yog nyob rau hauv ESD tiv thaiv system, yuam kev kov lub 220V muaj hluav taws xob tsis ua rau muaj kev phom sij.
(4) Kev tshem tawm cov hluav taws xob uas tsis muaj qhov hluav taws xob: Cov hluav taws xob hauv hluav taws xob nyob ntawm insulators, vim hluav taws xob tsis tuaj yeem ntws ntawm cov hluav taws xob, cov hluav taws xob tsis muaj peev xwm tshem tawm tau los ntawm av. Cov kev ntsuas nram no tuaj yeem tau txais:
(a) Siv ib qho ion cua ion-ion kiv cua kom tsim tau zoo thiab tsis zoo ions, uas muaj peev xwm tshem tawm tau hluav taws xob hauv hluav taws xob ntawm lub zog qhov qub. Yuav muab tso ze rau ntawm qhov chaw thiab qhov chaw tso kawm ntawm lub tshuab kev tso kawm.
(b) Siv ib qho kev tshem tawm ntawm lub cev - Ib qho tshem tawm tawm yog ib qho surfactant. Tus neeg raug tshem tawm hauv lub cev tsis muaj peev xwm siv tau los ntxuav lub ntsej muag ntawm qhov ntsuas thiab qhov khoom, thiab hluav taws xob hauv lub nrawm ntawm qhov khoom yuav raug tshem tawm sai sai.
(c) Tswj lub voj ntawm ib puag ncig - Ua kom qhov av ntxiv tuaj yeem ua rau cov hluavtaws ntawm cov khoom uas tsis yog kev coj ua, ua rau qhov nyuaj ntawm qhov khoom siv kom muaj hluav taws xob zoo. Piv txwv, nyob rau hauv ib qho chaw qhuav qhuav nyob rau sab qaum teb, muaj peev xwm ntub tau cov av noo thiab cov cua ntsawj.
(d) Electrostatic shielding-Siv lub ntaub thaiv npog (cage) rau cov khoom siv uas nws muaj qhov hluav taws xob zoo li qub thiab hauv av zoo hauv daim ntaub thaiv (lub npoo).
(5) Txhim kho txoj kev tswj: Txhawm rau tsim hluav taws xob tsawg tsawg ntawm qhov tsim tau cov khoom siv hluav taws xob, tswj cov khoom txig ntawm lub cev, tshem tawm cov hluav taws xob uas twb muaj lawm, thiab tso tawm tam sim ntawd, ntawm cov qauv tsim, , kev khiav lag luam, kev tswj xyuas, thiab lwm yam.
Electrostatic tiv thaiv khoom siv:
(1) Cov tib neeg lub cev los tiv thaiv lub cev muaj xws li tiv thaiv cov hlab pas tiv thaiv, txhua yam, lub kaus mom, hnab looj tes, khau, thom khwm, lwm yam.
(2) Cov txheej txheem thaiv npog muaj xws li los tiv thaiv hauv av zoo li qub, qhov chaw pov thaiv los tiv thaiv zoo li qub, PVC los tiv thaiv zoo li qub, cov ntaub pua plag tsev los tiv thaiv.
(3) Los tiv thaiv zoo li qub: nrog rau cov khoom qub: I: rau cov rooj pas, cov hnab yas los tiv thaiv, cov khoom siv los tiv thaiv teeb meem, cov khoom siv los tiv thaiv zoo li qub thiab cov khoom siv.
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