Nyob rau hauv qhov kev ua tau zoo cov lus ntawm cov khoom siv silicone ua npuas ncauj, qhov zoo li qhov tsis txaus ntseeg ntawm "volume resistivity" feem ntau tsis saib xyuas los ntawm cov tsis yog{0}} cov kws tshaj lij. Txawm li cas los xij, rau txhua tus kws tshaj lij hluav taws xob, tus tsim khoom tsim khoom, thiab cov neeg ua haujlwm tswj kev ua haujlwm zoo, nws tsis yog ib tus lej yooj yim xwb, tab sis yog ib qho tseem ceeb ntawm tus ntsuj plig uas txiav txim siab txog cov khoom siv hluav taws xob kev nyab xeeb thiab ntev - lub sijhawm ua haujlwm kev ntseeg siab.
Raws li kev ua haujlwm ua haujlwm ntawm Sanpu Silicone, peb tau txais cov lus nug txhua hnub los ntawm cov neeg siv khoom txog kev xaiv cov khoom. Niaj hnub no, kuv xav tham nrog cov phooj ywg hauv kev lag luam vim li cas 'volume resistance' yog qhov tseem ceeb 'hard metric' peb yuav tsum qhia meej ua ntej hauv kev sib txuas lus ntawm cov neeg siv khoom.
Ib. Volume resistivity yog dab tsi? Lub ntsiab lus tseem ceeb
Yuav pib nrog, cia peb qhia meej lub ntsiab lus tseem ceeb. Volume resistivity (Vρ), feem ntau ntsuas hauv Ω·cm, piav qhia txog cov khoom siv los tiv thaiv hluav taws xob uas ntws los ntawm nws qhov ntim sab hauv. Cov cuab yeej tseem ceeb no tseem nyob ib puag ncig tsis hais cov khoom zoo li cas lossis qhov loj me.
Ib qho yooj yim analogy:
Xav txog silicone ua npuas ncauj li daim txhuam cev.
Siab ntim resistivity (xws li . 10^15 Ω·cm): zoo li ib tug ntshiab "insulating daim txhuam cev", qhov tam sim no yog heev nyuaj rau nkag mus.
Tsawg ntim resistivity (xws li . 10^3 Ω·cm): zoo li "daim txhuam cev" soaked hauv dej ntsev, tam sim no tau yooj yim ntws los ntawm.
Rau kaw-cov ntaub ntawv ntawm tes silicone ua npuas ncauj, uas yog dav siv nyob rau hauv hluav taws xob teb, peb tab tom nrhiav rau ib tug heev ntim resistivity, thiaj li hais tias nws yog ib tug zoo heev "insulating daim txhuam cev".
2. Vim li cas thiaj tseem ceeb heev? Kev tshuaj xyuas peb lub luag haujlwm tseem ceeb
1. Tus "tus neeg saib xyuas" ntawm kev nyab xeeb hluav taws xob: tiv thaiv kom tsis txhob muaj kev sib tsoo, luv luv thiab tawg
Qhov no yog lub luag haujlwm ncaj qha thiab lub luag haujlwm tseem ceeb ntawm ntim tsis kam. Thaum koj cov khoom lag luam cuam tshuam nrog kev xa hluav taws xob lossis kev sib pauv teeb liab, cov neeg siv hluav taws xob uas muaj peev xwm sib txawv tsuas yog millimeter - theem nrug ntawm ib leeg.
High-voltage application scenarios: Hauv cov roj teeb pob thiab cov khoom siv hluav taws xob tswj hluav taws xob ntawm lub zog tshiab, kev khiav hauj lwm voltages tuaj yeem ncav cuag ntau pua volts. Txhua qhov kev xau los ntawm cov gaskets lossis cov nplhaib sib khi tuaj yeem ua rau lub cev tsis ua haujlwm, kub dhau, lossis txawm tias muaj kev pheej hmoo ntawm kev nyab xeeb. Siab - ntim cov khoom tiv thaiv silicone ua npuas ncauj muab thawj qhov kev tiv thaiv kev tiv thaiv zoo hauv qhov chaw no.
Tsawg voltage rhiab heev scenarios: Txawm nyob rau hauv lub low voltage circuits ntawm lub xov tooj ntawm tes thiab wearable li, lub rwb thaiv tsev tsis ua hauj lwm ntawm cov ntaub ntawv tseem yuav ua rau luv luv Circuit Court thiab cov khoom kub hnyiab, ua rau irreversible kev puas tsuaj.
Cov ntsiab lus: Lub siab ntim tus nqi kuj yog lub hauv paus rau cov khoom kom dhau daim ntawv pov thawj kev nyab xeeb (xws li UL thiab CE) thiab ua kom cov neeg siv kev nyab xeeb.
2. Lub "stabilizer" ntawm cov teeb liab kev ncaj ncees: xyuas kom meej cov ntaub ntawv kis tau tus mob
Nyob rau hauv niaj hnub siab - zaus thiab siab - cov khoom siv sib txuas lus ceev (xws li 5G lub hauv paus chaw nres tsheb thiab cov servers), cov khoom siv silicone ua npuas dej feem ntau yog siv los ua cov khoom siv compression gasket nyob rau hauv cov ntaub thaiv npog electromagnetic.
Lub hauv paus ua rau dielectric poob: Yog hais tias lub ntim resistivity ntawm cov khoom yog tsawg, nws txhais tau hais tias nws yuav tsim tawm tam sim no nyob rau hauv qhov kev txiav txim ntawm ib tug hluav taws xob teb, uas ua rau lub zog noj nyob rau hauv daim ntawv ntawm tshav kub, uas yog hu ua "dielectric poob".
Teeb liab attenuation thiab crosstalk: Ntau dhau dielectric poob degrades siab - zaus teeb liab zoo, ua rau attenuation, qeeb, thiab txawm crosstalk ntawm cov kab teeb liab uas nyob ib sab. Tsuas yog cov ntaub ntawv uas muaj lub siab ntim resistivity tuaj yeem tswj cov khoom siv hluav taws xob ruaj khov, ua raws li 'pob tshab' insulator los khaws cov teeb liab purity thiab kev ncaj ncees.
3. "Daim iav qhov tseeb" rau cov khoom zoo: Reflecting purity thiab txheej txheem sib xws
Volume resistivity yog rhiab heev rau internal micro defects thiab impurities nyob rau hauv cov ntaub ntawv. Nws ua haujlwm zoo li tus kws txiav txim plaub ntug nruj, kuaj qhov purity ntawm cov ntaub ntawv.
impurity qhia: yog ionic impurities, hlau hais los yog impure fillers yog tov rau hauv cov txheej txheem ntau lawm, nws yuav tam sim ntawd tshwm nyob rau hauv lub ntim resistivity, uas ua rau ib tug ntse poob rau hauv nws cov nqi.
Cov txheej txheem kev ruaj ntseg: Peb ua kom muaj kev ua tau zoo sib xws thoob plaws txhua pawg los ntawm kev ntsuas qhov ntsuas qhov ntsuas qhov ntsuas. Qhov ruaj khov thiab siab ntim resistivity qhia txog cov khoom lag luam txhim khu kev qha thiab muaj peev xwm tsim tau tshwj xeeb.
3. Yuav ua li cas xaiv cov khoom tsim nyog rau koj lub lag luam? Cov lus qhia xaiv tus neeg ua haujlwm
Hauv kev xaiv tiag tiag, peb xav kom cov neeg siv khoom ua raws li cov txheej txheem hauv qab no:
Qhia meej txog qib rwb thaiv tsev rau daim ntawv thov scenario:
Strict level (high pressure, high frequency): high performance closed cell foam with volume resistivity>10^14 Ω·cm yuav tsum tau xaiv.
Standard level (consumer electronics, conventional sealing): volume resistivity>10^12 Ω·cm yog lub hauv paus.
Ua tib zoo saib rau ib puag ncig: yog tias daim ntawv thov ib puag ncig yog ntub, nws yog qhov tsim nyog los xaiv cov qauv kaw nrog cov dej nqus dej tsawg, vim tias cov dej nqus dej yuav ua rau lub ntim tsis zoo.
Nkag siab txog daim ntawv teev cov ntaub ntawv thiab thov daim ntawv ntsuam xyuas:
Thov kom paub meej cov khoom tshwj xeeb los ntawm koj tus neeg muag khoom thiab lees paub lawv cov qauv kev xeem (xws li ASTM D257).
Ua tib zoo saib xyuas cov xwm txheej (kub thiab av noo) vim tias lawv tuaj yeem cuam tshuam cov txiaj ntsig kev xeem.
Ua pov thawj lub cev:
Rau cov haujlwm tseem ceeb, kev ntsuas kev ua haujlwm ywj pheej ntawm rwb thaiv tsev yuav tsum tau ua los ntawm cov khoom siv ua ntej batch procurement los xyuas lawv nyob rau hauv simulated ua hauj lwm tej yam kev mob.