Thermal paste: nws yog dab tsi, hom, nws siv li cas ...

thermal muab tshuaj txhuam

La thermal muab tshuaj txhuam yog ib yam khoom siv dav hauv lub ntiaj teb ntawm electronics. Feem ntau ua ib qho kev sib txuas los txhim kho cov cua kub dissipation ntawm kev ua haujlwm siab ua cov chips thiab heatsinks. Tab sis nws tsis yog tib qhov chaw uas nws siv, nws kuj yuav siv tau rau siab zog transistors, mus peltier effect daim hlau, Thiab lwm yam

Hauv kab lus no koj yuav paub qhov tseeb yog cov khoom no, nws txoj haujlwm, nws yuav siv li cas kom raug, hom uas muaj nyob hauv kev ua lag luam thiab cov npe zoo tshaj plaws uas koj tuaj yeem yuav.

Dab tsi yog thermal paste?

thermal muab tshuaj txhuam

Nws tuaj yeem raug hu ua ntau txoj hauv kev: thermal muab tshuaj txhuam, thermal silicone, thermal roj, lwm. Tag nrho cov ntsiab lus no yog synonymous, thiab tsis muaj qhov sib txawv ntawm lawv. Hais txog ib yam khoom uas muaj thermal conductivity zoo los pab kom cov cua sov zoo dua thaum muaj kev sib tshuam ntawm ob qhov chaw. Piv txwv li, thaum lub heatsink siv rau ntawm lub nti, los sau rau hauv "khoom" uas tuaj yeem nyob nruab nrab ntawm ib qho chaw thiab lwm qhov thiab yog li ua kom muaj txiaj ntsig zoo dua.

Thermal paste muaj cov ntsiab lus sib txawv hauv nws muaj pes tsawg leeg:

  • Polymerizable kua matrix: nws yog lub hauv paus ntawm cov muab tshuaj txhuam, uas ua rau nws ua kua dej. Feem ntau, cov gels los yog pastes no feem ntau yog ua los ntawm silicones (li no lawv lub npe), epoxy resins, acrylates, urethanes, thiab lwm yam, thiab lawv tuaj yeem npaj rau hauv cov nplaum los yog cov ntaub qhwv es tsis txhob muab tshuaj txhuam.
  • Qhov: Cov fillers no feem ntau sawv cev nruab nrab ntawm 70 thiab 80% ntawm cov muaj pes tsawg leeg ntawm thermal paste. Hauv qhov no, lawv tuaj yeem ua tau ntau yam, xws li tooj liab, txhuas, nyiaj, zinc oxide, boron nitride, thiab lwm yam.

Vim tag nrho cov muaj pes tsawg leeg, qhov no thermal paste tuaj yeem ua tau lom yog nqos. Yog li ntawd, yuav tsum tau ceev faj thaum siv nws, ntxuav tes yog tias tsis muaj hnab looj tes thiab tsis txhob tso nws hauv qhov ncav cuag me nyuam. Tsis tas li ntawd, nws kuj ua rau tawv nqaij, qhov muag, thiab cov mucous membranes, yog li koj yuav tsum siv cov khoom tiv thaiv thaum tuav nws. Qee cov yeeb yaj kiab qhia qhia tias lawv siv nws li cas txawm tias los ntawm tes, tab sis qhov no yuav tsum tsis txhob ua.

Yog tias koj nyob rau pem hauv ntej ntawm cov khoom siv hluav taws xob tshiab, thiab koj tsis paub zoo yog tias koj tuaj yeem siv thermal paste rau ntawm nws qhov chaw lossis qhov twg siv, Kuv xav kom koj ib txwm nyeem cov ntawv cov ntaub ntawv manufacturers. Hauv cov ntaub ntawv no koj yuav pom cov ntaub ntawv hais txog nws, ntxiv rau qhov kev xav tau dissipation, lub zog, qhov siab tshaj plaws thiab qhov ntsuas kub tsawg kawg nkaus txhawb nqa, qhov tseem ceeb xws li junction-case, junction-air, thiab lwm yam.

Propiedades

CPU

Thermal paste tsis tsuas muaj cov khoom ntawm thermal conductivity, tab sis kuj rau lwm tus, thiab nws yog ib qho tsim nyog yuav tsum tau xyuam xim tshwj xeeb rau lawv, vim lawv tuaj yeem ua rau kev siv raws li cov khoom siv hluav taws xob. Cov tshuaj no yog tshwj xeeb yog characterized los ntawm:

  • Thermal conductivity: Nws yog ib qho tseem ceeb tshaj plaws nyob rau hauv lub thermal paste, vim nws yog ib yam khoom uas nws lub hom phiaj yog kom dissipate tshav kub. Yog li ntawd, lawv yuav tsum muaj peev xwm ua kom sov. Cov chav xws li watt ib meter-Kelvin yog siv los ntsuas qhov ntsuas no. Nyob ntawm seb hom pasta lossis hom, qhov kev coj ua no tuaj yeem sib txawv heev. Piv txwv li, cov tooj liab, nyiaj, pob zeb diamond lossis txhuas muaj cov khoom zoo heev hauv qhov no, lwm tus xws li zinc oxide, aluminium nitride, thiab lwm yam, tsis yog ntau heev.
  • Hluav taws xob conductivity: Nws muaj feem xyuam rau ib qho teeb meem uas thermal paste tuaj yeem ua tau yog tias nws ua tau hluav taws xob zoo. Feem ntau, pasta manufacturers nyiam qhia cov hluav taws xob tiv thaiv uas lawv cov khoom nthuav tawm. Qhov siab dua (ohms ib centimeter), qhov insulator zoo dua, yog li nws tuaj yeem ua tau zoo dua. Yog tias qhov muab tshuaj txhuam tsis zoo thiab ua haujlwm zoo ces nws tuaj yeem ua rau muaj teeb meem luv luv yog tias nws tuaj yeem cuam tshuam nrog qee qhov lem lossis pins.
  • Thermic dilatation coefficient: yog lwm chav tsev uas yuav tsum xyuam xim rau. Nyob rau hauv cov ntaub ntawv no, koj yuav tsum nrhiav ib tug muab tshuaj txhuam uas nws coefficient yog qhov tsawg tshaj plaws ua tau, uas yog, thiaj li hais tias nws expands tsawg npaum li sai tau nrog tshav kub. Txwv tsis pub, nws tuaj yeem ua rau muaj teeb meem nro ntawm cov khoom.

Hom thermal muab tshuaj txhuam

cua sov ncoo

Muaj ntau ntau hom thermal muab tshuaj nyob rau hauv kev ua lag luam, thiab nws yog ib qho tseem ceeb kom paub qhov txawv ntawm txhua qhov kev daws teeb meem kom paub seb yuav xaiv qhov twg hauv txhua qhov xwm txheej, vim lawv txhua tus muaj lawv tus kheej. zoo thiab tsis zoo:

  • Lub tshuab cua sov: Nws yog cov nplaum los yog cov ntaub qhwv uas ua raws li cov khoom siv hluav taws xob thiab nws lub hom phiaj yog tib yam li thermal paste, tab sis nws tuaj yeem siv tau yooj yim dua, thiab tsis cuam tshuam rau kev tswj kom muaj nuj nqis, xyuas kom meej tias nws nthuav dav homogeneously, thiab lwm yam., txij li thaum nws tsuas yog lo rau ntawm qhov chaw ntawm cov khoom kom dissipated los yog ntawm lub heatsink. Lawv raug muag nyias, txawm hais tias lawv kuj feem ntau tuaj ua ntej hauv qee lub tshuab tub yees kom yooj yim sib dhos. Cov no feem ntau yog ua los ntawm silicone lossis paraffin wax tov nrog cov khoom siv hluav taws xob. Nyob rau hauv chav tsev kub lawv zoo nkaus li khov, tab sis thaum lawv ua hauj lwm, lawv ua kua ntau dua.
  • Thermal muab tshuaj: yog cov kua nplaum uas muag hauv cov kaus poom nrog daim ntawv thov txhuam, cov raj lossis cov koob txhaj tshuaj kom yooj yim rau daim ntawv thov. Hauv qhov muab tshuaj txhuam no koj tuaj yeem pom cov hom hauv qab no:
    • Ntawm hlau: lawv siv cov khoom siv hlau (zinc, tooj liab, txhuas, nyiaj, kub ...) rau kev txhaws, thiab lawv feem ntau muaj xim greyish. Lawv nrov heev, thiab lawv tsis kim heev. Lawv coj zoo heev nyob rau hauv cov nqe lus ntawm thermal conductivity, muaj peev xwm txo qhov kub txog li 6 ° C nyob rau hauv tej rooj plaub. Txawm li cas los xij, lawv muaj teeb meem, thiab nws yog lawv cov hluav taws xob conductivity. Nrog cov khoom hlau, nws tuaj yeem luv luv ntawm kev sib cuag yog tias muaj cov xau.
    • Ceramics: cov khoom muab tub lim yog cov ceramic (zinc oxide, silicon dioxide, aluminium oxide, ...), muab lub teeb grey lossis xim dawb. Lub ntsiab lus muaj zog ntawm cov thermal silicones yog tias lawv pheej yig heev thiab muaj cov hluav taws xob tsis zoo, yog li lawv muaj kev nyab xeeb dua thaum cov dej xau. Txawm li cas los xij, lawv cov thermal conductivity yog qhov phem dua, yog li lawv tsuas yog pab txo qhov kub ntawm 1 txog 3ºC piv rau qhov sib txuas uas tsis siv.
    • Cov pa roj carbon monoxide: lawv kim dua thiab tshiab dua, tab sis lawv muab cov txiaj ntsig zoo dua. Lawv feem ntau yog npaj rau cov tshuab uas xav tau cov cua kub ntau dua, xws li overclocked chips, kev ua haujlwm siab lossis cov khoom siv hluav taws xob siab, thiab lwm yam. Lawv ua raws li cov khoom xws li pob zeb diamond plua plav, graphene oxide, thiab lwm yam. Nyob rau hauv cov ntaub ntawv no, cov khoom yuav luag zoo tag nrho, vim nyob rau hauv ib tes lawv muaj thermal conductivity zoo zoo li cov hlau, thiab nyob rau lwm yam, lawv muaj tsawg heev hluav taws xob conductivity zoo li cov ceramics.
    • Ua kua hlau: Lawv tsis yog li ntawd, tab sis feem ntau yog siv los ntawm qee cov tuam ntxhab lossis cov neeg nyiam rau cov khoom siv heatsink blocks ntawm kev ua haujlwm thiab lwm yam. Txawm hais tias lawv muaj cov khoom tawg yooj yim, txawm tias qee qhov zoo dua li cov hlau raws li cov hlau, qhov no feem ntau yog kim thiab tuaj yeem cuam tshuam nrog aluminium heatsinks, vim lawv siv cov hlau xws li indium lossis gallium.
    • Cov Hyiv: Kuj tseem muaj qee qhov hybrid thermal pastes, uas yog, lawv sib xyaw cov khoom sib txawv ua lub hauv paus los txhim kho cov khoom.

Yam khoom twg yuav?

Yog tias koj xav yuav cov khoom siv thermal paste, ntawm no yog qee qhov qhov zoo tshaj plaws hom thiab kev xaiv uas koj pom hauv khw:


Cov ntsiab lus ntawm tsab xov xwm ua raws li peb cov ntsiab cai ntawm kev tswj hwm kev ncaj nceesCov. Tshaj tawm ib qho yuam kev nyem no.

Yog thawj tus tuaj tawm tswv yim

Tso koj saib

Koj email chaw nyob yuav tsis tsum luam tawm. Yuav tsum tau teb cov cim nrog *

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  1. Lub luag haujlwm rau cov ntaub ntawv: Miguel Ángel Gatón
  2. Lub hom phiaj ntawm cov ntaub ntawv: Tswj SPAM, kev tswj xyuas tawm tswv yim.
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  4. Kev sib txuas lus ntawm cov ntaub ntawv: Cov ntaub ntawv yuav tsis raug xa mus rau lwm tus neeg thib peb tsuas yog los ntawm kev txiav txim siab raug cai.
  5. Cov ntaub ntawv khaws cia: Cov Ntaub Ntawv khaws tseg los ntawm Occentus Networks (EU)
  6. Txoj Cai: Txhua lub sijhawm koj tuaj yeem txwv, rov qab thiab tshem tawm koj cov ntaub ntawv.