Txhua tus paub tias cov kua nplaum yog dab tsi. Qhov no yog cov khoom nplaum uas tsim nyog rau kev sib txuas nruj ntawm ob lossis ntau lub ntsiab lus rau ib leeg. Txawm li cas los xij, nyob ntawm seb cov khoom siv tau nrawm npaum li cas, koj yuav tsum siv qee hom kua nplaum: PVA yog tsim rau cov duab los qhia, tawv, iav thiab ntaub; "Lub Sij Hawm" nplaum hlau, yas, roj hmab, ntoo, thiab lwm yam. Tab sis cov khoom siv dab tsi yuav tsum tau siv los txhim kho cov dab dej kub, xws li radiators, piv txwv li?
Ua haujlwm nrog lawv, koj xav tau cov tshuaj tsim tshwj xeeb uas tuaj yeem tiv taus qhov kub thiab txias thiab muaj lwm yam tseem ceeb. Qhov no yog dab tsi thermally conductive nplaum yog.
Koj xav tau dab tsi?
Txhawm rau kom lub fastening kom muaj zog thiab zoo, tsis muaj deformation los yog overheating ntawm cov khoom thaum lub sij hawm installation, nws yog tsim nyog los xyuas kom meej tshem tawm cov cua sov los ntawm cov khoom uas kub thaum lub sij hawm ua hauj lwm. Thermally conductive nplaum ua haujlwm zoo nrog txoj haujlwm no. Rau heatsinks, LEDs thiab lwm yam khoom siv hluav taws xob uas xav tau kev txhim kho, qhov kev daws teeb meem no tsuas yog qhov tsis tseem ceeb. Nws ua haujlwm dhau qhov kub ntawm qhov dav. NtawmCov yam ntxwv tseem ceeb no yog qhov tsis muaj tshuaj lom ntawm cov tshuaj nplaum, yog li koj tsis tuaj yeem ntshai siv nws nyob hauv ib puag ncig.
Kub-ua nplaum "Radial"
Cov nplaum no yog cov nplaum nplaum uas nrov tshaj plaws nrog rau kev hloov pauv cua sov. Qhov no yog vim muaj ib tug xov tooj ntawm undoubted zoo ntawm kev daws. Ua ntej, cov nplaum nplaum tiv taus qhov cuam tshuam ntawm cov yam ntxwv xws li kev ua haujlwm ntawm lub hnub ci, kev hloov pauv ntawm ib puag ncig sab nraud, cov av noo siab (moisture thiab dej resistant). Qhov thib ob, cov kua nplaum nplaum muaj cov viscosity siab thiab muab cov qib siab adhesion rau cov ntaub ntawv xws li iav, yas, ceramics thiab txawm tias hlau. Thib peb, cov kua nplaum "Radial" muaj zog heev (rau kev sib cais ntawm 2.3 MPa lossis ntau dua). Tsis tas li ntawd, siv cov nplaum no, koj tsis tas yuav txhawj xeeb txog kev xeb ntawm txhuas, hlau thiab nyiaj seem.
Cov kua nplaum muaj cov thermal conductivity siab thiab tiv taus qhov kub hloov pauv loj heev. Nws qhov kev khiav hauj lwm ntau ntawm -60 txog 300 degrees Celsius!
Yuav siv li cas?
Ua ntej tshaj plaws, nws yog qhov yuav tsum tau ntxuav thiab degrease qhov chaw uas cov nplaum thermally conductive yuav raug siv. Qhov no tuaj yeem ua tiav nrog acetone, roj av lossis cawv. Tom ntej no, cov tshuaj nplaum yog siv rau qhov chaw npaj ntawm tus nqi ntawm 1 square centimeter tsis ntau tshaj 1 ml ntawm cov khoom. Cov khoom yog tsau thiab nias rau li 20-25 feeb. Tom qab ntawd, nws yuav siv qee lub sijhawm, uas yog 24 teev, kom ntseeg taumuaj zog adhesion ntawm cov khoom. Tom qab ib hnub, cov khoom kho nrog kua nplaum tuaj yeem siv tau.
Nws tsuas yog qhov tsis tseem ceeb hauv cov xwm txheej uas nws tsis tuaj yeem siv cov tshuaj tiv thaiv tshav kub thiab cov substrates. Koj tuaj yeem yuav nws ntawm txhua lub khw muag khoom hluav taws xob, tab sis yog tias tsis muaj ib qho nyob ze, koj tuaj yeem ua rau koj tus kheej ua cov nplaum nplaum. Nws tsis yooj yim, tau kawg, tab sis nws ua tau.
Yuav ua li cas ua kua nplaum?
Ua li no, npaj glycerin cement. Nws muaj zog txaus thiab tiv taus ntau yam kev cuam tshuam, kev ua haujlwm kub txog 250 degrees. Peb xav tau glycerin lub cev qhuav dej: kom tshem tawm cov dej, glycerin yuav tsum tau rhaub kom sov li 200 degrees. Tib yam yuav tsum tau ua nrog cov hmoov txhuas oxide (peb cua sov txog 300 degrees). Ob qho tib si txias thiab sib tov - koj yuav tau txais ib qho slurry, qhov sib xws ntawm uas yog reminiscent ntawm lub khob noom cookie tsis khov heev.
Tam sim no qhov tseem ceeb yog ua sai sai. Txhawm rau siv cov kua nplaum hauv tsev, koj yuav muaj li 15-20 feeb, tom qab ntawd cov nplaum nplaum yuav tawv. Qhov piv ntawm glycerin thiab txhuas oxide yog raws li nram no: 25 ml thiab 100 grams, raws li.
Zaj lus
Raws li koj tuaj yeem pom, cov nplaum nplaum yog ib qho khoom siv tsis tau thaum ua haujlwm nrog cov hluav taws xob, thaum txuas lub transistor lossis processor, rau mounting LEDs thiab lwm yam khoom siv hluav taws xob. Nyob rau hauv nws cov khoom, nws yog superior rau tshav kub-ua pastes, non-toxic thiab resistant heev. Nyob rau tib lub sij hawm, xws li kua nplaum raug nqipheej yig heev - ib lub raj yuav raug nqi koj nyob ib ncig ntawm 100 rubles. Nws los nrog ib tug syringe (2 ml). Yog tias koj tseem muaj cov kua nplaum ntau dhau tom qab ua tiav cov haujlwm, tsuas yog kaw lub koob txhaj tshuaj kom nruj thiab tso nws rau cov kev xav tau tom ntej. Cov tshuaj nplaum no tsis qhuav rau lub sijhawm ntev, uas yog lwm qhov ntawm nws qhov zoo tshaj plaws.
