Expandable graphite siv scenarios
1. Cov khoom sib khi yog sib xyaw nrog cov roj carbon graphite siab thiab cov concentrated sulfuric acid thiab nitric acid rau kev kho acidification, kev kho cua sov thiab tom qab ntawd nias thiab tsim. Lub graphite saj zawg zog npaj yog ib tug tshiab-kev ua tau zoo sealing cov ntaub ntawv, thiab nws yog ib hom ntawm nanomaterials zus nyob rau hauv situ.Piv nrog asbestos roj hmab thiab lwm yam tsoos sealing cov ntaub ntawv, nws muaj zoo compressibility, resilience, nws tus kheej-bonding, tsawg ntom thiab lwm yam zoo heev zog, thiab yuav siv tau nyob rau hauv high kub, siab lwj thiab lwm yam graphite ua hauj lwm ntev. dav siv nyob rau hauv aerospace, machinery, electronics, nuclear zog, petrochemical, hluav taws xob fais fab, shipbuilding, smelting thiab lwm yam industries.Vim nws muaj lub teeb yuag, conductive, thermal conductivity, kub tsis kam, acid thiab alkali corrosion kuj, zoo resilience, lubrication, plasticity thiab tshuaj stability thiab lwm yam zoo heev zog, lub npe hu ua lub ntiaj teb no tus huab tais.
2. Lub expandable graphite tau los ntawm kev kub siab expansion nyob rau hauv lub tshav pob ntawm kev tiv thaiv ib puag ncig muaj ib tug nplua nuj pore qauv thiab zoo heev adsorption kev ua tau zoo, yog li nws muaj ntau yam kev siv nyob rau hauv kev tiv thaiv ib puag ncig thiab biomedicine.Qhov pore qauv ntawm expandable graphite yog muab faib ua ob hom: qhib pore thiab kaw pore. Lub pore ntim ntawm expandable graphite yog hais txog 98%, thiab nws yog feem ntau loj pore nrog pore loj faib ntau yam ntawm 1 ~ 10. 3 nm.Vim nws yog ib tug macroporous, mesoporous mas, yog li thiab activated carbon thiab lwm yam microporous ntaub ntawv nyob rau hauv lub adsorption yam ntxwv txawv. nyob rau hauv cov kua theem adsorption.1 g expatable graphite tuaj yeem adsorb ntau tshaj 80 g hnyav roj, yog li nws yog ib qho kev cog lus ib puag ncig tiv thaiv cov khoom siv los ntxuav cov pa phem ntawm cov dej hauv dej.Nyob rau hauv cov dej khib nyiab ntawm cov lag luam tshuaj, cov kab mob (cov kab mob) feem ntau siv. Expandable graphite yog ib tug zoo microbial cab kuj, tshwj xeeb tshaj yog nyob rau hauv cov dej kho cov roj organic macromolecule kuab paug. Vim tias nws cov tshuaj lom neeg ruaj khov thiab rov siv tau dua tshiab, nws muaj kev cia siab rau daim ntawv thov.
3, tshuaj vim expandable graphite muaj cov yam ntxwv adsorption ntawm cov organic thiab lom macromolecules, nws muaj ib tug ntau yam ntawm daim ntawv thov prospects nyob rau hauv biomedical cov ntaub ntawv.
4, siab zog roj teeb khoom expanders graphite raws li cov khoom siv roj teeb, yog siv cov expanders graphite txheej cov tshuaj tiv thaiv dawb lub zog hloov mus rau hauv hluav taws xob lub zog.Feem ntau expandable graphite yog siv cathode, lithium li anode, los yog expandable graphite composite silver oxide li cathode, zinc li anode.Fossil fluoride number case, graphite acid thiab expandable graphite 3. siv hauv roj teeb.
5, hluav taws kub retardant
Vim lub expandable graphite thiab nws cov kub tsis kam, lub expandable graphite yog ib qho zoo heev sealing cov ntaub ntawv thiab yog dav siv nyob rau hauv cov hluav taws sealing sawb.Muaj ob lub ntsiab: thawj yog expansion ntawm graphite cov ntaub ntawv thiab roj hmab cov ntaub ntawv, inorganic nplaim retardant, accelerator, vulcanization tus neeg saib xyuas, reinforcing tus neeg saib xyuas, muab tub lim sib tov, ntau yam kev sib khi ntawm cov khoom siv roj hmab, vulcans siv rau lub qhov rooj hluav taws, hluav taws kub qhov rais thiab lwm yam sij hawm.Qhov expansion sealing sawb tuaj yeem thaiv cov pa luam yeeb los ntawm qhov pib mus rau qhov kawg ntawm chav tsev kub thiab hluav taws.Lwm yam yog iav fiber band raws li cov cab kuj, lub expansible graphite nrog ib tug binder bonded ntawm cov cab kuj, cov nplaum tsim nyob rau hauv high temperature carbonized khoom muab los ntawm shear quab yuam tau zoo tiv thaiv graphite sliding qhov rooj siv tau zoo heev. ntawm cov roj flue txias ntawm chav tsev kub lossis kub tsawg, yog li nws yuav tsum tau siv nrog chav tsev kub sealant.
Cov nplaim retardant expandable graphite yog cov nplaim hluav taws zoo rau cov ntaub ntawv yas. Nws muaj cov yam ntxwv ntawm non-toxic thiab tsis muaj kuab paug. Nws tuaj yeem ua tiav cov txiaj ntsig zoo tshaj plaws ntawm cov nplaim hluav taws xob thaum siv ib leeg lossis sib xyaw nrog lwm cov nplaim hluav taws.Expansable graphite tuaj yeem ua tiav cov nplaim hluav taws kub sib txawv, tus nqi tsawg dua li cov nplaim hluav taws xob zoo tib yam.Nws lub hauv paus ntsiab lus ntawm kev ua haujlwm yog: ntawm qhov kub thiab txias, qhov nthuav dav ntawm graphite tuaj yeem nthuav dav sai, ua rau cov nplaim hluav taws kub hnyiab tau, thiab cov khoom siv hluav taws xob tau tsim los ntawm cov graphite substrate. los ntawm cov hluav taws xob hluav taws xob thiab cov pa oxygen; Cov kua qaub radicals nyob rau hauv lub interlayer raug tso tawm thaum lub sij hawm nthuav dav, uas tseem txhawb cov carbonization ntawm cov substrate, thiaj li ua tiav cov txiaj ntsig zoo los ntawm ntau hom nplaim hluav taws.
Lub hnab ntim hluav taws xob, cov khoom siv hluav taws xob tiv thaiv hluav taws, lub nplhaib hluav taws kub vim qhov nthuav dav graphite nyob rau hauv qhov kub thiab txias muaj peev xwm tiv taus kev puas tsuaj thiab muaj qhov nthuav dav, tuaj yeem siv los ua lub hnab hluav taws kub, cov khoom siv hluav taws xob hluav taws xob, cov khoom siv hluav taws xob hluav taws xob, cov khoom siv hluav taws xob zoo hauv cov khoom siv hluav taws xob zoo, siv rau kev tsim hluav taws xob sealing (xws li: sealing siv yeeb nkab, cable, xaim, roj, roj yeeb nkab, thiab lwm yam).
Daim ntawv thov nyob rau hauv coatings Fine particles ntawm expandable graphite tuaj yeem muab ntxiv rau cov coatings zoo tib yam los tsim cov nplaim hluav taws zoo dua thiab cov txheej txheem tiv thaiv zoo li qub, thiab txhim kho lawv qhov kub thiab txias tsis kam.Qhov loj ntawm lub teeb uas tsis yog-combustible carbon txheej tsim nyob rau hauv qhov hluav taws kub tuaj yeem thaiv cov hluav taws xob hluav taws xob zoo rau lub substrate thiab tiv thaiv cov khoom siv hluav taws xob zoo li qub. tsub zuj zuj, siv rau cov roj av cia tso tsheb hlau luam, kom ua tiav cov nyhuv ntawm kev tiv thaiv hluav taws thiab hluav taws xob zoo li qub.
Kev tiv thaiv hluav taws kub, daim ntawv hluav taws kub hnyiab thiab kub kub resistant phaj: nyob rau hauv cov hlau puag lined nrog expatable graphite txheej, expatable graphite txheej thiab hlau puag nruab nrab ntawm cov carbonized nplaum txheej, expatable graphite txheej yog them nrog carbonized tiv thaiv txheej.Corrosion kuj, kub thiab siab kub kuj. Nws tsis ntshai ntawm qhov txias txias thiab cua sov ceev, thiab muaj cov coefficient ntawm thermal conduction zoo heev. Kev khiav hauj lwm kub yog -100 ~ 2 000 ℃ .Wide ntau daim ntawv thov, yooj yim rau siv, tsis tshua muaj nqi.Nyob rau hauv tas li ntawd, lub expandable graphite nthuav nyob rau hauv high kub, nias graphite ntawv, kuj yog siv nyob rau hauv hluav taws kub rwb thaiv tsev qhov chaw.
