Ukupakishwa kwe-graphite, -njengokuvala ukusebenza okuphezulu nokusetshenziswa kwe-thermal conductivity, kudlala indima ebalulekile ku-petrochemical, amandla, i-aerospace, nezinye izinkambu. Ukumelana kwayo nezinga lokushisa okuphezulu{2}}okuphakeme, ukuzinza kwamakhemikhali, kanye{3}}nezakhiwo zokuzigcoba kuyenza ibe enye indlela ekahle kunezinsimbi zomdabu noma zokupakishwa kwe-polymer. Lesi sihloko sizohlola izinzuzo zobuchwepheshe eziyinhloko zokupakishwa kwe-graphite nezixazululo ezijwayelekile zohlelo lokusebenza.
I. Izinzuzo Zokusebenza Ze-Graphite Packing
I-graphite ye-flake yemvelo, ngokucubungula okukhethekile, ingashintshwa ibe yi-graphite eyandisiwe noma ukupakishwa kwe-graphite okuguquguqukayo ngesakhiwo esinezingqimba. Le nto igcina izinga lokushisa elibanzi elingu--200℃kuya ku-600℃ezindaweni ezine-oxidizing futhi ayisebenzi emithonjeni eminingi ene-acidic ne-alkaline. Uma kuqhathaniswa nokupakishwa kwe-asbestos yendabuko noma i-polytetrafluoroethylene (PTFE), ukupakishwa kwe-graphite kune-coefficient ephansi yokungqubuzana (cishe u-0.1-0.15), okunciphisa ngempumelelo ukuguga ezindaweni zokuvala ezisetshenziswayo zikagesi. Ngaphezu kwalokho, ukusebenza kwayo kwe-thermal kungafinyelela ku-100-150 W/(m·K), inikeze ukuchithwa kokushisa ezinhlelweni zokuvala eziguquguqukayo futhi ithuthukise kakhulu ukwethembeka kwesistimu.
II. Izimo Zokusebenza Ezijwayelekile Nezixazululo
1.{1}}Isistimu Yokuvalwa Kwevaluvu Yokucindezela Okuphezulu
Embonini yamandla ashisayo ashisayo amavaluli amakhulu-ezendlalelo ezilukiwe zegraphite amaringi ane-nickel wire reinforcement asetshenziselwa ukumelana nokucindezela okungu-45 MPa nokuthola ukuvuza okuyiziro. Idizayini yangaphambili-yokuminyanisa okungu-30%-50% kokucindezelwa kokufakwa kokuqala kunxephezela ukunethezeka kokupakisha okubangelwa ukusebenza kwesikhathi eside.
2. Chemical Pump Shaft Seal Optimization
Kwemidiya egqwala kakhulu (njenge-concentrated sulfuric acid ne-hydrofluoric acid), i-carbon fibre-i-reinforced graphite packing ithuthukisiwe, ikhulisa amandla ayo okuqina ukuze ibe ngaphezu kuka-12 MPa. Uma kuhlanganiswe nomjovo-uhlelo lokugcotshwa kwe-seal, izikhawu zokulungisa zinganwetshwa ngokuphindwe izikhathi ezingaphezu kwezintathu kunezixazululo zendabuko.
3. Izinto Ezisetshenziswayo Zokushintsha Ukushisa{1}Okuphezulu{1}}
Ezinhlelweni zokugcinwa kokushisa kukasawoti oncibilikisiwe, ukupakisha okuhlanganisiwe kwe-graphite ne-silicon carbide kuqinisekisa ukusebenza kokuvaleka emazingeni okushisa angaphezu kwama-degree angu-300 kuyilapho kunciphisa ukulahlekelwa ukushisa ngo-15% -20% ngenxa ye-graphite's conductivity enhle kakhulu yokushisa.
III. Amathrendi Okuthuthukiswa Kwezobuchwepheshe
Ucwaningo lwamanje lugxile kubuchwepheshe bokulungisa be-nano-, obufana nokwengezwa kwe-molybdenum disulfide (MoS₂) noma i-graphene, ukuze kuthuthukiswe ukungezwani nokugqokwa kokugcwalisa kanye nokuqhutshwa kokushisa. Ngaphezu kwalokho, ukuphrinta kwe-3D kwezinqubo zokubumba ezenziwe ngokwezifiso zokugcwalisa kusesigabeni sokuhlola, okuvumela ukubekwa uphawu okunembayo ngaphansi kwezimo zokusebenza eziyinkimbinkimbi.
Izixazululo ze-graphite filler, ngokusungula izinto ezintsha kanye nokwenza kahle kobunjiniyela, ziyaqhubeka nokuqhubekisela phambili ukuthuthukiswa kwezimboni maqondana nokusebenza kahle okuphezulu, ukuphepha, nempilo ende. Ngokukhula kwesidingo sokukhiqiza okuluhlaza, ubuchwepheshe bokucubungula i-graphite obuncane-, obunobungani bemvelo nabo buzoba indawo eyinhloko yempumelelo embonini.
