I-alumina powder yeyona nto iphambili ye-alumina grit edibeneyo emhlophe kunye nezinye izinto ezixubileyo, ezineempawu zokumelana nokushisa okuphezulu, ukuxhathisa ukubola kunye neempawu ezizinzileyo.I-Nano-alumina XZ-LY101 ilulwelo olungenambala kunye noluselubala, olusetyenziswa ngokubanzi njengezongezo kwiintlaka ezahlukeneyo ze-acrylic, i-polyurethane resins, i-epoxy resins, njl njl. kwizinto zokwaleka zeglasi, amatye anqabileyo, izixhobo ezichanekileyo, njl.njl.;kunye neentlobo ezahlukeneyo ze-alumina powder zineendlela ezahlukeneyo zokusetyenziswa.Oku kulandelayo kugxile ekwaziseni ukusetyenziswa kwe-α, γ, kunye ne-β-uhlobo lwe-alumina powder.
I-1.α-alumina powder
Kwilatisi ye-alpha-uhlobo lwe-alumina powder, i-ion ye-oxygen ipakishwe ngokusondeleyo kwimilo ye-hexagonal, i-Al3+ isasazwe ngokulinganayo kwiziko le-octahedral yokulungelelanisa ejikelezwe yi-oxygen ion, kunye ne-lattice energy inkulu kakhulu, ngoko ke indawo yokunyibilika kunye neqondo lokubilisa likhulu kakhulu. phezulu.I-α-uhlobo lwe-oxidation I-Aluminiyam ayinyibiliki emanzini kunye ne-asidi.Ikwabizwa ngokuba yi-aluminium oxide kwishishini.Yimathiriyeli ekrwada esisiseko yokwenza i-aluminiyam yesinyithi;ikwasetyenziselwa ukwenza izitena ezahlukeneyo eziphikisayo, iintsimbi eziphikisayo, imibhobho ephikisayo, kunye nezixhobo zokulinga ubushushu obuphezulu;Inokuthi isetyenziswe njenge-abrasive, i-flame retardant Ucoceko oluphezulu lwe-alpha alumina lukwayinto ekrwada yokuveliswa kwe-corundum yokwenziwa, irubhi yokwenziwa kunye nesafire;ikwasetyenziselwa ukuvelisa i-substrate yeesekethe ezihlanganisiweyo zanamhlanje ezinkulu.
2. γ-alumina powder
I-γ-uhlobo lwe-alumina yi-aluminiyam hydroxide kwi-140-150 ℃ inkqubo yokunciphisa ubushushu obuphantsi kwendawo, ishishini likwabizwa ngokuba yi-alumina esebenzayo, iglue ye-aluminium.Ubume be-ion ye-oksijini yokulinganisa yecala elithe nkqo leziko lifakwe ngokusondeleyo, i-Al3 + isasazwa ngokungaqhelekanga kwi-ion ye-oxygen ejikelezwe yi-octahedral kunye ne-tetrahedral gaps.I-γ-uhlobo lwe-alumina olunganyibilikiyo emanzini, lunokunyibilika kwi-asidi eyomeleleyo okanye kwisisombululo esinamandla se-alkali, iya kufudunyezwa kwi-1200 ℃ yonke iya kuguqulwa ibe yi-α-uhlobo lwe-alumina.I-γ-uhlobo lwe-alumina luyinto ene-porous, indawo yangaphakathi yendawo yangaphakathi yegram nganye ukuya kumakhulu eemitha zesikwere, umthamo ophezulu we-adsorption.Imveliso yemizi-mveliso idla ngokuba yisuntswana elingenambala okanye elipinki kancinane lecylindrical enokumelana noxinzelelo olulungileyo.Kwishishini lokucokisa i-petroleum kunye ne-petrochemical lisetyenziswa ngokuqhelekileyo njenge-adsorbent, i-catalyst kunye ne-catalyst carrier;kwishishini i-oyile ye-transformer, i-agent ye-oyile ye-turbine deacidification, ekwasetyenziselwa uhlalutyo lombala wombala;kwilabhoratri i-desiccant eqinile engathathi hlangothi, amandla ayo okumisa angekho ngaphantsi kwe-phosphorus pentoxide, emva kokusetyenziswa kwi-175 ℃ ilandelayo ukufudumeza i-6-8h nayo inokuvuselelwa kwaye isetyenziswe kwakhona.
3.β-alumina powder
I-β-uhlobo lwe-alumina powder lunokubizwa ngokuba ngumgubo we-alumina osebenzayo.I-alumina powder esebenzayo inamandla amakhulu omatshini, i-hygroscopicity eyomeleleyo, ayidumbi okanye iqhekeke emva kokufunxa amanzi, angeyotyhefu, engenavumba, enganyibiliki emanzini kunye ne-ethanol, ine-adsorption eyomeleleyo ye-fluorine, esetyenziselwa ukususwa kwe-fluoride yamanzi okusela kwiindawo eziphakamileyo ze-fluorine. .
I-alumina esebenzayo inamandla okukhetha ngokukhetha amanzi aphuma kwiigesi, umphunga wamanzi kunye nolwelo oluthile.Emva kwe-adsorption saturation, inokuvuselelwa ngokususa amanzi ngokufudumeza malunga ne-approx.175-315°C.I-Adsorption kunye nemvuselelo inokuqhutywa ngamaxesha amaninzi.Ngaphandle kokusetyenziswa njenge-desiccant, inokuphinda ibhengeze umphunga kwi-oksijeni engcolileyo, i-hydrogen, i-carbon dioxide, igesi yendalo njl.Ikwasetyenziswa njenge-catalyst kunye ne-catalyst carrier kunye ne-catalyst carrier yokuhlalutya umaleko wombala.