ʻO ka pauka alumina ka mea waiwai nui o ke keʻokeʻo fused alumina grit a me nā mea abrasives, nona nā ʻano o ke kūpaʻa wela kiʻekiʻe, ke kūpaʻa ʻana a me nā waiwai paʻa. ʻO Nano-alumina XZ-LY101 he wai kala ʻole a maopopo, i hoʻohana nui ʻia e like me nā mea hoʻohui i nā resins acrylic like ʻole, nā resins polyurethane, nā epoxy resins, a me nā mea ʻē aʻe. a me nā ʻano like ʻole o ka pauka alumina he mau hoʻohana like ʻole. ʻO ka mea e pili ana i ka hoʻolauna ʻana i ka hoʻohana ʻana i ka pauka alumina α, γ, a me β-type.
1.α-alumina pauda
I loko o ka lattice o α-type alumina pauka, oxygen iions ua kokoke paa i ka hexagonal shape, Al3 + ua symmetrically mahele i loko o ka octahedral coordination kikowaena hoopuniia e ka oxygen iions, a me ka lattice ikehu ua nui loa, no laila, kiʻekiʻe loa ka helu heheʻe a me ka paila. α-type oxidation ʻAʻole hiki ke hoʻoheheʻe ʻia ka alumini i ka wai a me ka waika. Ua kapa ʻia ʻo ia ka alumini oxide ma ka ʻoihana. ʻO ia ke kumu kumu no ka hana ʻana i ke alumini metala; Hoʻohana ʻia ia e hana i nā pōhaku ʻokoʻa refractory, refractory crucibles, refractory pipes, a me nā mea hana hoʻokolohua kiʻekiʻe; Hiki ke hoʻohana ʻia e like me ka abrasive, flame retardant High-purity alpha alumina ʻo ia ka mea maka no ka hana ʻana i ka corundum artificial, artificial ruby a me sapphire; hoʻohana ʻia nō hoʻi ia e hana i ka substrate o nā kaapuni hoʻohui nui o kēia wā.
2. γ-alumina pauka
ʻO ka alumina γ-type he alumina hydroxide ma 140-150 ℃ ʻōnaehana dehydration kaiapuni haʻahaʻa haʻahaʻa, ua kapa ʻia ka ʻoihana he alumina ikaika, alumini glue. Hoʻopili ʻia ke ʻano o ka ion oxygen no ka ʻaoʻao kūpaʻa o ke kikowaena i hoʻopaʻa pono ʻia, Al3 + puʻunaue like ʻole i ka ion oxygen i hoʻopuni ʻia e nā āpau octahedral a me tetrahedral. γ-type alumina insoluble i ka wai, hiki ke hoʻoheheʻe ʻia i loko o ka waikawa ikaika a i ʻole ka hopena alkali ikaika, e wela ia i 1200 ℃ e hoʻololi ʻia i ka alumina α-type. ʻO ka alumina γ-type he mea porous, ka ʻili o loko o kēlā me kēia gram a hiki i nā haneli mau mika square, hiki ke hoʻonui i ka hana adsorption. ʻO ka huahana ʻoihana he ʻāpana cylindrical kala ʻole a ʻulaʻula iki paha me ke kūpaʻa paʻi maikaʻi. I ka ʻoihana hoʻomaʻemaʻe ʻaila a me ka ʻoihana petrochemical i hoʻohana mau ʻia e like me adsorbent, catalyst a me catalyst carrier; ʻO ka ʻoihana ka ʻaila transformer, ka ʻaila turbine deacidification agent, hoʻohana ʻia no ka nānā ʻana i ka papa kala; i loko o ke keʻena hoʻokolohua he kūʻokoʻa ikaika desiccant, ʻaʻole i emi iho kona mana maloʻo ma mua o ka phosphorus pentoxide, ma hope o ka hoʻohana ʻana i ka 175 ℃ wela 6-8h hiki ke hana hou a hoʻohana hou ʻia.
3.β-alumina pauka
Hiki ke kapa ʻia ka pauka alumina β-type alumina ikaika. Loaʻa ka ikaika o ka alumina alumina i ka ikaika mechanical, ka hygroscopicity ikaika, ʻaʻole pehu a pohā paha ma hope o ka lawe ʻana i ka wai, ʻaʻohe mea ʻawaʻawa, ʻala ʻole, hiki ʻole ke hoʻoheheʻe ʻia i ka wai a me ka ethanol, loaʻa ka adsorption ikaika no ka fluorine, hoʻohana nui ʻia no ka lawe ʻana i ka wai inu i nā wahi fluorine kiʻekiʻe.
Hiki i ka alumina ho'ā ke koho koho i ka wai mai nā kinoea, ka mahu wai a me kekahi mau wai. Ma hope o ka adsorption saturation, hiki ke ho'ōla hou ʻia ma ka wehe ʻana i ka wai ma ka hoʻomehana ʻana ma kahi kokoke. 175-315°C. Hiki ke hoʻokō ʻia ka adsorption a me ke ola hou ʻana i nā manawa he nui. Ma waho aʻe o ka hoʻohana ʻia ʻana ma ke ʻano he desiccant, hiki iā ia ke adsorb i ka mahu mai ka oxygen contaminated, hydrogen, carbon dioxide, maoli kinoea etc. o ka aila lubricating. Hoʻohana ʻia ʻo ia ma ke ʻano he catalyst a catalyst carrier a ma ke ʻano he mea lawe no ka nānā ʻana i ka papa kala.