He aha ka titanium dioxide?
ʻO ka mea nui o ka titanium dioxide ʻo TIO2, he puaʻa kemika inorganic koʻikoʻi ma ke ʻano o kahi paʻa keʻokeʻo a i ʻole ka pauka. ʻAʻohe mea ʻawaʻawa, he keʻokeʻo kiʻekiʻe a me ka ʻōlinolino, a ua manaʻo ʻia ʻo ia ka puaʻa keʻokeʻo maikaʻi loa no ka hoʻomaikaʻi ʻana i ke keʻokeʻo. Hoʻohana nui ʻia ia i nā ʻoihana e like me nā uhi, plastics, rubber, pepa, inika, ceramics, aniani, etc.
Ⅰ.ʻO ke kiʻikuhi kaulahao ʻoihana Titanium dioxide:
（1） ʻO ka upstream o ke kaulahao ʻoihana titanium dioxide he mau mea maka, me ka ilmenite, titanium concentrate, rutile, etc.
（2） E pili ana ka midstream i nā huahana titanium dioxide.
（3） ʻO ka lalo ka māhele noi o ka titanium dioxide.Hoʻohana nui ʻia ka Titanium dioxide i nā ʻano like ʻole e like me ka uhi, plastics, papermaking, ink, rubber, etc.
Ⅱ. ʻO ka hana aniani o ka titanium dioxide:
ʻO ka Titanium dioxide kahi ʻano polymorphous pūhui, nona nā ʻano aniani maʻamau ʻekolu i ke ʻano, ʻo ia ka anatase, rutile a me brookite.
Aia nā rutile a me anatase i ka ʻōnaehana kristal tetragonal, i kūpaʻa ma lalo o ka mahana maʻamau; No ka ʻōnaehana kristal orthorhombic ka brookite, me ka hoʻokumu ʻana i ke aniani paʻa ʻole, no laila ʻaʻohe waiwai kūpono i ka ʻoihana i kēia manawa.
Ma waena o nā hale ʻekolu, ʻo ka pae rutile ka mea paʻa loa. E hoʻololi ʻole ʻia ka pae Anatase i ka pae rutile ma luna o 900 ° C, aʻo ka pae brookite e hoʻololi ʻole ʻia i ka pae rutile ma luna o 650 ° C.
（1） ʻAha Rutile titanium dioxide
I ka rutile phase titanium dioxide, aia nā ʻātoma Ti ma ke kikowaena o ka lattice aniani, a aia nā ʻātoma oxygen ʻeono ma nā kihi o ka octahedron titanium-oxygen. Hoʻopili ʻia kēlā me kēia octahedron i 10 mau octahedrons e hoʻopuni ana (me ʻewalu mau vertices kaʻana a me ʻelua ʻaoʻao kaʻana like), a ʻelua mau molekala TiO2 e hoʻokumu i kahi pūnaehana ʻāpana.
Kiʻi kiʻi kiʻi o ka cell crystal of rutile phase titanium dioxide (hema)
ʻO ke ala pili o ka titanium oxide octahedron (ʻākau)
（2）Anatase phase titanium dioxide
I loko o ka anatase phase titanium dioxide, ua hoʻohui ʻia kēlā me kēia octahedron titanium-oxygen i 8 mau octahedrons e hoʻopuni ana (4 mau ʻaoʻao kaʻana a me 4 mau vertices kaʻana like), a ʻo 4 mau molekala TiO2 e hoʻokumu i kahi pūnaehana ʻāpana.
Kiʻi kiʻi kiʻi o ka cell crystal of rutile phase titanium dioxide (hema)
ʻO ke ala pili o ka titanium oxide octahedron (ʻākau)
Ⅲ. Ka Papa Hoomakaukau o Titanium Dioxide:
ʻO ke kaʻina hana o ka titanium dioxide ka nui o ke kaʻina sulfuric acid a me ke kaʻina chlorination.
（1）Kaʻina sulfuric acid
ʻO ke kaʻina hana sulfuric acid o ka hana titanium dioxide e pili ana i ka hopena acidolysis o ka pauka hao titanium me ka waikawa sulfuric concentrated e hana i ka titanium sulfate, a laila hydrolyzed e hana i ka metatitanic acid. Ma hope o ka calcination a me ka ʻoki ʻana, loaʻa nā huahana titanium dioxide. Hiki i kēia ʻano hana ke hana anatase a me rutile titanium dioxide.
（2）Kaʻina hana chlorination
ʻO ke kaʻina hana chlorination o ka hana titanium dioxide e hui pū i ka rutile a i ʻole kiʻekiʻe-titanium slag pauka me ka coke a laila lawe i ka chlorination kiʻekiʻe e hana i ka titanium tetrachloride. Ma hope o ka oxidation wela kiʻekiʻe, loaʻa ka huahana titanium dioxide ma o ka kānana, holoi wai, hoʻomaloʻo, a me ka ʻoki ʻana. Hiki i ke kaʻina hana chlorination o ka hana titanium dioxide ke hana i nā huahana rutile.
Pehea e ʻike ai i ka ʻoiaʻiʻo o ka titanium dioxide?
I. Nā Hana Kikino:
（1）ʻO ke ala maʻalahi ka hoʻohālikelike ʻana i ke ʻano ma o ka hoʻopā ʻana. ʻOi aku ka maʻalahi o ka titanium dioxide hoʻopunipuni, ʻoiai ʻoi aku ka paʻakikī o ka titanium dioxide.
（2）Ma ka holoi ʻana me ka wai, inā ʻoe e kau i kahi titanium dioxide ma kou lima, maʻalahi ka holoi ʻana i ka mea hoʻopunipuni, ʻoiai ʻaʻole maʻalahi ka holoi ʻana i ka mea maoli.
（3）E lawe i ke kīʻaha wai maʻemaʻe a hoʻokuʻu i ka titanium dioxide i loko. He ʻoiaʻiʻo ka mea e lana ana i ka ʻili, aʻo ka mea e hoʻopaʻa i lalo he hoʻopunipuni (ʻaʻole hiki ke hana kēia ʻano no nā huahana i hoʻōla ʻia a hoʻololi ʻia).
（4）E nānā i kona solubility i ka wai. ʻO ka maʻamau, hiki ke hoʻoheheʻe ʻia ka titanium dioxide i ka wai (koe wale nō ka titanium dioxide i hoʻolālā ʻia no nā plastics, inks, a me kekahi mau titanium dioxide synthetic, ʻaʻole hiki ke hoʻoheheʻe ʻia i ka wai).
II. Nā ʻano hana kemika:
(1) Inā hoʻohui ʻia ka pauda calcium: ʻO ka hoʻohui ʻana i ka waika hydrochloric e hoʻoulu ai i ka hopena ikaika me ka leo uē, i hui pū ʻia me ka hana ʻana o ka nui o nā ʻōhū (no ka mea, hoʻopili ʻia ka calcium carbonate me ka waikawa e hana ai i ka carbon dioxide).
(2) Inā hoʻohui ʻia ka lithopone: ʻO ka hoʻohui ʻana i ka waika sulfuric dilute a i ʻole ka waika hydrochloric e hoʻoulu ai i kahi ʻala hua popopo.
(3) Inā hydrophobic ka hāpana, ʻaʻole e hoʻoulu ʻia ka hoʻohui ʻana i ka waika hydrochloric. Eia nō naʻe, ma hope o ka hoʻomaʻemaʻe ʻana me ka ethanol a laila hoʻohui i ka waika hydrochloric, inā hana ʻia nā ʻōhū, hōʻike ia i ka hāpana i loko o ka pauka calcium carbonate i uhi ʻia.
III. ʻElua mau ala maikaʻi ʻē aʻe:
(1) Ma ka hoʻohana ʻana i ke ʻano like o PP + 30% GF + 5% PP-G-MAH + 0.5% titanium dioxide pauka, ʻoi aku ka haʻahaʻa o ka ikaika o ka mea i loaʻa, ʻoi aku ka ʻoiaʻiʻo o ka titanium dioxide (rutile).
(2) E koho i ka resin akaka, e like me ka ABS transparent me 0.5% titanium dioxide pauda i hoʻohui ʻia. E ana i kona māmā māmā. ʻO ka haʻahaʻa o ka transmittance māmā, ʻoi aku ka ʻoiaʻiʻo o ka pauka titanium dioxide.
Ka manawa hoʻouna: Mei-31-2024
