• nūhou-bg - 1

He aha ka titanium dioxide?Pehea e ʻike ai i ka ʻoiaʻiʻo o ka titanium dioxide?

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.

信图片_20240530140243

.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.

Nā ʻili - 1

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.

信图片_20240530160446

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.

640 (2)
640

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.

640 (3)
640 (1)

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.

信图片_20240530160446

(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:

1ʻO 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.

信图片_20240530143754

2Ma 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.

信图片_202405301437542

3E 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).

信图片_202405301437543
信图片_202405301437544

4E 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).

图片1.png4155

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).

信图片_202405301437546

(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.

信图片_202405301437547

(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.

信图片_202405301437548

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