Nā huahana

Helu helu maikaʻi:

Helehelena: māmā melemele crystalline pauka

ʻIke ʻike: ≥ 99%

Kahi hoʻoheheʻe: 77-79 ° C

Kahi paila: 219-221 ° CMM Hg

Kaha uila: 219-221 ° C / 18mm

Kuhikuhi:

1. Hoʻohana ākea ia e like me ke ʻano o ka stabilizer nontoxic thermal stabilizer no PVC a me 1,3-diphenyl acrylonitrile (DBM). Ma ke ʻano he stabilizer kōkua kōkua hou no PVC, he transmittance kiʻekiʻe kona, ʻaʻohe mea ʻawahia a me ka ʻono ʻole; hiki ke hoʻohana ʻia me ka calcium a paʻa paha a i ʻole ke kinowai, barium / zinc a me nā mea hoʻopaʻa wela ʻē aʻe, i hiki ke hoʻomaikaʻi maikaʻi i ka pena mua, ka transparency, ke kūpaʻa lōʻihi o PVC, a me ka ua a me ka "zinc burn" i ka wā o ka hana. Hoʻohana ākea ʻia i ka lāʻau lapaʻau, ʻūlū meaʻai a me nā huahana PVC aniani ʻole ʻawahia (e like me nā ʻōmole PVC, nā pale, nā kiʻi ʻoniʻoni, a pēlā aku.).

2. Hoʻolauna i nā mea hoʻoheheʻe calcium a me zinc: (nā stabilizers kuʻuna e like me nā pale paʻakai kēpau a me nā mea hoʻopaʻa paʻakai cadmium) i loaʻa nā mea maikaʻi ʻole o ka transparency maikaʻi ʻole, ka ʻokoʻa kala mua, ka maʻalahi o ke keʻa a me nā mea ʻino. ʻO Zinc a me cadmium nā stabilizer non-ʻona. He kūlana maikaʻi maikaʻi loa ia a me ka lubricity, maikaʻi loa i ka pena mua a me ke kūpaʻa kala.

He maikaʻi ʻole ke kūpaʻa wela o ka calcium / zinc paʻa paʻa, no laila pono e hoʻopili ʻia nā ʻano mea like ʻole e like me ka ʻenehana hana a me ka noi o ka huahana. Ma waena o nā mea hoʻoikaika paʻa, β - diketones (ʻo ka stearoyl benzoyl methane a me ka dibenzoyl methane) e pono ai i ka stabilizers calcium / zinc.

Ka hana synthetic

ʻO ke kaʻina hana ʻenehana mua e like me kēia: e hoʻohana ana i ka sodium methoxide paʻa e like me catalyst, acetophenone a me methyl benzoate i hana ʻia e Claisen condensation i ka xylene e kiʻi i dibenzoylmethane. Ma muli o ka maʻalahi o ka pauka sodium methoxide pauma a pauma, a maʻalahi e decompose ke hui pū me ka wai, pono e hoʻomaloʻo ʻia ka mea hoʻoheheʻe ma mua o ka hoʻohui ʻana, a laila pono e hoʻohui ʻia ka sodium methoxide paʻakai ma lalo o ka pale o ka nitrogen ma hope o ke anuanu i 35 ℃. Pono e pale ʻia ke kaʻina hana e nitrogen, a me ka hoʻohana ʻana o ka sodium methoxide paʻa i kahi weliweli palekana a me ka mana nui e hoʻohana ai. ʻO ka lakio molar o ka acetophenone: methyl benzoate: ʻo ka sodium sodium methoxide he 1: 1.2: 1.29. ʻO ka awelika hoʻokahi manawa o ka huahana 80%, a ʻo ka hua nui o ka waiʻona makuahine he 85.5%.

ʻO ke kaʻina hana hana nui hou e like me kēia: 3000l xylene solvent i hoʻohui ʻia i ka reactor, ua hoʻohui ʻia ʻo 215kg paʻa sodium hydroxide, hoʻomaka ʻia ka hoʻoulu ʻana, hoʻāla ʻia ka mahana i ka 133 ℃, a ua hoʻopau ʻia ka wai hapa liʻiliʻi o ka wai; a laila hoʻohui ʻia ka 765kg methyl benzoate, hāpai ʻia ka mahana i 137 ℃, hoʻohui ʻia ʻo 500kg acetophenone i dropwise, a mālama ʻia ke ana wela i ka mahana 137-139. Me ka hoʻohui o acetophenone, hele a mānoanoa ka wai hānai. Lawe ʻia ka methanol huahana mai ke kaʻina hana a hoʻomaka ka hopena i ke ala maikaʻi. Hoʻopau ʻia ka mea hoʻoheheʻe o ka methanol a me ka xylene. E mālama no 2 mau hola ma hope o ka hāʻule ʻana. Ke ʻaneʻane ʻaʻohe distillate, pau ka hopena.

Hāʻawe: 25kg / ʻeke.

Mālama i ka mālama ʻana: hale kūʻai i loko o ka hale hoʻoluʻolu, maloʻo a hoʻokomo pono ʻia.

Makahiki makahiki: 1000 tone / makahiki