ʻO ka Tetrahydrofuran

ʻO ka Tetrahydrofuran, i hoʻopōkole ʻia ʻo THF, he hui organik heterocyclic. No ka papa ether, ʻo ia ka hui ʻala furan huahana hydrogenation piha.

ʻO Tetrahydrofuran kekahi o nā ethers polar ikaika loa. Hoʻohana ʻia ia ma ke ʻano he mea hoʻoheheʻe polar waena i nā hopena kemika a me ka unuhi ʻana. He wai hoʻoheheʻe kala ʻole ia i ka mahana o ka lumi a he ʻala like me ka ether. Hoʻoheheʻe ʻia i ka wai, ethanol, ether, acetone, Chemicalbook benzene a me nā mea hoʻoheheʻe organik ʻē aʻe, i ʻike ʻia ʻo "universal solvent". I ka mahana o ka lumi a hiki ke hui pū ʻia ka wai, ʻo kekahi ʻoihana reagent kū ʻole i ke kānāwai e hoʻohana i kēia wahi e hoʻonui ai i ka wai reagent tetrahydrofuran. Ma muli o ke ʻano o THF e hana i nā peroxides i ka mālama ʻana, hoʻohui pinepine ʻia ka antioxidant BHT i nā huahana ʻoihana. ʻO ka nui o ka wai ≦0.2%. Loaʻa iā ia nā ʻano o ka haʻahaʻa haʻahaʻa, ka paila haʻahaʻa a me ka wai maikaʻi.

Nā waiwai kemika:wai moakāka ʻole kala, me ke ʻala ether. I hui pū ʻia me ka wai, ka waiʻona, ketone, benzene, ester, ether, a me nā hydrocarbons.

Nā noi nui:

1. Nā mea maka o ka hopena synthesis spandex:

Hiki ke hoʻololi ʻia ʻo Tetrahydrofuran iā ia iho i loko o ka polytetramethylene ether diol (PTMEG), i ʻike ʻia hoʻi ʻo tetrahydrofuran homopolyl. ʻO PTMEG a me toluene diisocyanate (TDI) i hana ʻia me ke kūpaʻa ʻaʻahu, ke kūpaʻa ʻaila, ka hana haʻahaʻa haʻahaʻa, ka ikaika kiʻekiʻe o ka rubber kūikawā; Ua hoʻomākaukau ʻia ka mea elastic polyether polyester me ka dimethyl terephthalate a me 1, 4-butanediol. ʻO PTMEG me ke kaumaha molekala pili o 2000 a me p-methylene bis (4-phenyl) diisocyanate (MDI) e hana i ka fiber elastic polyurethane (SPANDEX fiber), ka rubber kūikawā a me kekahi mau mea maka uhi kūikawā. ʻO ka hoʻohana nui ʻana o THF no ka hana ʻana o PTMEG. Wahi a nā helu helu, ma kahi o 80% o ka THF honua e hoʻohana ʻia no ka hana ʻana o PTMEG, a hoʻohana nui ʻia ʻo PTMEG no ka hana ʻana o ka fiber spandex.

2. Mea hoʻoheheʻe me ka hana maikaʻi loa:

ʻO Tetrahydrofuran kahi mea hoʻoheheʻe maikaʻi loa i hoʻohana pinepine ʻia, kūpono loa no ka hoʻoheheʻe ʻana i ka PVC, polyvinylidene chloride a me ka butyl aniline, i hoʻohana nui ʻia e like me ka uhi ʻili, ka uhi anticorrosive, ka paʻi ʻīnika, ka lipine a me ka mea hoʻoheheʻe uhi kiʻiʻoniʻoni, me Chemicalbook i ka electroplating alumini wai hiki ke hoʻomalu i ka mānoanoa o ka papa alumini a me ka mālamalama. ʻO ka mea hoʻoheheʻe no ka uhi lipine, ka uhi ʻili PVC, ka hoʻomaʻemaʻe ʻana i ka reactor PVC, ka wehe ʻana i ka kiʻiʻoniʻoni PVC, ka uhi cellophane, ka paʻi ʻīnika plastik, ka uhi polyurethane thermoplastic, ka hoʻopili ʻana, hoʻohana pinepine ʻia i nā uhi ʻili, nā uhi pale, nā inika, nā mea hoʻokaʻawale a me nā mea mālama ʻili no ka ʻili synthetic.

3. Hoʻohana ʻia ma ke ʻano he mea maka no ka synthesis organik e like me nā lāʻau lapaʻau:

No ka hana ʻana o ka tetrahydrothiophene, 1.4-dichloroethane, 2.3-dichlorotetrahydrofuran, valerolactone, butyl lactone a me pyrrolidone. I ka ʻoihana lāʻau lapaʻau, hoʻohana ʻia ia i ka synthesis o coughbixin, rifumycin, progesterone a me kekahi mau lāʻau hormone. Hoʻopuka ʻia ʻo Tetrahydrothiophenol e ka mālama ʻana i ka hydrogen sulfide, hiki ke hoʻohana ʻia ma ke ʻano he mea ʻala i loko o ke kinoea wahie (mea hoʻohui ʻike), a ʻo ia hoʻi ka mea hoʻoheheʻe nui i ka ʻoihana lāʻau lapaʻau.

4. Nā Hoʻohana ʻē aʻe:

ʻO ka mea hoʻoheheʻe chromatographic (gel permeation chromatography), hoʻohana ʻia no ka ʻono kinoea kūlohelohe, ka mea hoʻoheheʻe acetylene, ka mea hoʻopaʻa māmā polymer material, a pēlā aku. Me ka hoʻohana ākea o ka tetrahydrofuran, ʻoi aku hoʻi i nā makahiki i hala iho nei, me ka ulu wikiwiki o ka ʻoihana polyurethane, ke piʻi nei ke koi no PTMEG ma ko mākou ʻāina, a ke hōʻike nei hoʻi ke koi no ka tetrahydrofuran i kahi ʻano ulu wikiwiki.

Pōʻino:No ka papa 3.1 ka wai lapalapa ʻo Tetrahydrofuran me kahi haʻahaʻa haʻahaʻa, lapalapa loa, hiki i ka mahu ke hana i ka hui pahū me ka ea, ʻo ka palena pahū he 1.5% ~ 12% (hapa nui), me ka huhū. ʻO kona ʻano lapalapa loa he mea palekana hoʻi. ʻO ka hopohopo palekana nui me THFS ʻo ia ka lohi o ka hoʻokumu ʻana o nā peroxides organik pahū nui i ka wā e hōʻike ʻia ai i ka ea. No ka hōʻemi ʻana i kēia pilikia, hoʻohui pinepine ʻia nā THFS i loaʻa ma ke kālepa me 2, 6-di-tert-butylp-cresol (BHT) e kāohi i ka hana ʻana o nā peroxides organik. I ka manawa like, ʻaʻole pono e hoʻomaloʻo ʻia ʻo THF no ka mea e hoʻopili ʻia nā peroxides organik i loko o ke koena distillation.

Nā hana palekana:hana pani ʻia, ea piha. Pono e hoʻomaʻamaʻa kūikawā ʻia nā mea hana a mālama pono i nā kaʻina hana. Manaʻo ʻia e ʻaʻahu nā mea hana i kahi pale maka kinoea ʻano kānana (hapa pale maka), nā aniani pale palekana, nā lole anti-static, a me nā mīkina lima pale ʻaila laholio. E mālama mamao mai ke ahi, ke kumu wela, ʻaʻohe puhi paka ma kahi hana. E hoʻohana i nā ʻōnaehana ea a me nā lako hana pale pahū. E pale i ka mahu mai ka puka ʻana i ka ea o ka wahi hana. E pale i ka hoʻopili ʻana me nā oxidants, nā waikawa a me nā kumu. Pono e hoʻomalu ʻia ka nui o ke kahe ʻana i ka wā e hoʻopiha ai, a pono e loaʻa kahi mea hoʻoheheʻe honua e pale ai i ka hōʻiliʻili electrostatic. I ka wā e lawelawe ai, pono e hana i ka hoʻouka māmā a me ka wehe ʻana e pale aku i ka hōʻino ʻana i ka ʻōpala a me nā ipu. Hoʻolako ʻia me nā ʻano like ʻole a me ka nui o nā lako ahi a me nā lako lapaʻau pilikia leakage. Hiki i kahi ipu hakahaka ke loaʻa nā koena ʻino.

Nā hana palekana no ka mālama ʻana:ʻO ka maʻamau, he mea pale ka waiwai. E mālama i loko o kahi hale kūʻai anuanu a me ka ea. E mālama ʻia mai ke ahi a me ka wela. ʻAʻole pono e ʻoi aku ka mahana o ka hale kūʻai ma mua o 30℃. Pono e sila ʻia ka pūʻolo a ʻaʻole e pili me ka ea. Pono e mālama ʻokoʻa ʻia mai nā mea hoʻoheheʻe, nā waikawa a me nā kumu, a ʻaʻole pono e hui pū ʻia. Hoʻohana ʻia nā kukui a me nā hale ea e pale aku i ka pahū. Mai hoʻohana i nā lako mīkini a me nā mea hana e maʻalahi i ka ʻā ʻana. Pono e hoʻolako ʻia kahi mālama me nā lako lapaʻau pilikia leak a me nā mea paʻa kūpono.

Pūʻolo: 180KG/pahu