ʻEtila kelulosa(Ethyl cellulose ether), i ʻike ʻia hoʻi ʻo cellulose ether, i kapa ʻia ʻo EC.
ʻO ka haku mele a me ke ʻano hoʻonohonoho: [C6H7O2(OC2H5)3] n.
1. Ke hoʻohana nei
Loaʻa i kēia huahana nā hana o ka hoʻopili ʻana, ka hoʻopiha ʻana, ka hana ʻana i nā kiʻiʻoniʻoni, a pēlā aku. Hoʻohana ʻia ia no nā plastics synthetic resin, nā uhi, nā pani rubber, nā ʻīnika, nā mea hoʻokaʻawale, a hoʻohana ʻia hoʻi he mau mea hoʻopili, nā mea hoʻopau lole, a pēlā aku, a hiki ke hoʻohana ʻia e like me nā holoholona i ka mahiʻai a me ka mahiʻai holoholona. Mea hoʻohui hānai, hoʻohana ʻia e like me ke kāpili i nā huahana uila a me nā mea hoʻoulu koa.
2. Nā koi loea
Wahi a nā hoʻohana like ʻole, hiki ke hoʻokaʻawale ʻia ka EC kalepa i ʻelua mau māhele: ka papa ʻoihana a me ka papa lāʻau lapaʻau, a ma ke ʻano laulā e hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe organik. No ka papa lāʻau lapaʻau EC, pono kona kūlana maikaʻi e kūlike me nā kūlana o ka Chinese Pharmacopoeia 2000 edition (a i ʻole USP XXIV/NF19 edition a me Japanese Pharmacopoeia JP standard).
3. Nā waiwai kino a me nā kemika
1. ʻAno: He keʻokeʻo a hina māmā paha ka pauka wai EC, ʻaʻohe ʻala.
2. Nā Waiwai: ʻO ka EC kalepa ʻia he mea hoʻoheheʻe ʻole ia i ka wai, akā hoʻoheheʻe ʻia i nā mea hoʻoheheʻe organik like ʻole. Loaʻa iā ia ke kūpaʻa wela maikaʻi, haʻahaʻa loa ka nui o ka lehu i ke puhi ʻia, a kakaʻikahi ka pipili a manaʻo paha he astringent. Hiki iā ia ke hana i kahi ʻili paʻakikī. Hiki nō iā ia ke mālama i ka maʻalahi. ʻAʻohe mea ʻawaʻawa kēia huahana, he mau waiwai anti-biological ikaika, a he inert metabolically, akā hiki ke hoʻohaʻahaʻa ʻia i ka oxidative ma lalo o ka lā a i ʻole ka mālamalama ultraviolet. No ka EC kumu kūikawā, aia kekahi mau ʻano e hoʻoheheʻe ʻia i ka lye a me ka wai maʻemaʻe. No ka EC me ke kekelē o ka pani ʻana ma luna o 1.5, he thermoplastic ia, me kahi kiko palupalu o 135 ~ 155 ° C, kahi kiko heheʻe o 165 ~ 185 ° C, kahi pseudo specific gravity o 0.3 ~ 0.4 g / cm3, a me kahi density pili o 1.07 ~ 1.18 g / cm3. ʻO ke kekelē o ka etherification o EC e pili ana i ka solubility, ka omo wai, nā waiwai mechanical a me nā waiwai thermal. I ka piʻi ʻana o ke kekelē o ka etherification, emi iho ka solubility i loko o ka lye, ʻoiai e piʻi ana ka solubility i loko o nā solvents organik. Hoʻoheheʻe ʻia i loko o nā solvents organik he nui. ʻO ka solvent i hoʻohana pinepine ʻia ʻo toluene/ethanol ma ke ʻano he 4/1 (kaumaha) solvent i hui ʻia. Piʻi ke kekelē o ka etherification, emi iho ke kiko palupalu a me ka hygroscopicity, a ʻo ka mahana hoʻohana he -60°C~85°C. ʻO ka ikaika tensile 13.7~54.9Mpa, resistivity volume 10*e12~10*e14 ω.cm
ʻO ka Ethyl cellulose (DS: 2.3-2.6) kahi ether cellulose non-ionic i hoʻoheheʻe ʻole ʻia i ka wai akā hoʻoheheʻe ʻia i loko o nā mea hoʻoheheʻe organik.
1. ʻAʻole maʻalahi ke puhi.
2. ʻO ke kūpaʻa wela maikaʻi a me ka thermos-plasticity maikaʻi loa.
3. ʻAʻole e hoʻololi i ke kala i ka lā.
4. Hoʻololi maikaʻi.
5. Nā waiwai dielectric maikaʻi.
6. He kūpaʻa alkali maikaʻi loa ia a me ke kūpaʻa waikawa nāwaliwali.
7. Hana maikaʻi anti-kahiko.
8. Maikaʻi ke kūpaʻa paʻakai, ke kūpaʻa anu a me ke kūpaʻa omo wai.
9. He paʻa ia i nā kemika a ʻaʻole e pala i ka mālama ʻana i ka wā lōʻihi.
10. Hiki ke kūlike me nā resins he nui a he kūpono maikaʻi me nā plasticizers āpau.
11. He mea maʻalahi ke hoʻololi i ke kala ma lalo o kahi kaiapuni alkaline ikaika a me ka wela.
4. Ke ʻano hoʻoheheʻe
ʻO nā mea hoʻoheheʻe hui ʻia i hoʻohana pinepine ʻia no ka ethyl cellulose (DS: 2.3~2.6) he mau hydrocarbons ʻala a me nā ʻalekohol. Hiki i nā ʻala ke benzene, toluene, ethylbenzene, xylene, a pēlā aku, me ka nui o 60-80%; hiki i nā ʻalekohol ke methanol, ethanol, a pēlā aku, me ka nui o 20-40%. E hoʻohui mālie i ka EC i ka pahu e loaʻa ana ka mea hoʻoheheʻe ma lalo o ka hoʻoulu ʻana a hiki i ka pulu loa ʻana a hoʻoheheʻe ʻia.
Helu CAS: 9004-57-3
5. Noi
Ma muli o kona paʻa ʻole i ka wai,ethyl cellulosehoʻohana nui ʻia ma ke ʻano he mea hoʻopaʻa papa a me ka mea uhi kiʻiʻoniʻoni, a pēlā aku, a hiki ke hoʻohana ʻia ma ke ʻano he mea pale mea matrix e hoʻomākaukau i nā ʻano papa hoʻokuʻu mau ʻia o ka matrix;
Hoʻohana ʻia ma ke ʻano he mea i hui ʻia e hoʻomākaukau i nā hoʻomākaukau hoʻokuʻu mau i uhi ʻia a me nā pellets hoʻokuʻu mau;
Hoʻohana ʻia ia ma ke ʻano he mea kōkua encapsulation e hoʻomākaukau i nā microcapsules hoʻokuʻu mau ʻia, i hiki ke hoʻokuʻu mau ʻia ka hopena o ka lāʻau a pale i kekahi mau lāʻau lapaʻau wai-hoʻoheheʻe ʻia mai ka hopena mua ʻole;
Hiki ke hoʻohana ʻia ma ke ʻano he mea hoʻolaha, mea hoʻopaʻa, a me ka mea mālama wai i nā ʻano lāʻau lapaʻau like ʻole e pale aku i ka makū a me ka hōʻino ʻana o nā lāʻau lapaʻau a hoʻomaikaʻi i ka mālama palekana ʻana o nā papa.
Ka manawa hoʻouna: ʻApelila-28-2024