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Ziziphi iimpawu kunye nokusetyenziswa kwe-ethyl cellulose?

I-Ethyl cellulose (i-Ethyl cellulose ether), eyaziwa ngokuba yi-cellulose ether, ekubhekiselwa kuyo njenge-EC.
Ukubunjwa kweemolekyuli kunye nefomula yesakhiwo: [C6H7O2 (OC2H5) 3] n.
1.Ukusebenzisa
Le mveliso inemisebenzi yokudibanisa, ukuzalisa, ukwenza ifilimu, njl. njengezilwanyana kwezolimo kunye nokufuywa kwezilwanyana Izongezo zokutya, ezisetyenziselwa i-adhesive kwiimveliso ze-elektroniki kunye neepropellants zomkhosi.
2. Iimfuno zobugcisa
Ngokokusetyenziswa okwahlukeneyo, i-EC yorhwebo inokohlulwa ibe ngamacandelo amabini: ibakala lemizi-mveliso kunye nebakala lamayeza, kwaye ngokubanzi ziyanyibilika kwizinyibilikisi zendalo.Kwibakala le-EC lamayeza, umgangatho walo womgangatho kufuneka uhlangabezane nemigangatho ye-Chinese Pharmacopoeia 2000 edition (okanye i-USP XXIV/NF19 edition kunye ne-Japan Pharmacopoeia JP standard).
3. Iimpawu zomzimba kunye neekhemikhali
1. Imbonakalo: I-EC imhlophe okanye i-gray powder powder ekhanyayo, ayinavumba.
2. Iipropathi: i-EC yorhwebo ayinyibiliki ngokubanzi emanzini, kodwa inyibilika kwizinyibilikisi ezahlukeneyo zezinto eziphilayo.Inozinzo olululo lwe-thermal, isiqulatho sothuthu esiphantsi kakhulu xa sitshisiwe, kwaye ayifane incamathele okanye ivakale ihlaba.Inokwenza ifilimu enzima.Isenako ukugcina ukuguquguquka.Le mveliso ayinayo ityhefu, inezixhobo ezinamandla ezichasene ne-biological, kwaye i-inert ye-metabolically inert, kodwa ijwayele ukuthotywa kwe-oxidative phantsi kokukhanya kwelanga okanye ukukhanya kwe-ultraviolet.Ngenjongo eyodwa ye-EC, kukho iindidi ezinyibilikayo kwi-lye kunye namanzi acocekileyo.Kwi-EC kunye neqondo lokutshintshela ngaphezu kwe-1.5, i-thermoplastic, ene-softening point ye-135 ~ 155 ° C, i-melting point ye-165 ~ 185 ° C, i-pseudo ethile ye-gravity ye-0.3 ~ 0.4 g / cm3, kunye nesalamane Ubuninzi be-1.07 ~ 1.18 g/cm3.Iqondo le-etherification ye-EC lichaphazela ukunyibilika, ukufunxa kwamanzi, iipropati zomatshini kunye neempawu zokushisa.Njengoko iqondo le-etherification lisanda, ukunyibilika kwi-lye kuncipha, ngelixa ukunyibilika kwizinyibilikisi ze-organic kukhula.Inyibilika kwizinyibilikisi ezininzi eziphilayo.I-solvent esetyenziswa ngokuqhelekileyo yi-toluene/ethanol njenge-4/1 (ubunzima) i-solvent exutyiweyo.Iqondo lokunyuka kwe-etherification liyanda, i-softening point kunye ne-hygroscopicity iyancipha, kwaye ubushushu bokusebenzisa ngu-60 ° C ~ 85 ° C.Amandla e-tensile 13.7 ~ 54.9Mpa, ukuxhathisa umthamo 10 * e12 ~ 10 * e14 ω.cm
I-Ethyl cellulose (DS: 2.3-2.6) yi-ether ye-cellulose engekho i-ionic enganyibiliki emanzini kodwa i-soluble kwi-solvents eziphilayo.
1.Akukho lula ukutshisa.
2.Ukuzinza okuhle kwe-thermal kunye ne-thermos-plasticity egqwesileyo.
3.Ayitshintshi umbala kukukhanya kwelanga.
4.Ukuguquguquka okuhle.
5.Iipropati ezilungileyo ze-dielectric.
I-6.Inokumelana okugqwesileyo kwe-alkali kunye nokuxhatshazwa kwe-asidi ebuthakathaka.
7.Ukusebenza kakuhle kokuchasana nokuguga.
I-8.Ukumelana netyuwa elungileyo, ukumelana nokubanda kunye nokuxhathisa ukufunxa ukufuma.
I-9.Izinzile kwiikhemikhali kwaye ayiyi konakala kwisitoreji sexesha elide.
I-10.Inokuhambelana neerasi ezininzi kwaye inokuhambelana kakuhle nazo zonke iiplastiki.
11.Kulula ukutshintsha umbala phantsi kommandla oqinileyo we-alkaline kunye nobushushu.
4. Indlela yokuphelisa
Awona machiza asetyenziswa ngokuqhelekileyo axutyiweyo e-ethyl cellulose (DS: 2.3 ~ 2.6) ziihydrocarbons ezinuka kamnandi kunye neealkoholi.I-aromatics ingaba yibenzene, toluene, ethylbenzene, xylene, njl., kunye nenani le-60-80%;i-alcohols ingaba yi-methanol, i-ethanol, njl., kunye nesixa se-20-40%.Yongeza kancinane i-EC kwisikhongozelo esine-solvent ephantsi kokuvuselela ide imanziswe ngokupheleleyo kwaye inyibilike.
Inombolo yeCAS: 9004-57-3
5. Isicelo
Ngenxa yokunganyibiliki kwayo kwamanzi, i-ethyl cellulose isetyenziswa kakhulu njenge-tablet binder kunye ne-film coating material, njl.
Isetyenziswe njengezinto ezixubeneyo ukulungiselela amalungiselelo okukhutshwa okuzinzileyo kunye neepellets ezizinzileyo;
Isetyenziswe njengento encedisayo ye-encapsulation ukulungiselela i-microcapsules ekhutshwe ngokuqhubekayo, ukwenzela ukuba umphumo weziyobisi unokukhutshwa ngokuqhubekayo kwaye uthintele ezinye izidakamizwa ezinyibilikayo emanzini ukuba zisebenze ngaphambi kwexesha;
Inokusetyenziswa kwakhona njenge-dispersant, stabilizer, kunye ne-agent egcina amanzi kwiifom ezahlukeneyo ze-dosage yamayeza ukukhusela ukufuma kunye nokuwohloka kwamayeza kunye nokuphucula ukugcinwa okukhuselekileyo kwamacwecwe.


Ixesha lokuposa: Mar-28-2023