Ethyl cellulose(Ethyl cellulose ether), inozivikanwawo se cellulose ether, inonzi EC.
Kuumbwa kwemamorekuru uye chimiro chemaitiro: [C6H7O2(OC2H5)3] n.
1.Kushandisa
Ichi chigadzirwa chine mabasa ekubatanidza, kuzadza, kugadzira firimu, etc. Inoshandiswa kune resin synthetic plastiki, coatings, rubber substitutes, ingi, insulating zvinhu, uye inoshandiswawo seadhesives, textile finishing agents, nezvimwewo, uye inogona kushandiswa semhuka mune zvekurima nekupfuya Feed additive, inoshandiswa sekunamatira mune zvigadzirwa zvemagetsi uye propellants yehondo.
2. Technical zvinodiwa
Zvinoenderana nekushandiswa kwakasiyana, yekutengeserana EC inogona kukamurwa kuita mapoka maviri: giredhi reindasitiri uye giredhi remishonga, uye inowanzonyungudika muorganic solvents. Pagiredhi remishonga EC, chiyero chemhando yayo chinofanirwa kusangana nezviyero zveChinese Pharmacopoeia 2000 edition (kana USP XXIV/NF19 edition uye Japanese Pharmacopoeia JP standard).
3. Muviri uye makemikari zvinhu
1. Kuonekwa: EC yakachena kana chiedza grey fluid powder, isina kunhuwa.
2. Properties: commercialized EC kazhinji isinganyunguriki mumvura, asi soluble mune zvakasiyana organic zvinonyungudutsa. Iine kugadzikana kwakanaka kwekupisa, yakaderera zvakanyanya madota kana yapiswa, uye kashoma kunamatira kana kunzwa kurwadza. Inogona kugadzira firimu rakaoma. Inogona kuramba ichichinjika. Ichi chigadzirwa hachina chepfu, chine anti-biological properties, uye chine metabolically inert, asi chinowanzoita oxidative degradation pasi pezuva kana ultraviolet chiedza. Kune yakakosha-chinangwa EC, kune zvakare marudzi anonyungudika mulye uye yakachena mvura. Kune EC ine dhigirii yekutsiva pamusoro pe1.5, inonzi thermoplastic, ine nzvimbo yekunyorovesa ye135 ~ 155 ° C, nzvimbo yekunyunguduka ye165 ~ 185 ° C, pseudo chaiyo giravhiti ye 0.3 ~ 0.4 g/cm3, uye hukama hwehukama hwe1.87/3cm. Iyo dhigirii ye etherification yeEC inokanganisa kunyungudika, kunyura kwemvura, mechanical zvivakwa uye zvinopisa zvinhu. Sezvo dhigirii re etherification richiwedzera, kunyungudika mulye kunoderera, ukuwo kunyungudika muorganic solvents kunowedzera. Soluble mune zvakawanda organic solvents. Inonyanya kushandiswa solvent ndeye toluene/ethanol se4/1 (huremu) yakasanganiswa solvent. Dhigirii ye etherification inowedzera, iyo inopfava uye hygroscopicity inoderera, uye tembiricha yekushandisa i -60 ° C ~ 85 ° C. Tensile simba 13.7 ~ 54.9Mpa, vhoriyamu resistivity 10 * e12 ~ 10 * e14 ω.cm
Ethyl cellulose (DS: 2.3-2.6) isiri-ionic cellulose ether isinganyungudike mumvura asi inonyungudika muorganic solvents.
1.Not nyore kupisa.
2.Good thermal stability uye yakanakisisa thermos-plasticity.
3.Haisi kuchinja ruvara kune chiedza chezuva.
4.Good flexibility.
5.Good dielectric properties.
6.Iine yakanakisa alkali kushorwa uye isina kusimba acid inopikisa.
7.Good anti-aging performance.
8.Good munyu kuramba, kutonhora kuramba uye mwando absorption kuramba.
9.Iyo yakagadzikana kumakemikari uye haizoparari mukuchengetedza kwenguva refu.
10.Inogona kuwirirana nemafuta akawanda uye ine kuwirirana kwakanaka nevose plasticizers.
11.Zviri nyore kuchinja ruvara pasi pemamiriro e-alkaline yakasimba uye kupisa.
4. Disolution nzira
Zvinonyanya kushandiswa zvinosanganiswa zvinonyungudutsa zve ethyl cellulose (DS: 2.3 ~ 2.6) zvinonhuhwirira mahydrocarbons uye doro. Aromatics inogona kuva benzene, toluene, ethylbenzene, xylene, nezvimwewo, ine huwandu hwe60-80%; doro rinogona kuva methanol, ethanol, nezvimwewo, nehuwandu hwe20-40%. Zvishoma nezvishoma wedzera EC mumudziyo une solvent pasi pekukurudzira kusvika yanyatsonyorova uye yanyungudika.
Nhamba yeCAS: 9004-57-3
5. Kushandisa
Nekuda kwekusagadzikana kwayo kwemvura,ethyl celluloseinonyanya kushandiswa sepiritsi binder uye firimu coating material, nezvimwewo, uye inogonawo kushandiswa sematrix material blocker kugadzirira marudzi akasiyana-siyana ematrix akatsigira-kusunungurwa mapiritsi;
Inoshandiswa sechinhu chakavhenganiswa kugadzirira yakavharidzirwa-yakasunungurwa-kusunungurwa gadziriro uye inosimudzira-kusunungurwa pellets;
Iyo inoshandiswa se encapsulation yekubatsira zvinhu kugadzirira yakaramba-yakasunungurwa microcapsules, kuitira kuti zvinodhaka zvinodhaka zvinogona kusunungurwa nguva dzose uye kudzivirira mamwe madhiragi anonyungudika nemvura kubva pakuita nguva isati yakwana;
Inogonawo kushandiswa seanoparadzira, stabilizer, uye muchengeti wemvura mumhando dzakasiyana-siyana dzemishonga kudzivirira unyoro uye kuora kwemishonga uye kugadzirisa kuchengetedza kwakachengeteka kwemapiritsi.
Nguva yekutumira: Kubvumbi-28-2024