Ethyl cellulose(Ethyl cellulose ether), yomwe imadziwikanso kuti cellulose ether, yotchedwa EC.
Mapangidwe a mamolekyu ndi kapangidwe kake: [C6H7O2(OC2H5)3] n.
1. Kugwiritsa
Mankhwalawa ali ndi ntchito zomangira, kudzaza, kupanga mafilimu, etc. Amagwiritsidwa ntchito popanga mapulasitiki opangidwa ndi utomoni, zokutira, zolowa m'malo mwa mphira, inki, zipangizo zotetezera, komanso zimagwiritsidwa ntchito ngati zomatira, zomangira nsalu, ndi zina zotero.
2. Zofunikira zaukadaulo
Malinga ndi ntchito zosiyanasiyana, malonda EC akhoza kugawidwa m'magulu awiri: mafakitale kalasi ndi mankhwala kalasi, ndipo zambiri sungunuka mu zosungunulira organic. Kwa kalasi yamankhwala EC, mulingo wake wamtundu uyenera kukwaniritsa miyezo ya Chinese Pharmacopoeia 2000 edition (kapena USP XXIV/NF19 edition ndi Japanese Pharmacopoeia JP standard).
3. Thupi ndi mankhwala katundu
1. Maonekedwe: EC ndi woyera kapena kuwala imvi madzi madzi ufa, fungo.
2. Properties: malonda EC zambiri osasungunuka m'madzi, koma sungunuka mu zosungunulira zosiyanasiyana organic. Ili ndi kukhazikika bwino kwa kutentha, phulusa lochepa kwambiri likatenthedwa, ndipo silimamatira kapena kumva kutsekemera. Ikhoza kupanga filimu yolimba. Ikhoza kukhalabe yosinthasintha. Mankhwalawa ndi opanda poizoni, ali ndi mphamvu zotsutsana ndi tizilombo toyambitsa matenda, ndipo sakhala ndi mphamvu zowonongeka, koma amatha kuwonongeka kwa okosijeni ndi kuwala kwa dzuwa kapena kuwala kwa ultraviolet. Pazolinga zapadera za EC, palinso mitundu yomwe imasungunuka mu lye ndi madzi oyera. Pakuti EC ndi digiri ya m'malo pamwamba 1.5, ndi thermoplastic, ndi kufewetsa mfundo 135 ~ 155 ° C, malo osungunuka 165 ~ 185 ° C, pseudo enieni yokoka 0.3 ~ 0.4 g/cm3, ndi kachulukidwe wachibale wa 1.07/3cm. Mlingo wa etherification wa EC umakhudza kusungunuka, kuyamwa kwa madzi, zida zamakina ndi matenthedwe. Pamene mlingo wa etherification ukuwonjezeka, solubility mu lye amachepetsa, pamene solubility mu zosungunulira organic ukuwonjezeka. Zosungunuka m'ma organic solvents. Nthawi zambiri zosungunulira ntchito ndi toluene/ethanol monga 4/1 (kulemera) wosanganiza zosungunulira. Kuchuluka kwa etherification kumawonjezeka, malo ochepetsera ndi kuchepa kwa hygroscopicity, ndipo kutentha kwa ntchito ndi -60 ° C ~ 85 ° C. Kuthamanga mphamvu 13.7 ~ 54.9Mpa, voliyumu resistivity 10 * e12 ~ 10 * e14 ω.cm
Ethyl cellulose (DS: 2.3-2.6) ndi non-ionic cellulose ether yomwe imasungunuka m'madzi koma imasungunuka mu zosungunulira za organic.
1.Zosavuta kuwotcha.
2.Kukhazikika kwamafuta abwino komanso thermos-plasticity yabwino kwambiri.
3.Sikusintha mtundu kukhala kuwala kwa dzuwa.
4.Kusinthasintha kwabwino.
5.Good dielectric katundu.
6.Ili ndi kukana kwambiri kwa alkali komanso kufooka kwa asidi.
7.Good anti-aging performance.
8.Kukana kwa mchere wabwino, kukana kuzizira komanso kukana kuyamwa kwa chinyezi.
9.Ndizokhazikika kwa mankhwala ndipo sizidzawonongeka posungira nthawi yaitali.
10.Itha kukhala yogwirizana ndi ma resin ambiri ndipo imagwirizana bwino ndi mapulasitiki onse.
11.N'zosavuta kusintha mtundu pansi pa malo amphamvu amchere ndi kutentha.
4. Njira yothetsera
Zosungunulira zomwe zimagwiritsidwa ntchito kwambiri pa ethyl cellulose (DS: 2.3 ~ 2.6) ndi ma hydrocarbon onunkhira ndi mowa. Aromatics akhoza kukhala benzene, toluene, ethylbenzene, xylene, etc., ndi kuchuluka kwa 60-80%; mowa akhoza kukhala methanol, Mowa, etc., ndi kuchuluka kwa 20-40%. Pang'onopang'ono kuwonjezera EC ku chidebe munali zosungunulira pansi oyambitsa mpaka kwathunthu wetted ndi kusungunuka.
Nambala ya CAS: 9004-57-3
5. Kugwiritsa ntchito
Chifukwa cha kusasungunuka kwake m'madzi,ethyl celluloseamagwiritsidwa ntchito makamaka ngati chomangira piritsi ndi zinthu zokutira filimu, etc., ndipo angagwiritsidwenso ntchito ngati matrix zinthu blocker kukonzekera mitundu yosiyanasiyana ya matrix kumasulidwa mosalekeza mapiritsi;
Amagwiritsidwa ntchito ngati zinthu zosakanikirana pokonzekera zokonzekera zomasulidwa zokhazikika komanso ma pellets omasulidwa;
Amagwiritsidwa ntchito ngati encapsulation zinthu zothandizira kukonzekera zisathe-kumasulidwa microcapsules, kuti zotsatira za mankhwala akhoza kumasulidwa mosalekeza ndi kuteteza madzi sungunuka mankhwala kuti ayambe kugwira ntchito msanga;
Itha kugwiritsidwanso ntchito ngati dispersant, stabilizer, and water-retaining agent mumitundu yosiyanasiyana ya mankhwala kuti ateteze chinyezi ndi kuwonongeka kwa mankhwala ndikuwongolera kusungidwa kotetezeka kwa mapiritsi.
Nthawi yotumiza: Apr-28-2024