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Methyl cellulose amagwiritsidwa ntchito kwambiri
Kufotokozera
Methylcellulose ndi non-ionic cellulose ether, yomwe imapangidwa ndi etherification poyambitsa magulu a methyl mu cellulose.
Methylcellulose ndi cellulose methyl ether. Tizilombo tating'onoting'ono tating'onoting'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono tating'ono ta golide. Zopanda fungo komanso zosakoma, pafupifupi 27% mpaka 32% yamagulu a hydroxyl omwe amapezeka ngati magulu a methoxy. Magawo osiyanasiyana a methyl cellulose ali ndi magawo osiyanasiyana a polymerization, kuyambira 50 mpaka 1000; Ndipo kulemera kwake kwa mamolekyulu (avareji) kumayambira 10000 mpaka 22000 Da, ndipo digiri yake yolowa m'malo imatanthauzidwa ngati kuchuluka kwamagulu a methoxy, omwe amalumikizidwa ndi gawo lililonse la glucose anhydride pa unyolo.
kufotokoza2
Zakuthupi ndi Zamankhwala
1, mawonekedwe:Zoyera kapena zoyera zoyera kapena ufa wa granular, wopanda fungo komanso wosakoma.
2, Yankho:Pafupifupi insoluble mu Mowa, etha, chloroform (1: 1) mu osakaniza akhoza kupanga momveka kapena inaimitsidwa viscous njira. Mu 80-90 oC madzi otentha kutupa mofulumira, kuzirala pambuyo kusungunuka mofulumira, kusungunuka kwa madzi kutentha kwa firiji kumakhala kokhazikika, gel osakaniza kutentha, Amasintha kusintha kuchokera ku gel kupita kusungunuka pambuyo pa kutentha ndi kuzizira.
3, Makhalidwe:Kunyowa kwabwino kwambiri, kubalalitsidwa, kumamatira, kukhuthala, emulsifying, kusunga madzi ndi kupanga filimu, komanso kusakwanira kwamafuta. Kanemayo ali ndi kulimba kwambiri, kusinthasintha komanso kuwonekera. Chifukwa sichikhala cha ionic, chikhoza kukhala chogwirizana ndi ma emulsifiers ena, koma n'chosavuta kutulutsa mchere ndipo yankho lake ndi lokhazikika pa pH 2-12.
4, Kachulukidwe:1.3g/cm;Kuchulukana kowonekera: 0.25-0.7 g/cm3.
5, Kutentha kwa kutentha:190-200 ° C.
6, Kutentha kwa Carbonization:225-230oC.
7, Kuthamanga kwapamwamba:47-53 den / cn.
Mafotokozedwe azinthu
Deti laukadaulo:
| Dzina la polojekiti | Zizindikiro (55AX Series) |
| Methoxyl | 27.0-32.0 |
| Kutentha kwa gel osakaniza | 50-55 |
| Kuuma kulemera | ≤5 |
| Kuwotcha zotsalira | ≤1 |
| Chitsulo cholemera | ≤20 |
| Arsenic mchere | ≤2 |
| Ph. | 5.0-8.0 |
| Viscosity | Onani kagayidwe ka viscosity |
Viscosity specifications
| Gulu | Kufotokozera | Mtundu |
| Low mamasukidwe akayendedwe | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| Kukhuthala kwakukulu | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| Owonjezera mkulu mamasukidwe akayendedwe | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |