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Methyl cellulose e sebelisoa haholo
Tlhaloso
Methylcellulose ke non-ionic cellulose ether, e hlahisoang ke etherification ka ho hlahisa lihlopha tsa methyl ka selulose.
Methylcellulose ke selulose methyl ether. Maqephe a manyane a bosoeu kapa a bosehla bo bobebe kapa boputsoa bo bobebe, bo bosehla kapa phofo. Ha e na monko ebile ha e latsoehe, hoo e ka bang 27% ho isa ho 32% ea lihlopha tsa hydroxyl tse teng ka mokhoa oa lihlopha tsa methoxy. Mefuta e fapaneng ea methyl cellulose e na le likhato tse fapaneng tsa polymerization, ho tloha ho 50 ho isa ho 1000; 'Me boima ba eona ba molek'hule (karolelano) bo tloha ho 10000 ho isa ho 22000 Da,' me tekanyo ea eona ea ho fetola e hlalosoa e le palo e tloaelehileng ea lihlopha tsa methoxy, tse hokahaneng le yuniti e 'ngoe le e' ngoe ea glucose anhydride ka ketane.
tlhaloso2
Thepa ea 'Mele le ea Lik'hemik'hale
1, Ponahalo:Phofo e t?oeu kapa e t?oeu ea fibrous kapa granular, e sa nkheng ebile e sa latsoehe.
2, Tharollo:E batlang e sa qhibilihe ka ethanol, ether, chloroform (1: 1) ka har'a motsoako e ka etsa tharollo e hlakileng kapa e emisitsoeng ea viscous. Ka 80-90 oC metsi a chesang a ho ruruha ka potlako, ho pholile ka mor'a ho qhibiliha ka potlako, ho qhibiliha ha metsi ka mocheso oa kamore ho tsitsitse, mocheso o phahameng oa gel, E fetoha phetoho e ka fetoloang ho tloha gel ho ea ho qhibiliha ka mor'a ho futhumala le ho pholile.
3, Lit?obotsi:Ho koloba ka mokhoa o fetisisang, ho hasana, ho khomarela, ho teteaneng, ho etsa emulsifying, ho t?oara metsi le ho etsa filimi, le ho se lekane ha oli. Filimi e na le thata e babatsehang, ho tenyetseha le ho pepeseha. Hobane ha e na ionic, e ka lumellana le li-emulsifiers tse ling, empa ho bonolo ho t?eloa letsoai 'me tharollo e tsitsitse ka pH 2-12.
4, Boima ba 'mele:1.3g/cm; boima bo bonahalang: 0.25-0.7 g/cm3.
5, mocheso oa ho fetoha ha mebala:190-200oC.
6, mocheso oa carbonization:225-230oC.
7, tsitsipano ea sefahleho:47-53 den/cn.
Tlhaloso ea lihlahisoa
Leqephe la Letsatsi la Tekheniki:
| Lebitso la morero | Lipont?o(55AX Series) |
| Methoxyl | 27.0-32.0 |
| Mocheso oa gel | 50-55 |
| Ho hloka boima bo omileng | ≤5 |
| Masala a tukang | ≤1 |
| T?epe e boima | ≤20 |
| Letsoai la Arsenic | ≤2 |
| Ph. | 5.0-8.0 |
| Viscosity | Sheba sehlopha sa viscosity |
Litlhaloso tsa viscosity
| Sehlopha | Tlhaloso | Range |
| Viscosity e tlase | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| Viscosity e phahameng | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| Viscosity e phahameng e eketsehileng | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |