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Ka whakamahia nuitia te Methyl cellulose
Whakaahuatanga
Ko te Methylcellulose he ether cellulose kore-ionic, ka puta mai i te etherification ma te whakauru i nga roopu methyl ki te cellulose.
Ko te Methylcellulose he cellulose methyl ether. He ma, he kowhai marama ranei he matūriki iti, he kawa, he paura ranei. Karekau he kakara me te reka, tata ki te 27% ki te 32% o nga roopu hydroxyl kei te ahua o nga roopu methoxy. Ko nga taumata rereke o te methyl cellulose he rereke nga nekehanga o te polymerization, mai i te 50 ki te 1000; A ko tana taumaha ngota (toharite) mai i te 10000 ki te 22000 Da, a ko tana tohu whakakapinga ko te tau toharite o nga roopu methoxy, e hono ana ki ia waeine glucose anhydride i runga i te mekameka.
whakaahuatanga2
āhuatanga ā-tinana, matū hoki
1, Te ahua:He ma, he ahua-ma ranei te paura kirikiri, kirikiri ranei, he hongi me te kore reka.
2, Rongoā:Tata korekore i roto i te waiwaro, te etera, te chloroform (1: 1) i roto i te ranunga ka taea te hanga i te wairewa maamaa, iri ranei. I roto i te 80-90 oC te wai wera te pupuhi tere, te whakamahana i muri i te whakakorenga tere, te whakakorenga wai i te waahi o te rūma he tino pumau, te teitei o te wera o te rangi, Ka puta te whakawhiti mai i te ra ki te whakakore i muri i te whakamahana me te whakamahana.
3, Ahuatanga:He pai te makuku, te whakamararatanga, te piri, te whakapakeke, te whakaemulsifying, te pupuri wai me te hanga kiriata, me te koretake o te hinu. Ko te kiriata he tino pakari, he ngawari me te marama. Na te mea he katote-kore, ka taea te hototahi ki etahi atu whakaemi, engari he ngawari ki te tote me te pumau te otinga ki te awhe pH 2-12.
4, Kiato:1.3g/cm; te kiato ahua: 0.25-0.7 g/cm3.
5, Te wera o te tae:190-200oC.
6, Te pāmahana waro:225-230oC.
7, Taumatau Mata:47-53 den/cn.



Whakatakotoranga hua
Pepa Ra Hangarau:
Ingoa kaupapa | Tohu(55AX Series) |
Methoxyl | 27.0-32.0 |
Te mahana o te ra | 50-55 |
Te kore taumaha maroke | ≤5 |
Te tahu toenga | ≤1 |
Te whakarewa taumaha | ≤20 |
Te tote arsenic | ≤2 |
Ph. | 5.0-8.0 |
Poneke | Tirohia te whakarōpūtanga pokey |
Nga whakaritenga o te pokey
Kāwai | Whakatakotoranga | Awhe |
Te pokey iti | 50 | 40-60 |
100 | 80-120 | |
400 | 350-450 | |
Te pokey teitei | 1000 | 800-1200 |
2000 | 1600-2400 | |
4000 | 3500-4500 | |
Pokey teitei ake | 30000 | 24000-36000 |
50000 | 45000-55000 | |
75000 | 70000-80000 | |
100000 | 85000-105000 |