0102030405
Ho?ohana nui ?ia ka methyl cellulose
wehewehe
?O ka Methylcellulose kahi ether cellulose non-ionic, i hana ?ia e ka etherification ma o ka ho?okomo ?ana i nā hui methyl i loko o ka cellulose.
?O ka Methylcellulose he cellulose methyl ether. Ke?oke?o a ?ula?ula melemele a ?ele?ele paha nā mea li?ili?i, filamentous a pauda paha. ?A?ala ?ole a ?ono ?ole, me kahi o 27% a 32% o nā pū?ulu hydroxyl i loa?a ma ke ?ano o nā pū?ulu methoxy. ?O nā pae like ?ole o ka methyl cellulose he mau degere like ?ole o ka polymerization, mai 50 a 1000; A ?o kona kaumaha molekala (awelika) mai 10000 a 22000 Da, a ua wehewehe ?ia kona degere o ka ho?ololi ?ana e like me ka helu awelika o nā pū?ulu methoxy, i ho?opili ?ia i kēlā me kēia ?āpana glucose anhydride ma ke kaulahao.
wehewehe2
Na Waiwai Kino a Kimia
1, Nānā:?O ka pauka fibrous ke?oke?o ke?oke?o a i ?ole ke?oke?o, ?a?ala ?ole a ?ono ?ole.
2, Ho?onā:Aneane hiki ole i ka ethanol, ether, chloroform (1: 1) i loko o ka hui 'ana i hiki ke hana i kahi ho'onā viscous a ho'oku'u 'ia. I ka 80-90 oC wai wela ka pehu wikiwiki, ho?omaha ma hope o ka ho?ohehe?e wikiwiki ?ana, ka ho?ohehe?e ?ana o ka wai ma ka lumi wela he pa?a loa, ke ki?eki?e wela gel, Ke ho?ololi nei ia i ka ho?ololi ?ana mai ka gel a i ka ho?ohehe?e ?ana ma hope o ka ho?omehana ?ana a me ka ho?olu?u.
3, Nā ?ano:Maika?i wettability, dispersion, adhesion, mānoanoa, emulsifying, wai-pa?a a me film-hana, a me ka aila impermeability. ?O ke ki?i?oni?oni he pa?akikī maika?i loa, hiki ke ma?alahi a me ka ?ike. No ka mea he non-ionic, hiki ke ho?ohālikelike me nā emulsifiers ?ē a?e, akā ma?alahi ka pa?akai a pa?a ka hopena i ka pae o ka pH 2-12.
4, ?ano nui:1,3g/cm;
5, Wehewehe ka wela:190-200oC.
6, ka wela o ka carbonization:225-230oC.
7, Ka ?ili ?ili:47-53 den/cn.
Hō?ike huahana
Pepa lā ?enehana:
| inoa papahana | Nā hō?ailona (55AX Series) |
| Methoxyl | 27.0-32.0 |
| Gel wela | 50-55 |
| Kaumaha malo?o ?ole | ≤5 |
| Ke ahi koena | ≤1 |
| Metala kaumaha | ≤20 |
| Paakai Arsenic | ≤2 |
| Ph. | 5.0-8.0 |
| ?O ka viscosity | E ?ike i ka ho?oka?awale ?ana o ka viscosity |
Nā kiko?ī kiko?ī viscosity
| Māhele | Hō?ike | Kaulana |
| Ha?aha?a viscosity | 50 | 40-60 |
| 100 | 80-120 | |
| 400 | 350-450 | |
| Ki?eki?e viscosity | 1000 | 800-1200 |
| 2000 | 1600-2400 | |
| 4000 | 3500-4500 | |
| ?Oi aku ka viscosity ki?eki?e | 30000 | 24000-36000 |
| 50000 | 45000-55000 | |
| 75000 | 70000-80000 | |
| 100000 | 85000-105000 |