Iyiphi inqubo yokuphamba kwe-cellulose ether?

Inqubo yokuphambuka kwezithambekela ze-cellulose ifaka izinyathelo eziningana zokukhipha iselula evela ezintweni ezibonakalayo ezingavuthiwe futhi ngemuva kwalokho ukuyiguqula ibe yi-cellulose. I-Cellulose Tafers iyizinhlanganisela eziguquguqukayo ezinezicelo ezinhlobonhlobo zezimboni, kufaka phakathi ama-Pharmaceuticals, ukudla, izindwangu nokwakha. Inqubo yokuphamba ibalulekile ukuthola isendlalelo esezingeni eliphakeme, impahla eluhlaza yokukhiqizwa kwezithathekisa ze-cellulose. Okulandelayo incazelo eningiliziwe yenqubo yokuphahlazeka kwe-cellulose ether:

1. Ukukhethwa kwezinto ezibonakalayo:

Inqubo yokuphamba iqala ngokukhethwa kwezinto eziluhlaza eziqukethe i-cellulose. Imithombo ejwayelekile ifaka izinkuni, ukotini, nezinye izicucu zezitshalo. Ukukhethwa kwezinto zokwakha ezivuthiwe kuncike ezicini ezifana nokutholakala kwezimali, izindleko kanye nezakhiwo ezifiselekayo.

2. Indlela yokwenza i-pulp:

Kunezindlela eziningi ze-cellulose Phringping, ikakhulukazi kufaka phakathi ukuphahlazeka kwamakhemikhali kanye nokugibela imishini.

3. Ukuphambuka kwamakhemikhali:

I-Kraft Prine Phring: ifaka ukwelapha ama-chips izinkuni ngenhlanganisela ye-sodium hydroxide ne-sodium sulfide. Le nqubo inciphisa i-lignin, ishiye ngemuva kwemicu ye-cellulosic.

Ukuphambuka kwe-Sulfite Phring: Kusetshenziswa i-sulfurous acid noma i-bisulfite ukudiliza i-lignin ku-feedstock.

I-Organic Solvent Prineng: Kusetshenziswa izixazululo ze-organic njenge-ethanol noma i-methanol ukuncibilikisa ubumbano kanye nokuhlukaniswa kwemicu ye-cellulose.

4. Ukuphambuka kwemishini:

I-Stone-Ground Wood Prineng: Kubandakanya ukugaya izinkuni phakathi kwamatshe ukuze kuhlukaniswe imicu.

I-Refiper Mechanical Phringping: Isebenzisa amandla okwenziwa ngemishini ukuhlukanisa imicu ngokucwilisa ama-chip izinkuni.

5. Ukuqhuma:

Ngemuva kokuphambuka, i-cellulose iba nenqubo yokufaka ngokuthengisa ukususa ukungcola nombala. I-Chlorine, i-chlorine dioxide, i-hydrogen peroxide noma i-oksijini ingasetshenziswa ngesikhathi sesigaba se-bleachi.

5 .. Ukuguqulwa kwe-Celsulose:

Ngemuva kokuhlanzwa, i-cellulose iguqulwa ukukhiqiza izipho lezinto ze-cellulose. Izindlela ezijwayelekile zifaka ukusheshisa, ukucaciswa kanye nokunye ukusabela kwamakhemikhali ukuze kushintshe izakhiwo zomzimba nezamakhemikhali ze-cellulose.

6. Inqubo yokukhetha:

I-Alkalization: Ukwelapha iselula nge-alkali (imvamisa i-sodium hydroxide) ukukhiqiza i-Alkali Cellulose.

Ukungeza ama-ejenti aphenyazayo: I-Alkaline Cellulose iphendula ngama-ejenti athethelele (njengama-alkyl haldes noma i-Alkylene oxides) ukwethula amaqembu etherther ekwakhekeni kwesendlalelo.

Ukungathathi hlangothi: hlangothi inhlanganisela yokuphendula ukuze unqamule ukusabela futhi uthole umkhiqizo oyifunayo we-cellulose ether.

7. Ukugeza nokomisa:

Umkhiqizo weCellulose Ether uyageza ukuze ususe imikhiqizo nokungcola. Ngemuva kokuhlanza, okuqukethwe komiswa ukufeza okuqukethwe umswakama oyifunayo.

8. Ukugaya nokuhlola:

I-Dry Cellulose Afers ingaba yindawo yokuthola osayizi abathile bezinhlayiya. Ukuvinjelwa kusetshenziselwa ukuhlukanisa izinhlayiya zosayizi odingekayo.

8. Ukulawulwa kwekhwalithi:

Izindlela zokulawula ezisezingeni elifanele ziyenziwa ukuqinisekisa ukuthi izipho ze-cellulose zihlangabezana namazinga athile. Lokhu kufaka phakathi ukuhlolwa kwe-viscosity, izinga lokufaka esikhundleni, okuqukethwe umswakama namanye amapharamitha afanele.

9. Ukupakishwa nokulethwa:

Umkhiqizo wokugcina we-cellulose ether uhlanganiswe futhi uhanjiswa kwizimboni ezahlukahlukene. Ukupakishwa okufanele kuqinisekisa ukuthi ikhwalithi yomkhiqizo igcinwa ngesikhathi sokugcina nokuhamba.

Inqubo yokuphambuka ye-cellulose ether uhlelo oluyinkimbinkimbi lwezinyathelo ezibandakanya ukukhethwa kwezinto ezingavuthiwe, indlela yokuphamba, ukuxubha, ukuguqulwa kwe-cellulose, ukugeza, ukugeza kwekhwalithi. Isinyathelo ngasinye sibucayi ekunqumeni ikhwalithi nezakhiwo ze-cellulose ether ekhiqizwayo, okwenza kube lula ukuthola izicelo ezahlukahlukene. Intuthuko yezobuchwepheshe iyaqhubeka nokwenza ngcono nokwandisa lezi zinqubo ukwandisa ukusebenza kahle kanye nokusimama kwe-cellulose ether ether.