Ntlafatso ea selulose ea Hydroxyethyl

Ntlafatso eaHydroxyethyl Cellulose(HEC) e kenyelletsa ho sebetsana le thepa e tala ho ntlafatsa bohloeki ba eona, botsitso le thepa bakeng sa lits'ebetso tse ikhethileng. Mona ke kakaretso ea ts'ebetso ea ntlafatso ea HEC:

1. Khetho ea Lintho tse tala:

Ts'ebetso ea ntlafatso e qala ka khetho ea selulose ea boleng bo holimo e le thepa e tala. Cellulose e ka fumanoa mehloling e fapaneng, joalo ka makhasi a lehong, lithara tsa k'hothone, kapa lisebelisoa tse ling tse thehiloeng ho semela.

2. Tlhoekiso:

Thepa e tala ea cellulose e hloekisoa ho tlosa litšila tse kang lignin, hemicellulose le likarolo tse ling tse seng tsa cellulosic. Ts'ebetso ena ea tlhoekiso hangata e kenyelletsa ho hlatsoa, ​​​​ho soeufala, le ho phekola ka lik'hemik'hale ho ntlafatsa bohloeki ba selulose.

3. Etherification:

Kamora ho hloekisoa, selulose e fetoloa lik'hemik'hale ka etherification ho hlahisa lihlopha tsa hydroxyethyl mokokotlong oa cellulose, e leng se etsang hore ho thehoe Hydroxyethyl Cellulose (HEC). Karabelo ea etherification hangata e kenyelletsa tšebeliso ea alkali metal hydroxides le ethylene oxide kapa ethylene chlorohydrin.

4. Ho Neutralization le Ho Hlatsoa:

Ka mor'a etherification, motsoako oa karabelo o fokotsehile ho tlosa alkali e feteletseng le ho fetola pH. Sehlahisoa se se nang lehlakore se hlatsuoa hantle ho tlosa lik'hemik'hale tse setseng le lihlahisoa tse tsoang karabelong.

5. Sefa le ho Omisa:

Tharollo e hloekisitsoeng ea HEC e tlhotliloeng ho tlosa likaroloana tse setseng tse tiileng kapa litšila. Ka mor'a ho sefa, tharollo ea HEC e ka kenngoa, ha ho hlokahala, ebe e omisoa ho fumana mofuta oa ho qetela oa phofshoana kapa granular oa HEC.

6. Taolo ea Boleng:

Ho pholletsa le ts'ebetso ea ntlafatso, mehato ea ho laola boleng e kenngoa ts'ebetsong ho netefatsa ho tsitsisa, ho hloeka, le ts'ebetso ea sehlahisoa sa HEC. Liteko tsa taolo ea boleng li ka kenyelletsa tekanyo ea viscosity, tlhahlobo ea boima ba limolek'hule, tlhahlobo ea boemo ba mongobo, le litlhahlobo tse ling tsa 'mele le lik'hemik'hale.

7. Ho paka le ho boloka:

Hang ha e hloekisitsoe, sehlahisoa sa HEC se kenngoa ka har'a lijana kapa mekotla e loketseng bakeng sa polokelo le lipalangoang. Ho paka ka nepo ho thusa ho sireletsa HEC ho tsoa tšilafalo, mongobo le lintho tse ling tsa tikoloho tse ka amang boleng ba eona.

Lisebelisoa:

Refined Hydroxyethyl Cellulose (HEC) e fumana lits'ebetso tse ngata ho pholletsa le liindasteri tse fapaneng, ho kenyelletsa:

• Kaho: E sebelisoa e le setei, mofetoleli oa rheology, le ho boloka metsi lihlahisoa tse thehiloeng ho samente, lipente, lirafshoa le likhomaretsi.
• Tlhokomelo ea Botho le Litlolo: E sebelisoa e le setei, stabilizer, le filimi ea pele ea litlolo, litlolo, li-shampoo le lihlahisoa tse ling tsa tlhokomelo ea motho.
• Pharmaceutical: E sebelisoa e le ntho e tlamang, e senyang, le e laoloang-e lokolloang matlapeng a meriana, li-capsules le li-suspension tsa molomo.
• Lijo: E hiriloe e le seteifatsi, emulsifier, le stabilizer lihlahisoa tsa lijo tse kang li-sauces, li-dressings le lihlahisoa tsa lebese.

Qetello:

Ntlafatso ea Hydroxyethyl Cellulose (HEC) e kenyelletsa mehato e 'maloa ea ho hloekisa le ho fetola thepa e tala ea selulose, e hlahisang polymer e ngata le e phahameng ea ts'ebetso e nang le lisebelisoa tse ngata liindastering tse kang kaho, tlhokomelo ea botho, meriana le lijo. Ts'ebetso ea ntlafatso e netefatsa ho tsitsisa, ho hloeka, le boleng ba sehlahisoa sa HEC, se nolofalletsang tšebeliso ea eona mekhoeng le lihlahisoa tse sa tšoaneng.