Ntlafatso ea Hydroxyethyl cellulose

Ntlafatso eaSelulose ea Hydroxyethyl(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 bakeng sa HEC:

1. Khetho ea Lisebelisoa tse Tala:

Ts'ebetso ea ntlafatso e qala ka khetho ea cellulose ea boleng bo holimo e le thepa e tala. Cellulose e ka fumanoa mehloling e fapaneng, joalo ka pulp ea lehong, linter tsa k'hothone, kapa thepa e 'ngoe e thehiloeng limela.

2. Tlhoekiso:

Selulose e tala 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 soeufatsa le kalafo ea lik'hemik'hale ho ntlafatsa bohloeki ba cellulose.

3. Ho fetola 'mala hore o se ke oa fetoha:

Kamora ho hlwekiswa, cellulose e fetoloa ka dikhemikhale ka ho etherification ho kenya dihlopha tsa hydroxyethyl mokokotlong wa cellulose, e leng se fellang ka ho thehwa ha Hydroxyethyl Cellulose (HEC). Dikarabelo tsa etherification hangata di kenyeletsa tshebediso ya alkali metal hydroxides le ethylene oxide kapa ethylene chlorohydrin.

4. Ho se nke lehlakore le ho hlatswa:

Kamora ho etherification, motsoako oa karabelo oa lokisoa ho tlosa alkali e ngata le ho lokisa pH. Sehlahisoa se lokisoang se hlatsuoa hantle ho tlosa lik'hemik'hale tse setseng le lihlahisoa tse ling tse setseng karabelong.

5. Ho sefa le ho omisa:

Tharollo ea HEC e hloekisitsoeng e sefshoa ho tlosa likaroloana kapa litšila tse setseng tse tiileng. Kamora ho sefshoa, tharollo ea HEC e ka 'na ea kopanngoa, haeba ho hlokahala, ebe ea omisoa ho fumana mofuta oa ho qetela oa HEC o phofshoana kapa oa granular.

6. Taolo ea Boleng:

Nakong eohle ea ts'ebetso ea ntlafatso, mehato ea taolo ea boleng e kenngoa tšebetsong ho netefatsa botsitso, bohloeki le ts'ebetso ea sehlahisoa sa HEC. Liteko tsa taolo ea boleng li ka kenyelletsa tekanyo ea ho teteana, tlhahlobo ea boima ba limolek'hule, ho fumana mongobo, le litlhahlobo tse ling tsa 'mele le tsa lik'hemik'hale.

7. Sephutheloana le Polokelo:

Hang ha sehlahisoa sa HEC se hloekisitsoe, se pakoa ka har'a lijana kapa mekotla e loketseng bakeng sa polokelo le ho tsamaisoa. Sephutheloana se nepahetseng se thusa ho sireletsa HEC ho tšilafalo, mongobo le mabaka a mang a tikoloho a ka amang boleng ba eona.

Likopo:

Cellulose e Hloekisitsoeng ea Hydroxyethyl (HEC) e fumana lits'ebetso tse ngata liindastering tse fapaneng, ho kenyeletsoa:

• Kaho: E sebelisoa e le sesebelisoa sa ho teteana, ho fetola rheology, le ho boloka metsi lihlahisoa tse entsoeng ka samente, lipente, lipente le likhomaretsi.
• Tlhokomelo ea Motho ka Mong le Litlolo: E sebelisoa e le setefatsi, se tiisang letlalo, le se etsang filimi li-lotion, li-cream, li-shampoo le lihlahisoa tse ling tsa tlhokomelo ea motho ka mong.
• Meriana: E sebelisoa e le ntho e kopanyang, e qhalang, le e laolang ho lokolla matlapeng a meriana, li-capsule le li-suspension tse nooang.
• Lijo: E sebelisoa e le sethibisi, se kopanyang le se tsitsisang lijong tse kang lisoso, li-dressing le lihlahisoa tsa lebese.

Qetello:

Ho Ntlafatsa Hydroxyethyl Cellulose (HEC) ho kenyelletsa mehato e 'maloa ea ho hloekisa le ho fetola thepa e tala ea cellulose, e leng se fellang ka polymer e feto-fetohang le e sebetsang hantle e nang le mefuta e mengata ea lits'ebetso liindastering tse kang tsa kaho, tlhokomelo ea botho, meriana le lijo. Ts'ebetso ea ho ntlafatsa e netefatsa botsitso, bohloeki le boleng ba sehlahisoa sa HEC, e nolofalletsang ts'ebeliso ea sona mefuteng le lihlahisoa tse fapaneng.