DAAM: Feme ea Diacetone Acrylamide

Diacetone Acrylamide (DAAM) ke monomer e nang le mesebetsi e mengata e sebelisoang lits'ebetsong tse fapaneng tsa polymerization ho hlahisa li-resin, liphahlo, likhomaretsi le lisebelisoa tse ling tse hlokang botsitso bo matla ba mocheso, khanyetso ea metsi le thepa ea ho khomarela. DAAM e hlahella ka lebaka la sebopeho sa eona se ikhethang sa lik'hemik'hale le bokhoni ba ho feta liketsong tse hokahaneng le metsoako e meng, joalo ka adipic dihydrazide (ADH), e leng se fellang ka lisebelisoa tse nang le ts'ebetso e phahameng.

Matlotlo a Lik'hemik'hale a DAAM

• Lebitso la IUPAC:N-(1,1-Dimethyl-3-oxo-butyl)acrylamide
• Foromo ea Lik'hemik'hale:C9H15NO2
• Boima ba limolek'hule:169.22 g/mol
• Nomoro ea CAS:2873-97-4
• Ponahalo:Tšoeu e kristale e tiileng kapa phofo
• Ho qhibiliha ha metsi:E qhibilihang ka metsing, ethanol le metsoako e meng e qhibilihang ka polar
• Sebaka sa ho Qhibiliha:53°C ho isa ho 55°C

Lihlopha tsa Bohlokoa tsa Mesebetsi

1. Sehlopha sa Acrylamide:E kenya letsoho ho polymerizability ka liketso tse sa fetoheng.
2. Sehlopha sa Ketone:E fana ka libaka tse arabelang bakeng sa ho hokahana le metsoako e kang li-hydrazine.

Tlhahiso ea DAAM

DAAM e etsoa ka karabelo ea joala ba diacetone le acrylonitrile, e lateloa ke mohato oa catalytic hydrogenation kapa hydrolysis ho hlahisa sehlopha sa amide. Ts'ebetso ea tlhahiso e netefatsa sehlahisoa se hloekileng haholo se loketseng lits'ebetso tsa indasteri.

Mehato ea Bohlokoa ea Karabelo:

1. Diacetone Joala + Acrylonitrile → Motsoako oa Mokena-lipakeng
2. Hydrogenation kapa Hydrolysis → Diacetone Acrylamide

Litšebeliso tsa DAAM

1. Likhomaretsi

• Karolo ea DAAM:E ntlafatsa thepa ea ho kopanya ka ho khothaletsa ho hokahanya le botsitso ba mocheso.
• Mohlala:Likhomaretsi tse arabelang khatellong tse nang le matla a ntlafetseng a ho hlohlora le ho tšoarella.

2. Liaparo tse tsamaisoang ka metsi

• Karolo ea DAAM:E sebetsa e le sesebelisoa se etsang filimi se fanang ka ho hanyetsa metsi le ho tenyetseha ho hoholo.
• Mohlala:Pente e khabisitsoeng le ea indasteri bakeng sa ho se senyehe le ho se tsofale.

3. Baemeli ba ho Qetella Masela

• Karolo ea DAAM:E fana ka liphetho tse tšoarellang tsa khatiso le thepa ea ho thibela makukuno.
• Mohlala:Sebelisa lipheletsong tse seng tsa tšepe bakeng sa masela.

4. Li-hydrogel le Litšebeliso tsa Biomedical

• Karolo ea DAAM:E kenya letsoho ho thehoeng ha li-hydrogel tse lumellanang le 'mele.
• Mohlala:Mekhoa e laoloang ea ho fana ka lithethefatsi.

5. Pampiri le Sephutheloana

• Karolo ea DAAM:E fana ka matla a ntlafetseng le thepa ea thibelo ea mongobo.
• Mohlala:Liaparo tse khethehileng tsa pampiri bakeng sa ho paka lijo le lino.

6. Litiiso

• Karolo ea DAAM:E ntlafatsa ho tenyetseha le ho hanyetsa ho petsoha tlas'a khatello.
• Mohlala:Li-sealant tse fetotsoeng ka silicone bakeng sa lits'ebetso tsa kaho le tsa likoloi.

Melemo ea ho Sebelisa DAAM

1. Bokhoni ba ho Kopanya Dikarolo ka Mekgwa e Mengata:E theha marangrang a matla ka lihokelo tse kopanyang tse thehiloeng ho hydrazide joalo ka ADH.
2. Ho Tsitsisa ha Thermal:E netefatsa botšepehi tlas'a maemo a mocheso o phahameng.
3. Khanyetso ea Mongobo:E etsa lifilimi le meaho e thibelang metsi.
4. Chefo e Tlase:Ho bolokehile ho e sebelisa ha ho bapisoa le li-monomer tse ling tse fapaneng.
5. Ho lumellana ho pharaletseng:E sebetsa ka mekhoa e fapaneng ea polymerization, ho kenyeletsoa emulsion, suspension le mekhoa ea tharollo.

Ho lumellana le Adipic Dihydrazide (ADH)

Motsoako oa DAAM le ADH o sebelisoa haholo lits'ebetsong tsa polymer tse hokahaneng ka ho fapana. Karabelo pakeng tsa sehlopha sa ketone sa DAAM le sehlopha sa hydrazide ho ADH e fella ka khokahano e tšoarellang haholo ea hydrazone, e nolofalletsang:

• Matla a ntlafalitsoeng a mechini.
• Khanyetso e phahameng ea mocheso.
• Ho feto-fetoha ho ipapisitse le litlhoko tsa tlhahiso.

Mokhoa oa Karabelo:

1. Tšebelisano ea Ketone-Hydrazide:DAAM + ADH → Hydrazone Bond
2. Likopo:Liaparo tsa polyurethane tse tsamaisoang ke metsi, thepa e ipholisang, le tse ling.

Temoho le Mekhoa ea 'Maraka

Tlhoko ea Lefatše

Mmaraka oa DAAM o bone kholo e kholo ka lebaka la ts'ebeliso ea eona e ntseng e eketseha mefuteng e sireletsang tikoloho, e tsamaisoang ke metsi le litsamaiso tse tsoetseng pele tsa polymer. Liindasteri tse kang tsa likoloi, tsa kaho le tsa elektroniki li tsamaisa tlhoko ea litharollo tse thehiloeng ho DAAM.

Boiqapelo

Lintlafatso tsa morao tjena li shebane le:

1. Mekhoa e meng e thehiloeng ho Bio:Ho kopanngoa ha DAAM ho tsoa mehloling e nchafatsoang.
2. Liaparo tse Phahameng tsa Ts'ebetso:Ho kopanngoa ha litsamaiso tsa nanocomposite bakeng sa thepa e ntlafalitsoeng ea bokaholimo.
3. Sephutheloana se Tsitsitseng:Sebelisa metswakong ea polymer e bolang.

Ho Sebetsana le ho Boloka

• Litlhokomelo tsa polokeho:Qoba ho hema kapa ho kopana le letlalo; sebelisa lisebelisoa tse loketseng tsa tšireletso ea botho (PPE).
• Maemo a Polokelo:Boloka sebakeng se pholileng, se omileng, le se nang le moea o kenang hantle; qoba ho pepesehela mongobo le mocheso.
• Bophelo ba Shelofo:Hangata e tsitsitse ho fihlela likhoeling tse 24 tlas'a maemo a khothaletsoang.

Diacetone Acrylamide (DAAM) ke monomer ea bohlokoa saenseng ea thepa ea sejoale-joale, e fanang ka thepa e ikhethang e etsang hore e be ea bohlokoa lits'ebetsong tse sebetsang hantle. Ho tloha bokhoning ba eona ba ho hokahanya ho ea ho mefuta e mengata ea ts'ebeliso, DAAM e ntse e tsoela pele ho bapala karolo ea bohlokoa ho ntlafatseng likhomaretsi, liphahlo le li-polymer. Ho tsamaellana ha eona le mahlale a ntseng a hlaha a tsitsitseng ho e beha e le karolo ea bohlokoa boqaping ba nakong e tlang.