Ethylene Glycol Antimony

Ethylene Glycol Antimony / Antimony Triglycolate – Thepa ea Fisicochemical

Tlhaloso ea Khoebo bakeng sa Ethylene Glycol Antimony

Sephutheloana: Mekotla e kopantsoeng ea aluminium-polasetiki e pakiloe ka vacuum. Mokotla o mong le o mong o boima ba lik'hilograma tse 15 kapa 25 'me o pakiloe ka pallet e le' ngoe ka tonne.

Libaka tsa ts'ebeliso le ts'ebeliso e khethehileng ea antimony glycol ke life?

I. Libaka tse ka Sehloohong tsa Kopo

Antimony glycolate ke sesebelisoa se sebetsang hantle haholo, se hloekileng haholo, se sebelisoang haholo indastering ea polyester, haholo-holo lits'ebetsong tsa polycondensation tse qhibilihang tse sebelisang terephthalic acid (PTA) le ethylene glycol (EG) e le thepa e tala. Ka ho khetheha, e akaretsa makala a latelang a manyenyane:

1. Tlhahiso ea resin ea polyester (PET)
- Li-chips tsa polyester tsa boleng ba faeba (bakeng sa faeba e tloaelehileng ea polyester le filament)
- Li-chips tsa polyester tsa boleng ba botlolo (bakeng sa metsi a nooang, lino tse nang le khabone, libotlolo tse tlatsang metsi a chesang, jj.)
- Li-chips tsa polyester tsa boemo ba filimi (bakeng sa lifilimi tsa optical, lifilimi tsa motlakase tse sireletsang mocheso, le lifilimi tsa ho paka)

2. Li-polyester le li-copolyester tse fetotsoeng
- Polyester e nang le diethylene glycol (DEG) e tlase
- Polyester e daehang ea Cationic (CDP)
- Sistimi ea ho kenya tšebetsong karolo ea polybutylene terephthalate (PBT) (e hloka mokhoa oa ho e lokisa)

3. Ts'ebetso ea ho Ntlafatsa ho Sebelisa Hape Polyester le ho Ntlafatsa Viscosity
- Ho qhibilihisa le ho teteana ha thepa ea PET e senyehileng (mokhahlelo oa pele ho kalafo ea SSP)
- Katalysis e sebetsang hantle haholo ea polycondensation ea polyester e sebelisitsoeng hape (r-PET)

II. Litšebeliso tse Ikhethang le Melemo ea Tekheniki

Antimony glycolate e nkela di-catalyst tsa setso sebaka (tse kang antimony trioxide le antimony acetate) dikarabelong tsa polyester polycondensation, mme ditshebediso tsa yona tse ikgethang le ntlafatso ya tshebetso ke tse latelang:

1. Karabelo e sebetsang hantle haholo ea ho kopanya lintho tse nang le lik'hemik'hale, e eketsa bokhoni ba tlhahiso.
- Ditshebediso: Jwalo ka ntho e ka sehloohong e thusang ho hola, e potlakisa mohato wa ho kolla ha metsi ka bongata kamora ho fetoha ha ester kapa ho fetoha ha ester ka kotloloho, e eketsa sekgahla sa ho fetoha ha polymer haholo.
- Litlamorao: Ka tekanyo e lekanang ea antimony, nako ea karabelo e khutsufatsoa ka 10%–15%; kapa ka nako e tšoanang, tekanyo ea polymerization (DP) le viscosity ea intrinsic (IV) li phahame, 'me chai ea sebaka sa yuniti e ntlafala.

2. Fokotsa bongata ba antimony bo setseng sehlahisoa se felileng ho fihlela litlhoko tse tala le tsa ts'ireletso ea tikoloho.
- Ditshebediso: Ka lebaka la bokgoni ba yona bo hodimo ba ho kenya di-catalyst, tjhelete e hlokahalang ho eketswa ke 60%–70% feela ya di-catalyst tsa setso (tse thehilweng hodima karolo ya antimony).
- Liphetho: Sekhahla sa Sb se setseng ka har'a li-chips tsa PET se ka laoloa ka mokhoa o tsitsitseng ho ≤150 ppm, 'me li-chips tse ling tsa botlolo tse phahameng li ka ba tlase ho ≤100 ppm, e leng tlase haholo ho feta 200–250 ppm ea sistimi ea antimony acetate, e fihlelang lithibelo tsa ho falla ha thepa ea ho kopana le lijo e behiloeng ke EU, US FDA le balaoli ba bang.

3. Ntlafatsa 'mala le thepa ea optical ea lihlahisoa tsa polyester
- Ditshebediso: Antimony glycol e qhibilihisoa ka botlalo mme e hasanngwa ka ho lekana tsamaisong ya karabelo, ho qoba ho kenngwa ha catalysis ya sebakeng seo kapa ho kopana ha tshepe.
- Liphetho: Boleng ba b (letšoao la bosehla) ba li-chip tsa PET tse hlahisitsoeng bo fokotsehile ka li-unit tse 1-2 ha li bapisoa le sistimi ea antimony trioxide, ha boleng ba L (khanya) bo ntlafalitsoe, e leng se etsang hore li lokele tlhahiso ea lifilimi tsa optical le likhoele tse khanyang haholo.

4. Fokotsa likarabelo tse mpe le ho ntlafatsa matšoao a boleng ba sehlahisoa.
- Ditshebediso: Fokotsa dikarabelo tse mpe tse kang etherification ya ethylene glycol le ho thibela ho thehwa ha diethylene glycol (DEG).
- Litlamorao: Dikahare tsa DEG ho PET di ka laolwa ho ≤0.8% (ha di bapiswa le hoo e ka bang 1.0%–1.2% ditsamaisong tse tlwaelehileng), ho ntlafatsa ntlha ya ho qhibiliha le botsitso ba mocheso, le ho ntlafatsa tshebetso ya ho potoloha le ho bopa ka ho phatloha.

5. Ntlafatsa bokgoni ba ho potoloha ka mora ho sebetsa ho fokotsa sekgahla sa ho robeha.
- Ditshebediso: Masalla a catalytic a lekana mme a manyane haholo ka boholo ba dikarolwana (ha ho na ntho e leketlileng kamora ho qhibiliha), mme ha a kwale sekirini sa sefe sa kopano ya ho phunya.
- Litlamorao: Sekhahla sa ho robeha ha filament ea polyester se fokotsehile ka ho feta 30%, matla a faeba le ho lekana ha bolelele lia ntlafala, 'me sekhahla sa lihlahisoa tse ntle se ka fihla ho 100%.

6. Ho bonolo ho e sebelisa le ho ikamahanya le maemo ha sesebelisoa
- Ditshebediso: E ka qhibilihiswa ka ho toba ka hara ethylene glycol ho lokisa tharollo ya catalyst e tshwanang (maikutlo a 2%–5%), e nolofalletsang ho lekanya le ho fepa ka ho tswelang pele le ka nepo.
- Litlamorao: E qoba kotsi ea pula e bakoang ke hydrolysis ea antimony acetate, hape e felisa tlhoko ea ts'ebetso ea ho sila le ho hasanya antimony trioxide, e leng se etsang hore e lokele limela tse kholo tsa polyester tse tsoelang pele (tlhahiso ea letsatsi le letsatsi ea mola o le mong oa lithane tse makholo kapa ho feta).

III. Lintlha tse Tlatsetsang (Likhothaletso tsa Khetho)

Ha ho bapisoa le antimony acetate, antimony glycol e na le botsitso bo phahameng ba mocheso 'me ha e na tšekamelo ea ho senyeha kapa ho bola ha mocheso oa polycondensation ka holimo ho 300°C, kahoo e fokotsa ho kenngoa ha antimony liphaepheng tsa vacuum.
- Ha e bapisoa le antimony trioxide: Antimony glycol e na le ho qhibiliha ha >10% (karoloana ea boima, 80℃) ho ethylene glycol, ha antimony trioxide e na le ho qhibiliha ha ka tlase ho 0.1%, kahoo ho qhalana ha eona le ts'ebetso ea pele li betere haholo ho feta tsa morao-rao.
- Meeli ea ts'ebeliso: Ha e ea lokela litsamaiso tse se nang antimony (joalo ka libotlolo tse ling tse tlatsang ka mocheso le liphutheloana tsa bongaka), empa e ka sebelisoa e le tharollo ea phetoho phetohong ea antimony.