I-Ethylene Glycol Antimony

I-Ethylene Glycol I-Antimony / I-Antimony I-Triglycolate – Izakhiwo Ze-Physicochemical

Ukucaciswa Kwebhizinisi kwe-Ethylene Glycol Antimony

Iphakheji: Izikhwama ze-aluminium-plastic ezihlanganisiwe zipakishwa nge-vacuum. Isikhwama ngasinye sinesisindo esingamakhilogremu angu-15 noma angu-25 futhi sipakishwa ngephalethi elilodwa ngethani.

Yiziphi izindawo zokusetshenziswa kanye nokusetshenziswa okukhethekile kwe-antimony glycol?

I. Izindawo Eziyinhloko Zokusebenza

I-Antimony glycolate iyisikhuthazi se-polycondensation se-organometallic esisebenza kahle kakhulu, esihlanzekile kakhulu, esisetshenziswa kakhulu embonini ye-polyester, ikakhulukazi ezinqubweni ze-polycondensation ezincibilikisiwe kusetshenziswa i-terephthalic acid (PTA) kanye ne-ethylene glycol (EG) njengezinto zokusetshenziswa. Ngokukhethekile, ihlanganisa lezi zingxenye ezilandelayo:

1. Ukukhiqizwa kwe-polyester resin (PET)
- Ama-polyester chips e-fiber-grade (e-polyester staple fiber kanye ne-filament)
- Ama-chips e-polyester asezingeni lebhodlela (amanzi okuphuza, iziphuzo ezine-carbonated, amabhodlela agcwele amanzi ashisayo, njll.)
- Ama-polyester chips asezingeni lefilimu (amafilimu okukhanya, amafilimu okushisa kagesi, namafilimu okupakisha)

2. Ama-polyester nama-copolyester aguquliwe
- I-polyester ephansi ye-diethylene glycol (DEG)
- I-polyester edayiwayo ye-Cationic (CDP)
- Uhlelo lokuvuselela oluyingxenye lwe-polybutylene terephthalate (PBT) (ludinga ukwakheka)

3. Inqubo Yokuvuselela I-Polyester Nokuthuthukisa Ukuqina
- Ukuncibilika nokuqina kwezinto ezilahliwe ze-PET (isigaba sokwelashwa kwangaphambili se-SSP)
- I-catalysis esebenza kahle kakhulu ye-polycondensation ye-polyester ephinde yasetshenziswa (r-PET)

II. Izicelo Ezithile kanye Nezinzuzo Zobuchwepheshe

I-Antimony glycolate ithatha indawo yama-catalyst endabuko (njenge-antimony trioxide kanye ne-antimony acetate) ekuphenduleni kwe-polyester polycondensation, futhi ukusetshenziswa kwayo okukhethekile kanye nokuthuthukiswa kokusebenza kungokulandelayo:

1. Ukusabela kwe-catalytic polycondensation okuphumelelayo kakhulu, okwandisa amandla okukhiqiza.
- Izicelo: Njengesikhuthazi esiyinhloko, isheshisa isigaba se-polycondensation ngemuva kokuguqulwa kwe-transesterification noma ukwakheka kwe-esterification okuqondile, okwandisa kakhulu izinga le-polymerization.
- Imiphumela: Ngenani elifanayo le-antimony, isikhathi sokuphendula sifinyezwa ngo-10%–15%; noma ngaphakathi kwesikhathi esifanayo, izinga le-polymerization (DP) kanye ne-intrinsic viscosity (IV) liphezulu, futhi isivuno sesikhala seyunithi siyathuthuka.

2. Nciphisa okuqukethwe kwe-antimony okusele kumkhiqizo oqediwe ukuze kuhlangatshezwane nezidingo eziluhlaza nezokuvikela imvelo.
- Ukusetshenziswa: Ngenxa yokusebenza kwayo okuphezulu kwe-catalytic, inani elidingekayo ukuze lingezwe lingu-60%–70% kuphela we-catalysts yendabuko (ngokusekelwe ku-antimony element).
- Imiphumela: Okuqukethwe kwe-Sb okusele kuma-PET chips kungalawulwa ngokuzinzile ku-≤150 ppm, kanti amanye ama-bottle chips aphezulu angaba ngaphansi ku-≤100 ppm, okuphansi kakhulu kune-200–250 ppm yohlelo lwe-antimony acetate, okuhlangabezana nemikhawulo yokufuduka kwezinto zokuxhumana zokudla ezibekwe yi-EU, i-US FDA kanye nezinye iziphathimandla.

3. Thuthukisa umbala kanye nezakhiwo ezibonakalayo zemikhiqizo ye-polyester
- Ukusetshenziswa: I-Antimony glycol incibilika ngokuphelele futhi ihlakazeke ngokulinganayo ohlelweni lokusabela, igwema ukuhlanganiswa kwe-local-catalysis noma i-metal.
- Imiphumela: Inani le-b (inkomba yobuphuzi) lama-PET chips akhiqizwayo lincishiswe ngamayunithi angu-1-2 uma kuqhathaniswa nohlelo lwe-antimony trioxide, kuyilapho inani le-L (ukukhanya) lithuthukiswa, okwenza afaneleke kakhulu ekukhiqizweni kwamafilimu optical kanye nemicu ekhanyayo kakhulu.

4. Nciphisa ukusabela okungekuhle futhi uthuthukise izinkomba zekhwalithi yomkhiqizo.
- Ukusetshenziswa: Nciphisa ukusabela okungekuhle njenge-ethylene glycol etherification futhi kuvimbele ukwakheka kwe-diethylene glycol (DEG).
- Imiphumela: Okuqukethwe kwe-DEG ku-PET kungalawulwa ku-≤0.8% (uma kuqhathaniswa cishe no-1.0%–1.2% ezinhlelweni ezivamile), ukuthuthukisa iphuzu lokuncibilika kanye nokuqina kokushisa, kanye nokuthuthukisa ukusebenza kokuphotha kanye nokubumba okuhambayo.

5. Lungiselela ukuguquguquka ngemva kokucubungula ukuze unciphise izinga lokuphuka.
- Izicelo: I-catalytic residue iyafana futhi incane kakhulu ngobukhulu bezinhlayiya (ayikho into elengayo ngemva kokuncibilika), futhi ayivali isikrini sesihlungi senhlangano yokuphotha.
- Imiphumela: Izinga lokuphuka kokujikeleza kwe-polyester filament lincishisiwe ngaphezu kuka-30%, amandla e-fiber kanye nokufana kobude kuyathuthukiswa, futhi izinga lemikhiqizo ephezulu lingafinyelela ku-100%.

6. Kulula ukuyisebenzisa kanye nokuzivumelanisa nezimo kwedivayisi
- Ukusetshenziswa: Ingancibilikiswa ngqo ku-ethylene glycol ukuze kulungiselelwe isixazululo se-catalyst esifanayo (ukugxila okungu-2%–5%), okuvumela ukulinganisa nokudla okuqhubekayo nokunembile.
- Imiphumela: Igwema ingozi yemvula ebangelwa yi-antimony acetate hydrolysis, futhi iqeda nesidingo senqubo yokugaya nokusabalalisa i-antimony trioxide, okwenza ifanele izitshalo ezinkulu ze-polyester eziqhubekayo (umkhiqizo wansuku zonke wamakhulu amathani noma ngaphezulu).

III. Amanothi Engeziwe (Izincomo Zokukhetha)

Uma kuqhathaniswa ne-antimony acetate, i-antimony glycol inokuqina okuphezulu kokushisa futhi ayithambekeli kakhulu ekuqhekekeni noma ekuqhekekeni emazingeni okushisa e-polycondensation angaphezu kuka-300°C, ngaleyo ndlela kunciphisa ukufakwa kwe-antimony kumapayipi e-vacuum.
- Uma kuqhathaniswa ne-antimony trioxide: I-Antimony glycol inokuncibilika okungu->10% (ingxenye yobuningi, 80℃) ku-ethylene glycol, kuyilapho i-antimony trioxide inokuncibilika okungaphansi kuka-0.1%, ngakho-ke ukuhlakazeka kwayo kanye nomsebenzi wokuqala kungcono kakhulu kunokwakamuva.
- Imikhawulo yokusetshenziswa: Ayifanele izinhlelo ezingenayo i-antimony (njengamabhodlela athile okugcwalisa okushisayo kanye nokupakishwa kwezokwelapha), kodwa ingasetshenziswa njengesixazululo sesikhashana ekuguqulweni kokunciphisa i-antimony.