I-Ethylene Glycol Antimony

I-Ethylene Glycol I-Antimony / I-Antimony I-Triglycolate – Iipropati zeFizikokhemikhali

Iinkcukacha zeShishini ze-Ethylene Glycol Antimony

Iphakheji: Iingxowa zeplastiki ezidityanisiweyo ze-aluminium zipakishwa nge-vacuum. Ingxowa nganye inobunzima obuziikhilogram ezili-15 okanye ezingama-25 kwaye ipakishwa kwipalethi enye ngetoni nganye.

Ziziphi iindawo ezisetyenziswayo kunye nokusetyenziswa okukhethekileyo kwe-antimony glycol?

I. Iindawo eziphambili zokusetyenziswa

I-Antimony glycolate sisixhobo esisebenza kakuhle kakhulu, esicocekileyo kakhulu, esisebenza kakuhle kwi-organometallic polycondensation catalyst, esisetyenziswa kakhulu kwishishini le-polyester, ingakumbi kwiinkqubo ze-melt polycondensation kusetyenziswa i-terephthalic acid (PTA) kunye ne-ethylene glycol (EG) njengezinto eziluhlaza. Ngokukodwa, igubungela la macandelo alandelayo:

1. Imveliso ye-polyester resin (PET)
- Iitships zepolyester ezikumgangatho wefayibha (zefayibha ye-polyester staple kunye ne-filament)
- Iitships zepolyester ezikumgangatho webhotile (zamanzi okusela, iziselo ezinekhabhoni, iibhotile ezizaliswe ngamanzi ashushu, njl.njl.)
- Iitships zepolyester ezikumgangatho wefilimu (zeefilimu ze-optical, iifilimu zokufaka ubushushu bombane, kunye neefilimu zokupakisha)

2. Iipolyester eziguquliweyo kunye neecopolyester
- I-polyester enomxholo ophantsi we-diethylene glycol (DEG)
- I-Cationic dyeable polyester (CDP)
- Inkqubo yokucombulula inxalenye ye-polybutylene terephthalate (PBT) (ifuna ukwenziwa)

3. Inkqubo yokuphucula ukuHlaziya iPolyester kunye nokuQinisa ukuKhanya
- Ukunyibilika kunye nokuqina kwezinto zePET ezilahliweyo (inqanaba lonyango lwangaphambi kwe-SSP)
- I-catalysis esebenza kakuhle kakhulu ye-polycondensation ye-polyester esetyenzisiweyo (r-PET)

II. Izicelo ezithile kunye neeNzuzo zobugcisa

I-Antimony glycolate ithatha indawo yee-catalysts zemveli (ezifana ne-antimony trioxide kunye ne-antimony acetate) kwi-polycondensation reactions ye-polyester, kwaye ukusetyenziswa kwayo kunye nokuphuculwa kokusebenza kulandelayo:

1. I-catalytic polycondensation reaction esebenza kakuhle kakhulu, inyusa amandla emveliso.
- Ukusetyenziswa: Njengesixhobo esiphambili sokuvuselela, ikhawulezisa isigaba se-polycondensation emva kokuguqulwa kwe-transesterification okanye ukwenziwa kwe-esterification ngqo, inyusa kakhulu izinga le-polymerization.
- Iziphumo: Ngomlinganiselo ofanayo we-antimony, ixesha lokuphendula lifinyezwa yi-10%–15%; okanye ngaphakathi kwexesha elifanayo, inqanaba le-polymerization (DP) kunye ne-intrinsic viscosity (IV) ziphezulu, kwaye isivuno sesithuba seyunithi siyaphucuka.

2. Nciphisa umxholo we-antimony oseleyo kwimveliso egqityiweyo ukuze kuhlangatyezwane neemfuno zokhuseleko oluluhlaza nolwendalo.
- Ukusetyenziswa: Ngenxa yokusebenza kwayo okuphezulu kwe-catalytic, isixa esifunekayo ukuze kongezwe yi-60%–70% kuphela ye-catalysts zemveli (ezisekelwe kwi-antimony element).
- Iziphumo: Umxholo we-Sb oseleyo kwiitships zePET unokulawulwa ngokuzinzileyo kwi-≤150 ppm, kwaye ezinye iitships zeebhotile eziphezulu zinokuba phantsi njenge-≤100 ppm, ephantsi kakhulu kune-200–250 ppm yenkqubo ye-antimony acetate, ukuhlangabezana nemiqathango yokufuduka kwezinto zokunxibelelana kokutya ezibekwe yi-EU, i-US FDA kunye nezinye iigunya.

3. Phucula umbala kunye neempawu ezibonakalayo zeemveliso ze-polyester
- Ukusetyenziswa: I-Antimony glycol iyanyibilika ngokupheleleyo kwaye isasazeke ngokulinganayo kwinkqubo yokusabela, ithintela i-local-catalysis okanye i-metal aggregation.
- Iziphumo: Ixabiso le-b (isalathisi sobutyheli) leetships zePET eziveliswayo lincitshiswa ngeeyunithi ezi-1-2 xa kuthelekiswa nenkqubo ye-antimony trioxide, ngelixa ixabiso le-L (ukukhanya) liphucukile, nto leyo eyenza ukuba zifaneleke ngakumbi kwimveliso yeefilimu ze-optical kunye neefayibha ezikhanyayo kakhulu.

4. Nciphisa iimpembelelo ezingalindelekanga kwaye uphucule izalathisi zomgangatho wemveliso.
- Ukusetyenziswa: Nciphisa iimpembelelo ezingalindelekanga ezifana ne-ethylene glycol etherification kwaye uthintele ukwakheka kwe-diethylene glycol (DEG).
- Iziphumo: Umxholo we-DEG kwi-PET unokulawulwa kwi-≤0.8% (xa kuthelekiswa ne-1.0%–1.2% kwiinkqubo eziqhelekileyo), ukuphucula indawo yokunyibilika kunye nokuzinza kobushushu, kunye nokuphucula ukusebenza kokujikeleza okusezantsi kunye nokubumba okuvuthuzayo.

5. Lungiselela ukujikeleza emva kokucubungula ukuze kuncitshiswe izinga lokuqhekeka.
- Ukusetyenziswa: Intsalela ye-catalytic iyafana kwaye incinci kakhulu ngobukhulu bamasuntswana (akukho nto ixhonyiweyo emva kokunyibilika), kwaye ayivali isikrini sesihluzo sendibano yokujikelezisa.
- Iziphumo: Izinga lokuqhekeka kwe-polyester filament lincitshisiwe ngaphezulu kwe-30%, amandla efayibha kunye nokufana kobude kuyaphucuka, kwaye izinga leemveliso ezigqwesileyo linokufikelela kwi-100%.

6. Ukulula kokusetyenziswa kunye nokuguquguquka kwesixhobo
- Ukusetyenziswa: Inganyibilikiswa ngqo kwi-ethylene glycol ukulungiselela isisombululo se-catalyst esifanayo (uxinzelelo lwe-2%–5%), okuvumela ukulinganisa kunye nokondla okuqhubekayo nokuchanekileyo.
- Iziphumo: Iphepha umngcipheko wokuna kwemvula okubangelwa yi-antimony acetate hydrolysis, kwaye ikwasusa nesidingo senkqubo yokugaya kunye nokusasazwa kwe-antimony trioxide, okwenza ifaneleke kwizityalo ezinkulu ze-polyester eziqhubekayo (ukuphuma komgca omnye wemihla ngemihla kwamakhulu eetoni okanye ngaphezulu).

III. Amanqaku Ongezelelweyo (Iingcebiso Zokukhetha)

Xa kuthelekiswa ne-antimony acetate, i-antimony glycol inozinzo oluphezulu lobushushu kwaye ayithambekeli kakhulu kwi-sublimation okanye ekuboleni kumaqondo obushushu e-polycondensation angaphezu kwama-300°C, ngaloo ndlela inciphisa ukufakwa kwe-antimony kwimibhobho ye-vacuum.
- Xa kuthelekiswa ne-antimony trioxide: I-Antimony glycol inokunyibilika kwe->10% (inxalenye yobunzima, i-80℃) kwi-ethylene glycol, ngelixa i-antimony trioxide inokunyibilika okungaphantsi kwe-0.1%, ngoko ke ukusasazeka kwayo kunye nomsebenzi wokuqala kungcono kakhulu kuneyokugqibela.
- Imida yokusetyenziswa: Ayifanelekanga kwiinkqubo ezingenayo i-antimony (ezifana neebhotile ezizalisa ngobushushu kunye nokupakishwa kwezonyango), kodwa ingasetyenziswa njengesisombululo sokutshintsha ekuguquleni i-antimony-reduction.