Ethylene Glycol Antimony

Ethylene Glycol Antimony / Antimony Triglycolate - Cov Khoom Siv Physicochemical

Cov Lus Qhia Txog Kev Lag Luam rau Ethylene Glycol Antimony

Pob Khoom: Cov hnab yas sib xyaw ua ke yog ntim hauv lub tshuab nqus tsev. Txhua lub hnab hnyav 15 lossis 25 kilograms thiab ntim rau hauv ib lub pallet rau ib tuj.

Cov cheeb tsam siv thiab kev siv tshwj xeeb ntawm antimony glycol yog dab tsi?

I. Cov Cheeb Tsam Tseem Ceeb rau Kev Siv

Antimony glycolate yog ib qho tshuaj catalyst polycondensation uas ua haujlwm tau zoo heev, muaj kev ntshiab siab, thiab yog siv rau hauv kev lag luam polyester, tshwj xeeb tshaj yog hauv cov txheej txheem yaj polycondensation siv terephthalic acid (PTA) thiab ethylene glycol (EG) ua cov khoom siv raw. Tshwj xeeb, nws suav nrog cov sub-sectors hauv qab no:

1. Kev tsim cov khoom siv polyester (PET)
- Cov khoom siv polyester fiber ntau (rau polyester staple fiber thiab filament)
- Cov khoom siv polyester uas ua los ntawm lub raj mis (rau dej haus, dej haus uas muaj pa roj carbonated, lub raj mis uas ntim kub, thiab lwm yam)
- Cov khoom siv polyester uas ua los ntawm zaj duab xis (rau cov zaj duab xis kho qhov muag, cov zaj duab xis rwb thaiv hluav taws xob, thiab cov zaj duab xis ntim khoom)

2. Cov polyesters thiab copolyesters hloov kho
- Cov diethylene glycol tsawg (DEG) cov ntsiab lus polyester
- Cationic dyeable polyester (CDP)
- Ib feem catalytic system ntawm polybutylene terephthalate (PBT) (yuav tsum tau formulation)

3. Kev Siv Polyester Rov Qab Thiab Cov Txheej Txheem Txhim Kho Viscosity
- Yaj thiab ua kom cov khoom pov tseg PET tuab (SSP pretreatment theem)
- Kev ua haujlwm zoo heev ntawm cov tshuaj polycondensation ntawm cov polyester rov ua dua tshiab (r-PET)

II. Cov Kev Siv Tshwj Xeeb thiab Cov Txiaj Ntsig Txog Kev Siv Tshuab

Antimony glycolate hloov cov tshuaj catalysts ib txwm muaj (xws li antimony trioxide thiab antimony acetate) hauv cov tshuaj polyester polycondensation, thiab nws cov ntawv thov tshwj xeeb thiab kev txhim kho kev ua tau zoo yog raws li nram no:

1. Cov tshuaj tiv thaiv catalytic polycondensation zoo heev, ua rau muaj peev xwm ntau lawm.
- Daim Ntawv Thov: Ua ib qho catalyst tseem ceeb, nws ua kom cov theem polycondensation sai dua tom qab transesterification lossis esterification ncaj qha, ua rau kom tus nqi polymerization nce ntxiv.
- Cov teebmeem: Nrog tib tus nqi ntawm antimony, lub sijhawm ua haujlwm luv dua 10% -15%; lossis tib lub sijhawm, qib ntawm polymerization (DP) thiab intrinsic viscosity (IV) siab dua, thiab qhov chaw tso zis ntawm chav tsev tau zoo dua.

2. Txo cov tshuaj antimony seem hauv cov khoom tiav lawm kom ua tau raws li cov kev cai ntsuab thiab kev tiv thaiv ib puag ncig.
- Daim Ntawv Thov: Vim nws muaj zog ua haujlwm catalytic siab, qhov ntau uas yuav tsum tau ntxiv tsuas yog 60% -70% ntawm cov catalysts ib txwm muaj (raws li cov khoom antimony).
- Cov Txiaj Ntsig: Cov ntsiab lus Sb seem hauv cov PET chips tuaj yeem tswj tau ruaj khov ntawm ≤150 ppm, thiab qee cov chips fwj siab tuaj yeem qis li ≤100 ppm, uas qis dua 200–250 ppm ntawm antimony acetate system, ua tau raws li cov kev txwv ntawm kev tsiv teb tsaws chaw ntawm cov khoom siv sib cuag zaub mov uas EU, US FDA thiab lwm cov tub ceev xwm tau tsim.

3. Txhim kho cov xim thiab cov khoom siv kho qhov muag ntawm cov khoom polyester
- Cov Ntawv Thov: Antimony glycol yaj tag thiab sib xyaw ua ke hauv cov tshuaj tiv thaiv, zam kev ua haujlwm ntau dhau lossis kev sib sau ua ke ntawm cov hlau.
- Cov Txiaj Ntsig: Tus nqi b (qhov ntsuas daj) ntawm cov PET chips tsim tawm tau txo qis los ntawm 1-2 units piv rau lub kaw lus antimony trioxide, thaum tus nqi L (qhov ci) tau zoo dua, ua rau lawv tsim nyog dua rau kev tsim cov yeeb yaj kiab kho qhov muag thiab cov fibers ci ntsa iab heev.

4. Txo cov kev tsis haum tshuaj thiab txhim kho cov cim qhia zoo ntawm cov khoom.
- Daim Ntawv Thov: Txo cov tshuaj tiv thaiv sab xws li ethylene glycol etherification thiab inhibit qhov tsim ntawm diethylene glycol (DEG).
- Cov Nyhuv: Cov ntsiab lus DEG hauv PET tuaj yeem tswj tau ntawm ≤0.8% (piv rau kwv yees li 1.0% -1.2% hauv cov txheej txheem ib txwm muaj), txhim kho qhov chaw yaj thiab kev ruaj khov thermal, thiab txhim kho kev ua haujlwm ntawm kev sib hloov thiab kev ua haujlwm ntawm lub tshuab pwm.

5. Txhim kho qhov kev sib hloov tom qab ua tiav kom txo qhov kev tawg.
- Daim Ntawv Thov: Cov khoom seem catalytic yog sib xws thiab zoo heev hauv qhov loj me me (tsis muaj cov khoom dai tom qab yaj), thiab tsis txhaws lub lim dej ntawm lub rooj sib dhos.
- Cov teebmeem: Polyester filament spinning breakage rate txo qis ntau dua 30%, lub zog fiber thiab elongation uniformity tau zoo dua, thiab tus nqi ntawm cov khoom zoo dua tuaj yeem ncav cuag 100%.

6. Yooj yim siv thiab hloov kho tau yooj yim
- Daim Ntawv Thov: Nws tuaj yeem yaj ncaj qha rau hauv ethylene glycol los npaj cov tshuaj catalyst homogeneous (concentration 2% -5%), ua rau kev ntsuas thiab pub mis tas mus li thiab meej.
- Cov Nyhuv: Tiv thaiv kev pheej hmoo ntawm cov nag los ntawm antimony acetate hydrolysis, thiab tseem tshem tawm qhov xav tau antimony trioxide sib tsoo thiab cov txheej txheem dispersion, ua rau nws haum rau cov nroj tsuag polyester txuas ntxiv mus (ib kab txhua hnub tso zis ntawm ntau pua tons lossis ntau dua).

III. Cov Lus Qhia Ntxiv (Cov Lus Qhia Xaiv)

Piv rau antimony acetate, antimony glycol muaj kev ruaj khov thermal ntau dua thiab tsis tshua muaj kev sublimation lossis decomposition ntawm polycondensation kub siab tshaj 300 ° C, yog li txo cov antimony deposition hauv cov kav dej nqus tsev.
- Piv nrog antimony trioxide: Antimony glycol muaj solubility ntawm >10% (pawg feem, 80 ℃) hauv ethylene glycol, thaum antimony trioxide muaj solubility tsawg dua 0.1%, yog li nws cov dispersibility thiab kev ua haujlwm pib zoo dua li qhov kawg.
- Cov kev txwv ntawm kev siv: Tsis haum rau cov tshuab tsis muaj antimony (xws li qee lub raj mis kub thiab cov ntim khoom kho mob), tab sis tuaj yeem siv ua kev daws teeb meem hloov pauv hauv kev hloov pauv antimony-reduction.