Ethylene Glycol Antimony

Ethylene Glycol Antimony / Antimony Triglycolate – Hunhu hweFizikokemikari

Tsanangudzo yeBhizinesi yeEthylene Glycol Antimony

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Ndedzipi nzvimbo dzinoshandiswa uye mashandisirwo chaiwo eantimony glycol?

I. Nzvimbo Huru dzeKushandisa

Antimony glycolate chinhu chinoshanda zvakanyanya, chakachena zvakanyanya, uye chinoshandiswa zvakanyanya muindasitiri yepolyester, kunyanya mukuita kwepolycondensation inonyunguduka uchishandisa terephthalic acid (PTA) uye ethylene glycol (EG) sezvinhu zvakagadziriswa. Zvikuru, inosanganisira zvikamu zvinotevera:

1. Kugadzirwa kwepolyester resin (PET)
- Machipisi epolyester emhando yefiber (e polyester staple fiber ne filament)
- Machipisi epolyester emhando yepamusoro (emvura yekunwa, zvinwiwa zvine carbonated, mabhodhoro anozadza zvinopisa, nezvimwewo)
- Machipisi epolyester emhando yepamusoro (emafirimu ekuona, mafirimu emagetsi anoputira, uye mafirimu ekurongedza)

2. Mapolyester nemacopolyester akagadziriswa
- Polyester ine diethylene glycol (DEG) yakaderera
- Polyester inodhayiwa neCationic (CDP)
- Chikamu chekugadzirisa chepolybutylene terephthalate (PBT) (chinoda kuumbwa)

3. Maitiro Ekuvandudza Kudzokorodza kwePolyester uye Kusimbaradza
- Kunyunguduka nekukora kwemarara ePET zvinhu (SSP pretreatment stage)
- Kugadziriswa kwepolycondensation inoshanda zvakanyanya yepolyester yakadzokororwa (r-PET)

II. Mashandisirwo Akananga uye Zvakanakira Zvehunyanzvi

Antimony glycolate inotsiva zvinhu zvechinyakare zvinokonzeresa (zvakadai seantimony trioxide uye antimony acetate) mu polyester polycondensation reactions, uye mashandisirwo ayo chaiwo uye kuvandudzwa kwekushanda ndeizvi:

1. Inoshanda zvakanyanya pakukonzeresa kuunganidzwa kwemvura mumuviri, ichiwedzera kugona kwayo kugadzira zvinhu.
- Mashandisirwo: Sechinokonzeresa chikuru, chinokurumidzisa danho re polycondensation mushure me transesterification kana direct esterification, zvichiwedzera zvakanyanya mwero we polymerization.
- Mhedzisiro: Nehuwandu hwakaenzana hweantimony, nguva yekuita inopfupikiswa ne10%–15%; kana mukati menguva imwe chete, mwero wepolymerization (DP) uye intrinsic viscosity (IV) zvakakwirira, uye goho renzvimbo yeyuniti rinovandudzika.

2. Deredza huwandu hweantimony hwasara muzvigadzirwa zvakapedzwa kuti husvike pazvinodiwa zvegirini uye zvekuchengetedza nharaunda.
- Mashandisirwo: Nekuda kwekushanda kwayo kwakanyanya kwe catalytic, huwandu hunodiwa kuwedzerwa i60%–70% chete ye catalysts dzechinyakare (dzakavakirwa pa antimony element).
- Mhedzisiro: Huwandu hweSb hwasara mumaPET chips hunogona kudzorwa zvakadzikama pa ≤150 ppm, uye mamwe mabhodhoro emhando yepamusoro anogona kunge akaderera kusvika ≤100 ppm, ayo ari pasi zvakanyanya pane 200–250 ppm yeantimony acetate system, zvichizadzisa zvirambidzo pakutama kwezvinhu zvinosangana nechikafu zvakaiswa neEU, US FDA nedzimwe hurumende.

3. Kuvandudza ruvara uye hunhu hweoptical hwezvigadzirwa zvepolyester
- Mashandisirwo: Antimony glycol inonyungudika zvachose uye inoparadzirwa zvakaenzana mu reaction system, kudzivirira local-catalysis kana simbi kuunganidzwa.
- Mhedzisiro: B-value (yellowness index) yemaPET chips akagadzirwa inoderedzwa nemayuniti 1-2 zvichienzaniswa ne antimony trioxide system, nepo L-value (kupenya) ichivandudzwa, zvichiita kuti zvive zvakakodzera kugadzirwa kwemafirimu e optical uye fibers dzakapenya zvakanyanya.

4. Deredza migumisiro yakaipa uye kuvandudza zviratidzo zvemhando yepamusoro yechigadzirwa.
- Mashandisirwo: Deredza maitiro ekunze akadai se ethylene glycol etherification uye kudzivirira kuumbwa kwe diethylene glycol (DEG).
- Migumisiro: Huwandu hweDEG muPET hunogona kudzorwa pa ≤0.8% (zvichienzaniswa neanenge 1.0%–1.2% mumasisitimu akajairwa), kunatsiridza nzvimbo yekunyunguduka uye kugadzikana kwekupisa, uye kunatsiridza mashandiro ekutenderera nekuputira.

5. Gadzirisa kugona kwe spinnability mushure mekugadzirisa kuti uderedze mwero wekutyoka.
- Mashandisirwo: Chinosara che catalytic chakafanana uye chakapfava zvikuru muhukuru hwe particle (hapana chinhu chakasungirirwa mushure mekunyungudika), uye hachivhari firita re spinning assembly.
- Mhedzisiro: Mwero wekuputsika kwepolyester filament unoderedzwa neinopfuura 30%, simba refiber uye kufanana kwerefu zvinovandudzwa, uye mwero wezvigadzirwa zvepamusoro unogona kusvika 100%.

6. Zviri nyore kushandisa uye kuchinjika kwemuchina
- Mashandisirwo: Inogona kunyungudutswa zvakananga mu ethylene glycol kugadzira mhinduro ye catalyst yakafanana (concentration 2%–5%), zvichiita kuti kuyerwa nekudyiswa kurambe kuripo uye kwakanyatsojeka.
- Mhedzisiro: Inodzivisa njodzi yekunaya kwemvura kunokonzerwa ne antimony acetate hydrolysis, uye inobvisawo kudiwa kwe antimony trioxide grinding uye dispersion process, zvichiita kuti ive yakakodzera kune miti mikuru yepolyester inoenderera mberi (inoburitsa mutsetse mumwe chete pazuva yemazana ematani kana kupfuura).

III. Zvinyorwa Zvekuwedzera (Mazano Ekusarudza)

Zvichienzaniswa neantimony acetate, antimony glycol ine kugadzikana kwakanyanya kwekupisa uye hainyanyi kukanganiswa ne sublimation kana kuora kana tembiricha ye polycondensation iri pamusoro pe300°C, nokudaro ichideredza kuiswa kweantimony mumapombi e vacuum.
- Zvichienzaniswa neantimony trioxide: Antimony glycol ine kunyungudika kwe >10% (chikamu chikuru, 80℃) mu ethylene glycol, nepo antimony trioxide ine kunyungudika kuri pasi pe 0.1%, saka kupararira kwayo uye kushanda kwayo kwekutanga kuri nani zvakanyanya pane yekupedzisira.
- Zvipingamupinyi pakushandisa: Hazvina kukodzera masisitimu asina antimony (senge mamwe mabhodhoro anozadza nekupisa uye kurongedza kwekurapa), asi zvinogona kushandiswa semhinduro yekuchinja mukuchinja antimony-reduction.