Antimony-ga Ethylene Glycol

Ethylene Glycol Antimony / Antimony Triglycolate - Sifooyinka Fiisikokemikaalka

Qeexitaanka Ganacsiga ee Ethylene Glycol Antimony

Baakad: Bacaha isku-dhafka ah ee aluminium-ka ah waa kuwo faakiyuum ah. Bac kasta waxay miisaankeedu yahay 15 ama 25 kiilogaraam waxaana lagu shubaa hal baaldi tankiiba.

Waa maxay meelaha loo isticmaalo iyo isticmaalka gaarka ah ee antimony glycol?

I. Meelaha ugu Muhiimsan ee Codsiga

Antimony glycolate waa kataliye polycondensation oo aad waxtar u leh, saafi ah, oo organometallic ah, oo inta badan loo isticmaalo warshadaha polyester-ka, gaar ahaan hababka polycondensation-ka dhalaalka iyadoo la adeegsanayo terephthalic acid (PTA) iyo ethylene glycol (EG) oo ah walxo ceeriin ah. Gaar ahaan, waxay daboolaysaa qaybaha hoose ee soo socda:

1. Soo saarista polyester resin (PET)
- Jajabyada polyester-ka ee heerka fiber-ka ah (ee loogu talagalay fiilooyinka iyo fiilooyinka polyester-ka)
- Jajabyada polyester-ka ee dhalada lagu sameeyo (biyo la cabbo, cabitaanno kaarboonaysan, dhalooyin kulul lagu buuxiyo, iwm.)
- Jajabyada polyester-ka ee heerka filimka (filimyada indhaha, filimada dahaarka korontada, iyo filimada baakadaha)

2. Polyester-yada iyo copolyester-yada wax laga beddelay
- Polyester-ka oo ka kooban diethylene glycol (DEG) oo hooseeya
- Polyester midabayn kara oo loo yaqaan 'CDP'
- Nidaamka qayb ahaan ee polybutylene terephthalate (PBT) (wuxuu u baahan yahay qaabayn)

3. Habka Dib-u-warshadaynta iyo Hagaajinta Iftiinka Polyester
- Dhalaalidda iyo dhumucda walxaha qashinka PET (marxaladda ka hor daaweynta SSP)
- Polycondensation catalysis oo aad waxtar u leh oo ah polyester dib loo warshadeeyay (r-PET)

II. Codsiyada Gaarka ah iyo Faa'iidooyinka Farsamada

Antimony glycolate wuxuu beddelaa kiciyeyaasha dhaqameed (sida antimony trioxide iyo antimony acetate) ee falgallada polycondensation ee polyester-ka, codsiyadiisa gaarka ah iyo horumarinta waxqabadka waa sidan soo socota:

1. Falcelinta polycondensation ee catalytic-ga oo aad waxtar u leh, taasoo kordhinaysa awoodda wax soo saarka.
- Codsiyada: Maadaama uu yahay kiciye ugu weyn, wuxuu dedejiyaa marxaladda polycondensation ka dib transesterification ama esterification toos ah, taasoo si weyn u kordhinaysa heerka polymerization.
- Saamaynta: Iyadoo la adeegsanayo isla xaddiga antimony-ga, waqtiga falcelinta waxaa la soo gaabiyaa 10%–15%; ama isla waqtigaas, heerka polymerization (DP) iyo viscosity-ga gudaha (IV) ayaa sarreeya, wax soo saarka booska ee cutubkuna waa la hagaajiyaa.

2. Yaree waxyaabaha ku jira antimony-ga ee ku jira badeecada la dhammeeyay si loo daboolo shuruudaha ilaalinta cagaaran iyo deegaanka.
- Adeegsiga: Sababtoo ah waxtarkeeda sare ee kicinta, xaddiga loo baahan yahay in lagu daro waa 60%–70% oo keliya kan kiciyeyaasha dhaqameed (oo ku salaysan curiyaha antimony).
- Natiijooyinka: Waxyaabaha ku jira Sb ee ku jira jajabyada PET waxaa si adag loo xakameyn karaa ≤150 ppm, qaar ka mid ah jajabyada dhalada ee heerka sare ah waxay noqon karaan kuwo hooseeya ilaa ≤100 ppm, taas oo aad uga hooseysa 200-250 ppm ee nidaamka antimony acetate, taasoo buuxinaysa xayiraadaha ku saabsan socdaalka agabka cuntada ee ay soo rogeen Midowga Yurub, US FDA iyo hay'adaha kale.

3. Hagaaji midabka iyo sifooyinka indhaha ee alaabada polyester-ka
- Codsiyada: Antimony glycol si buuxda ayaa loo milmaa oo si siman ayaa loogu kala firdhiyaa nidaamka falcelinta, iyadoo laga fogaanayo in si xad dhaaf ah loo kiciyo ama isku-darka birta.
- Natiijooyinka: Qiimaha-b (tusmada jaalaha ah) ee jajabyada PET ee la soo saaray waxaa hoos u dhacay 1-2 unug marka loo eego nidaamka antimony trioxide, halka qiimaha-L (dhalaalka) la hagaajiyay, taasoo ka dhigaysa kuwo ku habboon soo saarista filimada indhaha iyo fiilooyinka aadka u dhalaalaya.

4. Yaree falcelinta dhinaca ah iyo hagaajinta tilmaamayaasha tayada badeecada.
- Isticmaalka: Yaree falcelinta dhinaca sida etherification-ka ethylene glycol oo joojiya sameynta diethylene glycol (DEG).
- Saamaynta: Waxyaabaha DEG ee ku jira PET waxaa lagu xakamayn karaa ≤0.8% (marka la barbar dhigo qiyaastii 1.0%–1.2% nidaamyada caadiga ah), hagaajinta barta dhalaalka iyo xasilloonida kulaylka, iyo kor u qaadida waxqabadka wareegga hoose iyo qaabaynta afuufta.

5. Hagaaji wareegga ka dib marka la farsameeyo si loo yareeyo heerka jabka.
- Adeegsiga: Hadhaaga katalytic-gu waa mid isku mid ah oo aad u fiican cabbirka walxaha (ma jiraan walxo la hakiyey ka dib marka la kala diro), mana xidho shaashadda shaandhada ee isku-xidhka wareegga.
- Saamaynta: Heerka jabka wareegga fiilooyinka polyester-ka ayaa hoos u dhacay in ka badan 30%, xoogga fiilooyinka iyo isku-dhafka dhererka ayaa la hagaajiyaa, heerka badeecadaha sarena wuxuu gaari karaa 100%.

6. Fududeynta isticmaalka iyo la qabsiga qalabka
- Codsiyada: Waxaa si toos ah loogu milmi karaa ethylene glycol si loo diyaariyo xal kiciyayaal isku mid ah (xoog saarid 2%–5%), taasoo suurtogalinaysa cabbiraadda iyo quudinta joogtada ah oo sax ah.
- Saamaynta: Waxay ka fogaataa khatarta roobabka oo ay keento hydrolysis-ka antimony acetate, waxayna sidoo kale meesha ka saartaa baahida loo qabo habka shiididda iyo kala firdhinta antimony trioxide, taasoo ka dhigaysa mid ku habboon dhirta polyester-ka ee joogtada ah ee baaxadda weyn (wax soo saarka hal xariiq maalinle ah oo boqolaal tan ah ama ka badan).

III. Qoraallada Dheeraadka ah (Talooyinka Xulashada)

Marka la barbardhigo antimony acetate, antimony glycol wuxuu leeyahay xasillooni kuleyl oo sareysa wuxuuna u nugul yahay sublimation ama burburin heerkulka polycondensation ee ka sarreeya 300°C, taasoo yaraynaysa dhigista antimony ee tuubooyinka faakuumka.
- Marka la barbar dhigo antimony trioxide: Antimony glycol wuxuu leeyahay milmi >10% (jajab cuf, 80℃) ethylene glycol, halka antimony trioxide uu leeyahay milmi ka yar 0.1%, sidaas darteed kala firdhistiisa iyo firfircoonidiisa bilowga ah ayaa si weyn uga wanaagsan kan dambe.
- Xaddidaadaha codsiga: Kuma habboona nidaamyada aan lahayn antimony-ka (sida dhalooyinka qaarkood ee kulul-buuxa iyo baakadaha caafimaadka), laakiin waxaa loo isticmaali karaa xal ku-meel-gaar ah oo loogu talagalay beddelka antimony-ka.