Qalajiyaha Infrared Rotary + nidaamka SSP
Polymerization wejiga adag (SSP) waa tignoolajiyada furaha ah ee lagu gaaro "kor u qaadista tayada" iyo "dib u warshadaynta cagaaran" ee silsiladda warshadaha PET.
LIANDA MACHINERY ayaa si qoto dheer u midaysaQalajiyaha ROTARY INFRARED oo leh nidaamka SSPsi loo sameeyo xal isku dhafan oo ah "Ka saar qoyaan waxtar leh - Kordhinta viscosity saxda ah - Hawlgalka isticmaalka hooseeya". Tani waxay si weyn u wanaajisaa guryaha rPET, xasiloonida kulaylka iyo nadiifinta kiimikada. Farsamadani waxay door aan la bedeli karin ka ciyaartaa silsiladda warshadaha PET (gaar ahaan dib u warshadaynta tayada sare leh iyo wax soo saarka wax soo saarka sare).
Haddii aad u baahan tahay inaad ogaato cabbirrada hab-socodka gaarka ah ama habaynta qalabka, fadlan la xidhiidh Mashiinnada Lianda si aad u hesho xalal farsamo oo habaysan
Marxaladda ka hor-habaynta
Qalajinta: PET waa hygroscopic waxayna u baahan tahay in ay ka saarto IRD (IRD ka dib, qoyaanka ugu dambeeya ee PET ≤ 50 ppm) si looga fogaado biyo la'aanta iyo hoos u dhaca heerkulka sare.
Crystallization: Pellets PET waxaa crystallized by IRD (crystallization degree waa qiyaastii 30-40%) si looga hortago in pellets PET ku dheggan ama dhalaalay heerkulka sare ee xiga, iyada oo la siinayo jawi adag oo xasilloon oo falcelinta polycondensation.
Marxaladda Falcelinta Condensation-ka-adag
➢ Xaaladaha falcelinta:
Heerkulka: lagu xakameeyo 200-240 ℃ (ka hooseeya barta dhalaalka PET 250-260 ℃, adkayso).
Qulqulka gaaska faakuumka/inert: nitrogen waa la soo bandhigaa oo faakuum ayaa la sawiraa si meesha looga saaro falcelinta byproduct ethylene glycol (EG) oo kor loogu qaado falcelinta polycondensation ee jihada togan.
falcelinta kiimikada:
Hydroxyl (-OH) iyo carboxyl (-COOH) ee dhamaadka silsiladda molecular PET waxay maraan falcelinta uumiga si ay u sameeyaan dammaanad ester ah (-COO-), halka la sii daayo ethylene glycol (EG), si silsiladda kelliyadu ay u sii socoto inay sii fidiso miisaanka molecular (viscosity IV) si tartiib tartiib ah u kordho.
Mashiinnada Lianda waxay isku daraan qalajinta infrared (IRD) ee nidaamka SSP, si dhakhso ah oo siman u kululeeya walxaha iyada oo loo marayo fallaadhaha infrared, waxay soo gaabinaysaa wakhtiga pretreatment, waxayna hagaajinaysaa waxtarka wareejinta mass ee falcelinta wajiga adag, si nidaamka oo dhan uu leeyahay sifooyinka waxtarka sare iyo badbaadinta tamarta, awoodda processing ballaaran, iyo xasilloonida wax soo saarka sare, taas oo ah - tayada sare ee dib-u-wareejinta ET.
LIANDA MACHINERY wuxuu isku daraa qalajiyaha crystal Infrared (IRD) ee nidaamka SSP, kaas oo isticmaala mowjadaha infrared si dhakhso ah oo siman u kululeeyo walxaha, gaabin wakhtiga daawaynta ka hor, iyo wanaajinta waxtarka wareejinta mass ee falcelinta wajiga adag, samaynta nidaamka oo dhan si heer sare ah tamar-ku-ool ah, oo leh karti wax-qabad oo weyn iyo xasilloonida alaabta. Waxay si gaar ah ugu habboon tahay wax-soo-saarka tayada sare leh ee baaxadda weyn ee PET dib loo warshadeeyey.
Haddii aad u baahan tahay tafaasiil dheeri ah oo farsamo ama xalal la habeeyey, waxaad la xidhiidhi kartaa Mashiinnada Lianda si aad u hesho taageero xirfadeed
Marka lagu daro tignoolajiyada qalajinta infrared-ka, waxay xaqiiqsanaysaa is-dhexgalka "qallajinta wasakhaysan + kobcinta viscosity", kor u qaadida dib-u-warshadaynta xidh-xidhan ee PET.
| Faa'iidada | Waxqabadka Gaarka ah |
| Miisaanka molecular korodhka | Viscosity gudaha (IV) si weyn ayaa loo kordhiyey iyo xoogga farsamada (xoogga fidinta, modules-laastikada) ayaa la hagaajiyay 30-50%. |
| Hagaajinta xasiloonida kulaylka | Barta dhalaalka (Tm) wax yar ayaa kordhay (qiyaastii 5-10 ℃), crystallinity waa la wanaajiyey, iyo caabbinta heerkulka sare waa la wanaajiyey (ku haboon preforms dhalada u adkaysta kulaylka). |
| Nadiifinta kiimikada oo la hagaajiyay | Waxay ka saartaa monomers haraaga ah (sida formaldehyde, acetaldehyde) iyo oligomers (content hoos ugu dhaca wax ka yar 50 ppm), buuxinta heerarka heerka cuntada. |
| Guryaha maaraynta dabacsan | Dareen-celinta dawlad-goboleedka adagi waxay ka fogaataa xaalufka kulaylaha ee ay keento heerkul-sare oo waxay si gaar ah ugu habboon yihiin soo-celinta tayada ee PET dib loo warshadeeyey. |
| Habraaca dabacsanaanta | Viscosity ee alaabta kama dambaysta ah waxaa si sax ah loo xakameyn karaa iyadoo la hagaajinayo heerkulka, waqtiga iyo heerka faakuumka, sidaas darteed buuxinta dalabaadka kala duwan. |
Codsiga
PET Preform
● Soo saarista dhalada hufnaanta sare leh:
Waxay xoojisaa isku-dhafka PET viscosity, waxay yaraynaysaa dilaaca jirka dhalada, ku habboon cabitaannada kaarboonaysan, weelasha qurxinta, iwm.
● Horumarinta dhalada kulaylka u adkaysata:
Iyada oo loo marayo SSP, qiimaha IV ayaa la kordhiyey oo ka sarreeya 0.85 dL/g, oo ku habboon dhalooyinka cabitaanka kuleylku ka buuxo (sida baakadaha shaaha degdega ah, kafeega).
Dib u warshadaynta tayada PET
● Dib u warshadaynta jajabyada dhalada ee dib loo warshadeeyay:
Macmiil ka dib dhalada dhalada ee PET waxaa lagu daaweeyaa hab isku dhafan oo ah "qallajin - wasakhaysan - wanaajinta viscosity" si meesha looga saaro EG, Acetaldehyde, VOC loona soo celiyo viscosity, dib ugu soo celinta heerka cuntada ama codsiyada heerka warshadaha (sida fiilooyinka, xaashida).
● Qiimaha dhaqaale ee wareega:
Marka lagu daro tignoolajiyada qalajinta infrared (IRD), " fuuqbaxa tamarta yar + kor u qaadida viscosity wax ku ool ah" ayaa la gaaraa si kor loogu qaado dib-u-warshadaynta xiran ee PET
Goobta balaastigga injineernimada
● Diyaarinta PET-ga oo tayo sare leh:
Soo saarista viscosity-sare ee PET (IV>1.0 dL/g) si loogu isticmaalo qaybaha baabuurta (sida gears, bearings), guryaha elektarooniga ah iyo kuwa korantada, iwm, si loogu beddelo caagagga injineernimada dhaqameed.
Alaabooyinka dhabta ah
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PLA Crystallizer qalajiyaha
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Polyester/PET Masterbatch Infrared Crystallization Qalajiyaha
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PET Flake/qaraar huumidifier kiristaalo ah
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Qalajiyaha crystal infrared PET Granulation
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Nidaamka flake IR-ammaan ah - nadiifinta PET ee baakadaha xidhiidhka tooska ah ee cuntada
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PLA PET heerkul-samaynta khadka xaashida extrusion