1.xabagta xayawaankahordhac
PET magaca kiimikaad Polyethylene terephthalate, sidoo kale loo yaqaan polyester, qaacidada kiimikada COC6H4COOCH2CH2O.Dihydroxyethyl terephthalate waxaa lagu diyaariyey transesterification of dimethyl terephthalate leh ethylene glycol ama esterification of terephthalate leh ethylene glycol, ka dibna falcelinta polycondensation.Waa polyester ka samaysan crystalline, caddaan caano ah ama huruud khafiif ah, polymer crystalline aad u sarreeya oo leh siman oo dhalaalaysa.Waa xabagta caadiga ah ee nolosha waxaana loo qaybin karaa APET, RPET iyo PETG.

PET waa caddaan caano ah ama huruud khafiif ah, polymer crystalline aad u sarreeya oo leh siman, dhalaal badan.Waxay leedahay sifooyin aad u fiican oo jireed iyo farsamo oo heerkul ballaadhan, heerkulka isticmaalka muddada-dheer ilaa 120 ℃, dahaarka korantada aad u fiican, xitaa heerkulka sare iyo soo noqnoqda sare, sifooyinka korontadu wali waa wanaagsan yihiin, laakiin iska caabbinta corona liidata, caabbinta gurguurta, iska caabin daal, iska caabin khilaaf, xasilloonida cabbirka ayaa aad u wanaagsan.PET waxay leedahay dammaanad ester ah, burburku wuxuu ku dhici doonaa ficilka aashitada xooggan, alkali xooggan iyo uumiga biyaha, iska caabinta dareerayaasha organic, caabbinta cimilada wanaagsan.

2. hantida xabagta
PET waxay leedahay iska caabin gurguurta oo wanaagsan, iska caabin daal ah, iska caabin khilaaf iyo xasillooni cabbir, xidhid yar iyo adayg sare, waxayna leedahay adayga ugu weyn ee heerkulbeegyada: waxqabadka dahaarka korantada oo wanaagsan, saameyn yar oo heerkulka ah, laakiin caabbinta korona oo liidata.Aan sun ahayn, iska caabin cimilo, xasilooni wanaagsan oo ka dhan ah kiimikooyinka, nuugista biyaha hooseeya, caabbinta asiidhyada daciifka ah iyo dareerayaasha organic, laakiin aan kulaylka u adkaysan immersion biyaha, ma caabbinta alkali.

Xabagta PETwaxay leedahay heerkulka kala guurka galaas sare, heerka crystallization gaabis ah, wareegga dheeraynta, wareegga dheeraynta, yaraynta qaabaynta weyn, xasilloonida cabbir liidata, qaabaynta crystallization jajaban, iska caabin kulayl hooseeya.

Iyadoo loo marayo hagaajinta wakiilada nuclei-ka iyo walxaha kiristaalo iyo xoojinta fiber galaas, PET waxay leedahay sifooyinka soo socda marka lagu daro sifooyinka PBT.
1. Heerkulka qallafsanaanta kulaylka iyo heerkulka isticmaalka muddada-dheer ayaa ah kuwa ugu sarreeya balaastikada guud ee thermoplastic.
2. Sababtoo ah iska caabbinta kulaylka sare, PET-ga la xoojiyay waxaa lagu dhejiyaa 10S ee qubeyska alxanka ee 250 ° C, ku dhawaad ​​iyada oo aan qalloocin ama midabayn, taas oo si gaar ah ugu habboon diyaarinta qaybaha korantada iyo korantada ee alxanka alxanka.
3. Xoog laabashada waa 200MPa, modules laastikada waa 4000MPa, caabbinta gurguurta iyo daalka ayaa sidoo kale aad u wanaagsan, qallafsanaanta dusha sare, iyo sifooyinka farsamada waxay la mid yihiin balaastikada heerkulbeegga.
4. Maadaama qiimaha ethylene glycol ee loo isticmaalo soo saarista PET uu ku dhawaad ​​kala badh ka yahay butanediol ee loo isticmaalo soo saarista PBT, xabagta PET iyo la xoojiyay ee PET ayaa ah qiimaha ugu hooseeya marka loo eego balaastikada injineerinka waxayna leeyihiin waxqabad qiimo sare leh.

Si loo hagaajiyo guryaha PET, PET waxaa lagu dahaadhi karaa kombuyuutar, elastomer, PBT, fasalka PS, ABS, PA.
PET ( PET-da la xoojiyay) waxaa inta badan lagu farsameeyaa qaabaynta cirbadeynta, iyo hababka kale waxaa ka mid ah extrusion, dharbaaxida, dahaarka iyo alxanka, shaabadeynta, makiinada, dahaarka faakuumka iyo hababka kale ee habaynta sare.Si fiican u qalaji ka hor intaadan samaynin.

Polyethylene terephthalate waxaa lagu diyaariyaa transesterification of dimethyl terephthalate leh ethylene glycol ama esterification of terephthalate leh ethylene glycol, ka dibna falcelinta polycondensation.Waa polyester-ka buuxa ee crystalline, celceliska miisaanka kelli (2-3) × 104, saamiga celceliska miisaanka celceliska tirada celceliska miisaanka kelli waa 1.5-1.8.

heerkulka kala guurka galaas 80 ℃, Martin kulaylka iska caabin 80 ℃, kulaylka qallafsanaanta heerkulka 98 ℃ (1.82MPa), heerkulbeegga kala 353 ℃.Waxay leedahay sifooyin farsamo oo aad u fiican.Qalafsanaan sare.Adayg sare, nuugista biyaha yar, xasilloonida cabbirka wanaagsan.Adayg wanaagsan, iska caabin saamayn, iska caabin khilaaf, iska caabin gurguurta.Iska caabin kiimikaad oo wanaagsan, ku milmay cresol, sulfuric acid xoog leh, nitrobenzene, trichloroacetic acid, chlorophenol, aan milmi karin methanol, ethanol, acetone, alkane.Heerkulka shaqada -100 ~ 120 ℃.Xoog laabashada 148-310MPa
nuugista biyaha 0.06% -0.129%
Awoodda saamaynta 66.1-128J /m
Rockwell adkaanta M 90-95
Kordhinta 1.8% -2.7%

3. farsamada farsamaynta
Habaynta PET waxay noqon kartaa qaabaynta cirbadeynta, extrusion, dharbaaxada, dahaarka, isku xidhka, machining, electroplating, vacuum gold plating, printing.Kuwa soo socda ayaa inta badan soo bandhigaya laba nooc.
1. Marxaladda duritaanka ① heerkulka heerkulka: buskudka: 280 ~ 295 ℃, hore 270 ~ 275 ℃, foornada dhexe 265 ~ 275 ℃, ka dib 250-270 ℃;Xawaaraha xawaashka 50 ~ 100rpm, heerkulka caaryada 30 ~ 85 ℃, caaryada amorphous waa 70 ℃, cadaadiska dhabarka 5-15KG.② Tijaabada dehumidification qalajiyaha, heerkulka tube wax 240 ~ 280 ℃, cadaadiska duritaanka 500 ~ 1400 ℃, heerkulka qaabaynta 260 ~ 280 ℃, heerkulka qalajiyey 120 ~ 140 ℃, qaado 2 ~ 5 saacadood.
2. Marxaladda filimka, xabagta PET waa la jarjaray oo hore loo qalajiyey si looga hortago hydrolysis, ka dibna xaashida qaro weyn ayaa lagu sii daayaa fidiyaha at 280 ° C iyada oo loo marayo T-caaryada, iyo durbaanka qaboojinta ama qaboojiyaha waa la demiyay Ku hay qaab amorphous ah oo ku wajahan jihaynta xajinta.Xaashida qaro weyn ayaa markaa laba jiho u kala fidisay teendhada si loo sameeyo filim PET ah.

Kala-baxa dhererka waa in horay loo sii kululeeyo xaashida qaro weyn ilaa 86 ~ 87 ℃, iyo heerkulkan, fidi ilaa 3 jeer dhinaca jihada fidinta ee diyaaradda xaashida qaro weyn, si ay hanuuninteeda u wanaajiso heerka crystallization si ay u gaarto heerkul sare: Heerkulka preheating transverse of 98 ~ 100 ℃, heerkulka xamaasad ee 100 ~ 120 ℃, saamiga tensile ee 2.5 ~ 4.0, iyo heerkulka goobta kulaylka ee 230 ~ 240 ℃.Filimka ka dib fidinta toosan iyo toosan sidoo kale wuxuu u baahan yahay inuu ahaado qaab kuleyl ah si loo baabi'iyo qallafsanaanta filimka ee ay keento iskala-bixinta iyo sameynta filim leh xasilloonida kulaylka wanaagsan.