Sharaxaad Gaaban:


  • Tixraaca FOB Qiimaha:
    La gorgortami karo
    / Tan
  • Dekedda:Shiinaha
  • Shuruudaha Lacag-bixinta:L/C, T/T, Western Union
  • CAS:25038-59-9
  • Faahfaahinta Alaabta

    Tags Product

    Magaca Alaabta:Polyethylene Terephthalate

    Qaab molecular:C10H6O2

    CAS Maya:25038-59-9

    Qaab-dhismeedka molecular ee alaabta:

    Polyethylene Terephthalate

     

    Guryaha Kiimikada:

    Polyethylene terephthalate (PET) waa polymer-ka-ka-soo-baxa leh oo leh iska caabin kiimiko oo heer sare ah, dhalaalid dhaqdhaqaaqa iyo wareegga.polymer-ku wuxuu ka kooban yahay unugyo soo noqnoqda sida ku cad sawirka 1. Unug kastaa wuxuu leeyahay dherer jireed oo qiyaastii 1.09 nm ah iyo miisaan unugyo ah ~ 200.Marka laga soo saaro falcelinta terephthalic acid iyo ethylene glycol, waxaa ku daboolan bidixda H- iyo midigta -OH.Polymerization waxaa markaa la socda soo saarista biyaha kaas oo laga saaro heerkulka sare iyo faakuumka.Sidaas awgeed joogitaanka biyaha ee gobolka dhalaalay ayaa si degdeg ah u baabi'in doona qaab-dhismeedka si si fiican loo qalajiyo polymerka ka hor inta aan la dhalaalin fiilooyinka ayaa lagama maarmaan u ah.

    Giraanta udgoonka oo ay weheliso silsilad alifaad ah oo gaaban ayaa ka dhigaysa polymer-ka molecule adag marka la barbar dhigo polymers-yada kale ee alifleyda sida polyolefin ama polyamide.La'aanta dhaqdhaqaaqa qaybaha ee silsiladaha polymer-ka waxay keenaysaa xasillooni heerkul sare ah.Polymer-ka darajada dharku wuxuu yeelan doonaa celcelis ahaan tiro 100 ah oo ku celis ah unugyadiiba si dhererka dheer ee silsiladda polymer-ka caadiga ah uu u yahay ilaa 100nm oo miisaankeedu yahay 20,000.Heerarka sare ee polymerization waxay soo saartaa fiilooyin awood sare leh laakiin qulqulka dhalaalka iyo xasilloonida dhalaalka ilaa xaddi yar oo qoyaan ah ayaa keena nabaad-guurka hydrolytic.Cabbirka celceliska darajada polymerization-ka waxaa lagu sameeyaa ha ahaato mid la dhalaaliyay viscosity (iyada oo lagu cabbirayo hoos u dhaca cadaadiska iyada oo loo marayo dariiq saxan) ama viscosity ee polymer-ka la milmay ee dareeraha habboon.Midda dambe waa cabbirka dhererka silsiladda polymer ee loo yaqaan viscosity Intrinsic ama IV iyo qiimaha polymer-ka heerka caadiga ah waa 0.6 dl/g gudaha 60/40 w/w isku dhafka phenol iyo dareeraha tetrachloroethane.IV ee dareeraha dambe wuxuu la xidhiidhaa Mv (Miisaanka celceliska viscosity) ee polymerka ee isla'egta Mark Howink (Equation 1).

     

    Codsiga:

    Polyethylene terephthalate, oo caadi ahaan loo yaqaan PET, waa xubin ka mid ah qoyska polyester-ka ee polymers. Isku-darka guryaha sida qallafsanaanta iyo qallafsanaanta, xasilloonida cabbirka, caabbinta kiimikada iyo miisaanka fudud, waxay PET ka dhigaysaa walxo dabacsan oo si ballaaran loogu isticmaalo codsiyo dhowr ah sida fiilooyinka, xaashiyaha , filimada, iyo weelasha cabitaanka.Loo isticmaalo qaybaha korantada oo ay ku jiraan saldhigyada gudbinta iyo saldhigyada laambada, guryaha bamka, gears-ka, biraha, gacmaha kursiga, qalabka wax lagu shubo iyo qaybaha alaabta guriga.
    Sida polyester-yada kale, PET waxaa lagu soo saaraa warshadaha iyadoo si toos ah loo nadiifiyo asiidhyada dicarboxylic leh diols. Hababka wax soo saarka caadiga ah waxay ku salaysan yihiin polymerization of ethylene glycol (MEG) oo leh mid ka mid ah terephthalic acid (PTA) ama dimethyl terephthalate (DMT) oo ay joogaan birta birta ah. .




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