Ukomisa nge-infrared kunokubaluleka kakhuluukuphucula ukusebenza kwe-twin-screw extruder kuba inciphisa ukuthotywa kwexabiso le-IV kwaye iphucula kakhulu ukuzinza kwenkqubo yonke.
Okokuqala, i-PET regrind iya kukrolwa kwaye yomiswe malunga nemizuzu eyi-15-20 ngaphakathi kwe-IRD. Le crystallization kunye nenkqubo yokomisa iphunyezwa yinkqubo yokufudumala ngokuthe ngqo usebenzisa i-infrared radiation ukufezekisa ubushushu bezinto eziphathekayo ze-170 ° C. Xa kuthelekiswa neenkqubo ezicothayo zomoya oshushu, igalelo lamandla elikhawulezayo nelithe ngqo linegalelo kwibhalansi egqibeleleyo yokuguquguquka ngokusisigxina amaxabiso okunyakama kwe-infrared radiation-infrared radiation control systems zinokusabela ekutshintsheni iimeko zenkqubo ngemizuzwana. Ngale ndlela, ixabiso kuluhlu lwe-5,000 ukuya kwi-8,000 ppm ngaphakathi kwe-IRD iyancitshiswa ngokufanayo ibe yinto eseleyo yokufuma malunga ne-150-200 ppm.
Njengomphumo wesibini wenkqubo ye-crystallization kwi-IRD, ubuninzi bobuninzi bezinto ezichotshoziweyo zinyuka, ngakumbi kwiiflakes ezinobunzima obulula kakhulu. Kule meko:I-IRD inokunyusa ubuninzi be-bulk density nge-10% ukuya kwi-20%, enokuthi ibonakale incinci kakhulu, kodwa inokuphucula kakhulu ukusebenza kwesondlo kwi-inlet extruder - nangona isantya se-extruder sihlala sifana, kunokuphucula kakhulu ukusebenza kokuzaliswa kwesikrufu.
Njengenye indlela yobushushu obuphezulu becrystallization kunye neenkqubo zokomisa, inkqubo ye-IRD inokuphinda iyilwe njengesomisi esikhawulezayo ukuze sisebenze ngokufanelekileyo nakwiqondo lobushushu elingaphantsi kwe-120 °C. Kule meko, umxholo wokufuma ophunyeziweyo uya kulinganiselwa "kuphela" malunga ne-2,300 ppm, kodwa ngale ndlela unokugcinwa ngokuthembekileyo, ngakumbi phakathi koluhlu lwamaxabiso achazwe ngumenzi we-extruder. Enye into ebalulekileyo kukuphepha ukuguquguquka okuphezulu kunye nokusisigxina kwixabiso, kunye nokunciphisa umxholo womswakama ukuya kwi-0.6% eya kunciphisa kakhulu i-parameter ye-IV kwizinto ezityhidiweyo zeplastiki. Ixesha lokuhlala kwindawo yokomisa lingancitshiswa libe yimizuzu eyi-8.5 kwaye ukusetyenziswa kwamandla kungaphantsi kwama-80 W / kg / h.
Ixesha lokuposa: Feb-24-2022