PET (polyethylene terephthalate) inoshandiswa zvakanyanya thermoplastic polymer kune akasiyana maapplication, akadai sekurongedza, machira, uye mainjiniya.PET ine yakanakisa mechaniki, inodziya, uye yekuona zvivakwa, uye inogona kudzokororwa uye kushandiswazve kune zvigadzirwa zvitsva.Nekudaro, PET zvakare ndeye hygroscopic zvinhu, zvinoreva kuti inotora hunyoro kubva kunharaunda, uye izvi zvinogona kukanganisa kunaka kwayo uye kuita kwayo.Hunyoro muPET hunogona kukonzera hydrolysis, inova kemikari inokonzeresa inopwanya cheni dzepolymer uye inoderedza iyo intrinsic viscosity (IV) yezvinhu.IV chiyero chehuremu hwemamorekuru uye dhigirii repolymerization yePET, uye chiratidzo chakakosha chekusimba, kuoma, uye kugadziriswa kwechinhu.Nokudaro, zvakakosha kuomesa uye kujekesa PET isati yasvika, kubvisa unyoro uye kudzivirira kurasikirwa kweIV.
Infrared crystal dryer PET Granulationinyowani uye yehunyanzvi tekinoroji inoshandisa infrared (IR) mwenje kuomesa uye crystallize PET flakes mune imwe nhanho, isati yaadyisa kune extruder kuti ienderere mberi kugadzirisa.IR mwenje imhando yemagetsi emagetsi emagetsi ane wavelength ari pakati pe0.7 ne1000 mamicrons, uye anogona kutorwa nePET nemamorekuru emvura, zvichiita kuti adedere uye aite kupisa.Chiedza cheIR chinogona kupinda mukati mePET flakes nekudzipisa kubva mukati, zvichikonzera kuomeswa nekukurumidza uye kunyatsoita uye crystallization kupfuura nzira dzakajairwa, dzakadai semhepo inopisa kana vacuum drying.
Infrared crystal dryer PET Granulation ine mabhenefiti akati wandei pamusoro pechinyakare kuomesa uye crystallization nzira, dzakadai se:
• Yakaderedzwa kuomeswa uye crystallization nguva: The IR chiedza chinogona kuoma uye crystallize PET flakes mumaminitsi e20, zvichienzaniswa nemaawa akawanda anodiwa nenzira dzinowanzoitwa.
• Kuderedza kushandiswa kwesimba: Chiedza che IR chinogona kuomesa uye crystallize PET flakes ine simba rekushandisa 0.08 kWh / kg, zvichienzaniswa ne0.2 kusvika 0.4 kWh / kg inodiwa nenzira dzinowanzoitwa.
• Kuderedza unyoro hwehunyoro: Chiedza cheIR chinogona kuoma uye crystallize PET flakes kusvika kune hunyoro hwekupedzisira huri pasi pe50 ppm, zvichienzaniswa ne100 kusvika ku200 ppm inowanikwa nenzira dzinowanzoitwa.
• Yakaderedzwa IV kurasikirwa: Chiedza che IR chinogona kuoma uye crystallize PET flakes neine shoma IV kurasikirwa kwe0.05, kana ichienzaniswa ne0.1 kusvika ku0.2 IV kurasikirwa kunokonzerwa nemaitiro akajairika.
• Kuwedzera kuwanda kwehuwandu: Chiedza cheIR chinogona kuwedzera kuwanda kwePET flakes ne10 kusvika ku20%, zvichienzaniswa nehuwandu hwepakutanga, iyo inovandudza kushanda kwekudya uye kubuda kweextruder.
• Kuvandudzwa kwehutano hwechigadzirwa: Chiedza cheIR chinogona kuomesa uye kujekesa PET flakes pasina kukonzera yellowing, kuora, kana kusvibiswa, izvo zvinowedzera kutaridzika uye maitiro ezvigadzirwa zvekupedzisira.
Nezvakanakira izvi, Infrared crystal dryer PET Granulation inogona kuvandudza kushanda uye kunaka kwePET extrusion, uye inogona kusangana nezvinodiwa zvechikafu-giredhi application.
Maitiro eInfrared crystal dryer PET Granulation inogona kukamurwa kuita matanho matatu makuru: kudyisa, kuomesa uye crystallizing, uye extruding.
Kudyisa
Nhanho yekutanga yeInfrared crystal dryer PET Granulation iri kudya.Munhanho iyi, maPET flakes, anogona kunge ari mhandara kana kushandiswazve, anodyiswa muIR dryer nescrew feeder kana hopper.Iyo PET flakes inogona kuve nekutanga mwando yemukati inosvika 10,000 kusvika 13,000 ppm, zvichienderana nekwakabva uye mamiriro ekuchengetedza.Chiyero chekudyisa uye kunyatsoita zvinhu zvakakosha zvinokanganisa kuomesa uye crystallization kuita uye kunaka kwechigadzirwa.
Kuomesa uye Crystallizing
Nhanho yechipiri yeInfrared crystal dryer PET Granulation iri kuomesa uye kupenya.Mune ino nhanho, iwo PET flakes anooneswa kune IR mwenje mukati medhiramu inotenderera, ine inotenderera chiteshi uye paddles mukati maro.Chiedza cheIR chinoburitswa nebhangi rakamira re IR emitters, iri pakati pedhiramu.Iyo IR mwenje ine wavelength ye1 kusvika 2 microns, iyo yakagadziridzwa kune inotorwa spectrum yePET nemvura, uye inogona kupinda kusvika ku5 mm muPET flakes.Chiedza cheIR chinopisa PET flakes kubva mukati, zvichiita kuti mamorekuru emvura anyunguduke uye maPET molecules azungunuke uye agadzirise zvakare kuita crystalline chimiro.Hupfu hwemvura hunobviswa nerukova rwemhepo yakapoteredza, iyo inoyerera nemudhiramu uye inotakura mwando kuenda nayo.Iyo inotenderera chiteshi uye mapadhi anoendesa iyo PET flakes padivi peiyo axis yechigubhu, ichive nechokwadi yunifomu uye homogeneous kuratidzwa kune IR mwenje.Iyo yekuomesa uye crystallizing maitiro inotora anenge maminitsi makumi maviri, uye inoguma mune yekupedzisira mwando yemukati isingasviki makumi mashanu ppm uye kushoma IV kurasikirwa kwe0.05.Iyo yekuomesa uye kristaro maitiro inowedzerawo kuwanda kwehuwandu hwePET flakes negumi kusvika 20%, uye inodzivirira kutsvuka uye kushatisa kwezvinhu.
Extruding
Yechitatu uye yekupedzisira nhanho yeInfrared crystal dryer PET Granulation iri extruding.Mune ino nhanho, iyo yakaomeswa uye yakakwenenzverwa PET maflakes anopihwa kune extruder, iyo inonyunguduka, homogenizes, uye inoumba izvo zvinhu muzvigadzirwa zvinodiwa, senge mapellets, fiber, mafirimu, kana mabhodhoro.Iyo extruder inogona kunge iri imwe-screw kana mapatya-screw mhando, zvichienderana neyakagadzirirwa chigadzirwa uye zvinowedzera zvinoshandiswa.Iyo extruder inogona zvakare kuve yakashongedzerwa ine vacuum vent, iyo inogona kubvisa chero yakasara mwando kana kuputika kubva mukunyunguduka.Iyo extruding process inopesvedzerwa nekumhanyisa screw, screw configuration, barrel tembiricha, die geometry, uye melt rheology.Iyo extruding process inofanirwa kuvandudzwa kuti iwane yakatsetseka uye yakagadzikana extrusion, isina hurema, senge kunyungudika kutsemuka, kufa kuzvimba, kana kusagadzikana kwedimensional.Iyo extruding process inogona zvakare kuteverwa neyekumashure kurapwa maitiro, sekutonhodza, kucheka, kana kuunganidza, zvichienderana nerudzi rwechigadzirwa uye midziyo yepasi.
Mhedziso
Infrared crystal dryer PET Granulation inyowani uye yehunyanzvi tekinoroji inoshandisa IR mwenje kuomesa uye kuvhenekesa PET flakes munhanho imwe, isati yaadyisa kune extruder kuti ienderere mberi kugadzirisa.Iyi tekinoroji inogona kuvandudza kugona uye kunaka kwePET extrusion, nekudzikisa kuomeswa uye crystallization nguva, mashandisiro esimba, hunyoro hwemukati, uye kurasikirwa kweIV, uye nekuwedzera kuwanda kwehuwandu uye kunaka kwechigadzirwa.Iyi tekinoroji inogona zvakare kusangana nezvinodiwa zvechikafu-giredhi application, nekuchengetedza iyo IV nekudzivirira yero uye kuderedzwa kwePET.Iyi tekinoroji inogona kubatsira mukuenderera uye hupfumi hwakatenderedza hwePET, nekugonesa kudzokorodza uye kushandiswazve kwePET kune zvigadzirwa zvitsva.
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Nguva yekutumira: Jan-25-2024