Inkcazo:
Olu vavanyo lujolise ekuvavanyeni ukuhamba kwemathiriyeli ekrwada yeplastiki ukuncedisa iiplanti zeplastiki zokusetyenzwa kwenxalenye ekukhetheni imathiriyeli efanelekileyo.Ngokuqhuba iimvavanyo ezisemgangathweni elabhoratri, sithelekise izinto ezininzi eziqhelekileyo zeplastiki ekrwada kwaye sahlalutya umahluko wokuhamba kwazo.Iziphumo zovavanyo zibonisa unxibelelwano olubalulekileyo phakathi kokuhamba kwezinto zeplastiki ekrwada kunye nokuhamba ngexesha lokusetyenzwa, okunefuthe elibalulekileyo ekwenziweni kwamalungu eplastiki aneemilo ezahlukeneyo kunye nobukhulu.Eli nqaku libonelela ngengxelo eneenkcukacha yoyilo lovavanyo, izixhobo kunye neendlela, iziphumo zovavanyo, kunye nohlalutyo, lubonelela ngezalathiso ezixabisekileyo zokhetho lwemathiriyeli kunye nokulungiswa kwenkqubo kwizityalo zokusetyenzwa kwenxalenye yeplastiki.
1. Intshayelelo
Izityalo zePlasitiki ezilungisa iinxalenye zeplastiki zihlala zisebenzisa iintlobo ezahlukeneyo zemathiriyeli ekrwada yeplastiki ngexesha lenkqubo yokuvelisa, kwaye ukuhamba kwezi zinto kuchaphazela ngokuthe ngqo umgangatho wamalungu eplastiki enziweyo.Ke ngoko, ukuvavanya ukuhamba kwezixhobo zeplastiki kubalulekile ekwandiseni iindlela zokusetyenzwa, ukuphucula impumelelo yemveliso, kunye nokunciphisa iindleko.Olu vavanyo lujolise ekusebenziseni iindlela zovavanyo ezisemgangathweni ukuthelekisa iimpawu zokuqukuqela kwezixhobo ezahlukeneyo zeplastiki kunye nokubonelela ngesikhokelo sokukhetha izixhobo ezifanelekileyo kwinxalenye yeplastiki.
2. Uyilo loMfuniselo
2.1 Ukulungiselela izinto eziphathekayo
Izixhobo ezintathu zeplastiki eziqhelekileyo eziqhelekileyo zakhethwa njengezifundo zovavanyo: i-polyethylene (PE), i-polypropylene (PP), kunye ne-polystyrene (PS).Qinisekisa ukuba isampulu yemathiriyeli nganye ivela kumthombo omnye kwaye igcina umgangatho ongaguqukiyo ukuphelisa ucalucalulo olunokubakho lovavanyo ngenxa yokwahluka kwezinto.
2.2 Izixhobo zoMfuniselo
- I-Melt Flow Index Tester: Isetyenziselwa ukulinganisa i-Melt Flow Index (MFI) yezinto eziluhlaza zeplastiki, ipharamitha ebalulekileyo yokuvavanya ukuhamba kweplastiki etyhidiweyo.
- Isikali sokuWayisha: Sisetyenziselwa ukulinganisa ngokuchanekileyo ubunzima beesampulu zeplastiki zemathiriyeli ekrwada.
- I-Melt Flow Index Testing Barrel: Isetyenziselwa ukulayisha iisampuli ngokweemfuno eziqhelekileyo.
Isifudumezi: Sisetyenziselwa ukufudumeza nokugcina iMelt Flow Index Tester kubushushu obufunwayo.
- Isibali-xesha: Sisetyenziselwa ukubala ixesha lokuhamba kweplastiki etyhidiweyo.
2.3 Inkqubo yoMfuniselo
1. Sika iplastiki nganye isampula yemathiriyeli ekrwada ibe ngamasuntswana ovavanyo asemgangathweni kwaye uyomise iiyure ezingama-24 kwiqondo lobushushu begumbi ukuqinisekisa ukuba imiphezulu yesampulu ayinakufuma.
2. Cwangcisa ubushushu obufanelekileyo bokuvavanya kunye nomthwalo kwi-Melt Flow Index Tester kwaye wenze iiseti ezintathu zeemvavanyo kwizinto nganye ngokweendlela ezisemgangathweni.
3. Beka isampuli nganye yezinto eziluhlaza kwi-Melt Flow Index Testing Barrel kwaye emva koko ungene kwi-heater preheated de isampuli inyibilike ngokupheleleyo.
4. Ukukhulula iziqulatho zombhobho, ukuvumela iplastiki etyhidiweyo ukuba idlule ngokukhululekile kwi-orifice mold echaziweyo, kwaye ulinganise umthamo odlulayo kwi-mold ngaphakathi kwexesha elichaziweyo.
5. Phinda ulinge kathathu kwaye ubale i-avareji ye-Melt Flow Index kwiseti nganye yeesampuli.
3. Iziphumo zoVavanyo kunye noHlahlelo
Emva kokwenza iiseti ezintathu zovavanyo, i-avareji ye-Melt Flow Index kwisixhobo ngasinye seplastiki yamiselwa, kwaye iziphumo zezi zilandelayo:
- PE: I-Average Melt Flow Index ye-X g / 10min
- PP: I-Average Melt Flow Index ye-Y g / 10min
- PS: I-Average Melt Flow Index ye-Z g/10min
Ngokusekwe kwiziphumo zovavanyo, kuyacaca ukuba izixhobo ezahlukeneyo zeplastiki zibonakalisa ukuguquguquka okukhulu.I-PE ibonisa ukuhamba kakuhle, kunye ne-Melt Flow Index ephezulu, iyenza ilungele ukubumba iindawo zeplastiki ezinobunzima.I-PP inokuhamba okuphakathi, iyenza ifanelekele uninzi lwemisebenzi yokulungiswa kwenxalenye yeplastiki.Ngokuchaseneyo, i-PS ibonisa ukuhamba kakubi kwaye ifaneleke kakhulu ukwenza iindawo zeplastiki ezinobungakanani obuncinci kunye nezincinci.
4. Isiphelo
Uvavanyo lwelabhoratri lokuhamba kwezinto zeplastiki eziluhlaza lubonelele ngedatha yeMelt Flow Index yezixhobo ezahlukeneyo, kunye nohlalutyo lweempawu zabo zokuhamba.Kwimizi-mveliso yeplastiki yenxalenye yeplastiki, ukukhetha imathiriyeli efanelekileyo ekrwada kubaluleke kakhulu, njengoko umahluko wokuqukuqela uchaphazela ngokuthe ngqo umgangatho wokwenziwa kwamalungu eplastiki kunye nokusebenza kakuhle kwemveliso.Ngokusekwe kwiziphumo zovavanyo, sicebisa ukuba kubekwe phambili imathiriyeli ekrwada ye-PE ukwenza iinxalenye zeplastiki ezimilise nzima, kusetyenziswa imathiriyeli ye-PP ekrwada kwiimfuno zokusetyenzwa ngokubanzi, kunye nokuthathela ingqalelo imathiriyeli ekrwada ye-PS yokuvelisa iinxalenye zeplastiki ezinobungakanani obuncinci kunye nolubhityileyo.Ngokukhetha imathiriyeli enengqiqo, iiplanti zokulungisa zinokwandisa iindlela zokuvelisa, zonyuse umgangatho wemveliso, zinciphise iindleko zemveliso, kwaye ziphucule ukukhuphisana kwemarike.
Ixesha lokuposa: Jul-25-2023
