I-Polyvinyl chloride ingenye yamapulasitiki amakhulu amahlanu anenhloso ejwayelekile emhlabeni. Ngenxa yezindleko zayo eziphansi zokukhiqiza uma kuqhathaniswa ne-polyethylene nezinye izinsimbi, nokusebenza kwayo okuhle kakhulu kokucubungula kanye nezakhiwo zomzimba namakhemikhali emikhiqizo, ingahlangabezana nezidingo zokulungiselela kanzima ukuze kuthambile, ukunwebeka, i-fiber, ukunamathela nezinye izakhiwo, futhi isetshenziswa kabanzi. emikhakheni eyahlukene efana nezimboni, ezolimo, nezokwakha. Indlela yokuvuselela nokusebenzisa imfucuza ye-polyvinyl chloride ibaluleke kakhulu.
1.Ukuvuselelwa
Okokuqala, ukuvuselelwa okuqondile kungenziwa. Ukuvuselelwa okuqondile kwamapulasitiki angcolile kubhekisela ekucutshungulweni okuqondile kanye nokubunjwa kwamapulasitiki emfucuza ngokuhlanza, ukuchotshozwa, kanye ne-plasticization ngaphandle kwesidingo sokuguqulwa okuhlukahlukene, noma ukucutshungulwa nokubunjwa kwemikhiqizo ngokusebenzisa i-granulation. Ngaphezu kwalokho, ingabuye ishintshwe futhi ivuselelwe. Ukuguqulwa nokuvuselelwa kwamapulasitiki amadala kubhekisela ekuguqulweni ngokomzimba namakhemikhali kwamapulasitiki asetshenziswe kabusha ngaphambi kokucubungula nokwenza. Ukuguqulwa kungahlukaniswa kube ukuguqulwa komzimba kanye nokuguqulwa kwamakhemikhali. Ukugcwalisa, i-fiber composite, kanye nokuhlanganisa ukuqina kuyindlela eyinhloko yokuguqulwa komzimba kwe-PVC. Ukugcwalisa ukuguqulwa kubhekisela endleleni yokuguqulwa yokuxuba ngokulinganayo iziguquli zokugcwalisa izingxenye ezine-modulus ephakeme kakhulu kuma-polymers. Ukuguqulwa kwe-fiber composite reinforcement kubhekisela endleleni yokuguqula yokwengeza i-modulus ephezulu namandla aphezulu imicu yemvelo noma yokwenziwa ibe yi-polymer, ngaleyo ndlela ithuthukise kakhulu izakhiwo zomshini zomkhiqizo. Ukuguqulwa kwamakhemikhali e-PVC kufezwa ngokushintsha ukwakheka kwe-PVC ngokusebenzisa ukusabela okuthile kwamakhemikhali.
2.Ukususwa kanye nokusetshenziswa kwe-hydrogen chloride
I-PVC iqukethe cishe u-59% we-chlorine. Ngokungafani namanye ama-polymers e-carbon chain, uchungechunge lwegatsha lwe-PVC luphuka ngaphambi kweketanga eliyinhloko ngesikhathi sokuqhekeka, lukhiqize igesi enkulu ye-hydrogen chloride, ezogqwalisa imishini, ifake ubuthi be-Catalyst, futhi ithinte izinga lemikhiqizo eqhekekayo. Ngakho-ke, ukwelashwa kwe-hydrogen chloride kufanele kwenziwe ngesikhathi sokuqhekeka kwe-PVC.
3.Ukushisa i-PVC ukusebenzisa ukushisa negesi ye-chlorine
Kumapulasitiki kadoti aqukethe i-PVC, isici sokukhiqiza ukushisa okuphezulu ngokuvamile sisetshenziselwa ukuwaxuba nemfucuza ehlukahlukene evuthayo futhi kukhiqizwe amafutha aqinile anosayizi wezinhlayiyana ezifanayo. Lokhu akusizi nje kuphela ukugcinwa nokuthutha, kodwa futhi kungena esikhundleni sikaphethiloli osetshenziswa kuma-boilers okushisa amalahle nama-kilns ezimboni, futhi kudiza i-chlorine ukuze kuthuthukiswe ukusebenza kahle kokushisa.
Isikhathi sokuthumela: Jul-21-2023
