Iipalethi zeplastiki okwangoku zenziwe kakhulu nge-HDPE, kwaye amanqanaba ahlukeneyo e-HDPE aneempawu ezahlukeneyo. Iimpawu ezikhethekileyo ze-HDPE kukudityaniswa okufanelekileyo kwezinto ezine ezisisiseko: uxinano, ubunzima be-molecular, ukusasazwa kobunzima be-molecular kunye nezongezo. Ii-catalysts ezahlukeneyo zisetyenziselwa ukuvelisa ii-polymers ezizodwa zokusebenza ezenziwe ngokwezifiso. Ezi zinto ziguquguqukayo zidityaniswe ukuvelisa amanqanaba e-HDPE ngeenjongo ezahlukeneyo, ukufezekisa ibhalansi ekusebenzeni.
Kwimveliso kunye nokucutshungulwa kweepallet zeplastiki, umgangatho wezi zinto ziphambili unefuthe kwenye nenye. Siyazi ukuba i-ethylene yeyona nto iphambili yokwenza i-polyethylene, kwaye ezinye ii-comonomers ezimbalwa, ezifana ne-1-butene, i-1-hexene okanye i-1-octene, nazo zihlala zisetyenziselwa ukuphucula iipropati ze-polymer. Kwi-HDPE, umxholo wee-monomers ezimbalwa ezingentla ngokubanzi awudluli kwi-1%-2%. Ukongezwa kwee-comonomers kunciphisa kancinci i-crystallinity ye-polymer. Olu tshintsho luhlala lulinganiswa ngoxinano, kwaye uxinano luhambelana ngokuthe ngqo ne-crystallinity.
Enyanisweni, uxinano olwahlukeneyo lwe-HDPE luya kuvelisa umahluko omkhulu ekusebenzeni kweepallet zeplastiki ezenziweyo. Uxinano lwe-polyethylene ephakathi (MDPE) luqala kwi-0.926 ukuya kwi-0.940g/CC. Ezinye iindidi ngamanye amaxesha zihlela i-MDPE njenge-HDPE okanye i-LLDPE. Ii-Homopolymers zinoxinano oluphezulu, ukuqina, ukungangeni kakuhle kunye nendawo ephezulu yokunyibilika.
Ngokwesiqhelo kwinkqubo yokwenza iipalethi zeplastiki, ezinye izongezo zihlala zifuneka ukuqinisekisa ukusebenza okufunekayo. Ukusetyenziswa okukhethekileyo kufuna iifomyula ezizodwa zokongeza, njengokongeza ii-antioxidants ukuthintela ukubola kwe-polymer ngexesha lokucubungula kunye nokuthintela i-oxidation yemveliso egqityiweyo ngexesha lokusetyenziswa. Izongezo ze-antistatic zisetyenziswa kwiindidi ezininzi zokupakisha ukunciphisa ukunamathela kothuli kunye nokungcola kwiibhotile okanye ukupakisha.
Ukongeza, ukuqinisekisa umgangatho weepalethi zeplastiki, kufuneka kunikwe ingqalelo engakumbi ekupakishweni nasekugcinweni kwezinto eziluhlaza. Ngokwesiqhelo xa kugcinwa izinto zeHDPE, kufuneka zibe kude nemithombo yomlilo, zigqunywe nge-insulation, kwaye indawo yokugcina izinto kufuneka igcinwe yomile kwaye icocekile. Akuvumelekanga ngokupheleleyo ukuxuba naluphi na ukungcola, kwaye akuvumelekanga ngokupheleleyo ukuba kubekwe elangeni nasemvuleni. Ukongeza, ngexesha lokuthuthwa, kufuneka igcinwe kwinqwelo okanye kwikhabhathi ecocekileyo, eyomileyo negqunyiweyo, kwaye akufuneki kuvunyelwe izinto ezibukhali ezifana nezikhonkwane.
Ixesha leposi: Julayi-04-2025
