Ngokuqhelekileyo, i-yellowing yeemveliso zeplastiki kubangelwa ukuguga okanye ukuthotywa kwezinto.Ngokubanzi,PPkubangelwa kukwaluphala (ukuthotywa).Ngenxa yobukho bamaqela ecala kwi-polypropylene, ukuzinza kwayo akulungile, ngakumbi kwimeko yokukhanya.Ngokuqhelekileyo, i-stabilizer yokukhanya yongezwa.NgokoPE, kuba akukho siseko secala, azikho iimeko ezininzi zetyheli ekuqhubeni ngokubanzi okanye ukusetyenziswa kwangaphambili.I-PVCiya kuba tyheli, ehambelana ngokusondeleyo nefomula yemveliso.Ukuyibeka ngokucacileyo, i-oxidation.Umphezulu wamanye ama-masterbatches kulula ukuba i-oxidized, ngoko ke kuyimfuneko ukwenza unyango olungaphezulu kwi-masterbatches.
Ukongeza kwizongezo ezimbi kunye nokungcola kwinkqubo, ndicinga ukuba zibangelwa ikakhulu kukuguga.Ukongeza iinkqubo ezifanelekileyo ze-antioxidant kunye ne-anti ultraviolet agents kunokuphucula ukutyheli kwe-PE kunye ne-PP, kodwa ezininzi iinkqubo ezithinteleyo ze-phenolic antioxidant ngokwazo ziya kuzisa ukutyheli okuncinci.Ukongeza, ezinye iinkqubo ze-antioxidant kunye ne-anti ultraviolet agents zineempembelelo zokuxhathisa, ngoko qaphela xa uzisebenzisa.I-lubricant ye-polymer yongezwa ukwenza ifilimu ye-polymer fluoropolymer ehambayo kudonga lomatshini, ukuphucula ukusebenza kwe-extrusion processing, uxinzelelo lwe-extrusion kunye nobushushu bokusebenza kwe-polyolefin resin, ukuphucula umgangatho wemveliso kunye nemveliso, ukunciphisa iindleko zemveliso, ukunciphisa okanye ukuphelisa ukuphuka kwe-nyibilika, kunye nokunciphisa i-scrap. izinga.
1. Kukho i-raw material ebizwa ngokuba yi-plasticizer kwiimveliso zeplastiki, eyona nto idlala indima echasene nokuguga, kodwa iya kuguga emoyeni, ngoko xa i-plasticizer iyancipha, umbala uya kuphelelwa, kwaye ukuqina kweplastiki kuya kuncipha. , eya kwenza i-brittle kwaye iphuzi.
2. I-yellowing yeebhokisi zeplastiki emva kokuveliswa okanye ukusetyenziswa ixesha elide ngenxa yokuguga kwezinto ezisetyenzisiweyo, okanye inokuveliswa emva kokuthotywa.Eyona nto imbi kakhulu ziibhokisi zeplastiki ezimhlophe, ezinje ngeebhokisi ezimhlophe zentengiso kunye nemigqomo yeplastiki.
3. Isizathu esiqhelekileyo kukuguga kweemveliso zeplastiki.Isizathu kukuba i-polypropylene inokuhlaselwa kwecala eliphezulu.Ukuzinza kwayo akukuhle kakhulu, ngakumbi kwimeko yokumisa ixesha elide.
4. Ngoko ke, ukwenza iiplastiki ezimhlophe zihlala ixesha elide, zama ukuphepha ukukhanya okunamandla.Ukuba inxulumene nokutya, zama ukusebenzisa iiplastiki ezicacileyo nezingenambala.Ukuba ufuna ukuphelisa le nto, unokongeza inani elithile le-stabilizer egudileyo.
Ixesha lokuposa: Sep-09-2022