IUmbhobho wePVCukuqulunqwa kuqulethe: i-PVC resin, isilungisi sempembelelo, isizinzi, isilungisi sokulungisa, isihlungi, i-pigment kunye ne-lubricant yangaphandle.
1. PVC resin
Ukuze ufumane iplastiki ekhawulezayo kunye nefanayo, indlela yokumiswa kufuneka isetyenziswe ukukhulula i-resin.
——I-resin esetyenziselwa imibhobho enodonga oluphindwe kabini kufuneka ibe nokuhanjiswa kakuhle kobunzima bemolekyuli kunye nomxholo wokungcola, ukuze kuncitshiswe “iliso lentlanzi” kumbhobho kwaye ugweme ukudilika kokonakala kombhobho kunye nokugqabhuka kodonga lombhobho.
——I-resin esetyenziselwa imibhobho yonikezelo lwamanzi kufuneka ibe “yenqanaba lococeko”, kwaye i-vinyl chloride eseleyo kwi-resin kufuneka ibe phakathi kwe-1 mg/kg.Ukuze kuqinisekiswe umgangatho wombhobho kunye nokunciphisa izinga eliphosakeleyo, umthombo we-resin kufuneka uzinzile.
2. Isizinzi
Okwangoku, ezona zinzisi zobushushu zisetyenziswa eTshayina zezi: iisepha zentsimbi, izizinzisi zetyuwa ezidityanisiweyo, izizinzisi ezinqabileyo zomhlaba, kunye nezizinzisi ze-organic tin.
I-Stabilizers equkethe isinyithi esinzima (njenge-Pb, i-Ba, i-Cd) iyingozi kwimpilo yabantu, kwaye i-dosage yezi zinzisi ekuqulunqweni kwemibhobho yokuhambisa amanzi ilinganiselwe.Kwinkqubo ye-screw extrusion enye, imbali yokufudumeza kwezinto ide kunenkqubo ye-twin-screw extrusion, kwaye inani le-stabilizer yangaphambili linyuka ngaphezu kwe-25%.Ubushushu bentloko yombhobho obiyelwe kabini eludongeni luphezulu, izinto zihlala entloko ixesha elide, kwaye inani lokuzinzisa kwifomula lingaphezulu kwefomula yombhobho eqhelekileyo.
3. Isigcwalisi
Indima yabafakeli kukunciphisa iindleko.Zama ukusebenzisa i-ultra-fine esebenzayo yokugcwalisa (ixabiso eliphezulu).Ubungakanani bempahla yombhobho bukhulu kuneeprofayili.Ubuninzi obugqithisileyo bokugcwalisa kuya kubangela ukuba ukuchasana kwempembelelo kunciphise kwaye ukunyanzeliswa koxinzelelo lombhobho ukunciphisa.Ngoko ke, kwimibhobho yeekhemikhali kunye nemibhobho yokubonelela ngamanzi, inani lokuzalisa kwiikopi ezingaphantsi kwe-10.Ubungakanani bokugcwalisa kumbhobho wokucoca kunye nomkhono owenziwe ngokubanda owenziwe ngokubanda unokuba ngaphezulu, kwaye inani le-CPE linganyuswa ukutshintsha ukuhla kwempembelelo yokusebenza.
Kwiimibhobho ezineemfuno ezisezantsi zokusebenza kombhobho, kunye nemibhobho yemvula, inani lokuzalisa linokuba likhulu, kodwa ukunxiba kwe-twin-screw extruder kunzulu.
4. Isilungisi
(1) Isilungisi sokulungisa: imibhobho eqhelekileyo ingasetyenziswa ngaphantsi okanye hayi;imibhobho ethathiweyo kunye nemibhobho ebhityileyo isetyenziswa kakhulu.
(2) Isilungisi sempembelelo: idosi encinci kuneeprofayili, ngenxa yezizathu ezibini: 1. Ukusebenza, ukumelana nobushushu obuphantsi, amandla okuqina 2. Iindleko
(3) Ezinye izongezo, imibala, njl.: Xa iphrofayili isetyenziswe njenge-anti-aging agent, i-titanium dioxide kufuneka yongezwe.Ifomula yombhobho oqinileyo wePVC ubukhulu becala i-pigment, ikakhulukazi i-titanium dioxide okanye i-carbon black, enokuthi ikhethwe ngokweemfuno zembonakalo yombhobho.
5. Ukudibanisa i-lubricant yangaphandle kunye ne-stabilizer
(1) Khetha i-lubricant yangaphandle ehambelanayo ngokwe-stabilizer
a.I-Organotin stabilizer.I-organic tin stabilizer inokuhambelana kakuhle kunye ne-PVC resin, kwaye inotyekelo olunzima lokunamathela kudonga lwentsimbi.Esona sithambiso sangaphandle sinexabiso eliphantsi esihambelana nayo yiparafini esekwe yiparafini-calcium stearate system.
b.Lead ityuwa stabilizer.I-Lead stabilizer yetyuwa inokuhambelani kakubi kunye ne-PVC resin, kwaye inamathele kuphela kumphezulu we-PVC, ethintela ukudibanisa phakathi kweengqungquthela ze-PVC.Ngesiqhelo, isithambiso sangaphandle se-lead stearate-calcium stearate sisetyenziswa ukuyifanisa.
(2) Isixa se-lubricant yangaphandle.Ukuba ukulungelelaniswa kwexabiso le-lubricant yangaphandle ayikakwazi ukuhlangabezana neemfuno zokulungiswa kwezinto, unokuqwalasela ukongeza inani elincinci le-lubricant yangaphakathi.Xa impembelelo ye-toughening modifier isetyenzisiweyo, ngenxa ye-viscosity ephezulu yokunyibilika, ukukwazi ukunamathela kumphezulu wesinyithi kuphezulu, kwaye inani le-lubricant yangaphandle lifuna ukwandiswa;Umbhobho onodonga olungqingqwa ufuna i-lubricant yangaphandle.Xa ubushushu bokusebenza buphezulu, ukuthambekela kokunyibilika ukunamathela kumphezulu wesinyithi kuphezulu, kwaye zongezwa ngakumbi iilubricants zangaphandle.
Yenziwa Njani Imibhobho yePVC?
Imibhobho ye-PVC yenziwa ngokukhutshwa kwezinto ezikrwada zePVC, kwaye ngokubanzi ilandela amanyathelo afanayo okwenziwa kombhobho oqhelekileyo wokukhupha:
- Ukutya iipeliti zezinto ezikrwada / umgubo kwi-PVC twin screw extruder
- Ukunyibilika kunye nokufudumeza kwiindawo ezininzi ze-extruder
- Ukukhupha ngedayisi ukumila kumbhobho
- Ukupholisa umbhobho omile
- Ukusika imibhobho yePVC ukuya kubude obufunwayo
Ixesha lokuposa: Jul-04-2022