Ngokuzisa i-copolymerization yayo ye-monomer kwikhonkco eliphambili le-vinyl chloride, i-polymer entsha equkethe amakhonkco amabini e-monomer ifunyenwe, ebizwa ngokuba yi-copolymer.Iintlobo eziphambili kunye neepropathi ze-copolymers ze-vinyl chloride kunye nezinye ii-monomers zimi ngolu hlobo lulandelayo:
(1) i-vinyl chloride vinyl acetate copolymer: ukuqaliswa kwe-vinyl acetate monoma kunokudlala indima ye-plasticizer jikelele, oko kukuthi, okubizwa ngokuba "yi-plasticization yangaphakathi", enokuthintela ukuvela kwamanzi, ukufuduka, ukutsalwa kunye nezinye iintsilelo zeplastiki eziqhelekileyo. , kwaye inokunciphisa i-viscosity yokunyibilika, ukunciphisa ubushushu bokusebenza kunye nokuphucula ukusebenza.Ngokuqhelekileyo, umxholo we-vinyl acetate kwi-copolymer ngu-3 ~ 14%.
Izinto ezingalunganga eziphambili ze-vinyl chloride vinyl acetate copolymer kukunciphisa amandla e-tensile, ukushisa kwe-thermal deformation, ukumelana nokugqoka, ukuzinza kweekhemikhali kunye nokuzinza kwe-thermal.
⑵ I-vinyl chloride vinylidene chloride copolymer: iplastiki, ukuthambisa ubushushu, ukunyibilika kunye neplastiki ye-intramolecular ye-copolymer ngokusisiseko iyafana naleyo ye-vinyl chloride vinyl acetate copolymer.Ibonakaliswa ngamanzi aphantsi kunye nokuhanjiswa kwegesi, ukunyibilika okuphezulu kwi-ketone solvents, kunye nokuchasana nokuhlanjululwa kwe-aromatics, ngoko inokusetyenziswa ngokufanelekileyo kwiingubo.Ukongeza, isetyenziselwa ukwenza iifilimu ezinciphayo.Ngenxa yokunganyangeki kobushushu kunye nokuzinza kokukhanya xa kuthelekiswa ne-vinyl chloride vinyl acetate copolymer, kunye neendleko eziphezulu ze-monomer, ayisetyenziswanga ngokubanzi njenge-vinyl chloride vinyl acetate.
(3) i-vinyl chloride acrylate copolymer: impembelelo yangaphakathi yeplastiki ye-copolymer ilingana ne-vinyl chloride vinyl acetate, kunye nokuzinza okulungileyo kwe-thermal.Ingasetyenziselwa ukwenza iimveliso ezinzima kunye nezithambileyo, kunye nokuphucula ukuqhubekeka, ukuxhathisa impembelelo kunye nokumelana nokubanda.Ingasetyenziselwa ukugquma, ukudibanisa, njl.
(4) i-vinyl chloride maleate copolymer: umxholo we-maleate kule copolymer malunga ne-15%, kwaye umphumo wangaphakathi weplastiki ufana ne-vinyl chloride acrylate.Inokuqhubela phambili kakuhle.Ukuncitshiswa kweempawu ezibonakalayo kunye noomatshini kuncinci, kwaye ukuchasana nobushushu kuphezulu kunoko-copolymers jikelele.
(5) i-vinyl chloride olefin copolymer: i-copolymerization ye-ethylene, i-propylene kunye nezinye i-olefin monomers inokuvelisa i-copolymer resins kunye ne-fluidity egqwesileyo, ukuzinza kwe-thermal, ukuxhathisa impembelelo, ukungafihli, ukumelana nobushushu kunye nokunye.
Ukuguqulwa kwesisombululo sokudibanisa
Ukusonga i-graft reactive polymerization
Ukuguqulwa ngokwazisa ezinye ii-monomers kwikhonkco elisecaleni lePVC okanye i-vinyl chloride chain kumxokelelwane osecaleni weepolymers ezingafaniyo kuthiwa yi-graft reactive polymerization.
4. I-polymerization yobushushu obuphantsi
Ukutshintsha ilungiselelo lamakhonkco ekhonkco kwikhonkco eliphambili lePVC okanye ukutshintsha ilungiselelo phakathi kwamatyathanga ePVC kuthetha ukutshintsha indlela yepolymerization.Olu hlengahlengiso lubizwa ngokuba yipolymerization yobushushu obuphantsi.
Ixesha lokuposa: Jul-15-2022