Umthelela we-Resin Stability
I-PVC resin iyinto engezwani nokushisa, futhi kuneziphambeko eziningi esakhiweni sayo samangqamuzana, njengamabhondi aphindwe kabili, amaqembu e-Allyl, amaqembu okuphela komqalisi asele, njll. Ngokusho kwendlela yama-radicals mahhala, lezi ziphambeko zenziwa zisebenze kalula ngokushisa futhi ukukhanya ukwakha ama-radicals mahhala.Ngaphansi kwesenzo sama-radicals wamahhala, i-polyvinyl chloride idlula i-dehydrochlorination kanye nokuwohloka ngokuya ngomshini wamaketanga.Ukusabela okuqhubekayo kwe-dehydrochlorination kukhiqiza ukulandelana kwe-polyene yamabhondi ahlanganisiwe aphindwe kabili ochungechungeni oluyinhloko lwe-molecule ye-polyvinyl chloride, okuyisakhiwo se-chromogenic.Uma nje inani lezibopho eziphindwe kabili ezihlanganisiwe lifinyelela ku-5 ~ 7, i-polyvinyl chloride iqala i-Discoloration, lapho idlula i-10, iphenduka ibe phuzi, ukulandelana okuhlanganisiwe kuyaqhubeka nokukhula, futhi umbala we-polyvinyl chloride uya ujula kancane kancane, futhi ekugcineni ube nsundu noma ngisho emnyama.Ukugcina ukuzinza kwe-PVC emazingeni okushisa okucubungula kuyisisekelo sawo wonke umsebenzi we-toning nomhlophe.
Umphumela wezinga lokushisa
Amaphrofayili epulasitiki e-PVC enziwe ngepulasitiki futhi akhiwe ekushiseni kwe-185 ~ 195 ° C, futhi isikhathi sokushisa side njengemizuzu embalwa, okudinga i-pigments kanye nezikhanyisi ezisetshenziselwa ukuba nokusimama okuphezulu kokushisa.I-rutile titanium dioxide, isakhiwo sayo se-crystal yi-cube, ama-athomu e-Ti nama-athomu e-O ahlelwe eduze, isakhiwo se-crystal sizinzile kakhulu, futhi singakwazi ukugcina ukuzinza kwesakhiwo nokusebenza ngaphansi kokushisa kokucubungula kwamaphrofayili e-PVC;I-ultramarine iyi-aluminium silicate.Izinhlanganisela eziqukethe isibabule, ukumelana nokushisa nakho kuhle kakhulu.Kodwa-ke, kuma-ejenti amhlophe e-fluorescent, izinhlobo ezahlukene zama-ejenti amhlophe e-fluorescent nazo zinokuhluka ekusebenzeni kwazo kokumelana nokushisa.
Umphumela we-Acid
Inqubo yokucubungula ye-PVC ihlale ihambisana nokubola kwama-molecule e-PVC, futhi inani elikhulu le-hydrogen chloride likhiqizwa phakathi nenqubo yokubola.Igesi ye-Hydrogen chloride emazingeni okushisa aphezulu idla kakhulu futhi ine-asidi.Phakathi kwezinto ezintathu ezingenhla, i-TiO2 inokumelana nokugqwala kwe-asidi okuphezulu kakhulu, kulandelwa ama-ejenti amhlophe e-fluorescent, futhi i-ultramarine eluhlaza okwesibhakabhaka yimbi kakhulu (endaweni ene-acidic, i-ultramarine eluhlaza okwesibhakabhaka iyashintsha isuka eluhlaza okwesibhakabhaka iye kokumhlophe futhi ikhiqize amabhamuza amakhulu kakhulu).Isizathu sokuthi kungani i-ultramarine eluhlaza okwesibhakabhaka isasetshenziswa ekwakhiweni kwephrofayili esikhundleni se-phthalocyanine eluhlaza okwesibhakabhaka enokumelana ne-asidi okungcono kakhulu kungenxa yokuthi amandla okuthayela e-phthalocyanine eluhlaza okwesibhakabhaka aqine kakhulu, cishe izikhathi ezingu-20~40 kune-ultramarine eluhlaza okwesibhakabhaka.Umthamo wokuhlanganisa we-mixer, inani elingeziwe le-ultramarine eluhlaza okwesibhakabhaka esilinganisweni ngasinye lingu-5 ~ 20g kuphela.Uma ithathelwa indawo nge-phthalocyanine eluhlaza okwesibhakabhaka, inani elingeziwe lincane kakhulu, futhi iphutha lokulinganisa likhulu kakhulu, okuzokwenza ukuthi kuvele amaqoqo amaphrofayili.I-chromatic aberration enkulu.
Umphumela wama-adjuvants
Imishini yokukhiqiza nobuchwepheshe bamaphrofayili epulasitiki e-PVC ezweni lami angeniswa kakhulu evela eYurophu nase-United States.Kusenenani elithile lomthofu kuwo.Isibabule esiqukethwe ku-ultramarine eluhlaza okwesibhakabhaka singase sihlanganyele nomthofu kusinzinzisi, okuholela kumaphrofayili angcoliswe yi-black lead sulfide.
Umphumela womthamo we-brightener
I-Titanium dioxide iyisisekelo se-toning kanyeukwenza mhlopheyamaphrofayili e-PVC amhlophe.Njengoba inani le-titanium dioxide landa, ubumhlophe bomkhiqizo buyanda.
Ngaphezu kwalokho, njenge-ejenti eyisivikelo ye-UV eyinhloko ekwakhiweni kwezinto ezinephrofayili, umthamo we-titanium dioxide nawo unezidingo ezithile.Ngokuvamile, umthamo we-titanium dioxide kufanele ufinyelele ku-4 ~ 8phr.
I-Ultramarine eluhlaza okwesibhakabhaka isetshenziselwa "ukumboza okuphuzi" ukuze kufezwe injongo yokuba mhlophe.Uma umthamo umncane kakhulu, umphumela wokuba mhlophe awumuhle.Uma umthamo mkhulu kakhulu, kulula ukwenza okokusebenza okunephrofayili kubonakale kuluhlaza okwesibhakabhaka futhi kukhiqize i-lead sulfide eningi, ethinta isicwebezelisi esingaphezulu sempahla ephrofayili.Ngakho-ke, umthamo wayo uvame ukulawulwa ukuthi ube ngu-0.5% wesilinganiso se-titanium dioxide.
I-Fluorescent whitening agentsingakwazi ukumunca ngokuphumelelayo imisebe ye-ultraviolet yobude obuthile begagasi futhi iyikhiphe ngendlela yokukhanya okubonakalayo.Ngokukhula kwenani le-agent emhlophe ye-fluorescent, ubumhlophe bomkhiqizo buyanda;kodwa lapho i-ejenti emhlophe ye-fluorescent ifinyelela ekugxiliseni okuthile, ukuqhubeka nokwandisa inani akunawo umthelela obalulekile ekubamhlophe kwamaphrofayili e-PVC, futhi ngezinye izikhathi kuyehla, futhi inani likhulu.Umthelela ekusebenzeni kokucubungula kanye nezakhiwo ezingokomzimba nezomshini zezinto eziphrofayili kufanele zibhekwe.
Isikhathi sokuthumela: Mar-26-2022