izindaba

Njengomsebenzisi wesibili ngobukhulu we-titanium dioxide, imboni yepulasitiki iyinsimu ekhula ngokushesha eminyakeni yamuva, enesilinganiso sokukhula sonyaka esingu-6%.Phakathi kwamabanga angaphezu kuka-500 e-titanium dioxide emhlabeni, amabanga angaphezu kuka-50 anikezelwe kumapulasitiki.Ukusetshenziswa kwe-titanium dioxide emikhiqizweni yepulasitiki, ngaphezu kokusebenzisa amandla ayo aphezulu okucasha, amandla aphezulu e-achromatic nezinye izakhiwo ze-pigment, kungathuthukisa ukumelana nokushisa, ukumelana nokukhanya kanye nokumelana nesimo sezulu semikhiqizo yepulasitiki, ukuze imikhiqizo yepulasitiki ivikelwe Ukukhanya kwe-UV.Ukuhlasela, thuthukisa izakhiwo zikagesi kanye nemishini yemikhiqizo yepulasitiki.
Njengoba imikhiqizo yepulasitiki iminyene kakhulu kunopende noyinki, ayidingi umthamo omkhulu wokugxilisa izingulube, futhi inamandla okufihla aphakeme namandla aqinile okuthayela, futhi umthamo ojwayelekile ungama-3% kuya ku-5 kuphela%.Isetshenziswa cishe kuwo wonke amapulasitiki we-thermosetting kanye ne-thermoplastic, njenge-polyolefins (ikakhulukazi i-polyethylene ephansi kakhulu), i-polystyrene, i-ABS, i-polyvinyl chloride, njll. Ingaxutshwa ne-resin powder eyomile noma nge-additive.Isigaba soketshezi se-plasticizer siyaxutshwa, futhi ezinye zisetshenziswa ngemva kokucubungula i-titanium dioxide ibe yi-masterbatch.

Ukuhlaziywa kokusetshenziswa okuqondile kwe-titanium dioxide embonini yepulasitiki kanye nomkhakha we-masterbatch color

Iningi le-titanium dioxide yamapulasitiki linosayizi wezinhlayiyana ocishe ucoleke.Ngokuvamile, usayizi wezinhlayiyana ze-titanium dioxide zokumboza ngu-0.2 ~ 0.4μm, kuyilapho ubukhulu bezinhlayiyana ze-titanium dioxide kumapulasitiki buyi-0.15 ~ 0.3μm, ukuze kutholakale isizinda esiluhlaza okwesibhakabhaka.Ama-resin amaningi anesigaba esiphuzi noma ama-resin okulula ukuphuzi anomphumela wokufihla.

I-Titanium dioxide yamapulasitiki ajwayelekile ngokuvamile ayilashwa phezulu, ngoba i-titanium dioxide embozwe ngezinto ezingaphili njenge-alumina evamile ye-hydrated, lapho umswakama ohlobene ungama-60%, amanzi alinganisa i-adsorption angaba ngu-1%, lapho ipulasitiki incindezelwa ezingeni lokushisa eliphezulu. .Ngesikhathi sokucubungula, ukuhwamuka kwamanzi kuzodala ukuthi ama-pores avele endaweni ebushelelezi yepulasitiki.Lolu hlobo lwe-titanium dioxide ngaphandle kokumbozwa kwe-inorganic ngokuvamile kufanele lwenziwe i-organic surface (i-polyol, i-silane noma i-siloxane), ngoba i-titanium dioxide isetshenziselwa amapulasitiki.Ihlukile ku-titanium dioxide yokumbozwa, eyokuqala iyacutshungulwa futhi ixutshwe ku-low-polarity resin ngamandla okugunda, futhi i-titanium dioxide ngemva kokwelashwa kwe-organic surface ingahlakazeka kahle ngaphansi kwamandla afanele okugunda.

Ngokukhula okuqhubekayo kohla lwezicelo zemikhiqizo yepulasitiki, imikhiqizo eminingi yepulasitiki yangaphandle, njengeminyango namafasitela epulasitiki, izinto zokwakha kanye neminye imikhiqizo yepulasitiki yangaphandle, nayo inezidingo eziphakeme zokumelana nesimo sezulu.Ngaphezu kokusetshenziswa kwe-rutile titanium dioxide, ukwelashwa okungaphezulu kuyadingeka.Lokhu kwelashwa okungaphezulu ngokuvamile akufaki i-zinc, kuphela i-silicon, i-aluminium, i-zirconium, njll.I-Silicon inomphumela we-hydrophilic kanye ne-dehumidifying, engavimbela ukwakheka kwama-pores ngenxa yokuhwamuka kwamanzi lapho ipulasitiki ikhishwa ekushiseni okuphezulu, kodwa inani lalawa ma-ejenti okwelapha angaphezulu ngokuvamile aliningi kakhulu.