Ukubaluleka kokuhlakazeka kwe-pigment kumbala wepulasitiki

Ukuhlakazwa kwezingulube kubaluleke kakhulu ekubaleni amapulasitiki.Umphumela wokugcina weumbalaukuhlakazeka akuthinti kuphela amandla okuthayela kwe-pigment, kodwa futhi kuthinta ukubukeka komkhiqizo onemibala (njengamabala, ama-streaks, i-gloss, umbala nokucaca), futhi kuthinta ngokuqondile ikhwalithi yomkhiqizo onemibala, njengamandla, ubude, ukumelana komkhiqizo.Ukuguga nokumelana nokumelana, njll., nakho kuthinta ukusebenza kokucubungula nokusebenza kokusetshenziswa kwamapulasitiki (okuhlanganisa nombalamasterbatch).

I-dispersibility of pigments in plastics ibhekisela emandleni ombala wokunciphisa usayizi wama-aggregates nama-agglomerates kusayizi oyifunayo ngemva kokumanzisa.Cishe zonke izakhiwo ze-pigments ekusetshenzisweni kwepulasitiki zisekelwe ezingeni lapho ama-pigments angahlakazeka kahle.Ngakho-ke, i-dispersibility of pigments iyinkomba ebaluleke kakhulu yohlelo lokusebenzaumbala wepulasitiki.

Enqubweni yokukhiqizwa kwe-pigment, i-crystal nucleus iqala ukwakhiwa.Ukukhula kwe-crystal nucleus kuyikristalu eyodwa ekuqaleni, kodwa ngokushesha ikhula ibe i-polycrystal enesakhiwo se-mosaic.Yiqiniso, izinhlayiya zayo zisalungile, futhi usayizi womugqa wezinhlayiya cishe u-0.1 kuya ku-0.5 μm, ngokuvamile obizwa ngokuthi izinhlayiya eziyinhloko noma izinhlayiya eziyinhloko.Izinhlayiya eziyinhloko zivame ukuhlangana, futhi izinhlayiya ezihlanganisiwe zibizwa ngokuthi izinhlayiya zesibili.Ngokwezindlela ezihlukene zokuhlanganisa, izinhlayiya zesibili zihlukaniswa ngokwejwayelekile zibe izigaba ezimbili: eyodwa ukuthi amakristalu axhunywe imiphetho yekristalu noma ama-engeli, ukukhangana phakathi kwamakristalu kuncane kakhulu, izinhlayiya zikhululekile, futhi zihlukaniswa kalula ukuhlakazeka, okubizwa ngokuthi okunamathiselwe.Ukuhlanganisa;olunye uhlobo, amakristalu ahlanganiswe izindiza ze-crystal, amandla akhangayo phakathi kwamakristalu aqinile, izinhlayiya ziqinile, ezibizwa ngokuthi ama-aggregates, indawo ephelele ye-aggregates ingaphansi kwesamba sezindawo ezingaphezulu zezinhlayiya zazo, futhi ama-aggregate ancike ezinqubweni zokusabalalisa ezijwayelekile.Kucishe kube nzima ukuhlakazeka.