KunganiI-Disperant NNOumsebenzi?
I-Disperant NNOama-molecule aqukethe amaqembu okubambelela kanye nezingxenye zokuzinzisa. Iqhaza leqembu le-anchoring ukuhlinzeka ngamandla anele aqinile okubopha ezinhlayiyeni zokugcwalisa i-pigment. Ama-molecule ahlakazekayo awawi ebusweni bezinhlayiya, okuyimfuneko ukuze i-dispersant isebenze. Umsebenzi wengxenye yokusimamisa uwukuzinzisa izinhlayiya ze-pigment aggregate ezihlakazwa ngamandla omshini ngokusebenzisa i-electrostatic repulsion kanye nokumelana nendawo esigabeni soketshezi ukuvimbela izinhlayiya ukuthi zingahlangani.
Kumakhemikhali e-organic, lapho ingxenye ezinzile ye-I-Disperant NNOkuzinzisa izinhlayiya ze-pigment ezihlakazekile ngokuphikiswa kwendawo, lapho ukuhlukaniswa kwezinhlayiya ezihlakazekayo kuncane kunobukhulu beketanga le-solvent, i-solvent chain icindezelana futhi i-entropy iyancipha. Emanzini, i-ionization yenzeka eduze kwamaqembu e-ionic ukuze akhe ungqimba oluphindwe kabili, futhi ukuxoshwa kwe-electrostatic kuvimbela ukuhlangana kwezinhlayiyana. Uma i-polyether engeyona i-ionized izinzile, i-polyether igxilisa izinhlayiya ze-pigment ezihlakazekile ngokuphikiswa kwendawo.
Enkambweni yokwenziwa kwe-pulp kanye nephepha, inani elikhulu lama-dipersants amakhemikhali ephepha liyadingeka ukuze kuxazululwe izinkinga zokuhlakazeka, ukugcinwa, ukuhlunga nokunye. Ukwengeza ama-chemical dispersants ku-pulp kunganciphisa i-fiber winding futhi kwenze iphepha libushelelezi nokusebenza kahle. Ngokuvamile, izithasiselo zamakhemikhali zisetshenziselwa ukuhlunga kwe-pulp, njengokugeleza kwe-AIDS, izihlungi, izisabalalisi, ama-ejenti aqinisayo, ama-foaming agents, ama-preservatives, ama-enzyme e-biological, njll. Kulolu chungechunge lwamalungiselelo, amanye awodwa, amanye axutshwe, asebenzisana nomunye nomunye. ukuthuthukisa ikhwalithi yekhasi, ukuthuthukisa ngempumelelo ukukhiqiza, ukunciphisa izindleko zokukhiqiza.
I-Fiber iyisici esibalulekile esithinta ikhwalithi yephepha enqubweni yokwenza iphepha. Njengefayibha ende ukungahambisani kahle, ukwenza izithasiselo, izigcwalisi nokunye kude komunye nomunye, bese kuba nzima ukuthola ukusebenza okufanayo, amandla afanele wephepha. Nokho, ngokwengezwa kwe-dispersant efanele, ingaphezulu lezinhlayiya eziqinile zingakha isakhiwo se-bimolecular, futhi izinga lomswakama wezinhlayiya eziqinile lingathuthukiswa. Amanye ama-fiber dispersants amahle adinga indawo ethile ye-pyrolytic, engathuthukisa ukusebenza kahle kokuhlakazeka ngokukhuphuka kwezinga lokushisa. Bese wehlisa i-viscosity ye-pulp, uthuthukise ukushelela kwephepha nokuthambile.
Isikhathi sokuthumela: May-26-2022