I-Fluorescent whitening agent iwuhlobo lwenhlanganisela yezinto eziphilayo ezingathuthukisa ubumhlophe bendwangu yefayibha nephepha, eyaziwa nangokuthi i-optical whitening agent kanye ne-fluorescent whitening agent.Izindwangu, njll. zivame ukuphuzi ngenxa yokufakwa kokungcola okunemibala, futhi ukukhishwa kwamakhemikhali kwasetshenziswa ukuze kukhishwe umbala esikhathini esidlule.Indlela yokwengeza i-ejenti emhlophe emkhiqizweni manje isiyemukelwa, futhi umsebenzi wayo ukuguqula imisebe ye-ultraviolet engabonakali emuncwe umkhiqizo ibe imisebe ye-blue-violet fluorescent, ehambisana nemisebe yokukhanya ephuzi yasekuqaleni futhi iba ukukhanya okumhlophe, okuyinto kuthuthukisa ikhono lomkhiqizo lokumelana nokukhanya kwelanga.lobumhlophe.Ama-brighteners asetshenziswe kakhulu ezindwangu, iphepha, impushana yokuwasha, insipho, irabha, amapulasitiki, izingulube nopende.
Ama-Brighteners wonke anezinhlelo ezihlanganisiwe ze-cyclic esakhiweni samakhemikhali, njengalezi: okuphuma kwe-stilbene, okuphuma kwe-phenylpyrazoline, okuphuma kwe-benzothiazole, okuphuma ku-benzimidazole, okuphuma kwe-coumarin nokuphuma kwe-Naphthalimide, njll., okuphuma kuyo okukhulu kunakho konke okutholakalayo.Sebenzisa izindlela nezakhiwo ukuhlukanisa izibani zingahlukaniswa zibe izinhlobo ezine:
Uchungechunge lubhekisela kuma-ejenti amhlophe e-fluorescent angakhiqiza ama-cation ngesisombululo esinamanzi.Ifanele ukwenziwa mhlophe kwemicu ye-acrylic.I-B series optical brighteners ifanele ukugqamisa imicu ye-cellulose.Uchungechunge lwe-C lubhekisela ohlotsheni lwe-ejenti emhlophe ye-fluorescent ehlakazekile ekugezeni kukadayi phambi kwe-disperant, elungele ukwenza mhlophe i-polyester neminye imicu ye-hydrophobic.Uchungechunge lwe-D lubhekisela kumenzeli omhlophe we-fluorescent ofanele i-protein fiber nenylon.Ngokusho kwesakhiwo samakhemikhali, ama-ejenti amhlophe angahlukaniswa ngezigaba ezinhlanu: ① uhlobo lwe-stilbene, olusetshenziswa ku-cotton fiber kanye neminye imicu yokwenziwa, ukwenza amaphepha, ukwenza insipho nezinye izimboni, nge-fluorescence eluhlaza okwesibhakabhaka;② uhlobo lwe-coumarin, olunephunga elimnandi Isakhiwo esiyisisekelo se-ketone kabhontshisi, esetshenziswa kumapulasitiki e-polyvinyl chloride, njll., sine-fluorescence eluhlaza okwesibhakabhaka eqinile;③ uhlobo lwe-pyrazoline, olusetshenziselwa uvolo, i-polyamide, imicu ye-acrylic neminye imicu, ene-fluorescence eluhlaza;④ uhlobo lwe-benzoxazine, olunemicu ye-acrylic namanye amapulasitiki njenge-polyvinyl chloride ne-polystyrene, ine-fluorescence ebomvu;Uhlobo lwe-⑤phthalimide, lwe-polyester, i-acrylic, inayiloni neminye imicu, ene-fluorescence eluhlaza okwesibhakabhaka.Okungenhla ukuhlukaniswa kwama-ejenti amhlophe.Uma amakhasimende ekhetha ama-ejenti amhlophe, kufanele aqale aqonde imikhiqizo yawo, ukuze akwazi ukukhetha i-ejenti emhlophe efanele.Futhi amakhasimende kufanele azi futhi ukuthi uma kusetshenziswa ama-ejenti amhlophe, ama-ejenti amhlophe akhanya ngemibala ekhanyayo kuphela nemibala ehambisanayo, futhi awakwazi ukumiselela ukushisisa kwamakhemikhali.Ngakho-ke, indaba enemibala iphathwa ngokuqondile nge-ejenti emhlophe ngaphandle kwe-bleaching, futhi umphumela omhlophe awukwazi ukutholakala ngokuyisisekelo.Futhi i-ejenti emhlophe ayimhlophe kakhulu, kodwa inokugxila kokugcwala okuthile.Ukweqa inani elithile elinqunyiwe lomkhawulo, hhayi nje kuphela ukungabi mhlophe, kodwa futhi nokuphuzi.
Isikhathi sokuthumela: Jan-24-2022