Ibicuruzwa bya selile bikomoka kumpamba karemano cyangwa ibiti bya etherification. Ibicuruzwa bitandukanye bya selile ikoresha ibikoresho bitandukanye bya etherifying. Hypromellose HPMC ikoresha ubundi bwoko bwa etherifyinga (chloroform na 1,2-epoxypropane), mugihe hydroxyethyl selulose HEC ikoresha Oxirane etherifyinging. Hydroxyethyl selulose irashobora gukoreshwa nkibyimbye mu irangi ryamabuye nyayo no gusiga irangi. Kubera ubwinshi bwa rusange, uburemere bwihariye, imvura igwa, ikeneye kongeramo umubyimba kugirango yongere ubwiza bwayo, kugirango ihuze ibikenewe byubwubatsi bwa spray, kandi itezimbere ububiko bwayo, kandi igere ku mbaraga runaka. Kugirango ugere ku mbaraga nziza, kurwanya amazi meza no guhangana nikirere, guhitamo ibikoresho fatizo nigishushanyo mbonera ni ngombwa cyane.
Muri rusange, ubwinshi bwubwiza buhanitse bwo gusiga irangi amabuye azaba menshi. Kurugero, toni y irangi ryamabuye nyayo irashobora kuba irimo kg 300 ya emulion yera ya acrylic na kg 650 yumucanga wamabuye asanzwe. Iyo ibirimo bikomeye bya emulsiyo ari 50%, ingano ya kg 300 emulsiyo nyuma yo gukama ni litiro 150, 650 Kg yumucanga ni litiro 228. Nukuvuga ko, muriki gihe PVC (ubunini bwibintu bya pigment) yibara ryukuri ryamabuye ni 60%, kubera ko ibice byumucanga wamabara ari binini kandi bidasanzwe muburyo, ukurikije uko ingano yagabanijwe, nyuma yo gukama irangi ryamabuye rishobora kuba muri CPVC (ubunini bwa pigment yibintu) hafi. Kubyimbye, niba hatoranijwe neza neza ya selile, hashobora gukorwa firime yuzuye kandi yuzuye kugirango ihuze ibyifuzo bitatu byingenzi byerekana irangi ryamabuye. Niba ibikubiye muri emulion ari bike, birasabwa gukoresha ububobere buke bwa selilose nkibyimbye (urugero: 100.000 viscosity), cyane cyane nyuma yigiciro cya selile yiyongereye, gishobora kugabanya ingano ya selile yakoreshejwe, nayo irashobora kureka imikorere y'irangi ryamabuye nyayo irarenze. Bamwe mubakora amarangi make yamabara asize amarangi yasimbuye hydroxyethyl selulose na hypromellose kubera ikiguzi nibindi bitekerezo. Ugereranije nubwoko bubiri bwa selile, hydroxyethyl selulose ifite ubushobozi bwiza bwo gufata amazi, ntibutakaza ubushobozi bwo gufata amazi kubera gel mubushyuhe bwinshi, kandi ifite imbaraga zo kurwanya indwara. Kugirango imikorere ikorwe, birasabwa gukoresha 100.000 viscosity hydroxyethyl selulose nkibyimbye byamabara nyayo.
Igihe cyoherejwe: Nyakanga-24-2023