litaba

Cellulose Acetate Butyrate, e khutsufalitsoeng e le CAB, e na le mokhoa oa lik'hemik'hale (C6H10O5) n le boima ba limolek'hule ba limilione. Ke phofo e tiileng e kang ntho e qhibilihang ka har'a metsoako e meng ea tlhaho, e kang acetic acid le acetic acid. Sollubility ea eona e eketseha ka mocheso o ntseng o eketseha. Cellulose acetate butyrate le eona e na le botsitso bo itseng ba mocheso 'me ha e bole habonolo mocheso oa kamore.

Cellulose Acetate Butyrate e na le thepa e ntle haholo joalo ka ho hanyetsa mongobo, ho hanyetsa UV, ho hanyetsa serame, ho feto-fetoha ha maemo, pepeneneng le ho kenya motlakase, 'me e lumellana hantle le li-resin le li-plasticizers tse phahameng tse belang. Lipolasetiki, li-substrates, lifilimi le liphahlo tse nang le thepa e fapaneng li ka etsoa ho latela litaba tse fapaneng tsa butyryl. E ka etsoa ka extrusion, ente molding, rotary molding, blowing, joalo-joalo, kapa ka ho belisa ho fafatsa. Ntle le lihlopha tsa hydroxyl le acetyl, cellulose acetate butyrate e boetse e na le lihlopha tsa butyryl, 'me thepa ea eona e amana le litaba tsa lihlopha tse tharo tse sebetsang. Sebaka sa eona sa ho qhibiliha le matla a matla a eketseha ka ho eketseha ha li-acetyl content, 'me ho lumellana ha eona le li-plasticizers le ho feto-fetoha ha filimi ho eketseha ka har'a mefuta e itseng ka ho fokotseha ha acetyl content. Keketseho ea litaba tsa hydroxyl e ka khothaletsa ho qhibiliha ha eona ho li-solvents tsa polar. Keketseho ea litaba tsa lihlopha tsa butyryl e fella ka ho fokotseha ha sekhahla le ho atoloha ha mefuta ea ho qhibiliha.

Tšebeliso ea Cellulose Acetate Butyrate

Cellulose Acetate Butyrate e sebelisoa e le sesebelisoa sa boemo bo holimo le ntho ea ho etsa lifilimi bakeng sa ho hlahisa pepenene e phahameng le li-substrates tsa polasetiki tse hanyetsanang le boemo ba leholimo, lifilimi le liphahlo tse fapaneng. Keketseho ea litaba tsa lihlopha tsa butyryl e fella ka ho fokotseha ha sekhahla le ho atoloha ha mefuta ea ho qhibiliha. E na le 12% ho 15% lihlopha tsa acetyl le 26% ho 29% lihlopha tsa butyryl. Lintho tse bonahalang kapa tse opaque granular, tse nang le sebopeho se thata le ho hanyetsa serame hantle. CAB e ka sebelisoa e le thepa e tala bakeng sa ho lokisoa ha li-substrates tsa lifilimi, li-substrates tsa ho nka lifoto tsa moeeng, lifilimi tse tšesaane, joalo-joalo E ka boela ea sebelisoa e le lisebelisoa tse tala bakeng sa ho tsamaisa liphaephe, lisebelisoa tsa lisebelisoa, lithapo, matšoao a ka ntle, mabokose a lisebelisoa, joalo-joalo. Ho phaella moo, e ka boela ea sebelisoa e le lisebelisoa tse tala bakeng sa ho hlahisa liphahlo tse peelable, li-insulation coatings, liphahlo tse hanyetsanang le boemo ba leholimo tse phahameng, le likhoele tsa maiketsetso.

Litšobotsi tsa cellulose acetate butyrate

Cellulose acetate butyrate e na le litšobotsi tse ikhethang tse etsang hore e tsejoe haholo lits'ebetsong. Taba ea pele, e na le solubility e ntle le adsorbability, 'me e ka tsoakoa ka botlalo le lisebelisoa tse ling ho fihlela ts'ebetso e nepahetseng ea ts'ebetso. Taba ea bobeli, cellulose acetate butyrate e na le thepa e ntle ea ho monya le ho nosetsa, e ka bolokang mongobo le botsitso ba thepa ka nepo. Ntle le moo, e boetse e na le biocompatibility e ntle mme e ke ke ea ba le litlamorao tse mpe 'meleng oa motho kapa tikolohong.

Tlhahiso ea tšebeliso ea cellulose acetate butyrate

Ha u sebelisa cellulose acetate butyrate, ho na le litlhahiso le litemoso tse ka thusang ho sebelisa ts'ebetso ea eona ka botlalo. Taba ea pele, cellulose acetate butyrate e lokela ho omisoa pele e sebelisoa ho ntlafatsa ho qhibiliha ha eona le botsitso. Ea bobeli, nakong ea ts'ebetso, mocheso o phahameng le maemo a acidic a lokela ho qojoa ho thibela ho bola le ho senyeha ha selulose. Ho feta moo, melao le melao e amehang e tlameha ho lateloa nakong ea ts'ebeliso ho netefatsa ho latela melao le polokeho ea thepa.

Mokhoa oa ho ahlola boleng ba cellulose acetate butyrate

Boleng ba cellulose acetate butyrate bo ka ahloloa ho latela lintlha tse latelang. Ntlha ea pele, e ka khethoa ka ho hlahloba hore na ponahalo ea eona e omme ebile ha e na litšila tse totobetseng. Ea bobeli, ho qhibiliha ha eona le botsitso ba eona ho ka lekoa, 'me boleng bo phahameng ba cellulose acetate butyrate bo lokela ho ba le solubility e ntle le botsitso ba mocheso. Ho feta moo, hoa khoneha ho bua ka botumo le boemo ba setifikeiti sa barekisi le ho khetha barekisi ba tšepahalang le ba nang le litsebo ho netefatsa boleng ba sehlahisoa le ho tšepahala.

Indasteri ea Unilong e ikemiselitse ho etsa lipatlisiso tsa li-cellulose esters 'me ke mofani oa lefats'e oa lihlahisoa tsa CAB le CAP. E ka hlahisa lithane tse 4000 tsa cellulose acetate propionate (CAP) le cellulose acetate butyrate (CAB) selemo le selemo, 'me e sebelisoa haholo ha ho etsoa lihlahisoa tse tsoang linaheng tse ling tse kang liphahlo, liphutheloana tsa lijo, lipapali tsa bana, lisebelisoa tsa bongaka, joalo-joalo.