Stearic acid, kapa octadecanoic acid, formula ea molek'hule C18H36O2, e hlahisoa ke hydrolysis ea mafura le oli 'me e sebelisoa haholo-holo tlhahiso ea stearates. Grama e 'ngoe le e 'ngoe e qhibiliha ka 21ml ethanol, 5ml benzene, 2ml chloroform kapa 6ml carbon tetrachloride. Ke boka bo bosoeu bo bonaletsang bo tiileng kapa bo tšehla hanyenyane, bo ka qhalakanngoa ho ba phofo, hanyenyane ka monko oa botoro. Hajoale, boholo ba tlhahiso ea malapeng ea likhoebo tse nang le asiti ea stearic li romelloa kantle ho naha ho tsoa kantle ho oli ea palema, hydrogenation ho oli e thata, ebe hydrolysis distillation ho etsa asiti ea stearic.
Asiti ea Stearic e sebelisoa haholo ho litlolo, li-plasticizers tsa polasetiki, li-agents tsa hlobo, li-stabilizers, li-surfactants, li-accelerator tsa rabara, li-repellents tsa metsi, li-agent tsa polishing, sesepa sa tšepe, mahlahana a tšepe a liminerale, li-softeners, meriana le lik'hemik'hale tse ling tse phelang. Asiti ea Stearic e ka boela ea sebelisoa e le motsoako oa li-pigment tse qhibilihang ka oli, mochini o thellang oa krayone, mochini oa ho bentša pampiri ea boka, le emulsifier bakeng sa glycerol stearate. Asiti ea Stearic e boetse e sebelisoa haholo ha ho etsoa liphaephe tsa polasetiki tsa PVC, lipoleiti, profiles le lifilimi, 'me ke mocheso o tsitsitseng bakeng sa PVC ka lubricity e ntle le khanya e ntle le botsitso ba mocheso.
Mono- kapa polyol esters ea stearic acid e ka sebelisoa e le litlolo, li-non-ionic surfactants, li-plasticisers joalo-joalo. Letsoai la eona la tšepe la alkali le qhibiliha ka metsing 'me ke e' ngoe ea likarolo tse ka sehloohong tsa sesepa, ha matsoai a mang a tšepe a ka sebelisoa e le lintho tse lelekang metsi, litlolo, li-fungicides, li-additives tsa pente le li-stabiliser tsa PVC.
Karolo ea asiti ea stearic linthong tsa polymeric e bontšoa ke bokhoni ba eona ba ho matlafatsa botsitso ba mocheso. Lisebelisoa tsa polymer li na le tšekamelo ea ho senyeha le ho oxidation nakong ea ts'ebetso ea mocheso o phahameng, e leng se lebisang ho fokotseha ha tshebetso. Ho eketsoa ha acid ea stearic ho ka fokotsa ka katleho ts'ebetso ena ea ho senyeha le ho fokotsa ho robeha ha liketane tsa limolek'hule, kahoo ho lelefatsa bophelo ba tšebeletso ea thepa. Sena ke sa bohlokoa ka ho khetheha ha ho etsoa lihlahisoa tse hanyetsanang le mocheso o phahameng joalo ka terata le likarolo tsa likoloi.
Stearic acid e na le thepa e ntle ea ho tlotsa joalo ka setlolo. Ka thepa ea polymer, asiti ea stearic e fokotsa likhohlano lipakeng tsa liketane tsa limolek'hule, e lumella thepa hore e phalle habonolo, ka hona e ntlafatsa ts'ebetso ea ts'ebetso. Sena se molemo haholo bakeng sa lits'ebetso tsa tlhahiso joalo ka ho bopa ente, extrusion le calendering.
Asiti ea Stearic e bonts'a phello ea polasetiki ka thepa ea polymeric, e eketsang bonolo le ho senyeha ha thepa. Sena se etsa hore thepa e be bonolo ho bopeha hore e be libopeho tse fapaneng, ho kenyeletsoa lifilimi, li-tubes le profiles. Phello ea polasetiki ea asiti ea stearic hangata e sebelisoa ha ho etsoa liphutheloana tsa polasetiki, mekotla ea polasetiki le lijana tsa polasetiki.
Lisebelisoa tsa polymeric hangata li na le tšekamelo ea ho monya metsi, tse ka senyang thepa ea tsona le ho baka kutu. Ho eketsoa ha asiti ea stearic ho ntlafatsa phepelo ea metsi ea thepa, ho e lumella hore e lule e tsitsitse libakeng tse mongobo. Sena se bohlokoa haholo libakeng tse kang lihlahisoa tsa kantle, thepa ea kaho le matlo a lisebelisoa tsa elektroniki.
Stearic acid e thusa ho fokotsa phetoho ea 'mala oa thepa ea polymeric ho UV le tikoloho ea mocheso. Sena ke sa bohlokoa ha ho etsoa lihlahisoa tse tsitsitseng ka mebala tse kang liboto tsa ka ntle, likarolo tsa ka hare tsa likoloi le thepa ea ka ntle.
Asiti ea Stearic e sebetsa joalo ka sekhomaretsi le thuso ea phallo linthong tsa polymeric. E fokotsa ho khomarela pakeng tsa limolek'hule 'me e etsa hore thepa e phalle habonolo, haholo-holo nakong ea ho etsoa ha ente. Sena se ntlafatsa tlhahiso le ho fokotsa mefokolo sehlahisoa.
Asiti ea Stearic e sebelisoa e le moemeli oa anti-caking ha ho etsoa manyolo a kopantsoeng ho etsa bonnete ba ho hasana ha likaroloana tsa manyolo. Sena se thusa ho ntlafatsa boleng le ho tšoana ha manyolo le ho netefatsa hore limela li fumana limatlafatsi tse nepahetseng.
Stearic acid e sebelisoa mefuteng e mengata e fapaneng ea lits'ebetso tsa indasteri le tsa bareki.
Nako ea poso: Jun-05-2024
