stabilizer e khanyang
Li-stabilizers tsa mabone li sebelisoa ho sireletsa lipolasetiki le lisebelisoa tse ling hore li se senyehe-ho pepesehetse mahlaseli a ultraviolet nako e telele. Ho pepesetsoa ha polasetiki mahlaseling a mahlaseli a kotsi a letsatsi ho qala ho senyeha ka mokhoa oa photooxidation. Sena se ka ba le liphello tse ngata tse sa rateheng tse kenyeletsang liphetoho ponahalong (ho fetoha ha mebala, ho fetoha ha khanya le / kapa ho chekoa), ho fokotseha ha thepa ea mechine le ho thehoa ha likoli tse bonahalang tse kang mapetsong. Mabone a fluorescent a sebelisetsoang mabone a ka tlung a boetse a ntša mahlaseli a UV, empa maemong a tlase haholo ho feta khanya ea letsatsi.
Joalo ka taba ea oxidation ea mocheso, photooxidation ke ts'ebetso ea ketane e kenyelletsang li-radicals tsa mahala le li-intermediates tsa hydroperoxide. Li-photostabilizer li thibela tšebetso ena ka ho ntša mahlaseli a kotsi a mahlaseli a kotsi kapa ka tlholisano ea ho monya mahlaseli a kotsi a UV.
Li-stabilizer tsa amine light stabilizer (HALS) tse sitisang haholo-holo li sebetsa ka ho hlakola li-radical intermediate tsa mahala ts'ebetsong ea photooxidation. HALS e sebetsa haholo bakeng sa ho tsitsisa leseli la polyolefin, li-styrenic polymers le lipolasetiki tse ling tsa boenjiniere.
Liabsorer tsa Ultraviolet (UV) li sebetsa ka ho sireletsa bokahare ba likarolo tsa polasetiki mahlaseling a kotsi a UV. Lihlahisoa tsena li tšoauoa ka ho monya ho matla ha UV le boemo bo phahameng ba ho nka lifoto. Li-absorber tsa UV li atleha ho tsitsisa lipolasetiki tse ngata, ho kenyeletsoa PVC le polasetiki ea boenjiniere. Li boetse li sebelisoa lits'ebetsong tsa polasetiki ho sireletsa likahare tsa sephutheloana mahlaseling a UV.
Likopano tsa HALS le li-absorber tsa UV hangata li bonts'a ts'ebetso e ts'oanang holim'a li-stabilizer tse bobebe feela.
