Li-stabilizers tsa PVCKe li-additives tse sebelisetsoang ho ntlafatsa botsitso ba mocheso oa polyvinyl chloride (PVC) le li-copolymers tsa eona. Bakeng sa li-plastiki tsa PVC, haeba mocheso oa ho sebetsa o feta 160 ℃, ho senyeha ha mocheso ho tla etsahala 'me khase ea HCl e tla hlahisoa. Haeba e sa hatellehe, ho bola hona ha mocheso ho tla mpefala le ho feta, ho tla susumetsa nts'etsopele le ts'ebeliso ea lipolasetiki tsa PVC.
Boithuto bo fumane hore haeba polasetiki ea PVC e na le letsoai le lengata, sesepa sa tšepe, phenol, amine e nkhang hamonate le litšila tse ling, ts'ebetso ea eona le ts'ebeliso ea eona e ke ke ea ameha, leha ho le joalo, ho bola ha eona ho ka fokotsoa ho isa bohōleng bo itseng. Lithuto tsena li khothaletsa ho theoa le nts'etsopele e tsoelang pele ea li-stabilizer tsa PVC.
Li-stabilizers tse tloaelehileng tsa PVC li kenyelletsa li-stabilizer tsa organotin, li-stabilizer tsa letsoai tsa tšepe, le li-stabilizer tsa letsoai tse sa sebetseng. Li-stabilizer tsa Organotin li sebelisoa haholo tlhahiso ea lihlahisoa tsa PVC ka lebaka la pepenene ea tsona, ho hanyetsa boemo ba leholimo bo botle, le ho lumellana ha tsona. Metal salt stabilizers hangata e sebelisa calcium, zinc, kapa barium salts, e ka fanang ka botsitso bo molemonyana ba mocheso. Li-inorganic salt stabilizers tse kang tribasic lead sulfate, dibasic lead phosphite, joalo-joalo li na le thermostability ea nako e telele le insulation e ntle ea motlakase. Ha u khetha stabilizer e loketseng ea PVC, u lokela ho nahana ka maemo a kopo ea lihlahisoa tsa PVC le thepa e hlokahalang ea botsitso. Li-stabilizer tse fapaneng li tla ama ts'ebetso ea lihlahisoa tsa PVC 'meleng le ka lik'hemik'hale, kahoo ho hlophisoa ka thata le ho hlahlojoa hoa hlokahala ho etsa bonnete ba hore li-stabilizer li nepahetse. Kenyelletso e qaqileng le papiso ea li-stabilizer tse fapaneng tsa PVC ke tse latelang:
Organotin Stabilizer:Li-stabilizer tsa Organotin ke li-stabilizer tse sebetsang ka ho fetisisa bakeng sa lihlahisoa tsa PVC. Lik'hemik'hale tsa bona ke lihlahisoa tsa karabelo tsa organotin oxides kapa organotin chlorides tse nang le li-acid kapa li-ester tse loketseng.
Li-stabilizer tsa Organotin li arotsoe ka sebabole le se se nang sebabole. Sulfur-containing stabilizers' stabilizers e ikhetha, empa ho na le mathata a tatso le a cross-staining a tšoanang le metsoako e meng e nang le sebabole. Li-non-sulfur organotin stabilizers hangata li thehiloe holim'a asiti ea maleic kapa halofo ea maic acid esters. Ba rata methyl tin stabilizers ke li-stabilizer tse sa sebetseng hantle tse nang le botsitso bo betere ba khanya.
Li-stabilizer tsa Organotin li sebelisoa haholo ho paka lijo le lihlahisoa tse ling tse pepeneneng tsa PVC joalo ka li-hoses tse pepeneneng.
Li-Ead Stabilizers:Li-lead stabilizers tse tloaelehileng li kenyelletsa metsoako e latelang: dibasic lead stearate, hydrated tribasic lead sulfate, dibasic lead phthalate, le dibasic lead phosphate.
Joalo ka li-stabilizers tsa mocheso, metsoako ea lead e ke ke ea senya thepa e ntle ea motlakase, ho monya metsi a tlase, le ho hanyetsa boemo ba leholimo kantle ba thepa ea PVC. Leha ho le joalo,lead stabilizersna le mefokolo e kang:
- Ho ba le toxicity;
- tšilafalo ea sefapano, haholo-holo ka sebabole;
- Ho hlahisa lead lead chloride, e tla etsa streaks lihlahisoa tse felileng;
- Karolelano e boima, e bakang karo-karolelano ea boima / bophahamo bo sa khotsofatseng.
- Li-stabilizer tse etellang pele hangata li etsa hore lihlahisoa tsa PVC li se ke tsa bonahala hang-hang 'me li senyehe kapele ka mor'a mocheso o tsitsitseng.
Ho sa tsotellehe bofokoli bona, li-stabilizer tsa loto li ntse li amoheloa ka bongata. Bakeng sa ho kenya motlakase, li-lead stabilizers li khethoa. Ho rua molemo ho phello ea eona e akaretsang, lihlahisoa tse ngata tse tenyetsehang le tse thata tsa PVC li hlokomeloa joalo ka likarolo tsa kantle tsa cable, liboto tse thata tsa PVC tse opaque, liphaephe tse thata, matlalo a maiketsetso le liente.
Metal letsoai stabilizers: Li-stabilizer tsa letsoai tse tsoakiloengke li-aggregate tsa metsoako e fapaneng, hangata e etselitsoeng ho latela lits'ebetso le basebelisi ba PVC. Mofuta ona oa stabilizer o bile teng ho tloha ho kenyelletsoeng ha barium succinate le cadmium palm acid feela ho kopanya 'mele oa sesepa sa barium, sesepa sa cadmium, sesepa sa zinki le phosphite ea tlhaho, e nang le li-antioxidants, solvents, extenders, plasticizers, colorants, UV absorbers, lighteners. , li-viscosity control agents, litlolo, le litatso tsa maiketsetso. Ka lebaka leo, ho na le lintlha tse ngata tse ka amang phello ea stabilizer ea ho qetela.
Metal stabilizers, tse kang barium, calcium, le magnesium ha li sireletse 'mala oa pele oa thepa ea PVC empa li ka fana ka ho hanyetsa mocheso nako e telele. Lisebelisoa tsa PVC tse tsitsitseng ka tsela ena li qala ho ba mosehla / lamunu, ebe butle-butle li fetoha sootho, 'me qetellong li be ntšo ka mor'a mocheso o sa khaotseng.
Li-stabilizer tsa Cadmium le zinki li qalile ho sebelisoa hobane li pepenene ebile li khona ho boloka 'mala oa mantlha oa lihlahisoa tsa PVC. Thermostability ea nako e telele e fanoang ke cadmium le zinc stabilizers e mpe haholo ho feta e fanoang ke barium, e atisang ho senyeha ka tšohanyetso ka ho feletseng ka letšoao le lenyenyane kapa le se nang letho.
Ho phaella ho ntlha ea karo-karolelano ea tšepe, phello ea tšepe stabilizers letsoai e boetse e amana le metsoako ea bona ea letsoai, e leng lintlha tse ka sehloohong tse amang thepa e latelang: lubricity, mobility, transparency, pigment color change, and thermal stability of PVC. Ka tlase ho na le li-stabilizer tse 'maloa tse tloaelehileng tse tsoakiloeng tsa tšepe: 2-ethylcaproate, phenolate, benzoate le stearate.
Metal salt stabilizers e sebelisoa haholo lihlahisoa tse bonolo tsa PVC le lihlahisoa tse bonolo tsa PVC tse kang ho paka lijo, lisebelisoa tsa bongaka le liphutheloana tsa meriana.
Nako ea poso: Oct-11-2023