Pampiri ena e hlahloba kamoo li-stabilizers tsa mocheso li amang lihlahisoa tsa PVC, li lebisa tlhokomelo hoho hanyetsa mocheso, ho sebetsa hantle, le ho pepeseha. Ka ho sekaseka lingoliloeng le lintlha tsa liteko, re hlahloba tšebelisano lipakeng tsa li-stabilizers le resin ea PVC, le hore na li theha botsitso ba mocheso, bonolo ba tlhahiso, le thepa ea mahlo.
1. Selelekela
PVC ke thermoplastic e sebelisoang haholo, empa ho se tsitse ha eona ho fokotsa ts'ebetso.Li-stabilizers tsa mochesofokotsa ho senyeha ha mocheso o phahameng hape o ama ts'ebetso le pepeneneng - e bohlokoa bakeng sa lits'ebetso tse kang ho paka le lifilimi tsa meralo.
2. Ho hanyetsa mocheso oa Stabilizers ho PVC
2.1 Mekhoa ea ho tsitsisa
Li-stabilizer tse fapaneng (tse thehiloeng ho lead,calcium - zinki, organotin) sebelisa mekhoa e fapaneng:
Keta - e thehiloeng: Itšoare ka liathomo tsa labile Cl ka liketane tsa PVC ho theha li-complexes tse tsitsitseng, ho thibela ho senyeha.
Calcium - zinki: Kopanya asiti - tlamang le radical - scavenging.
Organotinmethyl/butyl tin): Ho hokahanya le liketane tsa polymer ho thibela dehydrochlorination, ka mokhoa o atlehileng ho hatella ho senyeha.
2.2 Ho Lekola Botsitso ba Thermal
Litlhahlobo tsa Thermogravimetric analysis (TGA) li bontša organotin - PVC e tsitsitseng e na le mocheso o phahameng oa ho qala ho senyeha ho feta mekhoa ea setso ea calcium - zinki. Leha li-stabilizer tse thehiloeng ho lead li fana ka botsitso ba nako e telele lits'ebetsong tse ling, mathata a tikoloho / bophelo bo botle a thibela tšebeliso.
3. Liphello tsa Ts'ebetso
3.1 Melt Flow & Viscosity
Li-stabilizer li fetola mokhoa oa ho qhibiliha oa PVC:
Calcium - zinki: E ka eketsa viscosity ea qhibiliha, e sitisa ho bopa ha extrusion / ente.
Organotin: Fokotsa viscosity bakeng sa ts'ebetso e bonolo, e tlase - e loketseng bakeng sa mela e phahameng ea lebelo.
Keta - e thehiloeng: Phallo e leka-lekaneng ea ho qhibiliha empa lifensetere tse sebetsanang le tšesaane ka lebaka la lipoleiti - ho tsoa likotsi.
3.2 Lubrication & Mold Release
Li-stabilizer tse ling li sebetsa joalo ka mafura:
Calcium - li-zinc formulations hangata li kenyelletsa mafura a ka hare ho ntlafatsa ho lokolloa ha hlobo ha ho etsoa ente.
Li-stabilizer tsa Organotin li matlafatsa PVC - tšebelisano ea tlatsetso, ka tsela e sa tobang e thusa ts'ebetso.
4. Tšusumetso ho Ponaletso
4.1 Tšebelisano le Sebopeho sa PVC
Ho pepeseha ho ipapisitse le ho hasana ha stabilizer ho PVC:
Hantle - tse qhalakaneng, tse nyenyane - li-particle calcium - zinc stabilizers li fokotsa ho hasana ha leseli, ho boloka ho hlaka.
Organotin stabilizerskopanya ka liketane tsa PVC, ho fokotsa ho sotheha ha optical.
Li-stabilizers tse thehiloeng pele (tse kholo, tse sa ajoang ka tsela e sa tšoaneng) li baka ho hasana ha leseli le boima, ho theola pepeneneng.
4.2 Mefuta ea Stabilizer & Ponaletso
Lithuto tsa papiso li bontša:
Organotin - lifilimi tse tsitsitseng tsa PVC li fihlella> 90% ea phetisetso ea leseli.
Calcium - zinki stabilizers lihlahisoa ~ 85-88% phetiso.
Li-stabilizer tse thehiloeng ho lead li sebetsa hampe le ho feta.
Litšitiso tse kang "mahlo a litlhapi" (a tlamelletsoeng boleng ba stabilizer / hasane) le tsona li fokotsa ho hlaka-li-stabilizers tsa boleng bo phahameng li fokotsa litaba tsena.
5. Qetello
Li-stabilizer tsa mocheso li bohlokoa bakeng sa ts'ebetso ea PVC, ho bopa ho hanyetsa mocheso, ho sebetsa le ho pepeseha:
Keta - e thehiloeng: Fana ka botsitso empa u tobane le tšitiso ea tikoloho.
Calcium - zinki: Eco - e mosa empa e hloka ntlafatso ea ts'ebetso / pepeneneng.
Organotin: E ipabola likarolong tsohle empa e tobana le litšitiso tsa litšenyehelo/taolo libakeng tse ling.
Patlisiso ea kamoso e lokela ho nts'etsapele li-stabilizer tse lekanyang botsitso, ts'ebetso e sebetsang hantle, le boleng ba optical ho fihlela litlhoko tsa indasteri.
Nako ea poso: Jun-23-2025