Ho Atolosoa ha Li-valve tsa Plastiki

Le hoja ka linako tse ling li-valve tsa polasetiki li nkoa e le sehlahisoa se khethehileng-khetho e ka sehloohong ea ba etsang kapa ba qapa lihlahisoa tsa liphaephe tsa polasetiki bakeng sa tsamaiso ea indasteri kapa ba tlamehang ho ba le lisebelisoa tse hloekileng haholo-ho nka hore li-valve tsena ha li na tšebeliso e ngata ea kakaretso ke pono e khutšoanyane. Ha e le hantle, li-valve tsa polasetiki kajeno li na le mefuta e mengata ea tšebeliso ha mefuta e ntseng e eketseha ea thepa le baqapi ba molemo ba hlokang lisebelisoa tseo ba bolela litsela tse ngata tsa ho sebelisa lisebelisoa tsena tse ngata.

LITŠOANTŠISO PLASTIKI
Melemo ea li-valve tsa polasetiki li na le bophara-ho senya, lik'hemik'hale le ho hanyetsa abrasion; mabota a ka hare a boreleli; boima bo bobebe; boiketlo ba ho kenya; tebello ea bophelo bo bolelele; le litšenyehelo tse tlase tsa potoloho ea bophelo. Melemo ena e lebisitse ho amoheleheng ho pharaletseng ha li-valve tsa polasetiki lits'ebetsong tsa khoebo le tsa indasteri tse kang ho ajoa ha metsi, phekolo ea metsi a litšila, ts'ebetso ea tšepe le lik'hemik'hale, lijo le meriana, limela tsa motlakase, lihlahisoa tsa oli le tse ling.
Li-valve tsa polasetiki li ka etsoa ka lisebelisoa tse fapaneng tse sebelisoang mekhoeng e mengata. Li-valve tsa polasetiki tse tloaelehileng haholo li entsoe ka polyvinyl chloride (PVC), chlorinated polyvinyl chloride (CPVC), polypropylene (PP), le polyvinylidene fluoride (PVDF). Li-valve tsa PVC le tsa CPVC li atisa ho kopanngoa le tsamaiso ea liphaephe ka li-socket sockets tsa solvent, kapa lipheletsong tse nang le likhoele le tse nang le flanged; athe, PP le PVDF li hloka ho kopanngoa ha likarolo tsa tsamaiso ea liphaephe, ebang ke ka mocheso-, butt- kapa electro-fusion technologies.

Le hoja polypropylene e na le halofo ea matla a PVC le CPVC, e na le lik'hemik'hale tse ngata tse hanyetsanang le lik'hemik'hale hobane ha ho na li-solvents tse tsejoang. PP e sebetsa hantle ka har'a acetic acid le hydroxides, hape e loketse litharollo tse bobebe tsa li-acids tse ngata, alkalis, matsoai le lik'hemik'hale tse ngata tsa tlhaho.

PP e fumaneha e le thepa e mebala-bala kapa e se nang 'mala (ea tlhaho). Natural PP e senyehile haholo ke mahlaseli a ultraviolet (UV), empa metsoako e nang le "carbon black pigmentation" e fetang 2.5% e tsitsitse ka mokhoa o lekaneng oa UV.

Lisebelisoa tsa liphaephe tsa PVDF li sebelisoa mefuteng e fapaneng ea liindasteri ho tloha ho tsa meriana ho ea merafong ka lebaka la matla a PVDF, mocheso o sebetsang le ho hanyetsa lik'hemik'hale ho matsoai, li-acids tse matla, li-bases tsa dilute le lihlahisoa tse ngata tsa tlhaho. Ho fapana le PP, PVDF ha e senyehe ke khanya ea letsatsi; leha ho le joalo, polasetiki e pepesehetse mahlaseli a letsatsi 'me e ka pepesetsa mokelikeli mahlaseling a UV. Le hoja motsoako oa tlhaho, o se nang 'mala oa PVDF o le motle haholo bakeng sa ho hloeka ho phahameng, lisebelisoa tsa ka tlung, ho eketsa mmala o kang o mofubelu oa lijo ho ka lumella ho pepesehela mahlaseli a letsatsi ntle le phello e mpe mokelikeli.