Ha ho bapisoa le lisebelisoa tsa PET le PP, PP e tla ba e phahametseng ts'ebetso.
1. Phapang ho tsoa ho tlhaloso
PET(Polyethylene terephthalate) Lebitso la mahlale ke polyethylene terephthalate, eo hangata e tsejoang e le polyester resin, ke thepa ea resin.
PP(polypropylene) lebitso la mahlale ke polypropylene, e leng polymer e entsoeng ka ho eketsa polymerization ea propylene, hape ke resin ea maiketsetso ea thermoplastic.
2.Ho tsoa litšobotsing tsa phapang
(1) PET
①PET ke polymer e bosoeu bo bosehla kapa bo bosehla bo bobebe bo khanyang haholo bo boreleli ebile bo benya.
Lintho tse bonahalang tsa ②PET li na le khanyetso e ntle ea mokhathala, ho hanyetsa abrasion le botsitso ba sebopeho, ho apara ho tlaase le ho thatafala ho phahameng, matla a ho kobeha a 200MPa, le modulus elastic ea 4000MPa.
③ Thepa ea PET e na le ts'ebetso e ntle ea ho hanyetsa mocheso o phahameng le o tlase, e ka sebelisoang nako e telele mochesong oa 120 ° C, 'me e khona ho mamella mocheso o phahameng oa 150 ° C bakeng sa tšebeliso ea nakoana le mocheso o tlase oa -70 ° C. C.
④ Ethylene glycol e sebelisitsoeng tlhahisong ea PET e na le litšenyehelo tse tlase le ts'ebetso ea theko e phahameng.
⑤ Thepa ea PET ha e na chefo, e na le botsitso bo botle khahlanong le lik'hemik'hale, 'me e hanyetsana le li-acids tse fokolang le li-solvents, empa ha e hanyetsane le ho qoelisoa metsing a chesang le alkali.
(2) PP
①PP ke thepa e tšoeu ea boka e nang le ponahalo e hlakileng le e bobebe. Ke mofuta o bobebe ka ho fetesisa oa li-resin tse sebelisoang hangata.
Lisebelisoa tsa ②PP li na le thepa e ntle ea mochini le ho hanyetsa mocheso o motle, 'me mocheso o tsoelang pele oa tšebeliso o ka fihla ho 110-120 ° C.
③ PP thepa e na le botsitso bo botle ba lik'hemik'hale 'me ha e sebelisane le lik'hemik'hale tse ngata ntle le li-oxidants tse matla.
④PP thepa e na le mocheso o phahameng oa ho qhibiliha le matla a tsitsitseng, 'me ponahalo ea filimi e phahame.
Lisebelisoa tsa ⑤PP li na le lisebelisoa tse ntle tsa motlakase, empa li bonolo ho tsofala ebile li na le tšusumetso e mpe mochesong o tlase.
3. Liphapang tsa tšebeliso
PET e sebelisoa haholo, joalo ka ho ohla fiber ea polyester, ke hore, polyester; joalo ka polasetiki, e ka butsoeloa ka libotlolong tse fapaneng; joalo ka likarolo tsa motlakase, libere, likere, joalo-joalo.
Lisebelisoa tsa PP li sebelisoa haholo ha ho etsoa entelihlahisoa tsa ho bopa, lifilimi, liphaephe, lipoleiti, likhoele, liaparo, joalo-joalo, hammoho le lisebelisoa tsa ntlo, mouoane, lik'hemik'hale, kaho, indasteri ea leseli le masimo a mang.
Nako ea poso: Sep-13-2022