Polasetiki ke ntho eo re e sebelisang khafetsa bophelong ba rona ba letsatsi le letsatsi. E nyane joaloka mekotla ea polasetiki, libotlolo tsa masea, libotlolo tsa lino, mabokose a lijo tsa motšehare, sekoaelo sa polasetiki, se seholo joaloka filimi ea temo, thepa ea ka tlung, lisebelisoa tsa motlakase, khatiso ea 3D, esita le lirokete le limisaele, li-plastiki kaofela li teng.
Polasetiki ke lekala la bohlokoa la lisebelisoa tsa polima ea manyolo, tse nang le mefuta e mengata, chai e kholo le lits'ebetso tse pharaletseng. Bakeng sa li-plastiki tse fapaneng, li ka aroloa ka tsela e latelang:
1. Ho ea ka boits'oaro ha bo futhumetse, lipolasetiki li ka aroloa ka li-thermoplastics le thermosetting science ho latela boits'oaro ba tsona ha li futhumetse;
2. Ho ea ka mofuta oa karabelo nakong ea tswakana ea lehoakhoa ka polasetiki, lehoakhoa leo le ka aroloa ka lipolasetiki tse nang le polasetiki le polasetiki e nang le liphaephe tse ngata;
3. Ho latela maemo a li-macromolecule tsa lehoakhoa, li-plastiki li ka aroloa ka mefuta e 'meli: li-plastiki tsa amorphous le li-plastiki tsa kristale;
4. Ho latela boholo ba tšebetso le ts'ebeliso, li-plastiki li ka aroloa ka li-plastiki tse akaretsang, li-plastiki tsa boenjineri le li-plastiki tse khethehileng.
Har'a tsona, li-plastiki tsa sepheo se akaretsang ke tsona tse sebelisoang haholo maphelong a rona a letsatsi le letsatsi. Lisebelisoa tsa polasetiki tse akaretsang li bua ka li-plastiki tse nang le molumo o moholo oa tlhahiso, phepelo e pharaletseng, theko e tlase ebile e loketse lits'ebeliso tse kholo. Lisebelisoa tsa polasetiki tse akaretsang li na le ts'ebetso e ntle ea ho bōpa, 'me li ka bōptjoa hore e be lihlahisoa bakeng sa merero e fapaneng ka lits'ebetso tse fapaneng. Lisebelisoa tsa polasetiki tse akaretsang li kenyelletsa polyethylene (PE), polypropylene (PP), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile / butadiene / styrene (ABS).
Lekhetlong lena ke tla bua haholo ka thepa ea mantlha le ts'ebeliso ea polyethylene (PE). Polyethylene (PE) e na le thepa e ntle ea ho e lokisa le ho e sebelisa, ke mofuta o sebelisoang ka ho fetisisa ho li-resin tsa maiketsetso, 'me matla a eona a tlhahiso a nkile sebaka sa pele hara mefuta eohle ea polasetiki. Lisebelisoa tsa polyethylene haholo li kenyelletsa polyethylene e nang le letsoalo le tlase (LDPE), polyethylene (LLDPE), le polyethylene e phahameng haholo (HDPE).
Polyethylene e sebelisoa haholo linaheng tse fapaneng, 'me filimi ke eona e sebelisang e kholo ka ho fetisisa. E sebelisa hoo e ka bang 77% ea polyethylene e nang le letsoalo le tlase le 18% ea polyethylene e phahameng. Ntle le moo, lihlahisoa tse entsoeng ka ente, lithapo le likhoele, lihlahisoa tse sekoti, jj kaofela li nka sebopeho sa ts'ebeliso ea tsona. Har'a li-resin tse hlano tsa sepheo se akaretsang, ts'ebeliso ea PE e qala pele. Polyethylene e ka boptjoa ho etsa libotlolo tse fapaneng, makotikoti, litanka tsa indasteri, libarele le lijana tse ling; ente e bopiloeng ho etsa lipitsa tse fapaneng, meqomo, libaskete, libaskete, libaskete le lijana tse ling tsa letsatsi le letsatsi, lisundries tsa letsatsi le letsatsi le thepa ea ka tlung, jj .; extrusion molding Etsa mefuta eohle ea lipeipi, marapo, likhoele, monofilaments, jj Ho feta moo, e ka sebelisoa ho etsa thepa ea terata le thepa ea ho roala thapo le pampiri ea maiketsetso. Har'a likopo tse ngata, libaka tse peli tsa mantlha tsa bareki tsa polyethylene ke lipeipi le lifilimi. Ka nts'etsopele ea kaho ea litoropo, filimi ea temo le liindasteri tse fapaneng tsa lijo, masela le indasteri, nts'etsopele ea likarolo tsena tse peli e se e pharalletse le ho feta.
