Sehlopha sa Polyethylene
Sehlopha sa polyethylene
Polyethylene e arotsoe ka polyethylene e phahameng (HDPE), polyethylene e tlaase (LDPE) le polyethylene e tlaase e tlaase (LLDPE) ho latela mokhoa oa polymerization, boima ba limolek'hule le sebopeho sa ketane.
LDPE
Thepa: ha e na tatso, ha e na monko, ha e na chefo, sebaka se lerootho, likaroloana tsa boka bo bosoeu bo bosoeu, boima bo ka bang 0.920 g/cm3, ntlha e qhibilihang 130℃～145℃. Ha e qhibilihe ka metsing, e qhibiliha hanyenyane ka har'a li-hydrocarbon, joalo-joalo E khona ho mamella khoholeho ea li-acids le alkalis, e na le metsi a fokolang, e ntse e ka boloka ho fetoha ha maemo ha mocheso o tlaase, 'me e na le motlakase o phahameng.
Tshebetso ea ho hlahisa:
Haholo-holo ho na le mefuta e 'meli ea mokhoa o phahameng oa khatello ea maikutlo le mokhoa oa kettle. E le ho fokotsa mocheso oa karabelo le khatello, liphatsa tsa lefutso tsa tubularrally e amohela mocheso o tlase oa mocheso o phahameng oa ts'ebetso ho qala mokhoa oa polymerization, ethylene e phahameng ea bohloeki e sebelisoa e le thepa e ka sehloohong e tala, propylene, propane, joalo-joalo li sebelisoa e le li-adjuster tsa density. Polymerization e ile ea etsoa tlas'a maemo a 330 ° C le 150-300MPa. Polymer e entsoeng ka ho qhibilihisoa e qalang polymerization ka har'a reactor e tlameha ho pholile le ho aroloa ka khatello e phahameng, khatello e mahareng le khatello e tlase. Ka mor'a karohano, e romelloa ho seketsoana sa khatello e phahameng (30 MPa) compressor, ha khase e potolohang ea khatello e tlaase e pholile 'me e arohanngoa' me e romelloa ho compressor e tlaase (0.5 MPa) bakeng sa ho tsosolosoa, ha polyethylene e qhibilihisitsoeng. e romeloa ho granulator ka mor'a karohano ea khatello e phahameng le e tlaase. Bakeng sa granulation ka metsing, nakong ea granulation, likhoebo li ka eketsa li-additives tse nepahetseng ho ea ka likarolo tse fapaneng tsa kopo, 'me li-granules li kenngoa liphutheloana ebe li romeloa.
Sebelisa:
Ho ka sebelisoa mekhoa ea ho sebetsa joalo ka ente ea ente, extrusion molding, le blow molding. Haholo-holo e sebelisoa e le Agricultural filimi, filimi ea ho paka liindasteri, filimi ea meriana le lijo, likarolo tsa mochine, litlhoko tsa letsatsi le letsatsi, thepa ea mohaho, terata, li-cable insulation, ho roala le pampiri ea maiketsetso.
LLDPE
Thepa: Hobane libopeho tsa limolek'hule tsa LLDPE le LDPE ho hlakile hore li fapane, thepa le eona e fapane. Ha e bapisoa le LDPE, LLDPE e na le khanyetso e ntle haholo ea khatello ea tikoloho le ho kenya motlakase, ho hanyetsa mocheso o phahameng, ho hanyetsa tšusumetso le ho phunya.
Tshebetso ea ho hlahisa:
LLDPE resin e hlahisoa haholo ke lisebelisoa tse felletseng tsa polyethylene, 'me lits'ebetso tsa tlhahiso ea moemeli ke ts'ebetso ea Innovene le ts'ebetso ea UCC ea Unipol.
Sebelisa:
Ka ho bopa ka ente, extrusion, ho bopa le mekhoa e meng ea ho bopa, tlhahiso ea lifilimi, litlhoko tsa letsatsi le letsatsi, liphaephe, lithapo le likhoele, joalo-joalo.
HDPE
Thepa: Natural, likaroloana tsa cylindrical kapa oblate, likaroloana tse boreleli, boholo ba likaroloana e lokela ho ba 2 mm ~ 5 mm ka tsela leha e le efe, ho se na litšila tse etsoang; thermoplastic. Phofo ke phofo e tšoeu, 'me sehlahisoa se tšoanelehang se lumelloa ho ba le mosehla o monyenyane mmala. Ha e qhibilihe ka har'a metsoako e tloaelehileng mochesong oa kamore, empa e ka ruruha ka har'a li-aliphatic hydrocarbons, li-hydrocarbon tse nkhang hamonate le li-halogenated hydrocarbons ha li kopane ka nako e telele, 'me li qhibiliha hanyenyane ho toluene le acetic acid mochesong o ka holimo ho 70 °C. Oxidation e etsahala ha ho futhumala moeeng le tlas'a tšusumetso ea letsatsi. E hanana le khoholeho e ngata ea asiti le alkali. E na le ho monya metsi a tlase, e ntse e khona ho boloka maemo a bonolo mochesong o tlase, 'me e na le mokelikeli o phahameng oa motlakase.
Tshebetso ea ho hlahisa:
Mekhoa e 'meli ea tlhahiso e amoheloa: mokhoa oa khase ea khase le mokhoa oa slurry.
Sebelisa:
Ho sebelisa mochini oa ente, ho bopa ho otla, ho bopa extrusion, rotomolding le mekhoa e meng ea ho bopa ho hlahisa lihlahisoa tsa lifilimi, litlhoko tsa letsatsi le letsatsi le ts'ebeliso ea indasteri ea boholo bo fapaneng ba lijana tse se nang letho, liphaephe, litheipi tsa calendering le litheipi tse tlamang bakeng sa ho paka, liropo, matlooa a ho tšoasa litlhapi le likhoele tse lohiloeng, Mohala le thapo jj.
Sehlopha sa Polyethylene