Lipalete tsa polasetiki hajoale li entsoe haholo-holo ka HDPE, 'me mefuta e fapaneng ea HDPE e na le thepa e fapaneng. Litšobotsi tse ikhethang tsa HDPE ke motsoako o nepahetseng oa mefuta e mene ea motheo: bongata, boima ba limolek'hule, kabo ea boima ba limolek'hule le lintho tse ling tse eketsang. Li-catalyst tse fapaneng li sebelisoa ho hlahisa li-polymer tse ikhethileng tsa ts'ebetso. Mefuta ena e kopantsoe ho hlahisa mefuta ea HDPE bakeng sa merero e fapaneng, ho fihlela tekano ts'ebetsong.
Tlhahisong le ts'ebetsong ea 'nete ea li-pallet tsa polasetiki, boleng ba lintho tsena tse ka sehloohong bo na le tšusumetso ho tse ling. Rea tseba hore ethylene ke thepa e tala ea mantlha bakeng sa polyethylene, 'me li-comonomer tse ling tse' maloa, tse kang 1-butene, 1-hexene kapa 1-octene, le tsona li atisa ho sebelisoa ho ntlafatsa thepa ea polymer. Bakeng sa HDPE, litaba tsa li-monomer tse 'maloa tse boletsoeng ka holimo hangata ha li fete 1%-2%. Ho eketsoa ha li-comonomer ho fokotsa hanyane kristale ea polymer. Phetoho ena hangata e lekanngoa ka bongata, 'me bongata bo amana ka tsela e otlolohileng le kristale.
Ha e le hantle, bongata bo fapaneng ba HDPE bo tla hlahisa dipharologanyo tse kgolo tshebetsong ya diphalete tsa polasetiki tse entsweng. Bongata ba polyethylene e mahareng (MDPE) bo tloha ho 0.926 ho isa ho 0.940g/CC. Dihlopha tse ding ka nako e nngwe di arola MDPE e le HDPE kapa LLDPE. Di-homopolymer di na le boima bo phahameng ka ho fetisisa, ho tiya, ho se kenele hantle le ntlha e phahameng ka ho fetisisa ya ho qhibiliha.
Hangata ts'ebetsong ea ho etsa li-pallet tsa polasetiki, li-additives tse ling lia hlokahala ho netefatsa ts'ebetso e hlokahalang. Tšebeliso e khethehileng e hloka mekhoa e khethehileng ea li-additives, joalo ka ho eketsa li-antioxidants ho thibela ho senyeha ha polymer nakong ea ts'ebetso le ho thibela oxidation ea sehlahisoa se felileng nakong ea ts'ebeliso. Li-additives tse thibelang ho sisinyeha li sebelisoa mefuteng e mengata ea liphutheloana ho fokotsa ho khomarela ha lerōle le litšila libotlolong kapa liphuthelong.
Ho phaella moo, e le ho netefatsa boleng ba diphalete tsa polasetiki, tlhokomelo e eketsehileng e lokela ho lefshwa ho paka le ho boloka thepa e tala. Hangata ha ho bolokwa thepa ya HDPE, ho hlokahala hore e be hole le mehlodi ya mollo, e kentswe ka hara insulation, mme ntlo ya polokelo e lokela ho bolokwa e omme ebile e hlwekile. Ho thibetswe ka ho feletseng ho kopanya ditshila dife kapa dife, mme ho thibetswe ka ho feletseng ho pepesehela letsatsi le pula. Ho phaella moo, nakong ya ho tsamaiswa, e lokela ho bolokwa ka hara kariki kapa karacheng e hlwekileng, e omileng le e kwahetsweng, mme ha ho dintho tse bohale tse kang dipekere tse lokelang ho dumellwa.
Nako ea poso: Phupu-04-2025
