litaba

HDPE e na le litšoaneleho tse ntle tsa ts'ebetso ea matla a matle, ho tiea ho hotle, ho tiea hantle, le ho hanyetsa ho bola, ho se kenelle ha metsi le ho hanyetsa mongobo, mocheso le ho hanyetsa serame, ka hona e na le lits'ebetso tsa bohlokoa ho bopeng ho otla, ho bopa ente le phala.Ka ho thehoa ha mekhoa ea indasteri e kang polasetiki ho e-na le tšepe, polasetiki ho e-na le lehong, HDPE e le thepa e phahameng ea polyethylene e tla potlakisa ho nkeloa sebaka ha thepa ea setso nakong e tlang.E le thepa ea mantlha ea filimi ea temo le ea ho paka, LDPE e tlase ho LLDPE ka matla a mochini, ho kenya mocheso le ts'ebetso ea ho kenya mongobo, le ho hanyetsa kutu.Ka hona, tlhoko ea 'maraka ea LLDPE e ntse e hola ka potlako lilemong tsa morao tjena, butle-butle e koenya karolo e' ngoe ea 'maraka ea LDPE.

1. Polyethylene (PE) ketane ea indasteri

Polyethylene ke e 'ngoe ea li-resin tse hlano tse kholo tsa maiketsetso, empa hape ke matla a maholohali a tlhahiso ea li-resin tsa maiketsetso tsa malapeng, li kenya mefuta e mengata ka ho fetisisa kantle ho naha.Hobane polyethylene e ka holimo ho ethylene, tlhahiso e itšetlehile haholo ka tsela ea naphtha, 'me phaello e tšoana.

Tšebeliso e kholo ka ho fetisisa ea polyethylene e ka tlase ho metsi ke filimi, e entseng hoo e ka bang 54% ea tlhokahalo eohle ea polyethylene ka 2020. Ho phaella moo, lisebelisoa tsa tubula li nka karolo ea 12%, lijana tse se nang letho li nka karolo ea 12%, ho etsoa ha ente ho nka 11%, le terata. ho penta hoo e ka bang 4%.

2. Boemo ba hona joale ba indasteri ea polyethylene (PE).

Lilemong tsa morao tjena, matla a naha a tlhahiso ea polyethylene a eketsehile selemo le selemo.Ka 2021, tlhahiso ea naha ea polyethylene e ka ba lithane tse 25,746,300, ho nyoloha ka 11.8% selemo le selemo.

Mabapi le tlhahiso, ho tloha 2018, tlhahiso ea polyethylene ea China e ntse e eketseha butle-butle.Ka 2018, tlhahiso ea polyethylene ea China e ne e ka ba lithane tse limilione tse 16.26, 'me e fihlile ho lithane tse limilione tse 22.72 ka 2021, ka sekhahla sa kholo ea selemo le selemo ea 11.8% nakong eo.

Ho tloha 2015 ho ea ho 2020, tšebeliso e bonahalang ea polyethylene Chaena butle-butle e ile ea eketseha, 'me ka 2021, tšebeliso e bonahalang ea polyethylene Chaena e theohile ho lithane tse 37.365,000, ho fokotseha ha 3.2% selemo le selemo.Haholo-holo ka lebaka la phello ea seoa sena le taolo e habeli ea tšebeliso ea matla, lifeme tse ling tse tlase ho metsi li emisitse kapa li fokolitse tlhahiso.Ka ntlafatso ea ho itlhokomela, ho itšetleha ka thepa ea PE ho tla fokotseha butle-butle.Nakong e tlang, ka ntlafatso ea seoa le kholo e tsitsitseng ea moruo oa lehae, tlhoko ea PE e tla tsoela pele ho eketseha.

Ho ea ka lipalo-palo tsa meetlo, ho tloha ka January ho ea ho February 2022, kakaretso ea ho kenngoa ha polyethylene e ne e ka ba lithane tse 2,217,900, 13.46% ka tlase ho nako e tšoanang selemong se fetileng.Naha ea rona ea polyethylene e kenya chelete e ngata ka ho fetisisa ho tsoa Saudi Arabia, kakaretso ea thepa ke lithane tse 475,900, tse etsang 21.46%;Ea bobeli ke Iran, e nang le kakaretso ea lithane tse 328,300, tse etsang 14.80%;Ea boraro ke United Arab Emirates, e nang le kakaretso ea lithane tse 299,600, tse etsang 13.51%.

Mabapi le thomello ea kantle ho naha, ho tloha ka Pherekhong ho isa Pherekhong 2022, bophahamo ba thepa ea polyethylene ea China bo bonts'itse ho theoha, ha ka phapang e kholo, thomello e ile ea phahama haholo.Hoo e ka bang lithane tse 53,100 tsa polyethylene li rometsoe kantle ho naha ka Pherekhong-Hlakola 2022, ho nyoloha ka 29.76% ho tloha nakong e tšoanang selemong se fetileng.Ka ho khetheha, LDPE e romela lithane tse ka bang 22,100, HDPE e romela lithane tse ka bang 25,400, 'me LLDPE e romela lithane tse ka bang 50,600.

3. Mathata a theknoloji ea indasteri ea polyethylene (PE).

Hajoale, nts'etsopele ea theknoloji ea polyethylene Chaena e na le mathata a latelang:

(1) Khaello ea theknoloji e tsoetseng pele ea tlhahiso ea polyethylene.Chaena, ke semela sa Fushun Ethylene Chemical feela se sebelisang theknoloji ea ts'ebetso ea Sclairtech ho hlahisa lihlahisoa tsa octene 1 tsa copolymerization, 'me ke Shanghai Jinshan Petrochemical Company feela e nang le theknoloji ea Borealis Bostar North Star supercritical polymerization process.Theknoloji ea ts'ebetso ea solvent e ka hare ea Dow Chemical Co., LTD ha e so ka e hlahisoa Chaena.

(2) Ho haella ha α-olefin copolymerization e tsoetseng pele ea thepa e tala ea polyethylene le theknoloji, Chaena e na le bokhoni ba ho sebelisa copolymerization ea 1-butene le 1-hexene ho lokisa polyethylene, ka 1-octene, decene, 4-methyl-1-pentene le tlhahiso e 'ngoe e tsoetseng pele ea indasteri ea α-olefin e ntse e se na letho.

(3) Theko e phahameng ea tlhahiso ea lihlahisoa tse tala tsa EVA, lihlahisoa tse fokolang tse nang le VA e ngata, le boiteko bo fokolang ho nts'etsopele ea filimi e sebetsang le sekhomaretsi se chesang se chesang.