izindaba

I-HDPE inezici ezinhle kakhulu zokusebenza zamandla amahle, ukuqina okuhle, ukuqina okuhle, nokumelana nokugqwala, ukungangeni kwamanzi nomswakama, ukumelana nokushisa nokubanda, ngakho-ke inezinhlelo zokusebenza ezibalulekile ekubumbeni igalelo, ukubumba umjovo kanye nepayipi.Ngokwakhiwa kwezitayela zezimboni ezifana nepulasitiki esikhundleni sensimbi, ipulasitiki esikhundleni sezinkuni, i-HDPE njengento ephezulu yokusebenza kwe-polyethylene izosheshisa ukushintshwa kwezinto zendabuko esikhathini esizayo.Njengento eyinhloko yefilimu yezolimo neyokufaka, i-LDPE ingaphansi kwe-LLDPE ngamandla emishini, ukufakwa kokushisa nokushisa nokusebenza kokufakwa komswakama, kanye nokumelana nokugqwala.Ngakho-ke, isidingo semakethe ye-LLDPE besikhula ngokushesha eminyakeni yamuva, kancane kancane sigwinya ingxenye yemakethe ye-LDPE.

1. Iketango lemboni ye-Polyethylene (PE).

I-Polyethylene ingenye yezinsalela ezinkulu ezinhlanu zokwenziwa, kodwa futhi amandla amakhulu okukhiqiza ama-resin okwenziwa asekhaya, ingenisa izinhlobo eziningi kakhulu.Ngenxa yokuthi i-polyethylene iphezulu kwe-ethylene, ukukhiqizwa kusekelwe ikakhulukazi emzileni we-naphtha, futhi inzuzo iyafana.

Ukusetshenziswa okukhulu kwe-polyethylene engezansi komfula ifilimu, eyabalelwa ku-54% yenani eliphelele le-polyethylene ngo-2020. Ngaphezu kwalokho, imishini ye-tubular yabalelwa ku-12%, iziqukathi ezingenalutho zibalelwa ku-12%, ukubumba umjovo kubalwe ku-11%, kanye nocingo. umdwebo ubalwe ku-4%.

2. Isimo samanje semboni ye-polyethylene (PE).

Eminyakeni yamuva, umthamo wezwe wokukhiqiza i-polyethylene uye wanda unyaka nonyaka.Ngo-2021, amandla okukhiqiza i-polyethylene yezwe acishe abe amathani angama-25,746,300, akhuphuke ngo-11.8% unyaka nonyaka.

Mayelana nokukhiqizwa, kusukela ngo-2018, ukukhiqizwa kwe-polyethylene yaseChina kuye kwanda kancane kancane.Ngo-2018, ukukhiqizwa kwe-polyethylene yaseChina kwakungamathani ayizigidi eziyi-16.26, futhi kwafinyelela kumathani ayizigidi ezingama-22.72 ngo-2021, ngesilinganiso sokukhula kwenhlanganisela yonyaka esingu-11.8% phakathi naleso sikhathi.

Kusukela ngo-2015 kuya ku-2020, ukusetshenziswa okusobala kwe-polyethylene e-China kwanda kancane kancane, futhi ngo-2021, ukusetshenziswa okusobala kwe-polyethylene e-China kwehle kuya kumathani angu-37.365,000, ukwehla ngo-3.2% unyaka nonyaka.Ikakhulukazi ngenxa yomthelela walolu bhubhane kanye nokulawulwa okukabili kokusetshenziswa kwamandla, ezinye izimboni ezisezansi nomfula zimise okwesikhashana noma zanciphisa ukukhiqizwa.Ngokuthuthukiswa kokuzanelisa, ukuncika kwamanye amazwe kwe-PE kuzokwehla kancane kancane.Ngokuzayo, ngokwenza ngcono kwalolu bhubhane kanye nokukhula okuqhubekayo komnotho wasekhaya, isidingo se-PE sizoqhubeka sikhula.

Ngokwezibalo zamasiko, kusukela ngoJanuwari kuya kuFebruwari 2022, inani eliphelele le-polyethylene elingenayo lalingamathani angu-2,217,900, 13.46% ngaphansi kwenkathi efanayo ngonyaka odlule.Izwe lethu i-polyethylene ingenisa inani elikhulu kunawo wonke livela e-Saudi Arabia, inani eliphelele lokungenisa lingamathani angu-475,900, okubalelwa ku-21.46%;Eyesibili yi-Iran, enenani eliphelele lamathani angama-328,300, okubalelwa ku-14.80%;Eyesithathu yi-United Arab Emirates, enenani eliphelele lamathani angama-299,600, okubalelwa ku-13.51%.

Mayelana nokuthunyelwa kwempahla kwamanye amazwe, kusukela ngoJanuwari kuya kuFebruwari 2022, umthamo wokungenisa we-polyethylene waseChina ubonise ukwehla, kuyilapho ngokuphambene kakhulu, ukuthunyelwa kwamanye amazwe kwenyuka kakhulu.Cishe amathani angama-53,100 e-polyethylene athunyelwa kwamanye amazwe ngoJanuwari-Februwari 2022, akhuphuka ngo-29.76% kusukela esikhathini esifanayo ngonyaka odlule.Ngokukhethekile, i-LDPE ithumela ngaphandle cishe amathani angama-22,100, i-HDPE ithumela ngaphandle cishe amathani angama-25,400, kanti i-LLDPE ithumela ngaphandle cishe amathani angama-50,600.

3. Izinkinga zobuchwepheshe zemboni ye-polyethylene (PE).

Njengamanje, ukuthuthukiswa kobuchwepheshe be-polyethylene e-China kunezinkinga ezilandelayo:

(1) Ukuntuleka kobuchwepheshe obuphambili bokukhiqiza i-polyethylene.E-China, isitshalo se-Fushun Ethylene Chemical kuphela esisebenzisa ubuchwepheshe benqubo ye-Sclairtech ukukhiqiza imikhiqizo ye-copolymerization ye-octene 1, futhi yi-Shanghai Jinshan Petrochemical Company kuphela enobuchwepheshe benqubo ye-Borealis Bostar North Star supercritical polymerization.Ubuchwepheshe benqubo ye-solvent yangaphakathi ye-Dow Chemical Co., LTD abukathulwanga e-China.

(2) Ukuntuleka kwe-alpha-olefin ethuthukisiwe ye-copolymerization yezinto zokusetshenziswa kwe-polyethylene kanye nobuchwepheshe, i-China ikwazile ukusebenzisa i-copolymerization ye-1-butene ne-1-hexene ukulungisa i-polyethylene, ku-1-octene, i-decene, i-4-methyl-1-pentene kanye okunye ukukhiqizwa kwemboni okuthuthukisiwe kwe-α-olefin akusenalutho.

(3) Izindleko eziphakeme zokukhiqiza izinto zokusetshenziswa ze-EVA, imikhiqizo embalwa enokuqukethwe okuphezulu kwe-VA, nomzamo omncane ekuthuthukisweni kwefilimu esebenzayo kanye ne-adhesive encibilikayo eshisayo.