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HDPE ine maitiro akanakisa ekuita kwesimba rakanaka, kusimba kwakanaka, kusimba kwakanaka, uye kusagadzikana kwekuora, kusapinda kwemvura uye hunyoro-uchapupu, kupisa uye kutonhora kuramba, saka ine zvakakosha maapplication mukuvhuvhuta, kuumba jekiseni uye pombi.Nekuumbwa kwemaitiro emaindasitiri akadai sepurasitiki pachinzvimbo chesimbi, plastiki pachinzvimbo chehuni, HDPE seyakanyanya-inoshanda polyethylene zvinhu inomhanyisa kutsiva kwechinyakare zvinhu mune ramangwana.Sezvinhu zvikuru zvekurima uye kurongedza firimu, LDPE yakaderera kune LLDPE musimba remuchina, kupisa kwekushisa uye kuita kwehunyoro hwekudzivirira, uye kuramba kwekuora.Naizvozvo, kudiwa kwemusika weLLDPE kwave kukura nekukurumidza mumakore achangopfuura, zvishoma nezvishoma zvichimedza imwe chikamu chemusika cheLDPE.

1. Polyethylene (PE) indasitiri cheni

Polyethylene ndeimwe yemashanu makuru ekugadzira resin, asi zvakare yakakura kugadzirwa kwesimba remukati rekugadzira resins, inopinza kunze marudzi mazhinji.Nekuti polyethylene iri kumusoro kwe ethylene, kugadzirwa kunonyanya kuenderana neiyo naphtha nzira, uye purofiti yakafanana.

Kushandiswa kukuru kwepolyethylene kuzasi ifirimu, iro rakatora chikamu che54% chezvese zvinodiwa zve polyethylene muna 2020. Pamusoro pezvo, tubular midziyo yakaverengera 12%, midziyo isina maburi yakaverengera 12%, jekiseni rekugadzira rakaita 11%, uye waya. kudhirowa kwakaverengera 4%.

2. Ikozvino mamiriro e polyethylene (PE) indasitiri

Mumakore achangopfuura, nyika kugadzirwa polyethylene kwakawedzera gore negore.Pakazosvika 2021, huwandu hwenyika hwekugadzira polyethylene hunosvika 25,746,300 matani, zvichikwira 11.8% gore negore.

Panyaya yekugadzirwa, kubvira 2018, kugadzirwa kwepolyethylene yeChina kwakawedzera.Muna 2018, kugadzirwa kwepolyethylene yekuChina kwaisvika matani 16.26 miriyoni, uye yakasvika 22.72 miriyoni matani muna 2021, ine avhareji yegore yekukura kwechikamu che11.8% panguva iyoyo.

Kubva muna 2015 kusvika muna 2020, kushandiswa kwepolyethylene muChina zvishoma nezvishoma kwakawedzera, uye muna 2021, kushandiswa kwepolyethylene muChina kwakaderera kusvika pa37.365,000 matani, kuderera kwe3,2% gore negore.Kunyanya nekuda kwekukanganisa kwedenda uye kutonga kuviri kwesimba rekushandisa, mamwe mafekitori epasi akamisa kana kuderedza kugadzirwa.Nekuvandudzwa kwekuzvikwanira, kutsamira kwekunze kwePE kunoderera zvishoma nezvishoma.Mune ramangwana, nekuvandudzwa kwedenda uye kukura kwakasimba kwehupfumi hwepamba, kudiwa kwePE kucharamba kuchiwedzera.

Zvinoenderana nenhamba dzetsika, kubva muna Ndira kusvika Kukadzi 2022, iyo yakazara yekupinzwa kwepolyethylene yaive ingangoita 2,217,900 matani, 13.46% pasi penguva yakafanana gore rapfuura.Nyika yedu polyethylene inopinza huwandu hukuru kubva kuSaudi Arabia, iyo yakazara kupinza i475,900 matani, inoverengera 21.46%;Yechipiri iIran, ine mutengo wakazara we328,300 tons, inoverengera 14.80%;Yechitatu iUnited Arab Emirates, ine 299,600 tons inotengwa kunze kwenyika, inoverengera 13.51%.

Panyaya yezvinotengeswa kunze kwenyika, kubva muna Ndira kusvika Kukadzi 2022, huwandu hwekuChina hwekupinza polyethylene hwakaratidza kudzikira, nepo mukupesana kwakanyanya, kutengesa kunze kwenyika kwakakwira zvakanyanya.Angangoita mazana mashanu nemakumi mashanu nemazana matani epolyethylene akatengeswa kunze kwenyika muna Ndira-Kukadzi 2022, akakwira 29.76% kubva panguva imwecheteyo gore rapfuura.Kunyanya, LDPE inotumira kunze matani zviuru makumi maviri nezviviri nemazana zana, HDPE inotumira kunze kwenyika dzinenge zviuru makumi maviri nezvishanu nemazana mana ematani, uye LLDPE inotumira kunze kwenyika anenge makumi mashanu nemazana matanhatu ematani.

3. Matambudziko ehunyanzvi eindasitiri yepolyethylene (PE).

Parizvino, kukura kwe polyethylene tekinoroji muChina kune zvinotevera matambudziko:

(1) Kushaikwa kwehunyanzvi hwekugadzira polyethylene.MuChina, Fushun Ethylene Chemical chirimwa chete chinoshandisa Sclairtech process tekinoroji kugadzira octene 1 copolymerization zvigadzirwa, uye chete Shanghai Jinshan Petrochemical Company ine Borealis Bostar North Star supercritical polymerization process tekinoroji.Insite solvent process tekinoroji yeDow Chemical Co., LTD haisati yaunzwa muChina.

(2) Kushaikwa kwepamusoro α-olefin copolymerization ye polyethylene raw materials uye tekinoroji, China yakabata copolymerization ye1-butene uye 1-hexene kugadzirira polyethylene, mu 1-octene, decene, 4-methyl-1-pentene uye imwe yepamusoro α-olefin kugadzirwa kwemaindasitiri ichiri isina chinhu.

(3) Mutengo wepamusoro wekugadzira weEVA mbishi, zvigadzirwa zvishoma zvine yakakwira VA zvemukati, uye kushoma kuedza mukuvandudza firimu rinoshanda uye inopisa inonamira inonyungudika.