Iindaba zeshishini
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Isetyenziselwa ntoni iHDPE?
I-HDPE isetyenziswa kwiimveliso kunye nokupakishwa okufana neejagi zobisi, iibhotile zokucoca, iibhafu zemajarini, izitya zokulahla inkunkuma kunye nemibhobho yamanzi.Kwiityhubhu ezinobude obahlukeneyo, i-HDPE isetyenziselwa ukutshintshwa kweetyhubhu zodaka zekhadibhodi ezinikezelweyo ngenxa yezizathu ezibini eziphambili.Enye, ikhuseleke kakhulu kuneetyhubhu zekhadibhodi ezibonelelweyo kuba ukuba iqokobhe belingangasebenzi kakuhle kwaye ligqabhuke ngaphakathi kwityhubhu ye-HDPE, ityhubhu ayisayi kuqhekeka.Isizathu sesibini kukuba ziyaphinda zisebenziseke zivumela abayili ukuba benze iirakhi ezininzi zodaka.I-Pyrotechnicians ayikukhuthazi ukusetyenziswa kwetyhubhu ye-PVC kwiityhubhu zodaka ngenxa yokuba ithande ukuqhekeka, ithumela i-shards yeplastiki kubabukeli abanokwenzeka, kwaye ayiyi kubonakala kwi-X-reyi. -
Ikhadi eliluhlaza le-PLA liba sisisombululo esithandwayo esizinzileyo kwishishini lezemali.
Iplastiki eninzi kakhulu iyadingeka ukwenza amakhadi ebhanki minyaka yonke, kunye neenkxalabo zokusingqongileyo ezikhulayo, uThales, inkokeli yokhuseleko oluphezulu, uye wavelisa isisombululo.Ngokomzekelo, ikhadi elenziwe nge-85% ye-polylactic acid (PLA), ephuma kwingqolowa;enye indlela yokuqalisa entsha kukusebenzisa izicubu ezivela kwimisebenzi yokucoca unxweme ngentsebenziswano neqela lokusingqongileyo iParley for the Oceans.Inkunkuma yeplastiki eqokelelweyo – “i-Ocean Plastic®” njengesixhobo esivelisa izinto ezintsha zokwenziwa kwamakhadi;kukwakho nokhetho lwamakhadi ePVC aphinda asetyenziswe enziwe ngokupheleleyo kwinkunkuma yeplastiki ukusuka kushishino lokupakisha nokushicilela ukunciphisa ukusetyenziswa kweplastiki entsha. -
Uhlalutyo olufutshane lwe-China yokuncamathelisa i-pvc resin yokungenisa kunye nedatha yokuthumela ngaphandle ukusuka ngoJanuwari ukuya kuJuni.
Ukusukela ngoJanuwari ukuya kuJuni ka-2022, ilizwe lam lingenise iitoni ezingama-37,600 zentlama yokuncamathelisa, ukuhla nge-23% xa kuthelekiswa nexesha elifanayo kulo nyaka uphelileyo, kwaye yathumela ngaphandle iitoni ezingama-46,800 zentlaka yokuncamathelisa, ukwanda ngama-53.16% xa kuthelekiswa ne ngexesha elifanayo kunyaka ophelileyo.Kwisiqingatha sokuqala sonyaka, ngaphandle kwamashishini avalayo ukuze alungiswe, umthwalo wokusebenza weplanti yentlama yasekhaya uhleli ukwinqanaba eliphezulu, unikezelo lwempahla lwanele, kwaye imakethi iqhubekile nokuhla.Abavelisi bafuna ii-odolo zokuthumela ngaphandle ukuze banciphise ungquzulwano lwemalike yasekhaya, kwaye umthamo wokuthumela ngaphandle unyuke kakhulu. -
Unokwazi njani ukuba iplastiki yipolypropylene?
Enye yeendlela ezilula zokwenza uvavanyo lwedangatye kukusika isampulu yeplastiki uyitshise ekhabhathini yomsi.Umbala wedangatye, ivumba kunye neempawu zokutsha zinokunika isalathiso sohlobo lweplastiki: 1. I-polyethylene (PE) - I-Drips, ivumba njenge-candlewax; yecandlewax; 3. Ipolymethylmethacrylate (PMMA, “Perspex”) – Amaqamza, amaqamza, ivumba elimnandi; Idangatye elithambileyo, ivumba le-marigolds; -
Iimbotyi ze-Mars M ziphehlelela ukupakishwa kwamaphepha e-PLA anokuboliseka e-China.
Ngo-2022, uMars waphehlelela itshokolethi yokuqala yeM&M epakishwe kwiphepha elidityanisiweyo elonakeleyo eTshayina.Yenziwe ngezinto ezinokonakala ezifana nephepha kunye ne-PLA, ithatha indawo yokupakishwa kweplastiki ethambileyo yexesha elidlulileyo.Ukupakishwa kudlulile i-GB / T Indlela yokuzimisela ye-19277.1 iqinisekisile ukuba phantsi kweemeko zokudibanisa i-industrial, inokunciphisa ngaphezu kwe-90% kwiinyanga ze-6, kwaye iya kuba yi-non-biologically toxic, i-carbon dioxide kunye nezinye iimveliso emva kokuthotywa. -
Ukuthunyelwa ngaphandle kwePVC yaseTshayina kuhlala kuphezulu kwisiqingatha sokuqala sonyaka.
Ngokwezibalo zamasiko zamva nje, ngoJuni 2022, umthamo welizwe lam lokungenisa iPVC umgubo ococekileyo wawuyi-29,900 yeetoni, ukwanda kwe-35.47% ukusuka kwinyanga edlulileyo kunye nokunyuka konyaka-ngonyaka we-23.21%;ngoJuni 2022, i-PVC yelizwe lam i-powder ecocekileyo yokuthunyelwa kwe-powder yayiyi-223,500 yeetoni, Ukuncipha kwenyanga-ngenyanga kwakuyi-16%, kwaye ukunyuka konyaka-nyaka kwaba yi-72.50%.Umthamo wokuthunyelwa kwempahla kumazwe angaphandle uqhubekile nokugcina umgangatho ophezulu, othomalalise unikezelo oluninzi oluthe kratya kurhwebo lwangaphakathi ukuya kumlinganiselo othile. -
Yintoni iPolypropylene (PP) ?
I-Polypropylene (PP) yi-thermoplastic eqinile, eqinile, kunye ne-crystalline.Yenziwe kwi-propene (okanye ipropylene) i-monomer.Le ntlaka yomgqa wehydrocarbon yeyona polima ikhaphukhaphu kuzo zonke iiplastiki zemveliso.I-PP iza njenge-homopolymer okanye njenge-copolymer kwaye inokunyuswa kakhulu kunye nezongezo.Ifumana isicelo ekupakishweni, kwimoto, kumthengi okulungileyo, kwezonyango, kwiifilim eziphosiweyo, njl. njl inzuzo yeendleko kwiibhotile zokubumba (vs. PET). -
Yintoni iPolyethylene (PE) ?
I-Polyethylene (PE) , ekwabizwa ngokuba yi-polythene okanye i-polyethene, yenye yeeplastiki ezisetyenziswa ngokuqhelekileyo kwihlabathi.Iipolyethylenes zihlala zinesakhiwo somgca kwaye zaziwa njengeepolima ezongezelelweyo.Olona setyenziso luphambili lwezi polima zokwenziwa kukupakishwa.I-Polyethelyne isoloko isetyenziselwa ukwenza iingxowa zeplastiki, iibhotile, iifilim zeplastiki, izikhongozeli kunye nee-geomembranes.Kunokuqatshelwa ukuba ngaphezu kwe-100 lezigidi zeetoni ze-polyethene ziveliswa ngonyaka ngeenjongo zorhwebo kunye nezoshishino. -
Uhlalutyo lokusebenza kwemarike yelizwe lam yePVC yokuthumela ngaphandle kwisiqingatha sokuqala sika-2022.
Kwisiqingatha sokuqala sika-2022, imakethi yePVC yokuthumela ngaphandle yonyuka unyaka nonyaka.Kwikota yokuqala, echatshazelwa kukudodobala koqoqosho lwehlabathi kunye nobhubhane, iinkampani ezininzi zasekhaya ezithumela ngaphandle zibonise ukuba imfuno yeediski zangaphandle yancitshiswa.Nangona kunjalo, ukususela ekuqaleni kukaMeyi, ngokuphuculwa kwemeko yobhubhane kunye nothotho lwamanyathelo aziswa ngurhulumente waseTshayina ukukhuthaza ukuhla koqoqosho, izinga lokusebenza kwamashishini emveliso ye-PVC yasekhaya iye yaphakama kakhulu, imarike yokuthumela ngaphandle kwe-PVC iye yafudumala. , kwaye imfuno yeediski zangaphandle iye yanda.Inani libonisa indlela ethile yokukhula, kwaye ukusebenza ngokubanzi kweemarike kuphuculwe xa kuthelekiswa nexesha elidlulileyo. -
Isetyenziselwa ntoni iPVC?
I-Economic, i-polyvinyl chloride eguquguqukayo (i-PVC, okanye i-vinyl) isetyenziswe kwiintlobo ezahlukeneyo zezicelo kwisakhiwo kunye nokwakhiwa, ukhathalelo lwempilo, i-electronics, i-automobile kunye namanye amacandelo, kwiimveliso ezivela kwimibhobho kunye ne-siding, iingxowa zegazi kunye ne-tubing, ukuya kwintambo kunye ukugquma kwentambo, iinxalenye zesistim ye-windshield kunye nokunye. -
Iprojekthi yokwandisa i-ethylene ye-Hainan Refinery yesigidi seetoni kunye nokucokisa sele iza kunikezelwa.
IProjekthi ye-Hainan yokuRefining kunye ne-Chemical Ethylene Project kunye neProjekthi yokuRefining kunye noKwandiswa kweProjekthi ibekwe kwiNdawo yoPhuhliso lwezoQoqosho lwaseYangpu, kunye notyalo-mali olupheleleyo olungaphezu kweebhiliyoni ezingama-28 zeeyuan.Ukuza kuthi ga ngoku, iyonke inkqubela yokwakha ifikelele kuma-98%.Emva kokuba iprojekthi igqityiwe kwaye ifakwe kwimveliso, kulindeleke ukuba iqhube ngaphezulu kwe-100 yeebhiliyoni zeeyuan kumashishini asezantsi.I-Olefin Feedstock Diversification kunye ne-High-end Downstream Forum iya kubanjelwa e-Sanya ngoJulayi 27-28.Ngaphantsi kwesimo esitsha, ukuphuhliswa kweeprojekthi ezinkulu ezifana nePDH, kunye ne-ethane cracking, ikamva elizayo lobuchwepheshe obutsha obufana neoli ekrwada ngokuthe ngqo kwi-olefins, kunye nesizukulwana esitsha samalahle / i-methanol kwi-olefins iya kuxoxwa. -
I-MIT: I-polylactic-glycolic acid copolymer microparticles yenza isitofu sokugonya "ukuziphucula".
Izazinzulu kwi-Massachusetts Institute of Technology (MIT) zinika ingxelo kwijenali yamva nje ye-Science Advances ukuba zenza idosi enye yokugonya ukuzikhulisa.Emva kokuba isitofu sokugonya sitofwe emzimbeni womntu, sinokukhutshwa izihlandlo ezininzi ngaphandle kwesidingo sokudubula kwe-booster.Isitofu sokugonya esitsha kulindeleke ukuba sisetyenziswe ngokuchasene nezifo ukusuka kumasisi ukuya kwi-Covid-19.Kuxelwa ukuba olu gonyo lutsha lwenziwe ngamasuntswana e-poly(lactic-co-glycolic acid) (PLGA).I-PLGA yikhompawundi eyonakakayo yepolymer ephilayo, engeyotyhefu kwaye inokuhambelana kakuhle kwezinto eziphilayo.Ivunyiwe ukuba isetyenziswe kwii-Implants, sutures, izinto zokulungisa, njl
