Tlhahlobo ea ketane ea indasteri ea PVC le pono ea 'maraka
Polyvinyl chloride (PVC) ke e 'ngoe ea li-resin tse hlano tse sebelisoang ka kakaretso.E thehiloe ke polymerization ea mahala ea vinyl chloride monomers.Tšebeliso ea PVC e boemong ba boraro har'a li-resin tse hlano tse sebelisoang ka kakaretso.E le e 'ngoe ea mefuta ea bohlokoa ea bokamoso ba indasteri ea lik'hemik'hale, PVC e hlahlobisisoa pele pampiring ena.Taba ea bobeli, konteraka e kholo ea PVC e bile le ho fokotseha ho hoholo ho tloha ka Phuptjane, mme e kene sethaleng sa ho kopanya mefuta e mengata.Lehlakore la tlhokeho le ntse le le boemong ba nnete e fokolang.Nako ea tlhōrō ea September e fetile, 'me keketseho ea tlhokahalo ka October e hloka ho netefatsoa.Haeba ho eketseha ha tlhokahalo ka October ho tlisa ho fokotseha ho hlakileng ha thepa, 'me ho lebeletsoe ho khutla ha theko ea calcium carbide ka lehlakoreng la litšenyehelo ho tla tlisa tšehetso e tlase, PVC e lebeletsoe hore e tšehetsoe.E kentsoeng ka rebound e nyane.Leha ho le joalo, karolo ea hona joale ea phepelo ea PVC e na le matla a mangata a macha a tlhahiso kotareng ea bone.Haeba lehlakore la tlhokahalo le sa bone ntlafatso e kholo, thepa e ka 'na ea lula e le boemong bo phahameng,' me PVC e tla boloka ts'ebetso e fokolang.
01. Ketane ea indasteri ea PVC - qetello ea thepa e tala
Pele ho tsohle, kenyelletso e khutšoanyane ea polyvinyl chloride, polyvinyl chloride (Polyvinyl Chloride, PVC ka nako e khutšoanyane), ke phofo e tšoeu e se nang chefo, e se nang monko o nang le botsitso bo phahameng ba lik'hemik'hale le polasetiki e ntle.Ho ea ka mokhoa oa ho fumana vinyl chloride monomer, e ka aroloa ka mokhoa oa calcium carbide, mokhoa oa ethylene le mokhoa oa ho tsoa linaheng tse ling (EDC, VCM) monomer (mokhoa oa ethylene le mokhoa oa monomer o tsoang linaheng tse ling hangata o bitsoa mokhoa oa ethylene), har'a eo mokhoa oa ethylene o leng bongata lefatšeng., naha ea heso e itšetlehile haholo ka mokhoa oa calcium carbide oa PVC, karolo ea PVC e hlahisoang ke mokhoa oa calcium carbide e fetang 70%.Ke hobane'ng ha naha ea rona e fapane le mekhoa ea machaba ea tlhahiso ea PVC?
Ho tloha tseleng ea tlhahiso, calcium carbide (CaC2, calcium carbide ke ntho ea bohlokoa ea motheo ea lik'hemik'hale tse tala, haholo-holo e sebelisetsoang ho hlahisa khase ea acetylene. E boetse e sebelisoa ho organic synthesis, oxyacetylene welding, joalo-joalo) ka mokhoa oa khalsiamo carbide litlaleho tse ka bang 70% ea litšenyehelo tsa tlhahiso, E 'ngoe ea lisebelisoa tse ka sehloohong tsa calcium carbide, orchid, e entsoe ka mashala.Naha e na le litšobotsi tsa mashala a mangata, oli e fokolang le khase e nyenyane.Ka hona, ts'ebetso ea tlhahiso ea lapeng ea PVC e thehiloe haholo ho calcium carbide.E ka boela ea bonoa mokhoa oa theko ea khalsiamo carbide le theko ea lehae ea PVC hore e le thepa e ka sehloohong e tala ea PVC, kamano ea theko pakeng tsa tse peli e phahame haholo.
Linaheng tsa machaba, tsela ea oli le khase ea tlhaho (mokhoa oa ethylene) e sebelisoa haholo-holo, kahoo theko le theko ea 'maraka ha li lumellane.
Le hoja naha ea heso e na le leano le khahlanong le ho lahla ho PVC, bahlahisi ba malapeng ba ntse ba ka sebelisa mokhoa oa ethylene ho hlahisa PVC ka ho reka oli e tala, ethylene le VCM monomers.Mekhoa e fapaneng ea tlhahiso ea PVC e na le litsela tse fapaneng tsa tšusumetso lehlakoreng la eona la litšenyehelo.Ka mokhoa o ts'oanang, liphetoho tsa litheko tsa oli e tala le ethylene qetellong ea ts'ebetso ea ethylene li tla ama boikemisetso ba tlhahiso ea bahlahisi ba PVC ba malapeng ka mokhoa oa calcium carbide.
02. Ketane ea indasteri ea PVC - tšebeliso e tlaase ea noka
Mabapi le tlhokahalo, lihlahisoa tse tlaase tsa PVC li ka aroloa ka mefuta e 'meli: lihlahisoa tse thata le lihlahisoa tse bonolo.Lihlahisoa tse thata li kenyelletsa liphaephe, mamati le lifensetere tse nang le profil, lishiti tse thata le maqephe a mang.Har'a tsona, liphaephe le li-profile ke tlhokahalo ea bohlokoa ka ho fetisisa e ka tlaase ho metsi, e ikarabellang ho feta 50%.E le eona ea bohlokoa ka ho fetisisa ho ea tlaase, tlhokahalo ea liphaephe e ntse e hōla ka potlako.Litaelo tse etelletseng pele tsa thekiso ea matlo le kaho li phahame, 'me tšebeliso ea thepa e tala ea PVC e eketsehile haholo.Lihlahisoa tse bonolo li kenyelletsa lisebelisoa tsa ho koahela fatše, lifilimi, lisebelisoa tsa cable, letlalo la maiketsetso, lieta le lisebelisoa tse le mong, joalo-joalo Lilemong tsa morao tjena, tlhokahalo ea ho romela thepa ea fatše ea PVC e eketsehile, e fetohileng tataiso e ncha bakeng sa kholo ea tlhokahalo ea PVC.Mabapi le tlhokahalo ea ho qetela, thekiso ea matlo le meaho e fetohile sebaka sa bohlokoahali moruong oa naha se amang PVC, se nkang karolo e ka bang 50%, se lateloa ke meaho, thepa e tšoarellang, thepa e lahloang ea bareki le temo.
03. Maikutlo a Mmaraka
Ho ea ka pono ea ketane ea indasteri, ka lehlakoreng la thepa e tala, litheko tsa hona joale tsa mashala a futhumetseng le k'habone e putsoa li maemong a holimo, 'me li theoha mariha.Haeba mariha a batang a khutla, theko ea mashala a chesang le carbon e putsoa e ka 'na ea phahama ka holimo, e leng se tla khanna theko ea calcium carbide holimo.Hona joale, theko ea calcium carbide e kheloha theko ea mashala a chesang le carbon e putsoa, haholo hobane theko ea PVC e tlaase ea calcium carbide e fokola.Hona joale, baetsi ba calcium carbide butle-butle ba ekelitse tahlehelo ea bona tlas'a khatello ea litšenyehelo.Matla a bargaining a baetsi ba calcium carbide a lekanyelitsoe, empa tabeng ea ho atolosoa ha tahlehelo ea lik'hamphani, monyetla oa ho romelloa ha fektheri ea calcium carbide ka theko e phahameng e eketseha.Sena se boetse se fana ka tšehetso ea litšenyehelo tse tlase bakeng sa litheko tsa PVC.
Karolong ea bone, phepelo ea phepelo e lebelletsoe ho ba matla.Karolong ea bone, ho tla ba le bokhoni ba tlhahiso ea PVC e ncha ea limilione tse 1.5, eo limilione tse 1.2 li nang le bonnete ba tsona.Lithane tse 400,000 tsa matla a macha a tlhahiso li tla lokolloa;ho phaella moo, Jintai e na le lithane tse 300,000 tsa nako ea tlhahiso e ntse e sa tsitsa, ka kakaretso, khatello ea phepelo ea PVC karolong ea bone e batla e le khōlō.
'Nete e fokolang ka lehlakoreng la tlhokahalo le thepa e phahameng ea anti-seasonal ke mabaka a ka sehloohong a theko e fokolang ea PVC.Re lebelletse pono ea 'maraka, nako ea tlhoro ea tlhokeho ea khauta ea setso ea PVC e fetile.Le hoja tlhokahalo ka September e ntlafetse, e ntse e le tlaase ho feta kamoo ho neng ho lebeletsoe kateng.Tlhokahalo e tobane le teko ka Mphalane.Haeba tlhokahalo e ntlafala 'me litšenyehelo tse tlase li tšehetsoa, PVC e ka khutla hanyane.Leha ho le joalo, ho kopantsoe le keketseho e kholo ea tlhahiso karolong ea bone le khatello e kholo ea phepelo, ho lebeletsoe hore PVC e boloke ts'ebetso e fokolang.
Nako ea poso: Sep-27-2022