IVinyl acetate (VAc), eyaziwa ngokuba yi-vinyl acetate okanye i-vinyl acetate, lulwelo olungenambala kunye nolubonakalayo kwiqondo lokushisa kunye noxinzelelo.Njengenye yezona zinto zisetyenziswa kakhulu kwimizi-mveliso yezinto eziphilayo, i-VAc inokuvelisa i-polyvinyl acetate resin (PVAc), i-polyvinyl alcohol (PVA), i-polyacrylonitrile (PAN) kunye nezinye izinto eziphuma kuyo ngokusebenzisa i-polymerization yayo okanye i-copolymerization nezinye ii-monomers.Ezi ziphuma zisetyenziswa ngokubanzi kulwakhiwo, kwimpahla elukiweyo, koomatshini, kumayeza kunye nezilungiseleli zomhlaba.

Uhlalutyo lulonke lweVinyl Acetate Industry Chain

Umlambo ophezulu we-vinyl acetate industry chain ikakhulu iqulunqwe ngezinto eziluhlaza ezifana ne-acetylene, i-acetic acid, i-ethylene kunye ne-hydrogen, njl. Iindlela eziphambili zokulungiselela zihlulwe zibe ziindidi ezimbini: enye yindlela ye-petroleum ethylene, eyenziwe kwi-ethylene iacetic acid kunye nehydrogen, kwaye ichatshazelwa kukuguquguquka kwamaxabiso eoli ekrwada.Enye kukulungiswa kwe-acetylene ngegesi yendalo okanye i-calcium carbide, kwaye emva koko kunye ne-acetic acid synthesis ye-vinyl acetate, igesi yendalo ixabisa kancinci kune-calcium carbide.I-Downstream ikakhulu ukulungiswa kwe-polyvinyl alcohol, i-latex emhlophe (i-polyvinyl acetate emulsion), i-VAE, i-EVA kunye ne-PAN, njl., apho i-polyvinyl alcohol iyona mfuno iphambili.

1. Umsinga wezinto eziluhlaza zevinyl acetate

I-Acetic acid yimathiriyeli ekrwada ephambili phezulu kwe-VAE, kwaye ukusetyenziswa kwayo kunonxibelelwano oluqinileyo ne-VAE.Idatha ibonisa ukuba ukususela ngo-2010, ukusetyenziswa kwe-acetic acid e-China iyonke kuyakhula, kuphela ngo-2015 ngo-2015 yi-industry boom ezantsi kunye notshintsho lwemfuno esezantsi luye lwehla, i-2020 ifikelele kwi-7.2 yezigidi zeetoni, ukunyuka kwe-3.6% xa kuthelekiswa no-2019. i-acetate ye-vinyl acetate esezantsi kunye nezinye iimveliso zokutshintsha isakhiwo somthamo, izinga lokusetyenziswa liye landa, ishishini le-acetic acid lilonke liya kuqhubeka likhula.

Ngokubhekiselele kwizicelo ezisezantsi, i-25.6% ye-acetic acid isetyenziselwa ukuvelisa i-PTA (i-terephthalic acid ecocekileyo), i-19.4% ye-acetic acid isetyenziselwa ukuvelisa i-vinyl acetate, kunye ne-18.1% ye-acetic acid isetyenziselwa ukuvelisa i-ethyl acetate.Kwiminyaka yakutshanje, ipateni yeshishini le-acetic acid derivatives izinzile.IVinyl acetate isetyenziswa njengenye yezona ndawo zibaluleke kakhulu kwisicelo esisezantsi se-acetic acid.

2. Isakhiwo esisezantsi se-vinyl acetate

I-acetate ye-vinyl isetyenziselwa ukuvelisa i-polyvinyl alcohol kunye ne-EVA, njl. I-ethylene vinyl acetate - i-ethylene copolymer (EVA), njl njl. Iipolymers ezibangelwayo zingasetyenziswa njengezinto zokuncamathelisa, iphepha okanye i-ejenti yokulinganisa ilaphu, iipeyinti, ii-inki, ukusetyenzwa kwesikhumba, i-emulsifiers, iifilimu ezinyibilikayo emanzini, kunye nezilungiseleli zomhlaba kwimichiza, i-textile. inoluhlu olubanzi lwezicelo kwiikhemikhali, ezilukiweyo, kushishino olulula, ukwenza iphepha, ulwakhiwo kunye nemimandla yeemoto.Idatha ibonisa ukuba i-65% ye-vinyl acetate isetyenziselwa ukuvelisa i-polyvinyl alcohol kunye ne-12% ye-vinyl acetate isetyenziselwa ukuvelisa i-polyvinyl acetate.

Uhlalutyo lwemeko yangoku ye-vinyl acetate market

1, Umthamo wemveliso yeVinyl acetate kunye nenqanaba lokuqalisa

Ngaphezulu kwe-60% yesakhono sokuvelisa i-vinyl acetate yehlabathi sigxile kwingingqi yase-Asiya, ngelixa amandla emveliso ye-vinyl acetate yaseTshayina enza malunga ne-40% yomthamo wemveliso yehlabathi kwaye lelona lizwe livelisa i-vinyl acetate.Xa kuthelekiswa nendlela ye-acetylene, indlela ye-ethylene inoqoqosho ngakumbi kunye nokusingqongileyo, kunye nokucoceka okuphezulu kwemveliso.Ekubeni amandla ombane oshishino lweekhemikhali zaseTshayina ikakhulu axhomekeke kumalahle, ukuveliswa kwe-vinyl acetate ikakhulu kusekelwe kwindlela ye-acetylene, kwaye iimveliso ziphantsi.Umthamo wemveliso ye-vinyl acetate yasekhaya yandiswe kakhulu ngexesha le-2013-2016, ngelixa lihlala lingatshintshi ngexesha le-2016-2018.Umzi-mveliso we-vinyl acetate ka-2019 waseTshayina ubonisa imeko yokuxhotyiswa kwesakhiwo, kunye nomthamo ogqithisileyo kwiiyunithi zenkqubo ye-calcium carbide acetylene kunye nokugxilwa kweshishini eliphezulu.Ngo-2020, amandla emveliso ye-vinyl acetate yaseTshayina ye-2.65 yezigidi zeetoni / ngonyaka, flat unyaka nonyaka.

2, Ukusetyenziswa kweVinyl acetate

Ngokuphathelele ukusetyenziswa, i-vinyl acetate yaseChina iyonke ibonisa ukunyuka okunyukayo, kwaye imarike ye-vinyl acetate e-China iye yanda ngokuthe ngcembe ngenxa yokukhula kwemfuno ye-EVA ephantsi, njl. Idatha ibonisa ukuba, ngaphandle kwe-2018 , Ukusetyenziswa kwe-vinyl ye-acetate yaseTshayina ngezinto ezifana nokunyuka kwamaxabiso e-acetic acid, ukusetyenziswa kuye kwancipha, ukususela ngo-2013 i-vinyl ye-acetate ye-acetate ye-2013 imfuno yemakethe ye-vinyl ye-acetate iye yanda ngokukhawuleza, ukusetyenziswa kuye kwanda unyaka nonyaka, njengoko i-2020 iphantsi ifikelele kwi-1.95 yezigidi zeetoni, ukunyuka. ye-4.8% xa kuthelekiswa nowama-2019.

3, Ixabiso eliphakathi kwimarike yevinyl acetate

Ukusuka kwimbono yamaxabiso emarike ye-vinyl acetate, echatshazelwa ngumthamo ogqithisileyo, amaxabiso oshishino ahlala ezinzile ngo-2009-2020.Ngowama-2014 ngokucutheka konikezelo lwaphesheya kweelwandle, amaxabiso emveliso yoshishino anyuke kakhulu, amashishini asekhaya ayandisa ngenkuthalo imveliso, nto leyo ekhokelele kubuchule obugqithisileyo.Amaxabiso e-acetate e-Vinyl awela kakhulu kwi-2015 kunye ne-2016, kwaye kwi-2017, echaphazelekayo yimigaqo-nkqubo yokukhusela indalo, amaxabiso emveliso yoshishino aphakama ngokukhawuleza.Ngo-2019, ngenxa yobonelelo olwaneleyo kwimakethi ye-acetic acid enyukayo kunye nokucotha kwemfuno kushishino lolwakhiwo olusezantsi, amaxabiso emveliso yoshishino ehle kakhulu, kwaye ngo-2020, achatshazelwa ngubhubhane, ixabiso eliphakathi leemveliso lehla ngakumbi, kwaye ukusukela ngoJulayi ka-2021, amaxabiso kwimarike yasempumalanga afikelele ngaphezu kwe-12,000 Ukunyuka kwexabiso kukhulu, okubangelwa ikakhulu ngenxa yempembelelo yeendaba ezilungileyo zamaxabiso e-oyile ekrwada enyukayo kunye nonikezelo lwemarike oluphantsi ngokubanzi olubangelwa kukuvalwa kwefektri okanye ukulibaziseka.

Isishwankathelo seeNkampani ze-Ethyl Acetate

I-Ethyl acetate yamashishini aseTshayina icandelo lezityalo ezine zeSinopec zinomthamo we-1.22 yezigidi zeetoni / ngonyaka, ezibalelwa kwi-43% yelizwe, kwaye i-Anhui Wanwei Group ineetoni ezingama-750,000 / ngonyaka, ibalwa kwi-26.5%.Icandelo elityalwe kwamanye amazwe i-Nanjing Celanese i-350,000 yeetoni / ngonyaka, i-akhawunti ye-12%, kunye necandelo labucala le-Inner Mongolia Shuangxin kunye ne-Ningxia Dadi iyonke i-560,000 yeetoni / ngonyaka, i-akhawunti ye-20%.Abavelisi be-vinyl acetate bangoku basekhaya bafumaneka ikakhulu kuMntla-ntshona, eMpuma yeChina nakumazantsi-ntshona, kunye nomthamo waseMntla-ntshona othatha i-51.6%, i-East China ibalwa kwi-20.8%, uMntla we-China uthatha i-6.4% kunye ne-Southwest accounting ye-21.2%.

Uhlalutyo lwe-vinyl acetate outlook

I-1, ukukhula kwemfuno ye-EVA esezantsi

I-EVA esezantsi kwe-vinyl acetate ingasetyenziswa njengefilimu ye-PV cell encapsulation.Ngokutsho kwenethiwekhi yamandla amatsha ehlabathi, i-EVA evela kwi-ethylene kunye ne-vinyl acetate (VA) ii-monomers ezimbini nge-copolymerization reaction, iqhezu elikhulu le-VA kwi-5% -40%, ngenxa yokusebenza kwayo kakuhle, imveliso isetyenziswa ngokubanzi kwi-foam, esebenzayo. lahla ifilimu, ifilimu yokupakisha, imveliso yokuvuthela inaliti, ii-agent ezixutywayo kunye ne-adhesives, ucingo kunye nentambo, ifilimu ye-photovoltaic cell encapsulation film kunye ne-adhesives eshushu enyibilikayo, njl. , kunye ne-diversification ye-photovoltaic module size, i-double-side-glass-glass-module rate yokungena kwimodyuli yanda kakhulu, imfuno yeemodyuli ze-photovoltaic ngaphaya kokukhula okulindelekileyo, ukukhuthaza ukukhula kweemfuno ze-EVA.Kulindeleke ukuba i-800,000 yeetoni zomthamo we-EVA ziya kufakwa kwimveliso kwi-2021. Ngokoqikelelo, ukukhula kweetoni ze-800,000 ze-EVA umthamo wokuvelisa kuya kuqhuba ukukhula konyaka kweetoni ze-144,000 zemfuno ye-vinyl acetate, eya kuqhuba ukukhula konyaka. yeetoni ze-103,700 zemfuno ye-acetic acid.

I-2, iVinyl acetate overcapacity, iimveliso eziphezulu zisafuna ukuthengiswa ngaphandle

I-China inomthamo opheleleyo we-vinyl acetate, kwaye iimveliso eziphezulu zisafuna ukuthengiswa ngaphandle.Okwangoku, ukunikezelwa kwe-vinyl acetate e-China kudlula imfuno, kunye nokugqithisa ngokubanzi kunye nemveliso egqithisileyo exhomekeke ekusetyenzisweni kwamanye amazwe.Ukusukela ekwandisweni komthamo we-vinyl acetate wokuvelisa ngo-2014, ukuthunyelwa kwe-vinyl acetate yaseTshayina kuye kwanda kakhulu, kwaye ezinye iimveliso ezivela kumazwe angaphandle zithathelwe indawo ngumthamo wemveliso yasekhaya.Ukongeza, izinto ezithunyelwa ngaphandle eTshayina ikakhulu ziimveliso ezikumgangatho ophantsi, ngelixa ukuthengiswa ngaphandle ikakhulu kuyimveliso ephezulu.Okwangoku, i-China isadinga ukuthembela ekungenisweni kwemveliso ye-vinyl acetate ephezulu, kwaye imboni ye-vinyl acetate isenayo indawo yophuhliso kwimarike yemveliso ephezulu.