I-Vinyl acetate (VAC) yinto ebalulekileyo yekhemikhali yezinto eziphilayo kunye ne-molecular formula ye-C4H6O2, eyaziwa ngokuba yi-vinyl acetate kunye ne-vinyl acetate. I-acetate ye-vinyl isetyenziswa kakhulu kwimveliso ye-polyvinyl alcohol, i-ethylene-vinyl acetate copolymer (i-EVA resin), i-ethylene-vinyl alcohol copolymer (i-EVOH resin), i-vinyl acetate-vinyl chloride copolymer (i-vinyl chloride resin), i-latex emhlophe, i-acrylic fiber kunye nezinye iimveliso. Isetyenziswa kakhulu kwimimandla yefayibha eyenziweyo, yokwaleka, i-slurry, ifilimu, ukusetyenzwa kwesikhumba, ukuphuculwa komhlaba, kwaye inethemba elibanzi lophuhliso kunye nokusetyenziswa. Iindlela zenkqubo ye-vinyl acetate ziquka indlela ye-carbide acetylene, indlela yegesi yendalo ye-acetylene kunye ne-petroleum ethylene method. Indlela ye-carbide acetylene isetyenziswa kakhulu e-China, kwaye amandla okuvelisa indlela ye-carbide acetylene iya kufikelela kwi-62% kwi-2020.
Kwiminyaka yakutshanje, imfuno yentengiso ye-vinyl acetate e-China ibonise indlela ephezulu yokunyuka. Ngokwezibalo ze-China Chemical Fiber Industry Association, ngo-2016, ukusetyenziswa okubonakalayo kwe-vinyl acetate e-China kwakuyi-1.94 yezigidi zeetoni, ezonyuke zaya kwi-2.33 yezigidi zeetoni ngo-2019. 2.16 yezigidi zeetoni; Ngokuzinziswa kwemeko yobhubhane kwisiqingatha sesibini sonyaka kunye nokubuyiswa ngokukhawuleza kwemveliso yezoqoqosho, imfuno ye-vinyl acetate iphinde yachacha ngokukhawuleza ukusuka kwisiqingatha sesibini sika-2020 ukuya kwisiqingatha sokuqala sika-2021, ixabiso lemarike lenyuka kakhulu, kwaye imboni yabuyela.
Isakhiwo semfuno ye-vinyl acetate e-China izinzile, kunye ne-polyvinyl alcohol, i-polyvinyl acetate, i-VAE lotion kunye ne-EVA resin njengemveliso ephambili. Ngo-2020, umlinganiselo we-polyvinyl alcohol kwisakhiwo sokusetyenziswa kwasekhaya kwe-vinyl acetate uya kufikelela kwi-65%, kwaye umlinganiselo opheleleyo we-polyvinyl acetate, i-VAE lotion kunye ne-EAV resin iya kuba yi-31%.
Okwangoku, iChina inomthamo omkhulu wevinyl acetate emhlabeni. Ngo-2020, umthamo waseTshayina we-vinyl acetate uya kufikelela kwi-2.65 yezigidi zeetoni, kubalwa malunga ne-40% yomthamo opheleleyo wehlabathi. Kwiminyaka yakutshanje, umthamo wasemva kwishishini le-vinyl acetate laseTshayina liye larhoxa kancinci, kwaye nomthamo ophucukileyo wongezwa ukuzalisa isithuba semarike. Ngokuqhubekeka kolwakhiwo lonikezelo lweshishini, imveliso ye-vinyl ye-acetate yaseTshayina ibonise ukukhula ngokubanzi. Ngokwezibalo ze-China Chemical Fiber Industry Association, imveliso ye-vinyl ye-acetate yasekhaya iye yanda ukusuka kwi-1.91 yezigidi zeetoni ngo-2016 ukuya kwi-2.28 yezigidi zeetoni ngo-2019, kunye nezinga lokukhula lonyaka elihlanganisiweyo ye-5.98%; Ngo-2020, ngenxa yexabiso le-oyile ephantsi yamazwe ngamazwe, iindleko zemveliso ye-petroleum ethylene indlela yaphesheya yancitshiswa, ukungenisa kwe-vinyl acetate e-China kwanda, kwaye ukuveliswa kwe-vinyl acetate yasekhaya yehla ukuya kwi-1.99 yezigidi zeetoni; Ukusukela kwisiqingatha sesibini sika-2020, kunye nokunyuka koqoqosho lwehlabathi kunye nokunyuka kwamaxabiso eoli kumazwe ngamazwe, ukuveliswa kweshishini le-vinyl acetate lasekhaya liye lafudumala.