Zinawonedwa kuti mitengo yazomwe zimapangidwa ndi mankhwala pamsika ikupitilira kuchepa, zimapangitsa kuti pakhale njira yabwino kwambiri yolumikizira makampani opanga zamankhwala. Mitengo yamitengo yokhazikika yachulukitsa yachulukitsa mtengo pa kampani yopanga mapangidwe, ndipo chuma cha mankhwala ambiri ndi osauka. Komabe, mtengo wamsika wa vinyl acetate wayambanso kuchepa, koma kupereka phindu lakale lakhalabe chuma chambiri ndi chabwino. Chifukwa chake, bwanjivinyl acetatemsika umakhala wolimba kwambiri?

Kuchedwa pakati pa June 2023, mtengo wamsika wa vinyl acetate ndi 6400 Yuan / Toni. Malinga ndi mitengo yamtengo wapatali ya njira zopangira za ethylene, njira ya calbium ya ethylene ya ethyle acetate wa calbium carbidete wa quinyl. Ngakhale kuchepa mosalekeza mu mtengo wa vinyl acetate kwa chaka, malire a machiritso a ethyl acelete amakhala okwera kwambiri, nthawi zina, kukhala chinthu chochuluka kwambiri. Mosiyana ndi izi, njira ya calcium carbizide ya vinyl ya vinyl yakhala yotayika kwazaka ziwiri zapitazi.

Mwa kusanthula zosintha mu maygins a Ethylene adazikidwa ndi calbium carbide polojekiti ya vinyll yapitayo nthawi zonse, ndi malire opambana Phindu la malire pafupifupi 15%. Izi zikuwonetsa kuti Ethylee wa Chinyengo cha Vinyl wakhala wopindulitsa mzaka ziwiri zapitazi, ndikukhala ndi chitukuko chabwino komanso phindu lokhazikika. M'zaka ziwiri zapitazi, kupatula phindu lofunikira kuyambira pa March 2022 mpaka pa Julayi 2022, njira ya calcium carbide ya vinyl ya vinyl yakhala yotayika nthawi yonseyi. Pofika pa June 2023, mabatani ang'onoang'ono a calcium carbide njira ya vinyl adatayika 20% yotayika, ndipo malire a phindu la calbium cartate zaka ziwiri zapitazi panali 0,2%. Kuchokera pamenepa, zitha kuwoneka kuti kutukuka kwa njira ya calcium carbide kwa vinyl acetate ndi osauka, ndipo zinthu zonse zikuwoneka zotayika.

Mwa kusanthula kwina, zifukwa zazikulu zopindulira kwambiri za Ethyl Aceperate zopanga za vinyll zimatsata motere: Choyamba, kuchuluka kwa zinthu zopangira zinthu zosiyanasiyana zopanga zosiyanasiyana. Mu ethylene njira ya vinyl acetate, kumwa kwa ethylene ndi 0,35, ndi kumwa kwa unit acetic acetic acid ndi 0.72. Malinga ndi kuchuluka kwa mtengo mu June 2023, maakaunti a Ethylene kwa pafupifupi 37% ya mtengo wa ethylene wochokera ku Vinyl acetate acetate ac maakaunti a 45%. Chifukwa chake, pakutha mphamvu ya mtengo wa acetic acetic acitikizani kwambiri pakusintha kwa ma ethyl acetate, wotsatiridwa ndi Ethylene. Pankhani yokhudza mtengo wa calcium carbide njira ya vinyl ya calbium calbium calbide njira ya calbium carbide mendulo 35% . Chifukwa chake, mu calcium carbide njira ya vinyl acetate, kusintha kwa calcium carbide kumakhudza kwambiri mtengo wake. Izi ndizosiyana kwambiri ndi zomwe zimawononga njira ya ethylene.

Kachiwiri, kuchepa kwa zinthu zopangira ethylene ndi glacletic asidi kunali kofunikira, kumapangitsa kuchepa kwakukulu kwa mtengo. Chaka chatha, mtengo wa CFR kumpoto chakum'mawa kwa Asia Ethylene watsika ndi 33%, ndipo mtengo wa actoc acid wachepa ndi 32%. Komabe, mtengo wa vinyl acetate wopangidwa ndi katswiri wa calcium carbide makamaka amakakamizidwa ndi mtengo wa calcium carbide. Chaka chathachi, mtengo wa calcium carbide wagwa ndi 25%. Chifukwa chake, kuchokera pakuwona njira ziwiri zopanga za vinyl acetate wopangidwa ndi njira ya Ethylene yatsika kwambiri, ndipo kuchepetsa mtengo ndikoposa njira ya calcium calbide.

Ngakhale mtengo wa vinyl acetate wakana, kutsika kwake sikuli kofunikira ngati mankhwala ena. Malinga ndi kuwerengera, chaka chatha, mtengo wa vinyl acetate wagwa ndi 59%, yomwe ingaoneke yofunika, koma mankhwala ena adziwa zambiri. Mkhalidwe wofooka wamankhwala aku China ndiwovuta kusintha kwakukulu. Zikuyembekezeka kuti mtsogolomo, pamakhala mwayi waukulu kuti phindu la msika wa ogula, makamaka zinthu monga mowa wa polyvinyl ndi Eva.

Pali kuthekera kwakukulu pamtengo wamakampani omwe alipo kale, ndipo zinthu zambiri zimakhala pamsika wokwera mtengo koma msika waulesi, zomwe zimapangitsa kuti pakhale chuma chosauka. Komabe, ngakhale atakumana ndi zovuta, msika wa vinyl acetate wasunga phindu lalikulu, makamaka chifukwa cha kuchuluka kosiyanasiyana kwa mitengo yaiwisi yopanga ndi kutsika mtengo komwe kumachitika chifukwa cha mitengo yaiwisi. Komabe, malo ofooka amtsogolo amtsogolo a Mankhwala aku China ndi ovuta kusintha kwenikweni. Zikuyembekezeka kuti mtsogolomo, pamakhala mwayi waukulu kuti phindu la msika wa ogula, makamaka zinthu monga mowa wa polyvinyl ndi Eva.