Misika yamankhwala yakwana yatsala pang'ono kuchepera pafupifupi chaka chimodzi. Kutalika kwakutali kotereku, pomwe mitengo yamafuta imakhalabe, yadzetsa kusathana ndi mtengo wa maulalo ambiri mu makina opanga mapangidwe. The tercerals inayake mu unyolo wa mafakitale, zomwe zimapanikizika kwambiri pa mtengo wa unyolo wa mafakitale. Chifukwa chake, mankhwala ambiri a mankhwala ali pachiwopsezo mtengo wokwera mtengo koma msika waulesi, womwe umapangitsa kuti pakhale chuma chosauka cha mankhwala ambiri.
Mtengo wamsika wa vinyl acetate wapitilizabe kuchepa. M'zaka zaposachedwa, mtengo wamsika wa vinyl acetate wachoka pa 14862 Yuan / Toni mu June 2023 mpaka mu June 2023, ndikuchepetsa nthawi yotsika mpaka 5990 yuan / ton. Kuchokera pamachitidwe a zaka zingapo zapitazi, mtengo wotsika kwambiri m'mbiri unapezeka mu Epulo 2020, mtengo wotsika kwambiri udawonekera pa Novembala 2021, ndipo mtengo wapamwamba kwambiri udawonekera pa 16727 Yuan / Toni / Toni.

Ngakhale mtengo wa vinyl acetate wakhala akuchepa chaka chotsatizana, phindu lopanga vinyl acetate limakhala lalitali komanso labwino. Kodi nchifukwa ninji vinyl angakhale otukuka kwambiri?
Njira zosiyanasiyana za vinyl acetate phindu ndi zotayika
Malinga ndi kusintha kwa phindu la njira ya Vinyl acetate wopangidwa ndi njira ya Vinyl acetate yopangidwa ndi njira yopindulitsa m'zaka zingapo zapitazi, mtengo wopindulitsa kwambiri wafika 50% kapena kupitilira apo, Ndipo kuchuluka kwa phindu kuli pafupifupi 15%. Itha kuwoneka kuti ethylene yochokera ku Vinyl ya vinyll yakhala yopindulitsa kwambiri m'zaka ziwiri zapitazi, ndikupambana bwino komanso phindu lokhazikika.

Kuchokera pakuwona kwa calbium carbide njira ya vinyl acetate, zaka ziwiri zapitazi, kupatula phindu lofunikira kuyambira pa March 2022 mpaka pa Julayi 2022, nthawi zonse zinakhala mu Julayi 2022. 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%. Itha kuwoneka kuti kutukuka kwa njira ya calcium carbide kwa vinyl acetate ndi osauka, ndipo zinthu zonse zikuwoneka zotayika.

Itha kuwoneka kuti si chofala wamba cha vinyl acetate kukhala pamlingo wapamwamba. Njira yokhayo yopangira vinyll yokha yopanga vinyl yokha pakadali pano ili pamalo opindulitsa, pomwe njira ya Carbide yakhala ikutayika zaka zingapo zapitazi.
Kusanthula kwa Kupindulitsa Kwambiri kwa Ethyle Aceperate Wopanga Vinyl Acetate
1. Gawo la ndalama zopangira zopangira zimasiyanasiyana mu njira zosiyanasiyana zopangira. Mu ethylene wochokera ku Vinyl acetate wopanga, kumwa kwa ethylene ndi 0,35 ndi kugwiritsa ntchito utoto acetic acetic acid ndi 0.72. Malinga ndi kuchuluka kwa mtengo mu June 2023, kuchuluka kwa ethylene ku Ethylene pochokera ku Vinyl Acetate kupanga 37%, pomwe acetic acetic acid ndi 45%. Chifukwa chake, kusinthasintha kwamtengo kwa acetic acetic acid kuli ndi vuto lalikulu pakusintha kwa ma ethyl aceperate kupanga, kutsatiridwa ndi Ethylene.
Ponena za mtengo wa calcium carbide njira ya vinyl acetate, calcium carbide ma akaunti pafupifupi 47% ya mtengo wa calcium carbide, ndi glacial acetic acemate njira ya Victium Carbidete ya Vinyl Acetate. Chifukwa chake, mu calcium carbide njira ya vinyl acetate, kusintha kwa mtengo wa calcium carbide kumakhudza kwambiri mtengo, womwe ndi wosiyana kwambiri ndi mtengo wowononga wa ethylene.
2. Kutsika kwakukulu kwa zinthu zopangira ethylene ndi glaicletic acid kwadzetsa kuchepa kwakukulu kwa mtengo. Malinga ndi deta yoyenera, chaka chatha, mtengo wa Cfr Northeast Asia Ethylene watsika ndi 33%, ndipo mtengo wa actoc acid wachepa ndi 32%. Komabe, mtengo wopanga wa vinyl acetate pogwiritsa ntchito njira ya calbium carbide ndi yocheperako ndi mtengo wa calcium carbide. M'mbuyomu, mtengo wa calbium carbide wachepa ndi 25%.
Chifukwa chake, malinga ndi njira ziwiri zopangira, mtengo wazomera wa njira ya ethyl acetate wachepa kwambiri, ndipo kuchepetsa mtengo ndikoposa njira ya calcium carbide.

3. Ngakhale mtengo wa vinyl acetate wayamba kuchepa, kuchepa sikuli kofunikira ngati mankhwala ena. Chaka chatha, mtengo wa vinyl acetate watsika ndi 59%, yomwe imawoneka kuti kuchepa kwakukulu, koma mtengo wa mankhwala ena wachepa kwambiri.
Vinyl acetate nthawi zonse amakhala ndi malire opindulitsa, makamaka chifukwa cha kuchepa kwa mtengo womwe umayambitsidwa ndi kuchepa kwa mitengo yaiwisi, m'malo mothandizidwa ndi msika wa ogula chifukwa cha mitengo yake. Ichi ndi momwe zilirinso pakali pano potumiza mtengo mu vinyl acetate makampani opanga. Kuchokera momwe ziliri pamsika wa Mankhwala a China munthawi yochepa, ndizovuta kusinthitsa dziko lofooka la msika wamankhwala wopanda mankhwala osokoneza bongo. Zikuyembekezeredwa kuti mtengo wamtengo wa vinyl acetate azikhalabe ndi mfundo zophunzitsira, makamaka zopanga polyethylene ndi zopangidwa mwaluso, zidzasungidwa pochepetsa phindu la vinyl acetate.