Polycarbonate(PC) ili ndi magulu a carbonate m'magulu a matole. Malinga ndi magulu osiyanasiyana a ester mu mawonekedwe a mabwalo, amatha kugawidwa kukhala aliatic, allicc ndi magulu onunkhira. Pakati pawo, gulu lopeka lili ndi mtengo wothandiza kwambiri. Wofunika kwambiri ndi bisphenol polycarbote, wokhala ndi zolemera zambiri zolemera (mw) wa 200000 mpaka 100000.

Polycarbonate ali ndi zinthu zokwanira, monga mphamvu, kukhazikika, kuwonekera, kukana kutentha komanso kukana kozizira, kukonza kosavuta, kusinthika kokhazikika. Minda yayikulu yogwiritsa ntchito ndi zida zamagetsi, zitsulo pazitsulo ndi magalimoto. Akaunti ya mafakitale atatuwa kwa pafupifupi 80% ya kumwa polycarbonate. Minda ina imagwiritsidwanso ntchito kwambiri m'magulu makina mafakitale, CD, ma CD, zida zamalonda, zida zamagetsi, ndipo zakhala zida zopumira kwambiri za mapulasitiki asanu.
Ndi kupita patsogolo kwa ukadaulo wakomweko, komwe kumangirira mabuku ku China kwayamba msanga kumakula msanga m'zaka zaposachedwa. Podzafika kumapeto kwa 2022, sikelo ya akampani a PC ya pachaka itatha 2.5 miliyoni / chaka, ndipo zotulutsa zimakhala pafupifupi matani 1.4 miliyoni. Pakadali pano, mabizinesi akuluakulu a China amaphatikizapo kesizuang (600000 matani / chaka), Zejiang Petrochemical (chaka 520000), chaka cha 300,000 / chaka / chaka).
Kupindulitsa kwa Njira zitatu za PC
Pali njira zitatu zopangira pc: Njira yopanda phosgene, njira yogwiritsira ntchito mankhwala osokoneza bongo komanso njira yothandizira Phosgenetion. Pali zosiyana zodziwikiratu zomwe zili ndi zopangira ndi ndalama zopangira. Njira zitatu zosiyana zimabweretsa magawo osiyanasiyana a PC.
M'zaka zisanu zapitazi, phindu la PC la China lidafika pamlingo wapamwamba mu 2018, kufikira 6500 Yuan / Toni. Pambuyo pake, kuchuluka kwa phindu kunayamba chaka ndi chaka. Pa 2020 ndi 2021, chifukwa chotsitsa kuchuluka kwa kuchuluka kwa mliri, mkhalidwe wa phindu lake, ndipo njira yolumikizira phosgene njira yotayikirira.
Pakutha kwa 2022, phindu la njira yosinthira thirastrast in PC Prosessest, kufikira 2092 Yuan njira ya polycomenetion ndi 292 YUAN / TON. M'zaka zisanu zapitazi, njira yosinthira nthawi zonse yakhala njira yopindulitsa kwambiri yopanga PC yomwe ikupanga, pomwe njira yopanda phosgene ili ndi phindu lochulukirapo.
Kusanthula kwa zinthu zomwe zikukhudza PC zopindulitsa
Choyamba, kusinthika kwa mitengo ya Riw Start Bisphenol A ndi DMC ali ndi vuto la PC mtengo wa Bisphenol A, zomwe zimapangitsa kulemera kwa 50% pa mtengo wa PC.
Chachiwiri, kusinthasintha mu msika wa ogula, makamaka kusinthasintha kwa msika wa PC. Mwachitsanzo, munthawi ya 2020 ndi 2021, pamene mliriwu umakhudza, kugwiritsa ntchito msika wa ogula pa ma PC kwachepa, zomwe zimapangitsa kuchepa kwamitengo ya PC ndikuwongolera phindu la msika wa PC.
Mu 2022, kudalirika kwa mliri udzakhala waukulu kwambiri. Mtengo wa mafuta wopanda pake upitilirabe kuchepa, ndipo msika wogula udzakhala wosauka. Mankhwala ambiri a China sanapeze phindu labwinobwino. Monga mtengo wa bisphenol afomu otsika, mtengo wopanga wa PC ndi wotsika. Kuphatikiza apo, kugwa pansi kwapezanso pamlingo wina, kotero mitengo yamitundu yopanga mitundu ya PC yakhalabe yopindulitsa kwambiri, ndipo phindu limakhala likusintha pang'onopang'ono. Ndi chinthu chosowa kwambiri chokhala ndi makampani opanga mankhwala. M'tsogolomu, bisphenool msika upitilizabe kukhala waulesi, ndipo chikondwerero cha masika chikuyandikira. Ngati kuwongolera kwa mliri kumatulutsidwa mwadongosolo, ntchito yogula imakula mu funde, ndipo malo opindulitsa a PC angapitirize kukula.