Polycarbonate(PC) waxa uu ka kooban yahay kooxaha kaarboonaytiga ee silsiladda molecular. Marka loo eego kooxaha kala duwan ee ester-ka ee qaab-dhismeedka molecular, waxaa loo qaybin karaa kooxo aliphatic, alicyclic iyo aromatic. Waxaa ka mid ah, kooxda udugga ayaa leh qiimaha ugu waxtarka badan. Midda ugu muhiimsan waa bisphenol A polycarbonate, oo leh miisaan guud oo celceliska miisaanka kelli (MW) ee 200000 ilaa 100000.

Polycarbonate waxay leedahay sifooyin dhammaystiran oo wanaagsan, sida xoogga, adkaanta, daah-furnaanta, iska caabinta kulaylka iyo iska caabinta qabowga, habayn fudud iyo dib u dhac olol. Goobaha ugu muhiimsan ee codsiga hoose waa qalabka elektaroonigga ah, biraha xaashida ah iyo baabuurta. Saddexdan warshadood waxay ku xisaabtamaan 80% isticmaalka polycarbonate. Qaybaha kale ayaa sidoo kale si weyn loogu isticmaalaa qaybaha mishiinada warshadaha, CD, baakadaha, qalabka xafiisyada, daryeelka caafimaadka, filimada, firaaqada iyo qalabka ilaalinta, oo noqday mid ka mid ah qaybaha ugu dhaqsiyaha badan u koraya ee shan caag injineernimada.
Iyadoo horumarinta tignoolajiyada deegaanka, meelaynta warshadaha PC ee Shiinaha ayaa si degdeg ah u horumaray sannadihii ugu dambeeyay. Dhamaadka 2022, miisaanka warshadaha PC ee Shiinaha ayaa kor u dhaafay 2.5 milyan oo tan / sannadkii, wax soo saarkuna waa ilaa 1.4 milyan oo tan. Waqtigan xaadirka ah, shirkadaha waaweyn ee Shiinaha waxaa ka mid ah Kesichuang (600000 tan / sannadkii), Zhejiang Petrochemical (520000 tan / sannadkii), Kiimikada Luxi (300000 tan / sannadkii) iyo Zhongsha Tianjin (260000 tan / sannadkii).
Faa'iidada seddexda hab ee PC
Waxaa jira saddex hab oo wax soo saar ah oo loogu talagalay PC: habka fosgene-ka aan ahayn, habka transesterification iyo habka fosgene-ka kondensation-ka ee wajiga dhexdooda ah. Waxaa jira kala duwanaansho cad oo ah alaabta ceeriin iyo kharashyada habka wax soo saarka. Saddexda hab ee kala duwan waxay keenaan heerar faa'iido oo kala duwan ee PC.
Shantii sano ee la soo dhaafay, faa'iidada PC-ga Shiinaha ayaa gaartay heerkii ugu sarreeyay 2018, iyadoo gaartay ilaa 6500 yuan/ton. Ka dib, heerka faa'iidada ayaa hoos u dhacay sanadba sanadka ka dambeeya. Intii lagu jiray 2020 iyo 2021, hoos u dhaca heerka isticmaalka ee uu sababay cudurka faafa awgeed, xaaladda macaashku aad buu u yaraaday, iyo habka phosgene-ka uumi isku xidhka iyo habka fosgene-ka ee aan ahayn fosgene-ka ayaa muujiyay khasaare weyn.
Dhamaadka 2022, faa'iidada habka transesterification ee wax soo saarka PC ee Shiinaha ayaa ah kan ugu sarreeya, gaarey 2092 yuan / ton, oo ay ku xigto habka phosgene polycondensation interface, oo leh faa'iidada 1592 yuan / ton, halka faa'iidada wax soo saarka aragtida ee habka fosgene aan ahayn kaliya 292 yuan/ton. Shantii sano ee la soo dhaafay, habka transesterification wuxuu had iyo jeer ahaa habka wax soo saarka ugu faa'iidada badan ee geeddi-socodka wax-soo-saarka PC ee Shiinaha, halka habka fosgene-ka aan lahayn faa'iidada ugu liidata.
Falanqaynta arrimaha saameeya faa'iidada PC
Marka hore, isbeddelka qiimaha bisphenol A iyo DMC waxay si toos ah u saameeyaan kharashka PC, gaar ahaan isbeddelka qiimaha bisphenol A, kaas oo leh miisaan saameyn ah oo ka badan 50% kharashka PC.
Marka labaad, isbedbedelka suuqa macaamiisha ee terminal, gaar ahaan isbedbedelka dhaqaale ee macroeconomic, ayaa saameyn toos ah ku leh suuqa macaamiisha PC. Tusaale ahaan, inta lagu jiro muddada 2020 iyo 2021, marka uu cudurku saameeyo, qiyaasta isticmaalka suuqa macaamiisha ee kombuyuutarrada ayaa hoos u dhacay, taas oo keentay hoos u dhac weyn oo ku yimid qiimaha PC iyo saameyn toos ah oo ku saabsan faa'iidada suuqa PC.
2022, saamaynta cudurku wuxuu noqon doonaa mid halis ah. Qiimaha saliidda cayriin ayaa sii ahaan doona hoos u dhac, suuqa macaamiisha ayaa noqon doona mid liita. Inta badan kiimikooyinka Shiinaha ma gaarin heerar macaash caadi ah. Maaddaama qiimaha bisphenol A uu yahay mid hooseeya, qiimaha wax-soo-saarka PC-ga ayaa hooseeya. Intaa waxaa dheer, qulqulka hoose ayaa sidoo kale soo kabtay ilaa xad, sidaas darteed qiimaha noocyada kala duwan ee habka wax soo saarka ee PC ayaa sii waday faa'iido xoog leh, faa'iidada ayaa si tartiib tartiib ah u soo hagaageysa. Waa badeecad naadir ah oo barwaaqo sare ku leh warshadaha kiimikada ee Shiinaha. Mustaqbalka, suuqa bisphenol A waxa uu sii ahaan doonaa mid gaabis ah, iyo Bandhigga Guga ayaa soo socda. Haddii xakamaynta faafitaanka loo sii daayo si habsami leh, baahida macaamiishu waxay ku kori kartaa mowjad, booska faa'iidada PC-ga ayaa laga yaabaa inuu sii wado inuu koro.