Ngokombono wezinto ezingavuthiwe, intengo ye-o-xylene ye-Sinopec isalokhu izinzile okwamanje, kuyilapho ukusebenza kwemakethe kwe-naphthalene yezimboni, impahla eluhlaza ye-anhydride esekelwe ku-naphthalene, ibuthakathaka futhi amanani ayaqhubeka nokuhla. Ukwehla kwamanani entengo yezinto zokusetshenziswa kwenze buthaka ukusekela kwezindleko ze-phthalic anhydride, okunikeza indawo yokuthi intengo ye-phthalic anhydride esekelwe ku-naphthalene yehle.
Ngokombono wokuhlinzekwa kanye nesidingo, imboni ye-ortho-phthalic anhydride isebenza ezingeni eliphezulu, futhi ukunikezwa kwemakethe kwanele, kodwa isidingo esingezansi sibuthakathaka, okuholele ekungalinganini okubi kakhulu phakathi kokuhlinzeka nokufunwa. Ngenxa yesidingo esinganele emakethe esibulalayo, izinga lokusebenza lezinkampani ze-plasticizer ezansi ngomfula ze-phthalic anhydride alikalulami ngokugcwele ezingeni eliphakeme ngaphambi kukaNcibijane, futhi ukusetshenziswa kwe-phthalic anhydride kunqunyelwe. Izinga eliphezulu lokusebenza lemboni ye-phthalic anhydride liholele ekuqongeleleni okuqhubekayo kwengcindezi yokusungula. Esimweni sokugcwala ngokweqile, intengo yemakethe ye-phthalic anhydride ingaphansi kwengcindezi ephansi.
Ethintwa ukungalingani phakathi kokunikezwa kanye nesidingo kanye nokuthambekela kokwehla kwamanani entengo, umuzwa wemakethe we-phthalic anhydride nawo ubonise ukusabela okwandayo kokucindezeleka. Abahwebi nezinkampani ezisezansi nomfula zisanethemba ngemakethe yesikhathi esizayo futhi zinomdlandla ophansi wokuthenga. Ukuze kugwenywe ubungozi, ezinye izinkampani zikhetha ukunciphisa ukuthenga noma ukubambezeleka kwezinhlelo zokuthenga, okuqhubekisela phambili isimo se-bearish emakethe.
Uma sibheka phambili, sithintwe ukwehla okukhulu kwentengo ye-naphthalene yezimboni, ukusekelwa kwezindleko zemakethe ye-phthalic anhydride kuye kwaba buthaka, okuhambisana nomuzwa onamandla wokulinda nokubona emakethe, ukwehla kwengcindezi emananini esikhathini esifushane kubalulekile. Umehluko wentengo ye-phthalic anhydride kusuka kunqubo ye-ortho-naphthalene kulindeleke ukuthi unwebe, futhi ukumelana nokuthunyelwa kwemakethe kukhulu uma kuqhathaniswa. Uhlangothi lokuhlinzekwa kwemakethe lusabhekene nengcindezi ethile, ephinde icindezele intengo ye-phthalic anhydride. Ngesikhathi esifanayo, isidingo semakethe eyinhloko ye-plasticizer ephansi iyaqhubeka nokuba buthakathaka, okwenza kube nzima ukwakha ukusekelwa okuphumelelayo kwemakethe, futhi umphumela wokuphikisa ukucindezela uhlala ungashintshi. Ngomqondo wokuqaphela wemboni, isimo sokuhweba emakethe singase siqhubeke silula. Sekukonke, ngenxa yokuphakama kwezici eziningi ezingezinhle njengokwesekwa okwanele ohlangothini lwezindleko, isidingo esibuthakathaka nokumelana nokuthunyelwa, kulindeleke ukuthi isikhungo samandla adonsela phansi emakethe yasekhaya ye-phthalic anhydride sizoqhubeka nokwehla esikhathini esifushane, futhi umkhuba jikelele uzoba buthaka ikakhulukazi.
Isikhathi sokuthumela: Mar-20-2025