Izindaba

I-PC iwuhlobo lwepulasitiki yobunjiniyela esebenza kahle kakhulu kuzo zonke izici. Inezinzuzo ezinkulu ekuphikisweni komthelela, ukumelana nokushisa, ukubumba ukuqina kwe-dimensional kanye nokubuyiswa komlilo. Ngakho-ke, isetshenziswa kabanzi ezintweni zikagesi, izimoto, imishini yezemidlalo neminye imikhakha. Kodwa-ke, amaketanga e-PC amangqamuzana aqukethe inani elikhulu lamasongo e-benzene, okwenza kube nzima ukuthi amaketanga e-molecular anyakaze, okuholela ekuncibilikeni kwe-viscosity enkulu ye-PC. Phakathi nenqubo yokucubungula, amaketanga e-PC yamangqamuzana aqondiswe. Ngemuva kokucubungula, amanye amaketanga ama-molecular angagxili ngokuphelele emkhiqizweni athambekele ekubuyeleni esimweni sawo semvelo, okuzobangela inani elikhulu lokucindezeleka okusalayo emikhiqizweni ebunjiwe yomjovo we-PC, okuholela ekuqhekekeni ngesikhathi sokusetshenziswa komkhiqizo noma ukugcinwa; ngesikhathi esifanayo, i-PC iyinto ebucayi kakhulu. Lokhu kushiyeka kukhawulela ukwanda okwengeziwe kweIzinhlelo zokusebenza ze-PC.

Ukuze uthuthukise ukuzwela kwe-notch kanye nokuqhekeka kwengcindezi kwe-PC futhi uthuthukise ukusebenza kwayo kokucubungula, ama-toughening agents avame ukusetshenziselwa ukwenza i-PC ibe nzima. Njengamanje, izengezo ezivame ukusetshenziselwa ukuguqulwa kokuqina kwe-PC emakethe zifaka i-acrylate toughening agents (ACR), i-methyl methacrylate-butadiene-styrene toughening agents (MBS) kanye nama-toughening agents akhiwe nge-methyl methacrylate njengegobolondo ne-acrylate ne-silicone njengomongo. Lawa ma-ejenti aqinisayo ahambisana kahle ne-PC, ngakho-ke ama-ejenti aqinisayo angahlakazwa ngokulinganayo ku-PC.

Leli phepha likhethe izinhlobo ezi-5 ezihlukene zama-toughening agents (M-722, M-732, M-577, MR-502 kanye ne-S2001), futhi lahlola imiphumela ye-toughening agents ku-PC thermal oxidation aging properties, 70 ℃ amanzi abilayo izakhiwo zokuguga, kanye nokushisa okumanzi (85 ℃/85%) izakhiwo zokuguga ngokushintsha izinga lokugeleza kwe-PC, izinga lokushisa lokushintsha ukushisa kanye nezakhiwo zemishini.

Izinto zokusebenza eziyinhloko:

I-UP-6195: ukuhlolwa kokuguga kokushisa okumanzi (izinga lokushisa eliphezulu neliphansi limanziIgumbi lokuhlola ukushisa);

I-UP-6196: ukuhlolwa kwesitoreji esiphezulu sokushisa (i-oven enembile);

I-UP-6118: ukuhlolwa kokushaqeka kwezinga lokushisa (ukushaqeka okubandayo nokushisayoigumbi lokuhlola);

I-UP-6195F: Umjikelezo wokushisa ophakeme nophansi we-TC (igumbi lokuhlola lokushintsha izinga lokushisa elisheshayo);

I-UP-6195C: ukuhlolwa kokudlidliza kwezinga lokushisa nomswakama (amagumbi amathathu okuhlola aphelele);

I-UP-6110: ukuhlolwa kokucindezeleka okuphezulu okusheshisiwe (ingcindezi ephezulu iyasheshaigumbi lokuhlola ukuguga);

I-UP-6200: ukuhlolwa kokuguga okubonakalayo kwe-UV (igumbi lokuhlola ukuguga kwe-ultraviolet);

I-UP-6197: ukuhlolwa kokugqwala kwesifutho sikasawoti (igumbi lokuhlola isifutho sikasawoti).

Ukuhlolwa kokusebenza nokuhlukaniswa kwesakhiwo:

● Hlola izinga lokuncibilika kokugeleza kwesisindo ngokwezinga le-ISO 1133, isimo sokuhlola singu-300 ℃/1. 2 kg;

● Hlola amandla okuqina nobude ngesikhathi sekhefu lezinto ngokwezinga le-ISO 527-1, izinga lokuhlola lingu-50 mm/min;

● Hlola amandla okuguquguquka kanye ne-flexural modulus yezinto ngokwezinga le-ISO 178, izinga lokuhlola ngu-2 mm/min;

● Hlola amandla omthelela wenotshi wento ebonakalayo ngokwezinga le-ISO180, sebenzisa umshini wokwenza isampula yenotshi ukuze ulungise inothi emise okuka-“V”, ukujula kwenotshi kungu-2 mm, futhi isampuli igcinwa ku--30 ℃ amahora angu-4 ngaphambili. ukuhlolwa komthelela wezinga lokushisa eliphansi;

● Hlola izinga lokushisa lokushintsha ukushisa kwezinto ngokwezinga le-ISO 75-1, izinga lokushisa lingu-120 ℃/min;

●Ukuhlolwa kwe-Yellowness index (IYI):ubude bohlangothi lokubumba lomjovo bukhulu kuno-2 cm, ukujiya bungu-2 mm Ipuleti lombala oyisikwele lingaphansi kokuhlolwa kokuguga kwe-oxygen eshisayo, futhi umbala wepuleti lombala ngaphambi nangemuva kokuguga uhlolwa nge-spectrophotometer. Ithuluzi lidinga ukulinganiswa ngaphambi kokuhlolwa. Ipuleti ngalinye lombala likalwa izikhathi ezi-3 futhi inkomba ephuzi yepuleti lombala iyarekhodwa;

●Ukuhlaziywa kwe-SEM:Ucu lwesampula olubunjwe ngomjovo luyasikwa, igolide lifuthwe endaweni yalo, futhi i-morphology yalo ibonwa ngaphansi kwe-voltage ethile.