Ocwaningweni lwe-kinetic lokusabela kwamakhemikhali okusheshayo, ukuqapha okubonwayo okuku-inthanethi kwe-in-situ ukuphela kwendlela yocwaningo
I-spectroscopy ye-in situ Raman inganquma ngokwesilinganiso i-kinetics ye-base-catalyzed hydrolysis ye-methyltrimethoxysilane.Ukuqonda okujulile kokusabela kwe-hydrolysis ye-alkoxysilanes kubaluleke kakhulu ekuhlanganisweni kwama-silicone resins.Ukusabela kwe-hydrolysis kwe-alkoxysilanes, ikakhulukazi i-methyltrimethoxysilane (MTMS), ngaphansi kwezimo ze-alkaline kuyashesha kakhulu, futhi ukusabela kunzima ukuqeda, futhi ngesikhathi esifanayo, kukhona ukusabela okuphambene ne-hydrolysis ohlelweni.Ngakho-ke, kunzima kakhulu ukunquma i-kinetics yokusabela usebenzisa izindlela ezijwayelekile zokuhlaziya ezingaxhunyiwe ku-inthanethi.I-In-situ Raman spectroscopy ingasetshenziswa ukukala izinguquko zokuqukethwe kwe-MTMS ngaphansi kwezimo zokusabela ezihlukene futhi kwenziwe ucwaningo lwe-alkali-catalyzed hydrolysis kinetics.Inezinzuzo zesikhathi esifushane sokulinganisa, ukuzwela okuphezulu kanye nokuphazamiseka okuncane, futhi ingaqapha ukusabela okusheshayo kwe-hydrolysis ye-MTMS ngesikhathi sangempela.
Ukuqapha kwesikhathi sangempela senqubo yokunciphisa ye-MTMS eluhlaza ekuphenduleni kwe-silicone ukuqapha inqubekelaphambili yokusabela kwe-hydrolysis.
Izinguquko ekugxiliseni kwe-MTMS ngesikhathi sokusabela ngaphansi kwezimo ezihlukene zokuqala, izinguquko ekugxiliseni kwe-MTMS ngesikhathi sokuphendula emazingeni okushisa ahlukene.
Isikhathi sokuthumela: Jan-22-2024