I-AzobisisoheptonitriTile: Izakhiwo, izinhlelo zokusebenza kanye nezixwayiso zokuphepha

Muva nje, i-Azobisisoheptonitritria iphinde yangena esweni lomphakathi. Le nto yamakhemikhali, enegama lesiNgisi 2,2'-azobis- (2,4-dimethylvaleronithe), livela njengamakristalu amhlophe, ngephuzu elincibilikayo lisukela ku-40 kuye ku-70 ℃. Kungumsunguli osondelana ngowoyela onamandla okusebenza kwe-122 kj / mol. Kuyancibilika ku-organic solvents efana ne-methanol, i-toluene ne-acetone, kepha insoluble emanzini. Ukushisa okuvusa ukuwohloka kwehora lehora le-10 kungu-51 ℃ (eToluene).

I-AzobisisoheptonitriTile isetshenziswa ikakhulukazi ku-polymerization ngobuningi, ukumiswa kwe-polymerization kanye nesixazululo se-polymerization, futhi isetshenziswa kabanzi ekukhiqizeni kwezimboni nasekucwaningeni kwesayensi. Njengoba ukubola kwalo cishe kungukuphendula oku-oda okokuqala, kwakha uhlobo olulodwa lwamahhala lwe-radical ngaphandle kokuphendula uhlangothi, kuzinzile ngokwemvelo futhi kube lula ukugcinwa nokuhamba. Kodwa-ke, kufanele kuqashelwe ukuthi ngesikhathi sokuhamba, kudinga ukuqanjwa futhi kuvikelwe ekushayweni nasekushayweni kanzima, uma kungenjalo kungadala ukuqhuma.

Ekhumbula ekuseni kakhulu ngoJulayi 22, 2011, umqeqeshi ohlala ngaphezulu osuka e-Weihai, uShandong waya eChangsha, eHuning-Zhuhai Express expressionay wakhipha umlilo. Umlilo wawunolaka kangangokuba washisa umqeqeshi egobolondweni elingenalutho. Le nhlekelele yabulala izimpilo ezingama-41 futhi yalimala abantu abangu-6, nomuntu oyedwa olimele kakhulu. Ngemuva kophenyo, imbangela yale ngozi kwakuyinkohliso nokuhamba okungekho emthethweni komkhiqizo wamakhemikhali ovuthayo wezobisisisoheptonitritriiti ngengozi yengozi. La makhemikhali ayingozi avele aqhume ngokuzumayo futhi ashiswe ngaphansi kwesenzo sezici ezinjengokukhishwa, ukungqubuzana nokukhishwa kokushisa okuvela enjini, okuholela kulesi sigameko esibuhlungu. Kamuva, kwaboshwa abantu abafanelekile baboshwe futhi baboshwa ngobugebengu ngokuya ngomthetho. Ngo-December 2013, iNkantolo Yabantu Abaphakathi kweCinyang City, isifundazwe saseHenan yenza isimemezelo sokuqala kuleli cala engozini, sigweba abantu abathembekile abaphethe izinhlawulo zokuphepha emphakathini okuyingozi nezingozi ezinkulu zezikweletu.

Lesi sigameko sizwakale i-alamu yokuphepha kokuhamba nokusetshenziswa kwe-azobisisoheptonitritritria. Amabhizinisi afanele kanye nabasebenzi kufanele bathobele imithetho efanelekile lapho besebenza i-azobisisoheptonitritritrile, baqinisekisa ukuthi izimo zokuhamba nokugcina zihlangabezana nezidingo, futhi bagweme ukuphindeka kwezinhlekelele ezifanayo. Ngasikhathi sinye, umphakathi kufanele futhi uthuthukise ukuqonda kwabo amakhemikhali ayingozi futhi ukhulise ukuqwashisa kwabo ukuphepha.