Azobisisoheptonitrile: Katundu, Kugwiritsa Ntchito ndi Machenjezo a Chitetezo

Posachedwapa, azobisisoheptonitrile yaonekeranso m'maso mwa anthu. Mankhwalawa, omwe ali ndi dzina la Chingerezi 2,2′-Azobis-(2,4-dimethylvaleronitrile), amawoneka ngati makhiristo oyera, okhala ndi kutentha koyambira 40 mpaka 70℃. Ndi choyambitsa kusungunuka kwa mafuta chokhala ndi mphamvu yoyambitsa ya 122 KJ/mol. Chimasungunuka mu zosungunulira zachilengedwe monga methanol, toluene ndi acetone, koma sichisungunuka m'madzi. Kutentha kwa kusungunuka kwa mafuta pa theka la moyo wa maola 10 ndi 51℃ (mu toluene).

Azobisisoheptonitrile imagwiritsidwa ntchito kwambiri mu polymerization ya bulk, suspension polymerization ndi solution polymerization, ndipo imagwiritsidwa ntchito kwambiri popanga mafakitale ndi kafukufuku wasayansi. Popeza kuwonongeka kwake pafupifupi ndi njira yoyamba, ndikupanga mtundu umodzi wokha wa free radical wopanda zotsatira zoyipa, ndi yokhazikika komanso yosavuta kusungidwa ndi kunyamulidwa. Komabe, ziyenera kudziwika kuti panthawi yonyamulidwa, imafunika kusungidwa mufiriji ndikutetezedwa ku kukangana kwakukulu ndi kugundana, apo ayi ingayambitse kuphulika.

Pokumbukira m'mawa kwambiri wa pa Julayi 22, 2011, basi yogona ya denga lachiwiri yomwe inkayenda kuchokera ku Weihai, Shandong kupita ku Changsha, Hunan pa msewu waukulu wa Beijing-Zhuhai Expressway inayaka moto mwadzidzidzi. Motowo unali woopsa kwambiri moti unatentha basiyo mpaka kuphulika. Tsoka ili linapha anthu 41 ndikuvulaza anthu 6, ndipo munthu m'modzi anavulala kwambiri. Pambuyo pofufuza, chifukwa cha ngoziyi chinali kunyamula ndi kunyamula mankhwala oyaka moto omwe angabisisoheptonitrile pa galimotoyo. Mankhwala owopsa awa anaphulika mwadzidzidzi ndi kutentha chifukwa cha zinthu monga kutulutsa, kukangana ndi kutentha kuchokera ku injini, zomwe zinapangitsa kuti pakhale ngoziyi. Pambuyo pake, anthu okhudzidwawo anamangidwa ndikumangidwa motsatira lamulo. Mu Disembala 2013, Khothi la Anthu Omwe Ali Pakati pa Mzinda wa Xinyang, ku Henan Province linapereka chigamulo choyamba pa mlanduwu wa ngoziyi, ndikuweruza anthu okhudzidwawo kuti alandire chilango chofanana chifukwa cha milandu yoika pachiwopsezo chitetezo cha anthu pogwiritsa ntchito njira zoopsa komanso ngozi zazikulu.

Chochitikachi chapereka chenjezo pa chitetezo cha mayendedwe ndi kugwiritsa ntchito azobisisoheptonitrile. Makampani ndi antchito oyenerera ayenera kutsatira malamulo oyenera akamagwiritsa ntchito azobisisoheptonitrile, kuonetsetsa kuti njira zoyendetsera ndi kusungiramo zinthu zikukwaniritsa zofunikira, ndikupewa kubwereranso kwa mavuto ofanana. Nthawi yomweyo, anthu ayeneranso kumvetsetsa bwino za mankhwala oopsa ndikudziwitsa anthu za chitetezo chawo.