Umthelela we-vulcanization esakhiweni nasezimpahleni zerabha:
Ukushintshashintsha kwezakhi kuyisinyathelo esibalulekile enqubweni yokukhiqiza imikhiqizo yerabha, okuyinqubo yokuguquka kusuka esakhiweni esiqondile kuya esakhiweni somzimba, okuletha izinguquko ezibanzi kufaka phakathi izakhiwo zomzimba nezemishini, ukumelana nokushisa, ukumelana nesinyibilikisi, kanye nokumelana nokugqwala, okuthuthukisa inani kanye nobubanzi bokusetshenziswa komkhiqizo.
Isakhiwo kanye nezakhiwo zerabha zishintsha kakhulu ngaphambi nangemva kokuvunguza. Ama-molecule zerabha ngaphambi kokuvunguza anesakhiwo esiqondile esinomoya oqondile kanye namandla e-van der Waals asebenza phakathi kwawo, abonisa ukuqina okuhle kanye nokunwebeka, kanye nokuncibilika. Ngesikhathi senqubo yokuvunguza, ama-molecule ayashukunyiswa futhi abhekane nokusabela kwamakhemikhali okuxhumanisa, akha isakhiwo senethiwekhi lapho ama-molecule ehlanganiswa khona ngama-chemical bonds.
Isakhiwo kanye nezakhiwo zerabha elihlanganisiwe zifaka phakathi:
Isakhiwo: izibopho zamakhemikhali, indawo yezibopho ezixhumanisayo, izinga lokuxhumanisa, kanye nokuxhumanisa
Ukusebenza: Izakhiwo zemishini (amandla okunwebeka njalo, ubulukhuni, amandla okunamathela, ukunwebeka, ukuqina), izakhiwo zomzimba, ukuzinza kwamakhemikhali ngemva kokuguqulwa kwe-vulcanization
Inqubo yokwenziwa kwe-vulcanization ingashintsha kakhulu izakhiwo zerabha. Uma sithatha irabha yemvelo njengesibonelo, njengoba izinga lokwenziwa kwe-vulcanization likhula:
Izinguquko ezimpahleni zemishini: ukwanda kokuqina, amandla okudonsa, amandla okudonsa, amandla okudabuka, kanye nobulukhuni, ukwehla kobude, ukuguqulwa okungapheli kokucindezela, kanye nokukhiqizwa kokushisa kokukhathala
Izinguquko ezimpahleni zomzimba: Ukungena komoya kanye nokungena kwamanzi kuyehla, akukwazi ukuncibilika, kungavuvukala kuphela, ukumelana nokushisa kuyathuthuka, ukuzinza kwamakhemikhali kuyathuthuka, ukusabela kokuxhumanisa kuqeda amaqembu noma ama-athomu asebenza kakhulu, okwenza ukusabela kokuguga kube nzima ukukwenza. Isakhiwo senethiwekhi sivimbela ukusabalala kwama-molecule aphansi, okwenza kube nzima ngama-radical amahhala enjoloba ukusabalala.
Izimo ze-vulcanization, okuhlanganisa ingcindezi, izinga lokushisa, kanye nesikhathi, yizinto ezibalulekile ezinquma imiphumela ye-vulcanization. Ingcindezi ye-vulcanization inomthelela obalulekile ekuvimbeleni ukwakheka kwamabhamuza ezintweni zerabha, ithuthukise ukuqina kwezinto zerabha, futhi igcwalise isikhunta ngezinto zerabha. Ingathuthukisa futhi ukunamathelana phakathi kwezingqimba ezahlukahlukene (ungqimba ngerabha kanye nongqimba lwendwangu noma ungqimba lwensimbi, ungqimba lwendwangu kanye nongqimba lwendwangu) kumkhiqizo, futhi ithuthukise izakhiwo zomzimba zerabha e-vulcanized (njengokumelana nokugoba).
Izinga lokushisa le-vulcanization liyisimo esiyisisekelo se-vulcanization reaction, esingathinta ngqo isivinini se-vulcanization, ikhwalithi yomkhiqizo, kanye nezinzuzo zomnotho zebhizinisi. Ukuphakamisa izinga lokushisa le-vulcanization kungasheshisa isivinini se-vulcanization futhi kuthuthukise ukusebenza kahle kokukhiqiza, kodwa izinga lokushisa le-vulcanization elidlulele lingaholela ezinkingeni ezifana nokuphuka kweketanga lama-molecule erabha, ukuguqulwa kwe-vulcanization, ukwehla kwezakhiwo zemishini zezinto zerabha, kanye nokwehla kwamandla ezindwangu. Kunganciphisa nesikhathi esishisayo sezinto zerabha, okubangela ukuntuleka kwerabha yendawo kanye ne-vulcanization engalingani yemikhiqizo. Ngakho-ke, ukukhethwa kwezinga lokushisa le-vulcanization kufanele kucabangele ngokuphelele izici ezifana nohlobo lwerabha, uhlelo lwe-vulcanization, kanye nesakhiwo somkhiqizo.
Ukunquma izimo ze-vulcanization - okuhlanganisa ingcindezi, izinga lokushisa, kanye nesikhathi - kuyinqubo eyinkimbinkimbi edinga ukucatshangelwa kwezinto eziningi.
Ingcindezi ye-Vulcanization: Ukukhetha ingcindezi ye-vulcanization kuncike kakhulu ekwakhiweni nasezidingweni zemikhiqizo yerabha. Ngokuvamile, ukukhethwa kwengcindezi kunqunywa kakhulu ngesimo, usayizi, kanye nobunzima bemikhiqizo yerabha. Uma ingcindezi inkulu, kulapho irabha igeleza khona kangcono, okungagcwalisa kangcono isikhunta. Ngesikhathi esifanayo, ingcindezi ephezulu ingavimbela ngempumelelo ukukhiqizwa kwamabhamuza futhi ithuthukise ukuqina komkhiqizo. Kodwa-ke, ingcindezi enkulu ingaholela ekugelezeni ngokweqile kwezinto zerabha, okubangela ukuphambuka esimweni somkhiqizo.
Izinga lokushisa le-sulfurization: Izinga lokushisa le-vulcanization lithinta ngqo isivinini kanye nekhwalithi yokusabela kwe-vulcanization. Uma izinga lokushisa liphakeme, kulapho ukusabela kwe-vulcanization kushesha khona, kodwa kungabangela ukuphuka kwamaketanga e-raber molecular, okuthinta izakhiwo zomzimba zomkhiqizo. Izinga lokushisa elifanele le-vulcanization lingaqinisekisa isivinini esihle se-vulcanization ngaphandle kokubangela umonakalo omkhulu wokushisa ezintweni zerabha.
Isikhathi sokufaka i-sulfur: Isikhathi sokufaka i-vulcanization sihlobene ngqo nokushisa kwe-vulcanization. Amazinga okushisa aphezulu angadinga izikhathi ezimfushane ze-vulcanization, kanye nokuphikisana nalokho. Ngokuvamile, ukukhethwa kwesikhathi se-vulcanization kudinga ukucabangela uhlobo lwezinto zerabha, izinga lokushisa le-vulcanization, kanye nobukhulu bomkhiqizo. Isikhathi esifanele se-vulcanization esinqunywa ngokuhlolwa singaqinisekisa ukuthi izinto zerabha zithola izakhiwo ezinhle kakhulu zemishini kanye nokumelana nokuguga.
Sekukonke, ukunquma izimo ze-vulcanization kuyinqubo edinga ukucatshangelwa okubanzi kwezinto ezahlukahlukene njengohlobo lwezinto zerabha, ukuma komkhiqizo, imishini ye-vulcanization, njll. Ekukhiqizeni kwangempela, ngokuvamile kuyadingeka ukwenza izivivinyo eziningi futhi kancane kancane kuthuthukiswe izimo ze-vulcanization ukuze kutholakale ukusebenza komkhiqizo okungcono kakhulu.
Isikhathi sokuthunyelwe: Jan-09-2024
