Umthelela we-vulcanization esakhiweni nasezimpahleni:
Enqubweni yokukhiqiza imikhiqizo yenjoloba, i-vulcanization iyisinyathelo sokugcina sokucubungula.Kule nqubo, irabha ibhekana nochungechunge lokuphendula kwamakhemikhali okuyinkimbinkimbi, ishintsha isuka esakhiweni esiwumugqa iye esakhiweni esimise okomzimba, ilahlekelwe ipulasitiki yenjoloba exubile futhi ibe nokunwebeka okuphezulu kwenjoloba exhumene, ngaleyo ndlela ithole okuhle kakhulu ngokomzimba nangokomshini. izakhiwo, ukumelana nokushisa Ukusebenza, ukumelana ne-solvent kanye nokumelana nokugqwala kuthuthukisa inani lokusetshenziswa kanye nobubanzi bokusetshenziswa kwemikhiqizo yenjoloba.
Ngaphambi kwe-vulcanization: ukwakheka komugqa, ukusebenzisana kwe-intermolecular nge-van der Waals force;
Izakhiwo: ipulasitiki enkulu, ukuphakama okuphezulu, nokuncibilika;
Ngesikhathi se-vulcanization: i-molecule iqalwa, futhi ukusabela okuxhumanisa kwamakhemikhali kwenzeka;
Ngemuva kwe-vulcanization: isakhiwo senethiwekhi, i-intermolecular enezibopho zamakhemikhali;
Isakhiwo:
(1) Isibopho samakhemikhali;
(2) Isikhundla sebhondi yokuxhumanisa;
(3) Izinga lokuxhumanisa;
(4) Ukuxhumanisa;.
Izakhiwo:
(1) Izakhiwo zikaMechanical (amandla okwelulwa njalo. Ukuqina. Amandla okuqina. Ukwelulwa. Ukunwebeka);
(2) Izinto ezibonakalayo
(3) Ukuzinza kwamakhemikhali ngemva kokwenziwa vulcanization;
Izinguquko kuzakhiwo zenjoloba:
Ukuthatha irabha yemvelo njengesibonelo, ngokwanda kwedigri ye-vulcanization;
(1) Izinguquko ezicini zemishini (i-elasticity. Amandla okudabula. Amandla obude. Amandla okudabula. Ukuqina) ayanda (i-elongation. Isethi yokucindezelwa. Ukukhiqiza ukushisa kokukhathala) kuncipha
(2) Izinguquko ezimpahleni ezibonakalayo, ukungena komoya kanye nokungena kwamanzi kuncipha, akukwazi ukuncibilika, kukhukhumale kuphela, kuthuthukise ukumelana nokushisa.
(3) Izinguquko ekuzinzeni kwamakhemikhali
Ukwanda kokuzinza kwamakhemikhali, izizathu
a.I-cross-linking reaction yenza amaqembu asebenza ngamakhemikhali noma ama-athomu angabe esaba khona, okwenza kube nzima ukuthi ukuguga kuqhubeke.
b.Isakhiwo senethiwekhi sivimbela ukusakazeka kwama-molecule aphansi, okwenza kube nzima ukuthi ama-radicals enjoloba asakazeke.
Ukukhethwa Nokunqunywa Kwezimo Ze-Vulcanization Yerabha
1. Ukucindezela kwe-Vulcanization
(1) Kudingeka kusetshenziswe ingcindezi lapho imikhiqizo yenjoloba ihlaselwa.Inhloso ukuthi:
a.Vimbela irabha ekukhiqizeni amabhamuza futhi uthuthukise ukubumbana kwenjoloba;
b.Yenza izinto zenjoloba zigeleze futhi ugcwalise isikhunta ukuze wenze imikhiqizo ngamaphethini acacile
c.Thuthukisa ukunamathela phakathi kwesendlalelo ngasinye (ungqimba olunamathelayo nongqimba lwendwangu noma ungqimba lwensimbi, ungqimba lwendwangu nongqimba lwendwangu) emkhiqizweni, futhi uthuthukise izakhiwo ezibonakalayo (njengokumelana nokuguquguquka) kwe-vulcanizate.
(2) Ngokuvamile, ukukhethwa kokucindezela kwe-vulcanization kufanele kunqunywe ngokusho kohlobo lomkhiqizo, ifomula, ipulasitiki nezinye izici.
(3) Ngokuyisisekelo, le mithetho elandelayo kufanele ilandelwe: ipulasitiki inkulu, ingcindezi kufanele ibe mncane;ubukhulu bomkhiqizo, inani lezendlalelo, kanye nesakhiwo esiyinkimbinkimbi kufanele sibe sikhulu;ukucindezela kwemikhiqizo emincane kufanele kube kuncane, futhi ngisho nokucindezela okuvamile kungasetshenziswa
Kunezindlela eziningana vulcanization kanye pressurization:
(1) Iphampu ye-hydraulic idlulisela ukucindezela esibunjeni ngokusebenzisa i-vulcanizer eyisicaba, bese idlulisela ukucindezela kunhlanganisela yenjoloba isuka ekubunjeni.
(2) Icindezelwe ngokuqondile i-vulcanizing medium (njengesitimu)
(3) Ukucindezelwa umoya ocindezelwe
(4) Umjovo ngomshini womjovo
2. Izinga lokushisa le-Vulcanization kanye nesikhathi sokuphulukisa
Izinga lokushisa le-vulcanization yisimo esiyisisekelo kakhulu sokusabela kwe-vulcanization.Izinga lokushisa le-vulcanization lingathinta ngokuqondile isivinini sokuvuthwa, ikhwalithi yomkhiqizo kanye nezinzuzo zezomnotho zebhizinisi.Izinga lokushisa le-vulcanization liphezulu, isivinini se-vulcanization siyashesha, futhi ukusebenza kahle kokukhiqiza kuphezulu;ngaphandle kwalokho, ukusebenza kahle kokukhiqiza kuphansi.
Ukwenyusa izinga lokushisa le-vulcanization kungabangela izinkinga ezilandelayo;
(1) Ibangela ukuqhekeka kweketango lengqamuzana lenjoloba kanye nokuguqulwa kwe-vulcanization, okuholela ekwehleni kwezakhiwo zemishini zenhlanganisela yenjoloba
(2) Yehlisa amandla ezindwangu emikhiqizweni yenjoloba
(3) Isikhathi sokushiswa kwenhlanganisela yenjoloba sifinyezwa, isikhathi sokugcwalisa sincishisiwe, futhi umkhiqizo untula ngokwengxenye ku-glue.
(4) Ngoba imikhiqizo ewugqinsi izokwandisa umehluko wokushisa phakathi kwengaphakathi nangaphandle komkhiqizo, okuholela ekuvuvukeni okungalingani.
Isikhathi sokuthumela: May-18-2022