Ukuya kwinqanaba elithile, i-zinc stearate inokuthatha indawo ye-stearic acid kunye ne-zinc oxide kancinci, kodwa i-stearic acid kunye ne-zinc oxide kwirabha azinakusabela ngokupheleleyo kwaye zineziphumo zazo.
I-Zinc oxide kunye ne-stearic acid zenza inkqubo yokusebenza kwinkqubo ye-sulfur vulcanization, kwaye imisebenzi yayo ephambili yile ilandelayo:
1. Inkqubo yokuvuselela i-vulcanization:
I-ZnO isabela ne-SA ukuvelisa isepha ye-zinc, ephucula ukunyibilika kwe-ZnO kwirabha, kwaye isebenzisana nee-accelerators ukwenza i-complex enokunyibilika kakuhle kwirabha, isebenze ii-accelerators kunye ne-sulfur, kwaye iphucula ukusebenza kakuhle kwe-vulcanization.
2. Ukwandisa uxinano oludibanisa ii-vulcanizates:
I-ZnO kunye ne-SA zenza ityuwa ye-zinc enyibilikayo. Ityuwa ye-zinc ixutywe nge-cross-linked bond, ekhusela i-weak bond, ibangela ukuba i-vulcanization yenze i-cross-linked bond emfutshane, yongeza ii-cross-linked bonds ezintsha, kwaye yonyusa uxinano lwe-cross-linking.
3. Ukuphucula ukumelana nokwaluphala kwerabha evulcanized:
Ngexesha lokusetyenziswa kwerabha evulcanized, i-polysulfide bond iyaphuka kwaye i-hydrogen sulfide evelisiweyo iya kukhawulezisa ukuguga kwerabha, kodwa i-ZnO isabela kunye ne-hydrogen sulfide ukuvelisa i-zinc sulfide, edla i-hydrogen sulfide kwaye inciphise ukubola kwe-catalytic ye-hydrogen sulfide kwinethiwekhi edibeneyo; ukongeza, i-ZnO inokuthunga iibhondi zesalfure eziphukileyo kwaye izinzise iibhondi ezidibeneyo.
4. Iindlela ezahlukeneyo zokubonakalisa:
Kwiinkqubo ezahlukeneyo zokulungelelanisa i-vulcanization, indlela yokusebenza kwee-accelerators ezahlukeneyo ze-vulcanization yahlukile kakhulu. Isiphumo se-ZnO kunye ne-SA reaction yokwenza i-zinc stearate intermediate sahlukile nakwesokusebenzisa i-zinc stearate yodwa.
Ixesha lokuthumela: Oktobha-12-2021
