Thiazole accelerator yog hom ntawm semi-overspeed accelerator. Piv nrog dithiocarbamate thiab thiuram accelerator, lawv feem ntau muaj qis dua kev ua si thiab zoo dua scorch tsis kam, tab sis qhov kev txwv ntawm vulcanization qeeb qeeb. Tus nqi ntawm cov ntsuas nrawm thiab leej faj nyob rau hauv cov khoom yuav tsum tau nce kom tsim nyog, thiab qhov ntsuas kub ntawm qhov kev xav vulcanization yuav tsum nce kom tsim nyog. Thaum thiazole accelerator siv nyob ib leeg, qhov kev kawm ntawm lub zog ntawm vulcanizates yog tus tsawg. Dhau ntawm cov xwm txheej tshwj xeeb (xws li kev tsim cov khoom lag luam nrog cov kev nyuab siab elongation tsis tshua muaj siab), lawv feem ntau ua ke nrog alkaline accelerator, dithiocarbamates lossis thiurams. Cov nrawm nrawm ua ke. Qhov zoo dua ntawm cov kev sib koom ua ke no yog lawv tuaj yeem txhim kho qhov kev ua tiav ntawm vulcaniz Kev ua haujlwm kev nyab xeeb ntawm cov khoom tau poob qis, thiab lub tiaj ntawm vulcanization kuj tau nqaim raws li.
Ua kom nce ntawm thiazole accelerator thiab txo qis dua leej faj tuaj yeem txhim kho qhov muaj peev xwm tiv thaiv tshav kub ntawm vulcanizate. Txawm hais tias qhov kub tsis kam ntawm qhov no vulcanizate tsis zoo li qhov tau hais los ntawm thiuram sulfur-free vulcanizate, nws tseem yog qhov tseem ceeb rau qhov siv tiag Cov.
Kev siv ntau tshaj plaws thiazole accelerator M, DM, thiab MZ, ntawm cov uas nrawm DM yog tus tsuj roj nrog qee yam kev ua haujlwm.
Mechanism ntawm kev ua
Feem ntau ntseeg tau hais tias cov kev ua ntawm kev thiazole accelerator xws li M yog pom nyob hauv daim duab hauv qab no (noj tus tsuj hluav taws xob M ua piv txwv): nyob ntawm thaj tsam zinc oxide, zinc ntsev ntawm M yog thawj tsim, ces polysulfide II yog tsim nrog cov leej faj, thiab tom qab ntawd vulcanization cov tshuaj tiv thaiv yog tsim nrog roj hmab Cov khoom siv hluav taws xob ua ntej III thiab nrawm M, III txuas ntxiv ua rau cov tshuaj tiv thaiv vulcanization, sib sau sib txuas thiab sib txuas lus vulcanization tshiab ua ntej Ⅷ, kom tus ntoo khaub lig-txuas ntxiv mus ntxiv.