Thaum xaiv cov tsuj roj los ntawm ob qho ntawm cov txheej txheem kev ua tau zoo thiab cov khoom lag luam, kev siv ib tus tsuj roj ib zaug tsis ua tiav cov txiaj ntsig kom ua tiav. Piv txwv li, txawm hais tias tus tsuj roj DPG muaj peev xwm muab cov roj hmab vulcanized siab ua tau lub zog thiab elongation kev nyuaj siab, cov leej faj ceev qeeb, lub tiaj tsis zoo, thiab cov roj hmab vulcanized muaj qhov kub tsis zoo kev laus tiv taus; txawm hais tias tus tsuj roj ceev TMTD muaj cov roj ceev ceev thiab qhov siab ntawm vulcanization, Ua kev nyab xeeb tsis zoo, yooj yim rau scorch thiab oversulfur; vulcanizates ntawm thiazole thiab sulfenamide muaj ntau dua lub zog tensile, zoo hnav tsis kam, kub tsis kam, laus tiv taus, thiab zoo vulcanization flatness. Txhawm rau txhawm rau ntxiv qhov ceev nrooj ntawm vulcanization thiab ua tiav kev siv ntau dua, muaj 2-3 hom kev nrawm feem ntau siv nyob rau hauv kev tsim qauv vulcanization hauv cov roj hmab mis kom ua tiav cov txiaj ntsig ntawm kev sib txuam los yog ua kom sib txig sib luag, yog li yoog rau kev siv tshuab ua haujlwm thiab txhim kho cov khoom kom zoo. xav tau.
Thaum accelerator raug siv los ua ke, ib tus tsuj roj feem ntau yog siv los ua tus tsuj roj loj (hu ua tus thawj accelerator los thawj tus tsuj roj), thiab lwm tus tsuj roj tsheb yog siv cov twj siv sib txuas (hu ua txhawb nqa theem ob los yog tus tsuj roj ceev thib ob). Tus nqi ntawm tus tsuj roj loj yog tus loj, thiab tus nqi ntawm tus tsuj roj theem nrab tseem me me (feem ntau li ntawm 10% -40% ntawm lub ntsiab hluav taws xob).
1. Lub nrawm ua muab faib ua peb pawg raws li muaj acidity thiab alkalinity. Ib qho yog acid accelerator (qhia los ntawm tsab ntawv A): suav nrog thiazole, thiuram, dithiocarbamate, xanthate; lwm qhov yog alkaline accelerator (qhia los ntawm tsab ntawv B): suav nrog Guanidine Chav thiab aldehyde amines; qhov thib peb yog qhov nruab nrab tsis nrawm (sawv cev los ntawm tsab ntawv N): suav nrog sulfenamides thiab thioureas. Cov nrawm tau muab faib ua AB, AA, BB, NA, NB, NN, thiab lwm yam raws li kev sib xyaw ntawm cov kua qaub thiab alkali, tab sis siv feem ntau yog kev sib xyaw ntawm cov kua qaub thiab alkali (AB), kua qaub acid (AA), thiab cov kua qaub nruab nrab (NA).
2. Lub nrawm ua haujlwm tau muab faib ua tsib pawg raws li qhov ceev nrooj vulcanization. Thoob ntiaj teb, nws yog kev coj los piv qhov vulcanization nrawm nrawm raws li cov nyhuv ntawm nrawm M ntawm cov roj hmab ntuj. Qeb-qeeb-ceev: aldehyde amines, thioureas; theem nrab-ceev qib: guanidines; Qibi-super-ceev qib: thiazole, inosinamides; super-ceev qib: thiuram; super-ceev qib: dithiocarbamate, daj Orthoate.
Feem ntau xaiv cov kua roj accelerator acid (A) lossis hom nruab nrab ntsuas nrawm (N) hom raws li lub ntsiab nrawm, uas yog thiazole thiab sulfenamide accelerator. Raws li lub ntsiab nrawm, thiurams feem ntau siv hauv kev ua haujlwm zoo thiab muaj txiaj ntsig ntsig txog kev ua kom vulcanization. Raws li lub ntsiab nrawm, dithiocarbamate accelerator feem ntau siv hauv cov khoom lag luam latex thiab roj hmab butyl. Raws li theem nrab accelerator, alkaline accelerator xws li DPG thiab H feem ntau siv. Nws lub luag haujlwm yog kom txhawb nqa thiab txhawb nqa ib leeg. Thaum sulfenamides siv los ua thawj cov kev siv hluav taws xob, kev siv hluav taws xob ceev feem ntau tsis siv. Vim tias tus tsuj roj no tuaj yeem decompose accelerator M thiab amine cov khoom sib txuas ntawm qhov ntsuas kub ntawm vulcanization, M yog cov tshuaj tiv thaiv acid, thiab amine tebchaw yog alkaline accelerator. Nws suav nrog kev sib xyaw ua ke acid-puag pib (AB), tab sis txhawm rau kom nrawm nrawm ntawm qhov ntsuas nrawm, qhov ntsuas me me ntawm DPG lossis thiuram accelerator tuaj yeem siv. Tus nqi ntawm cov tsuj roj DPG feem ntau yog 10% ntawm lub ntsiab tsuj roj. Thaum tus nqi ntau dhau, qhov ntsuas vulcanization yuav zoo li txo qis.