Di-tert-butyl peroxide, tseem hu ua DTBP, yog cov khoom lag luam feem ntau dialkyl peroxide nrog cov mis molecular C8H18O2. Nws yog cov kua tsis muaj xim uas tuaj yeem sib xyaw nrog cov kuab tshuaj organic xws li benzene thiab roj av ether, thiab yog insoluble hauv dej. Nws yog tsuas yog siv los ua tus pib cob qhia, photopolymerization sensitizer, roj hmab vulcanizer, diesel ignition promoter, thiab kuj nyob rau hauv organic synthesis.
Daim ntawv thov tseem ceeb ntawm di-tert-butyl peroxide (qhov thib ob ntawm tsab xov xwm no) thiab lawv cov lus qhia luv luv yog raws li hauv qab no:
1, Kub vulcanized silicone roj hmab kev lag luam
Silicone roj hmab yog ib qho ntawm cov khoom tseem ceeb hauv cov organic silicone polymers. Ntawm txhua hom roj hmab, cov roj hmab silicone muaj qhov dav tshaj plaws ntawm kev ua haujlwm kub (-100 degree ~ 350 degree) thiab ua haujlwm zoo rau qhov kub thiab txias. Silicone roj hmab feem ntau muab faib ua ob hom: thermal vulcanization hom thiab chav kub vulcanization hom, ntawm cov thermal vulcanization hom silicone roj hmab siv organic peroxide vulcanization. Thermal vulcanized silicone roj hmab yog siv rau hauv tsheb, hluav taws xob, hluav taws xob, kev kho mob, thiab lwm yam.
Cov hom tseem ceeb siv hauv kev lag luam kub vulcanized silicone roj hmab yog 2, 5-dimethyl-2, 5-bis (tert butylperoxy) hexane (bis penta, tseem hu ua 101), di tert butylperoxide (DTBP), 1, 1-bis (tert butylperoxy) -3, 3, 5-trimethylcyclohexane (TMCH), thiab peroxybis - (2, 4-dichlorobenzoyl) (DCBP) .
Ntawm lawv, 2, 5-dimethyl-2, 5-bis (tert butylperoxy) hexane (bis penta, tseem hu ua 101) thiab Di-tert-butyl peroxide (DTBP) yog ob qho tib si siv hauv molding vulcanization, suav txog kwv yees li 40% thiab 25% ntawm tag nrho cov tshuaj, raws li, nrog rau qhov sib ntxiv ntawm 0.8 mus rau 2%.
2, Ethylene propylene roj hmab kev lag luam
Ethylene propylene roj hmab (EPR) yog ib qho polymer tau los ntawm copolymerization ntawm ethylene thiab propylene ua lub ntsiab monomers. Nyob ntawm seb muaj pes tsawg tus monomers hauv cov saw hlau molecular, muaj ethylene propylene diene monomer (EPM) thiab ethylene propylene diene monomer (EPDM). Ethylene propylene roj hmab muaj ozone ua haujlwm zoo, kev laus ua haujlwm, tshuaj tiv thaiv corrosion, thiab hluav taws xob rwb thaiv tsev ua haujlwm.
Tam sim no, lub peev xwm ntau lawm ntawm ethylene propylene roj hmab hauv ntiaj teb no feem ntau yog nyob hauv North America, Western Europe, thiab Asia. Cov neeg tsim khoom tseem ceeb suav nrog ExxonMobil Chemical Company hauv Tebchaws Meskas, DuPont Dow Chemical Company hauv Tebchaws Meskas, Lion Copolymer Company hauv Tebchaws Meskas, DSM Elastomer Company hauv Netherlands, thiab Polimer Europa Company hauv Ltalis.
Cov hom tseem ceeb ntawm cov organic peroxides siv hauv kev lag luam ethylene propylene roj hmab muaj xws li 2, 5-dimethyl-2, 5-bis (tert butylperoxy) hexane (bis penta, tseem hu ua 101), Di -tert-butyl peroxide (DTBP), 1, 1-bis (tert butylperoxy) -3, 3, 5-trimethylcyclohexane (TMCH), thiab 1, 1-bis (tert) butylperoxy) cyclohexane (CH). Ntawm lawv, 1,1-bis (tert butylperoxy) cyclohexane (CH) muaj ntau npaum li cas, suav txog li 40%; Qhov thib ob yog Di-tert-butyl peroxide (DTBP), suav txog li 20%; Qhov sib ntxiv yog nyob ib ncig ntawm 2%.