Lub lim tiam no, tus nqi ntawm cov ntshiab benzene tau nce los ntawm 25 $ / t, tus nqi ntawm aniline plunged los ntawm 400 $ / t, tus nqi ntawm cyclohexylamine plunged los ntawm 450 $ / t, tus nqi ntawm MIBK poob los ntawm 160 $ / t, tus nqi ntawm acetone tseem nyob ruaj khov, thiab tus nqi ntawm lwm cov khoom siv raw khoom yog qhov ruaj khov.
Raw khoom aniline nqi poob sharply, tsis zoo accelerator intermediates - MBT nqi, tsav tag nrho cov nqi lag luam ntawm accelerators nqaim poob. Txhawb nqa cov khoom tam sim no yog qhov tsim nyog, tab sis qhov kev hloov pauv tiag tiag yog lub teeb, qhov qis qis ntawm qhov xav tau kev yuav khoom, tshwj xeeb tshaj yog cov nqi raw khoom tseem tsis tau qis dua, kev lag luam kev xav tau muaj zog dua. Cia siab tias yuav txhawb nqa tus nqi ntawm cov khoom siv raw khoom nyob rau yav tom ntej los ntawm kev cuam tshuam ntawm kev pom tseeb dua, tus nqi kom tswj tau qhov kev poob qis.
Los ntawm kev poob qis ntawm cov khoom siv raw MIBK thiab aniline poob qis, cov tshuaj tua kab mob antioxidant 6PPD thiab IPPD poob qis; antioxidant TMQ vim yav dhau los ze rau tus nqi, tus nqi lub lim tiam no tsis muaj zog me ntsis, tab sis tus nqi poob qis yog txwv. Tam sim no, kev sib tw ua lag luam yog khaus ntau dua, cov channel rau tus nqi siab thaum ntxov ntawm cov khoom muag rau nkoj feem ntau. Ua ke nrog cov khoom siv antioxidant yog tseem xav tias yuav poob, nws xav tias lub sij hawm luv luv antioxidant downward trend yog nyuaj rau thim rov qab.
Cov khoom ntawm insoluble sulfur tseem txaus thiab tus nqi nyob ruaj khov; zinc oxide thiab stearic acid cov nqi tau poob me ntsis, thaum silane coupling tus neeg saib xyuas thiab tus nqi tiv thaiv coke tseem nyob ruaj khov.