Nyob rau hauv xyoo tsis ntev los no, nrog rau kev nce siab ua kom muaj kev ruaj khov thoob ntiaj teb, yuav ua li cas thiaj li muaj cov khib nyiab thiab rov ua haujlwm dua tshiab tau dhau los ua kev tshawb fawb los ntawm cov kws tshawb fawb. Tsoos cov qauv roj hmab ntau zaus feem ntau ntsib teeb meem xws li tsis muaj peev xwm thiab tus nqi siab, thiab thev naus laus zis raws li cov teeb meem tshiab rau cov teeb meem no.
Tshiab tshiab polymer decomposition txheej txheem
Cov kws tshawb nrhiav tau tsim lub teeb pom kev tshiab lub teeb pom kev tshiab muaj peev xwm hloov kho cov polymers rau ib thawj cov monomers. Cov tub ntxhais ntawm hom no yog siv lub teeb rau kev ua rau cov tshuaj lom neeg ua rau cov qauv tshuaj, yog li kom ua tiav kev tswj hwm cov qauv polymer. Tag nrho cov txheej txheem tsis tas yuav ntxiv ntawm cov reagents ntxiv lossis catalysts, thiab tsuas yog yuav tsum tau nqa tawm raws cov xwm txheej tshwj xeeb.
Txheej Txheem Txaus thiab Cov Ntsiab Cai Tseem Ceeb
Cov txheej txheem tshwj xeeb ntawm cov txheej txheem suav nrog ua ntej tso cov polymer hauv kev daws teeb meem ntawm Dichhlorobenzene, ua raws li los ntawm cov tshuaj tiv thaiv los ntawm violet lub teeb. Cov ntaub ntawv sim qhia tau tias cov tshuaj tiv thaiv efficiety yog kev txhim kho thaum cov tshuaj kub tau khaws cia siab tshaj 90 degree. Nyob rau hauv txheej txheem txheej txheem 1, dichlorobenzene yuav tsim chlorine dawb radicals thaum sib cuag nrog cov polymer. Cov radicals dawb yuav cia li rho tawm hydrogen 7 los ntawm cov qauv polymer, ua rau muaj cov khoom siv dawb radicals, yog li sib sau ua ib qho tshuaj tiv thaiv.
Kev ua txuj ci thiab thov cov kev cia siab
Txawm hais tias qhov kev tawm tsam ceev ntawm cov txheej txheem no yog qeeb, nws muaj cov ntsiab lus ceev tseem ceeb xws li tus nqi siab ceev, cov haujlwm yooj yim thiab tus nqi qis. Cov kws tshawb nrhiav tau taw qhia tias cov thev naus laus zis yuav tsum yog ib qho kev sib tsoo tseem ceeb ntawm cov khoom siv roj ntsha, los ntawm txoj kev rov ua dua tshiab, los ntawm txoj kev ua kom zoo dua qub, los ntawm txoj kev ua kom zoo dua, muab txoj kev ua kom txo cov nra ntawm cov yas pov tseg ntawm ib puag ncig.
Qhov kev tsim qauv no, raws li lub teeb pom kev zoo, tsis tsuas yog muab cov kev daws teeb meem zoo rau cov khoom siv polymer thiab cov monomer rov ua dua tshiab, tab sis kuj tseem muaj peev xwm ua tau zoo rau kev txhim kho kom ruaj khov. Los ntawm kev ua kom zoo ntxiv thiab txhawb cov thev naus laus zis no, peb yuav tsum ua tiav cov kev lag luam dav dav ntawm cov plastics ua ntej nws tau pom