Lub hauv paus tseem ceeb ntawm kev daj ntawm cov hnab looj tes nitrile
Tsis ntev los no, cov neeg lag luam hauv kev lag luam plua plav hu ua los sab laj nrog peb cov Xinchen hluav taws xob nitrile hnab looj tes: cov hnab looj tes nitrile yuav tig mus daj thaum siv thiab cia. Dab tsi yog qhov ua rau yellowing ntawm nitrile hnab looj tes? Puas yog cov hnab looj tes daj ntawm nitrile txuas ntxiv siv tau txhua zaus?
Lub hauv paus tseem ceeb ntawm kev daj ntawm cov hnab looj tes nitrile
Peb paub tias acrylonitrile (AN) yog ib qho tseem ceeb ntawm cov tshuaj polymerized monomers rau kev tsim cov khoom siv polymer xws li cov hnab looj tes roj hmab nitrile. Qhov ua tau zoo ntawm acrylonitrile ncaj qha cuam tshuam rau kev ua tiav ntawm cov khoom lag luam tiav, thiab acrylonitrile muaj cov ntsiab lus oxazole ntau tshaj plaws. Qhov tseem ceeb yog tias nws tsis tsuas yog cuam tshuam cov xim thiab cia qhov ruaj khov ntawm acrylonitrile, tab sis kuj cuam tshuam cov xim ntawm cov khoom siv polymer tom qab synthesis. Cov ntaub ntawv ntsuam xyuas ntsig sim pom tias cov ntsiab lus oxazole hauv acrylonitrile ntau tshaj 75mg / kg yuav ua rau qee qhov tshuaj lom neeg ntawm acrylonitrile. Hauv lwm lo lus, yog tias cov ntsiab lus acrylonitrile oxazole hauv hnab looj tes ntau tshaj tus qauv, hnab looj tes yuav daj. Ua ntej, muaj teeb meem nrog cov xim ntawm cov khoom tiav. Thib ob, xim yuav hloov pauv tom qab ib ntus cia. Thiab kev ua haujlwm tsis zoo thiab kev cia khoom ua rau lub hnub nyoog ntxov.
Qhov ntawd yog hais, qhov muaj peev xwm siab ntawm kev muag daj ntawm hnab looj tes nitrile yog vim kev laus los yog muaj teeb meem zoo. Hauv qhov no, hnab looj tes nitrile muaj qhov tsis zoo thiab yooj yim tawg. Yog tias siv rau hauv kev kho mob, zaub mov, tshuaj, thiab hluav taws xob kev lag luam, nws tsis raug pom zoo kom txuas ntxiv siv. Nws yuav cuam tshuam rau qhov zoo ntawm kev siv thiab ua teeb meem tsis tsim nyog. Yog tias nws nyob hauv tsev, yog tias nws tsis muaj teeb meem kev ua haujlwm hauv tsev lossis tsis xav tau kov cov khoom ntse, lub hnab looj tes tseem tuaj yeem siv yog tias lawv tsis raug puas ntsoog. Tab sis ceev faj, yog tias cov hnab looj tes nitrile tau tawg, nws yooj yim los txhuam koj cov ntiv tes.