Qhov sib txawv tseem ceeb ntawm NBR thiab EPDM yog NBR yog cov khoom tsis muaj ntxhiab tsw ntxhiab, qhov EPDM yog ib qho muaj ntxhiab polymer.
NBR thiab EPDM yog ob hom khoom siv roj hmab. Roj Hmab yog cov khoom siv uas tuaj yeem ncab thaum ntxiv cov quab yuam sab nraud thiab tog rau hauv cov duab qub tom qab tshem tawm cov ntawv thov. Cov roj hmab ntuj, tau los ntawm cov latex ntawm tsob ntoo roj hmab, yog txoj hauv kev zoo tshaj plaws ntawm cov khoom siv roj hmab; Txawm li cas los xij, muaj txoj hauv kev zoo ib yam.
NBR yog dab tsi?
Lub sij hawm NBR sawv rau Nitrile Butadiene Rubber. Nws tseem hu ua nitrile roj hmab, Buna-N thiab acrylonitrile butadiene roj hmab. Nws yog ib hom hluavtaws roj hmab uas yog tsim los ntawm acrylonitrile thiab butadiene monomers. Cov npe lag luam tshaj plaws rau cov roj hmab no yog Perbunan, Nipol, Krynac, thiab Europrene.
NBR cov khoom siv txawv txawv rau cov roj, roj, thiab tshuaj lom neeg feem ntau. Yog li ntawd, nws yog qhov tseem ceeb hauv kev lag luam tsheb thiab kev lag luam aeronautical, tsim cov roj thiab roj tuav hoses, ntsaws ruaj ruaj, grommets, thiab roj tso tsheb hlau luam. Ntxiv mus, NBR muaj txiaj ntsig zoo hauv kev lag luam nuclear, hauv kev npaj cov hnab looj tes tiv thaiv. Cov khoom no muaj kev ruaj ntseg zoo heev nyob rau hauv qhov kub ntawm qhov kub ntawm 40 ° C mus rau 108 ° C. Qhov no ua rau nws yog ib qho khoom siv zoo tshaj plaws rau kev siv aeronautical. Tsis tas li ntawd, NBR yog ib qho tseem ceeb hauv kev tsim cov khoom pwm, khau, cov nplaum, sealants, daim txhuam cev, nthuav dav foams, thiab cov ntaub pua tsev.
Daim duab 01: Nitrile hnab looj tes
Ntxiv mus, qhov tshwj xeeb resilience ntawm NBR ua rau nws tseem ceeb hauv kev tsim cov khoom siv pov tseg, ntxuav lub hom phiaj thiab kuaj cov hnab looj tes. Piv rau cov roj hmab ntuj (NR), NBR tiv taus cov roj thiab cov kua qaub ntau dua. Nws kuj muaj lub zog zoo dua thiab tsis ua rau muaj kev fab tshuaj (cov roj hmab ntuj tuaj yeem ua rau muaj kev tsis haum rau ntawm daim tawv nqaij).
EPDM yog dab tsi?
Lo lus EPDM sawv cev rau Ethylene Propylene Diene Monomer Rubber. Nws yog ib hom khoom siv hluavtaws uas tuaj nyob rau hauv pab pawg ntawm elastomers, thiab muaj cov saw hlau saturated ntawm polyethylene. EPDM yog ib qho tshuaj tsw qab. Cov monomers siv los tsim cov khoom siv polymer no yog ethylene, propylene thiab diene comonomer. Nws cov qauv ua rau crosslinking ntawm sulfur vulcanization.
Daim duab 02: Rov Ua Haujlwm ntawm EPDM
Vim muaj cov pob txha saturated, EPDM muaj qhov ua tau zoo dua rau cov cua sov, lub teeb thiab ozone thaum piv rau lwm cov khoom siv roj hmab tsis zoo xws li roj hmab ntuj, SBR thiab Neoprene. Ntxiv mus, peb tuaj yeem tsim EPDM nyob rau hauv daim ntawv kub-resistant polymer uas tuaj yeem tiv taus txog li 150 degrees Celsius. Nws tuaj yeem siv sab nraum zoov ntau xyoo yam tsis muaj degradation. Tsis tas li ntawd, cov khoom no muaj cov khoom zoo uas tsis tshua muaj kub xws li elasticity.
Qhov txawv ntawm NBR thiab EPDM yog dab tsi?
NBR thiab EPDM yog ob hom khoom siv roj hmab. NBR sawv cev rau Nitrile Butadiene Rubber thaum EPDM sawv cev rau Ethylene Propylene Diene Monomer Rubber. Qhov sib txawv tseem ceeb ntawm NBR thiab EPDM yog tias NBR yog ib qho tsis muaj ntxhiab polymer compound, hos EPDM yog ib qho muaj ntxhiab polymer. Ntxiv mus, NBR yog tsim los siv acrylonitrile thiab butadiene monomers, thaum EPDM yog tsim los ntawm ethylene, propylene thiab diene comonomer.
Cov infographic hauv qab no qhia ntau qhov sib txawv ntawm NBR thiab EPDM hauv daim ntawv teev npe.
Summary – NBR vs EPDM
Lub sij hawm NBR stands rau Nitrile Butadiene Rubber thaum lub sij hawm EPDM sawv cev rau Ethylene Propylene Diene Monomer Rubber. Qhov sib txawv tseem ceeb ntawm NBR thiab EPDM yog NBR yog ib qho tsis muaj ntxhiab polymer compound, thaum EPDM yog ib qho muaj ntxhiab polymer.
