1. Kev ntsuas qhov nruab nrab qhov hnyav nce
Cov khoom tiav tuaj yeem raug kuaj, tsau rau hauv ib lossis ob peb lub xov xwm xaiv, hnyav tom qab qee qhov kub thiab lub sijhawm, thiab cov khoom siv tuaj yeem txiav txim siab raws li qhov hnyav hloov pauv thiab qhov nyuaj ntawm qhov hloov pauv.
Piv txwv li, immersed nyob rau hauv 100 degree roj rau 24 teev, NBR, fluorine roj hmab, ECO, CR muaj ib tug me me kev hloov nyob rau hauv zoo thiab hardness, thaum NR, EPDM, SBR ntau tshaj ob npaug rau qhov hnyav thiab hloov hardness heev, thiab lub ntim expansion yog pom tseeb.
2. Kub huab cua aging test
Nqa cov qauv ntawm cov khoom tiav, muab tso rau hauv lub thawv kev laus rau ib hnub, thiab saib xyuas qhov tshwm sim tom qab kev laus.Kev laus zuj zus tuaj yeem maj mam nce ntxiv.Piv txwv li, CR, NR, thiab SBR yuav nkig ntawm 150 degrees, thaum NBR EPDM tseem elastic.Thaum qhov kub nce mus txog 180 degrees, qhov zoo tib yam NBR yuav nkig;thiab HNBR tseem yuav nkig ntawm 230 degrees, thiab cov roj hmab fluorine thiab silicone tseem muaj elasticity zoo.
3. Txoj kev combustion
Nqa ib qho qauv me me thiab hlawv nws hauv huab cua.saib lub phenomenon.
Feem ntau hais lus, fluorine roj hmab, CR, CSM yog dawb los ntawm hluav taws, thiab txawm tias cov nplaim taws kub hnyiab, nws yog me dua li NR thiab EPDM.Tau kawg, yog tias peb saib ze ze, lub xeev ntawm combustion, xim, thiab tsw kuj muab peb cov ntaub ntawv ntau.Piv txwv li, thaum NBR / PVC ua ke nrog cov kua nplaum, thaum muaj qhov hluav taws kub, qhov hluav taws kub tawg thiab zoo li dej.Nws yuav tsum raug sau tseg tias qee zaum cov nplaim hluav taws kub hnyiab tab sis cov kua nplaum tsis muaj halogen tseem yuav tua tus kheej ntawm qhov hluav taws kub, uas yuav tsum tau ua ntxiv los ntawm lwm txoj kev.
4. Kev ntsuas lub ntiajteb txawj nqus
Siv lub ntsuas hluav taws xob lossis ntsuas qhov ntsuas, qhov tseeb ntawm 0.01 gram, ntxiv rau ib khob dej thiab plaub hau.
Feem ntau hais lus, fluorine roj hmab muaj qhov loj tshaj qhov sib nqus, siab dua 1.8, thiab feem ntau ntawm CR ECO cov khoom muaj feem ntau tshaj 1.3.Cov kua nplaum no tuaj yeem xav txog.
5. Txoj kev ntsuas kub tsawg
Siv cov qauv ntawm cov khoom tiav thiab siv cov dej khov qhuav thiab dej cawv los tsim kom muaj ib qho chaw zoo li cryogenic.Soak cov qauv hauv qhov chaw kub qis rau 2-5 feeb, hnov qhov softness thiab hardness ntawm qhov kub xaiv.Piv txwv li, ntawm -40 degrees, tib qhov kub thiab txias thiab roj kuj silica gel thiab fluorine roj hmab yog muab piv, thiab silica gel yog softer.
Post lub sij hawm: Lub Xya hli ntuj-18-2022