Muaj ntau txoj kev txheeb xyuas roj hmab

1. Kev tiv thaiv rau qhov hnyav nruab nrab nce qhov kev xeem

Cov khoom tiav lawm tuaj yeem kuaj tau, muab tso rau hauv ib lossis ntau yam khoom xaiv, hnyav tom qab qee qhov kub thiab sijhawm, thiab hom khoom siv tuaj yeem txiav txim siab raws li qhov hloov pauv hnyav thiab qhov hloov pauv nyuaj.

Piv txwv li, muab tso rau hauv roj 100 degree rau 24 teev, NBR, roj hmab fluorine, ECO, CR muaj qhov hloov pauv me me hauv qhov zoo thiab qhov nyuaj, thaum NR, EPDM, SBR ntau dua ob npaug hauv qhov hnyav thiab kev hloov pauv hauv qhov nyuaj heev, thiab qhov ntim nthuav dav yog qhov pom tseeb.

2. Kev sim laus cua kub

Siv cov qauv los ntawm cov khoom tiav lawm, muab tso rau hauv lub thawv laus rau ib hnub, thiab saib qhov tshwm sim tom qab laus. Maj mam laus tuaj yeem nce maj mam. Piv txwv li, CR, NR, thiab SBR yuav tawg ntawm 150 degrees, thaum NBR EPDM tseem elastic. Thaum qhov kub nce mus txog 180 degrees, NBR ib txwm yuav tawg; thiab HNBR kuj tseem yuav tawg ntawm 230 degrees, thiab cov roj hmab fluorine thiab silicone tseem muaj elasticity zoo.

3. Txoj kev hlawv

Coj ib qho qauv me me thiab hlawv rau saum huab cua. saib seb qhov xwm txheej ntawd zoo li cas.

Feem ntau hais lus, cov roj hmab fluorine, CR, CSM tsis muaj hluav taws, thiab txawm tias nplaim taws kub hnyiab los xij, nws me dua li cov NR thiab EPDM dav dav. Tau kawg, yog tias peb saib ze ze, lub xeev ntawm kev kub hnyiab, xim, thiab tsw kuj muab ntau cov ntaub ntawv rau peb. Piv txwv li, thaum NBR / PVC raug sib xyaw nrog kua nplaum, thaum muaj qhov chaw hluav taws, hluav taws yuav txaws thiab zoo li dej. Nws yuav tsum tau sau tseg tias qee zaum cov kua nplaum uas tsis muaj hluav taws tab sis tsis muaj halogen kuj yuav tua nws tus kheej ntawm hluav taws, uas yuav tsum tau xav ntxiv los ntawm lwm txoj hauv kev.

4. Ntsuas qhov hnyav tshwj xeeb

Siv lub nplai hluav taws xob lossis lub ntsuas analytical, raug rau 0.01 gram, ntxiv rau ib khob dej thiab ib txoj plaub hau.

Feem ntau hais lus, cov roj hmab fluorine muaj qhov hnyav tshwj xeeb tshaj plaws, siab dua 1.8, thiab feem ntau ntawm cov khoom CR ECO muaj feem ntau siab dua 1.3. Cov kua nplaum no tuaj yeem suav nrog.

5. Txoj kev kub qis

Siv cov qauv los ntawm cov khoom tiav lawm thiab siv dej khov qhuav thiab cawv los tsim kom muaj ib puag ncig cryogenic tsim nyog. Muab cov qauv tso rau hauv qhov chaw kub qis rau 2-5 feeb, hnov ​​​​​​qhov mos thiab tawv ntawm qhov kub xaiv. Piv txwv li, ntawm -40 degrees, tib qhov kub siab thiab roj tsis kam silica gel thiab fluorine roj hmab raug piv, thiab silica gel mos dua.