Cov khoom yas ntawm cov roj hmab feem ntau

1. Roj hmab ntuj
Cov roj hmab ntuj yooj yim kom tau txais plasticity. Cov viscosity tas mus li thiab cov viscosity qis tus qauv maleic roj hmab muaj viscosity pib qis thiab feem ntau tsis tas yuav tsum tau plasticated. Yog tias Mooney viscosity ntawm lwm hom nplaum txheem tshaj 60, lawv tseem yuav tsum tau molded. Thaum siv lub tshuab sib tov sab hauv rau molding, lub sijhawm yog kwv yees li 3-5 feeb thaum qhov kub nce mus txog saum 120 ℃. Thaum ntxiv cov plasticizers lossis plasticizers, nws tuaj yeem ua rau lub sijhawm plasticizing luv dua thiab txhim kho cov nyhuv plasticizing.
2. Styrene-butadiene
Feem ntau hais lus, Mooney viscosity ntawm Styrene-butadiene feem ntau yog ntawm 35-60. Yog li ntawd, Styrene-butadiene kuj tsis tas yuav plasticizing. Tab sis qhov tseeb, tom qab plasticizing, qhov dispersibility ntawm compounding tus neeg sawv cev tuaj yeem txhim kho, uas pab txhim kho cov khoom zoo. Tshwj xeeb tshaj yog rau cov khoom siv roj hmab sponge, Styrene-butadiene yooj yim ua npuas ncauj tom qab plasticizing, thiab qhov loj ntawm npuas yog sib xws.
3. Polybutadiene
Polybutadiene muaj cov khoom ntws txias thiab tsis yooj yim los txhim kho cov nyhuv yas. Tam sim no, Mooney viscosity ntawm Polybutadiene feem ntau siv tau tswj hwm hauv qhov ntau thiab tsawg thaum lub sijhawm polymerization, yog li nws tuaj yeem sib xyaw ncaj qha yam tsis muaj plasticizing.
4. Neoprene
Feem ntau neoprene tsis tas yuav tsum tau ua kom yas, tab sis vim nws muaj zog heev, nws pab tau rau kev ua haujlwm. Qhov kub ntawm qhov nyias nyias feem ntau yog 30 ℃ -40 ℃, uas yooj yim lo rau ntawm lub yob yog tias nws siab dhau.
5. Ethylene propylene roj hmab
Vim yog cov qauv ntawm cov saw tseem ceeb ntawm Ethylene propylene roj hmab, nws nyuaj rau ua rau muaj kev tawg ntawm molecular los ntawm kev ua yas. Yog li ntawd, nws yog qhov zoo kom ua kom nws muaj Mooney viscosity tsim nyog yam tsis tas yuav molding.
6. Roj hmab butyl
Cov roj hmab butyl muaj cov qauv tshuaj ruaj khov thiab mos, qhov hnyav molecular me me thiab cov kua dej ntau, yog li cov nyhuv yas tsis zoo. Cov roj hmab butyl nrog cov viscosity Mooney qis dua tuaj yeem sib xyaw ncaj qha yam tsis muaj plasticizing.
7. Cov roj hmab nitrile
Cov roj hmab nitrile muaj cov yas me me, muaj zog heev thiab muaj cua sov ntau thaum lub sijhawm ua yas. Yog li ntawd, feem ntau siv cov khoom siv hauv lub tshuab qhib kom ua tiav cov txiaj ntsig zoo. Cov roj hmab nitrile yuav tsum tsis txhob ua yas hauv lub tshuab sib tov sab hauv. Vim tias cov roj hmab nitrile mos muaj qee yam yas, nws tuaj yeem sib tov ncaj qha yam tsis tas yuav ua kom cov yas zoo.