Cov thev naus laus zis tiv taus hluav taws ntawm roj hmab

Tsuas yog ob peb yam khoom siv roj hmab ua los ntawm cov khoom siv xwb, feem ntau cov khoom siv roj hmab ua los ntawm cov khoom siv, xws li roj hmab ntuj, yog cov khoom siv uas yooj yim hlawv lossis yooj yim hlawv. Tam sim no, cov txheej txheem tseem ceeb uas siv los txhim kho kev tiv thaiv hluav taws yog ntxiv cov tshuaj tiv thaiv hluav taws lossis cov tshuaj tiv thaiv hluav taws, thiab sib xyaw thiab hloov kho nrog cov khoom siv tiv thaiv hluav taws. Muaj ntau hom thev naus laus zis tiv thaiv hluav taws rau roj hmab:
1. Cov roj hmab hydrocarbon
Cov roj hmab hydrocarbon muaj xws li NR, SBR, BR, thiab lwm yam. Cov roj hmab hydrocarbon feem ntau tsis muaj zog tiv taus cua sov thiab hluav taws kub, thiab feem ntau ntawm cov khoom lwj thaum lub sijhawm hlawv yog cov pa roj uas tuaj yeem hlawv tau. Ntxiv cov tshuaj tua hluav taws yog ib txoj hauv kev tseem ceeb los txhim kho qhov hluav taws kub ntawm cov roj hmab hydrocarbon, thiab cov txiaj ntsig synergistic ntawm cov tshuaj tua hluav taws yog siv los txhim kho qhov hluav taws kub. Txawm li cas los xij, yuav tsum tau them sai sai rau qhov tsis zoo ntawm cov tshuaj tua hluav taws rau cov khoom siv kho tshuab ntawm cov roj hmab.
Ntxiv cov khoom siv inorganic uas tiv taus hluav taws xws li calcium carbonate, av nplaum, hmoov talcum, carbon dub dawb, Aluminium hydroxide, thiab lwm yam kom txo qhov feem pua ​​ntawm cov khoom siv organic uas kub hnyiab tau. Calcium carbonate thiab nitrogen alumina muaj cov nyhuv endothermic thaum decomposed. Txoj kev no yuav txo qee yam khoom siv lub cev thiab lub cev ntawm cov khoom siv roj hmab, thiab qhov ntim ntawm cov khoom yuav tsum tsis txhob loj dhau.
Tsis tas li ntawd xwb, kev ua kom cov roj hmab sib txuas ua ke ntau ntxiv tuaj yeem ua rau nws cov pa oxygen nce ntxiv. Yog li ntawd, nws tuaj yeem txhim kho qhov hluav taws kub ntawm roj hmab. Qhov no yuav yog vim muaj kev nce ntxiv ntawm qhov kub ntawm cov khoom siv roj hmab. Txoj kev no tau siv rau hauv Ethylene propylene roj hmab
2. Cov roj hmab halogenated
Cov roj hmab halogenated muaj cov ntsiab lus halogen, nrog rau cov pa oxygen index feem ntau ntawm 28 thiab 45, thiab cov pa oxygen index ntawm FPM txawm tshaj 65. Cov halogenated roj hmab ntau dua, nws cov pa oxygen index siab dua. Hom roj hmab no nws tus kheej muaj kev tiv thaiv hluav taws kub thiab tua tus kheej thaum hluav taws kub. Yog li ntawd, nws txoj kev kho hluav taws kub yooj yim dua li cov roj hmab hydrocarbon. Txhawm rau txhim kho qhov kev tiv thaiv hluav taws kub ntawm cov roj hmab halogenated, txoj kev ntxiv cov tshuaj tiv thaiv hluav taws feem ntau raug siv.
3. Heterochain roj hmab
Cov roj hmab uas sawv cev tshaj plaws hauv pawg no yog dimethyl silicone roj hmab, nrog rau cov pa oxygen ntawm kwv yees li 25. Cov txheej txheem tiv thaiv hluav taws tiag tiag siv yog ua kom nws qhov kub thiab txias ntawm kev lwj, ua kom cov seem seem thaum lub sijhawm lwj, thiab qeeb qeeb ntawm cov pa roj uas tuaj yeem hlawv tau.