Nplaim retardant technology ntawm roj hmab

Tsuas yog qee cov khoom siv roj hmab hluavtaws, feem ntau cov khoom siv roj hmab hluavtaws, zoo li cov roj hmab ntuj, yog cov khoom siv hluav taws xob lossis cov khoom siv hluav taws xob. Tam sim no, cov hau kev tseem ceeb uas siv los txhim kho cov nplaim hluav taws kub hnyiab yog ntxiv cov nplaim hluav taws kub hnyiab los yog cov nplaim hluav taws kub hnyiab, thiab sib tov thiab hloov nrog cov nplaim hluav taws kub. Muaj ntau ntau hom nplaim retardant technologies rau roj hmab:
1. Hydrocarbon roj hmab
Hydrocarbon roj hmab muaj xws li NR, SBR, BR, thiab lwm yam. Hydrocarbon roj hmab feem ntau muaj cov cua sov tsis zoo thiab nplaim taws, thiab feem ntau ntawm cov khoom decomposition thaum combustion yog combustible gases. Ntxiv cov nplaim hluav taws kub hnyiab yog ib txoj hauv kev tseem ceeb los txhim kho cov nplaim hluav taws kub hnyiab ntawm cov roj hmab hydrocarbon, thiab cov txiaj ntsig zoo ntawm cov nplaim hluav taws kub hnyiab tau siv los txhim kho cov nplaim hluav taws kub. Txawm li cas los xij, kev saib xyuas yuav tsum tau them rau qhov tsis zoo ntawm cov nplaim hluav taws xob ntawm cov khoom siv roj hmab.
Ntxiv cov nplaim retardant inorganic fillers xws li calcium carbonate, av nplaum, talcum hmoov, dawb carbon dub, Aluminium hydroxide, thiab lwm yam kom txo tau qhov feem ntawm combustible organic tshuaj. Calcium carbonate thiab nitrogen alumina muaj cov nyhuv endothermic thaum decomposed. Txoj kev no yuav txo qis qee yam ntawm lub cev thiab lub zog ntawm cov khoom siv roj hmab, thiab cov nyiaj filling yuav tsum tsis txhob loj dhau.
Tsis tas li ntawd, ua kom lub crosslinking ceev ntawm cov roj hmab tuaj yeem ua rau nws cov pa oxygen index. Yog li ntawd, nws tuaj yeem txhim kho cov nplaim retardancy ntawm roj hmab. Qhov no tej zaum yuav yog vim qhov nce ntawm thermal decomposition kub ntawm cov khoom siv roj hmab. Txoj kev no tau siv rau hauv Ethylene propylene roj hmab
2. Halogenated roj hmab
Halogenated roj hmab muaj cov ntsiab lus halogen, nrog cov pa ntsuas feem ntau ntawm 28 thiab 45, thiab cov pa ntsuas pa ntawm FPM txawm ntau tshaj 65. Qhov siab dua cov ntsiab lus halogen hauv halogenated roj hmab, qhov siab dua nws cov pa ntsuas. Hom roj hmab no nws tus kheej muaj hluav taws kub retardancy thiab nws tus kheej extinguishing thaum ignition. Yog li ntawd, nws cov nplaim hluav taws kev kho mob yog yooj yim dua li hydrocarbon roj hmab. Txhawm rau txhim kho cov nplaim hluav taws xob ntxiv ntawm cov roj hmab halogenated, txoj kev ntxiv cov nplaim hluav taws xob feem ntau yog siv.
3. Heterochain roj hmab
Cov neeg sawv cev feem ntau ntawm cov roj hmab hauv pawg no yog cov roj hmab dimethyl silicone, nrog rau cov pa ntsuas ntawm ib ncig ntawm 25. Cov nplaim hluav taws xob tiag tiag siv los ua kom nws cov thermal decomposition kub, nce cov seem thaum lub sij hawm thermal decomposition, thiab qeeb cov nqi ntau lawm. combustible gases.