Cov Hnab looj tes Lijiejing Halogen-Free Nitrile ua tiav kev tswj hwm cov ntsiab lus halogen nruj heev los ntawm peb lub kaw lus kaw-loop ntawm "kev tswj hwm kev xaiv cov khoom siv, kev tswj hwm kev ua haujlwm ntau lawm, thiab kev sim khoom tiav." Cov kev ntsuas tshwj xeeb suav nrog: Kev Xaiv Khoom Siv: Tshem tawm kev qhia txog halogen ntawm theem khoom siv los ntawm kev xaiv cov roj hmab nitrile qis-halogen / halogen-free, xyuas kom meej tias cov ntsiab lus halogen ≤150ppm. Kev Tswj Xyuas Kev Xaiv Ntxiv: Txhua yam khoom ntxiv, suav nrog cov neeg sawv cev vulcanizing thiab accelerators, raug xaiv los ntawm cov hom halogen-dawb, cov phooj ywg ib puag ncig, xws li cov kab ke vulcanization tsis muaj halogen. Thaum cov khoom ntxiv rau ib puag ncig no nqa cov nqi siab dua, lawv tiv thaiv kev qhia txog halogen ntawm qhov chaw. Kev Tswj Xyuas Kev Tsim Khoom: Kev ua kom zoo dua cov txheej txheem polymerization thoob plaws hauv kev tsim khoom kom txo cov halogen residues. Kev tswj hwm qhov kub, siab, thiab lub sijhawm ua haujlwm thaum lub sijhawm emulsion polymerization. Siv cov txheej txheem polymerization theem kom txo cov khoom siv hydrocarbon halogenated - txawm tias nce kev siv zog, qhov no txo cov ntsiab lus halogen. Kev Ntxuav thiab Kev Ua Kom Huv Si Zoo: Cov roj hmab tom qab polymerization dhau los ntawm cov txheej txheem ua ke ntawm 3-5 ntau theem dej ntxuav + kev sib cais centrifugal. Cov dej deionized tshem tawm cov halogen monomers thiab cov khoom ntxiv uas seem, ntau tshaj qhov ntsuas 1-2 rau cov hnab looj tes ib txwm muaj. Kev siv tshuab ziab khaub ncaws kub qis (≤90 ° C) lossis ziab hauv lub tshuab nqus tsev yog siv los tiv thaiv kev puas tsuaj ntawm cov khoom siv thiab kev tsim cov tshuaj halogen los ntawm qhov kub siab, ua kom ntseeg tau tias cov nqi halogen ruaj khov. Kev tswj cov txheej txheem ntxuav chlorine kom raug: Cov ntsiab lus chlorine hauv cov tshuaj ntxuav yog txwv rau 350-600 ppm, nrog rau lub sijhawm ntxuav tswj tau ntawm 0.3-1 feeb, sib npaug ntawm kev ua haujlwm ntxuav nrog kev pheej hmoo halogen seem. Kev Ntsuas Qhov Tseeb: Kev Tshaj Tawm Ua Raws Cai Ua Ib Pawg Los Ntawm Ib Pawg Tsim kom muaj lub kaw lus kuaj mob siab uas muaj cov ion chromatographs, X-ray fluorescence spectrometers, thiab lwm yam cuab yeej. Ua qhov kev tshuaj xyuas ntau ntawm cov ntsiab lus chlorine (Cl) thiab bromine (Br) hauv txhua pawg, ua tiav cov kev txwv ntawm kev kuaj pom ntawm qib ppm lossis txawm tias qib ppb-qib kev txheeb xyuas qhov tsis pom. Kev ua raws li cov qauv thoob ntiaj teb nruj me ntsis ua kom ntseeg tau tias ua raws li IEC thiab RoHS cov lus qhia: cov tshuaj chlorine (Cl) thiab bromine (Br) cov ntsiab lus qis dua 900 ppm txhua, tag nrho cov ntsiab lus halogen qis dua 1500 ppm, nrog rau cov khoom xaiv ua tiav tag nrho cov theem halogen qis li 50 ppm lossis tsawg dua.
Lub sijhawm tshaj tawm: Kaum Ib Hlis-20-2025