Txoj kev tsim cov chloroprene roj hmab

1) Formulation: Refined chloroprene yog qhuav thiab txias, ces metered rau hauv cov roj theem npaj nkoj. Sulfur yog ntxiv raws li cov qauv, thiab tom qab dissolution, rosin yog ntxiv los npaj cov roj theem. Ib theem aqueous yog npaj siv dej softened, sodium hydroxide, thiab dispersant. Tib lub sijhawm, cov kev daws teeb meem pib thiab cov terminator tau npaj.

2) Polymerization: Cov roj thiab aqueous theem yog tov thiab emulsified nyob rau hauv ib lub nkoj emulsifying, ces muab tso rau hauv lub nkoj polymerization. Ib qho kev daws teeb meem pib ntxiv, thiab polymerization yog nqa tawm ntawm 35-45℃rau 2-2.5 teev.

3) Termination thiab Chain Breaking: Thaum cov txheeb ze ntom ntom ntawm cov latex nce mus txog 1.068, cov tshuaj tiv thaiv polymerization raug txiav los ntawm lub ntsiab latex terminator. Cov latex tau muab tso rau hauv cov saw hlau- tawg lub tank, qhov twg cov saw tawg tshwm sim hauv qhov nruab nrab alkaline. Qhov kawg point yog tswj los ntawm plasticity.

4) Coagulation thiab ziab: Cov saw hlau - tawg latex yog pub rau hauv lub tank coagulation, qhov uas nws reacts nrog ib coagulant muaj li ntawm sodium chloride thiab calcium chloride, ua rau cov roj hmab los nag ua me me. Tom qab ntxuav, extrusion dehydration, ziab, hmoov, txiav, thiab ntim, cov khoom tiav tau txais.