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Kupititsa patsogolo ukadaulo wopangira zikopa zopangira zachilengedwe zozikidwa pa polyurethane yapamwamba yolimba yamadzi.
Chikopa chopangidwa ndi polyurethane ndi chinthu chatsopano chokhala ndi zolinga zambiri chomwe chachitika mwachangu m'zaka zaposachedwa.Amapangidwa pamaziko a zokutira polyurethane slurry ndi lotseguka selo dongosolo pa otsika m'munsi mwa nsalu ndi sanali nsalu nsalu.Komabe, ambiri mwa pol...Werengani zambiri -
Carboxylic hydrophilic chain amawonjezera DMBA ndi DMPA.
Mawu Oyamba Popanga madzi a polyurethane, carboxylic acid monga anionic hydrophilic chain extender ndi mtundu wa asidi wa carboxylic wokhala ndi diol, womwe umagwiritsidwa ntchito kwambiri pamapangidwe ake apadera a maselo ndikuchita bwino kwambiri kwazinthu.Carboxylic acid mtundu unyolo ...Werengani zambiri
