Ib chav kawm ntawm cov sib txuas tsim los ntawm cov tshuaj tiv thaiv ntawm isocyanate Cheebtsam nrog cov amino xyaw. Isocyanate Cheebtsam tuaj yeem yog cov monomers, polymers, derivatives ntawm isocyanates, prepolymers, thiab semi-prepolymers.
Ureas yog carbonic acid polyamides, thiab polycarbonate yog qhov sib txig sib xyaw polyester. Urea pawg polarity, tuaj yeem tsim cov ntawv cog lus hydrogen ntau, yog li lub ntsiab lus tawg ntawm urea tshaj qhov sib xyaw polyamide ntau dua, tawv kuj tseem loj, haum rau cov ntawv fiber. Urea tuaj yeem tsim hluav taws xob los ntawm polymerization ntawm diamine nrog diisocyanate lossis urea.
Polynonylurea yog tus sawv cev polymer ntawm polyurea. Los ntawm hws nrog urea, kev npaj ntawm azelaic amine, nws qhov thiab polyamide (nylon 6) yog qhov zoo sib xws, tuaj yeem yaj spinning, yaj yaj ntawm 230 ℃ ~ 235 ℃, ntom ntab yog me me (1.066 g / cm 3), zoo kub tiv taus, kev zas xim thiab corrosion tsis kam, fiber tensile lub zog yog 0.0441 ~ 0.0539 n / denier, elongation yog 23%, haum rau tsim khoom nets thiab knitwear.
Polyurea muaj ntau yam siv USES. Nws cov ntawv thov kev faib tawm yog: cov nyiaj tiv thaiv cov pob zeb muaj li 60%, cov tsheb thauj khoom tiv thaiv cov tsheb tau nyiaj li 15%, steel cov txheej txheem tiv thaiv xeb rau 10%, lub ru tsev tiv thaiv dej rau 10%, lwm cov nyiaj rau 5% Cov.
Polyurea thev naus laus zis, raws li cov cuab yeej siv tiv thaiv kev lag luam, yog siv dav hauv plaub thaj chaw dej, tiv thaiv kev ua kom tsis muaj zog, tiv thaiv kev tawm tsam thiab kho kom zoo nkauj. Piv txwv, daim ntawv thov ntawm polyurea hauv kev tiv thaiv kev lag luam tiv thaiv kev lag luam, kev siv tshuaj tiv thaiv kev tiv thaiv kuj yog qhov kev thov ntxov tshaj plaws ntawm polyurea thev naus laus zis thiab kev siv tshuab ua liaj ua teb ntau tshaj plaws. Lwm yam kev siv suav nrog kev teeb tsa steel tiv thaiv kev tiv thaiv (tshwj xeeb yog pawg steel tiv thaiv kev tiv thaiv rau wharves), cov ntaub ntawv tiv thaiv kev ywj pheej (buoy ntawm hiav txwv, chord tiv thaiv)
Kev tiv thaiv kev cog hluav taws xob muaj kev tiv thaiv kev tiv thaiv, tiv thaiv lub teb chaws (lub taub dej lub taub, lub kaus mom phom sij), pas dej da dej.
