Malo ogwiritsira ntchito magalimotoflexible polyurethaneskwa mipando yamagalimoto ndi olimba polyurethanes kwa
zotenthetsera zotentha komanso zomveka.Mosakayikira, zinthu zofunika kwambiri za polyurethanes
mu magalimoto ndi otsika kulemera limodzi ndi mkulu mawotchi mphamvu.Zinthu izi zimangowonjezera
mtunda wautali, kutsika mtengo kwamafuta, komanso chitetezo kukana kugunda (18, 19).Polyurethanes amagwiritsidwanso ntchito mu zokutira zamagalimoto.Zovala ndizofunikira pamagalimoto, chifukwa zimapereka kukana kwa dzimbiri kuzitsulo zomwe zimagwiritsidwa ntchito m'zigawo za thupi.Amaperekanso gloss effect kuti magalimoto azitha kupirira nyengo, zolimba, komanso zowoneka bwino.Makampani opanga magalimoto ndi mipando amagwiritsa ntchito zotchingira moto pazovala zawo kuti atetezeke.Ntchito ina inaphunzira za kukhalapo kwa zoletsa moto ndi mmene zimakhudzira fumbi lamagalimoto (20).2,2-bis(chloromethyl)-propane-1,3-diyltetrakis(2-chloroethyl) bisphosphate, yotchedwa V6, imagwiritsidwa ntchito ngati choletsa moto mu thovu lagalimoto, lomwe lili ndi tris(2-chloroethyl) phosphate monga carcinogen yodziwika. gulu (Chithunzi 12).Kuphatikizika kwa 5-6160 ng / g ya V6 mu fumbi lagalimoto kunawonedwa, komwe kunali kokulirapo kuposa fumbi lanyumba.Ngakhale lawi lochokera ku halogen 14 Gupta ndi Kahol;Polyurethane Chemistry: Renewable Polyols ndi Isocyanates ACS Symposium Series;American Chemical Society: Washington, DC, 2021. obwezeretsa amatha kuzimitsa moto, kawopsedwe kawo chifukwa chotulutsa mpweya wa carcinogenic ndi
chachikulu drawback.Kafukufuku wokwanira waperekedwa popanga zida zatsopano zomwe zili bwino zoletsa moto popanda kuchuluka kwa kawopsedwe komwe kumawonetsedwa ndi zoletsa moto za halogen.Zambiri mwazinthu zomwe zakhala zikugwiritsidwa ntchito ngati zotchingira moto wobiriwira zimachokera kuzitsulo zachitsulo (21), nayitrogeni (22), phosphorous (23), ndi kaboni (24).Aluminium trihydroxide, melamine, melamine cyanrate, melamine phosphate, ammonium phosphate, red phosphorous, phosphate esters, phosphinates, phosphonates, carbon black, and expandable graphite ndi zitsanzo zochepa za retardants zothandiza komanso zachilengedwe.Ndizodziwikiratu kuti kupanga ndi kuphunzira za zoletsa moto - zomwe zimapereka kugwirizana koyenera ndi polyurethanes ndipo sizimatulutsa utsi wapoizoni panthawi ya kuyaka - ndizofunikira kwambiri.

Declaration:Nkhaniyi yatengedwa kuchokera ku Introduction to Polyurethane Chemistry Felipe M. de Souza, 1 Pawan K. Kahol, 2 ndi Ram K.Gupta *,1 .Pokhapokha kuyankhulana ndi kuphunzira, osachita zina zamalonda, sikuyimira maganizo ndi malingaliro a kampani, ngati mukufuna kusindikizanso, chonde funsani wolembayo woyambirira, ngati pali kuphwanya, chonde tilankhule nafe nthawi yomweyo kuti tichotse processing.