Imboni yezimoto isebenzisapolyurethanes nezimoyezihlalo zemoto kanye ne-polyurethanes eqinile ye
ukufakwa kwe-thermal nomsindo.Ngaphandle kokungabaza, izici ezibaluleke kakhulu ze-polyurethanes
ezimotweni kunesisindo esiphansi esihambisana namandla aphezulu emishini.Lezi zici zithuthukisa i
imayela, ukonga kwezindleko zikaphethiloli, nokuphepha uma kushayisana (18, 19).Ama-polyurethanes nawo asetshenziswa ekugqokeni kwezimoto.Izembatho zibalulekile ezimotweni, njengoba zinikeza ukumelana nokugqwala ezinsimbi ezisetshenziswa ezingxenyeni zomzimba.Futhi zinikeza umphumela ocwebezelayo ukwenza izimoto zimelane nesimo sezulu, ziqine, futhi zihehe.Izimboni zezimoto nefenisha zisebenzisa izinqamuleli zomlilo ezimbotsheni zazo ukuze zithole ukuphepha okwengeziwe.Omunye umsebenzi wahlola ubukhona bezinto ezivimbela amalangabi kanye nomthelela wazo othulini lwezimoto (20).I-2,2-bis(chloromethyl)-propane-1,3-diyltetrakis(2-chloroethyl) bisphosphate, eyaziwa ngokuthi i-V6, isetshenziswa njenge-flame retardant kugwebu lemoto, eliqukethe i-tris(2-chloroethyl) phosphate njenge-carcinogen eyaziwayo. inhlanganisela (Umfanekiso 12).Ukugxila ebangeni le-5-6160 ng/g ye-V6 othulini lwemoto kwabonwa, okwakuphezulu kakhulu kunothuli lwasendlini.Nakuba i-halogen-based flame 14 Gupta neKahol;I-Polyurethane Chemistry: I-Polyols Evuselelekayo kanye ne-Isocyanates ACS Symposium Series;I-American Chemical Society: Washington, DC, 2021. ama-retardants ayasebenza ekucimeni umlilo, ubuthi babo ekukhishweni kwamagesi e-carcinogenic
drawback enkulu.Inani elifanelekile locwaningo linikelwe ekuhlanganiseni izinto ezintsha eziyizinqamuli zomlilo ezisebenza kahle ngaphandle kwezinga lobuthi eliboniswa ama-flame retardants asuselwa ku-halogen.Iningi lezinto ezisetshenziswe njengezinqamuli zomlilo eziluhlaza zisekelwe kuma-oxide ensimbi(21), i-nitrogen (22), i-phosphorus (23), ne-carbon (24).I-Aluminium trihydroxide, i-melamine, i-melamine cyanrate, i-melamine phosphate, i-ammonium phosphate, i-phosphorus ebomvu, i-phosphate esters, i-phosphinates, i-phosphonates, i-carbon black, ne-graphite enwebekayo ziyizibonelo ezimbalwa ze-retardants esebenzayo futhi eco-friendly.Kucace bha ukuthi ukuthuthukiswa nocwaningo lwamalangabi—okwethula ukuhambisana okufanele nama-polyurethanes futhi angakhiqizi intuthu enobuthi ngesikhathi senqubo yokusha—kubaluleke kakhulu.

Isimemezelo:Isihloko sicashunwe ku-Introduction to Polyurethane Chemistry Felipe M. de Souza, 1 Pawan K. Kahol, 2 kanye no-Ram K.Gupta *,1 .Ukuxhumana nokufunda kuphela, ungenzi ezinye izinjongo zezohwebo, akumele imibono nemibono yenkampani, uma udinga ukuphrinta kabusha, sicela uxhumane nomlobi wokuqala, uma kukhona ukwephulwa, sicela usithinte ngokushesha ukuze wenze ukucubungula ukususa.