Nylon yog Polyamide: Kawm txog PA66 rau cov chaw tsham kawm kub

Lus nug "nylon yog polyamide" yog qhov tseeb txog kem, vim hais tias Nylon yog saib luaj li cas los sawv ceem rau ib qho chaw tsim khoom siv los sawv ceem rau ib qho muaj nuj nqi ntawm cov khoom tsim los uas nyob rau hauv qab lub neej polyamide. Lub npe "polyamide" qhia txog ib qho chaw khoom uas muaj caij rooj amide (-CO-NH-) ua yam ntxwv tshwm sim hauv qhov chaw pheej ntawm lawv. Cov rooj amide no tsim los ntawm kev sib poob, thiab qhov sib txig siab tshaj plaws uas tshwm sim yog qhov tseem ceeb rau qhov tseem ceeb ntawm qhov zog siab, zoo siab, thiab kev txaus siab rau kub ntawm cov khoom no. thaum DuPont tsim cov polyamide tsim los thawj taj nyob rau hauv xyoo 1930s, lawv tau sau npe nws nygor "Nylon," ib lub npe uas tau nthuav dav heev kom nws tuaj yeem siv nyob qhov twg los. Yog li, tag nrho nylon yog polyamides, tab sis tsis yog tag nrho polyamides yuav hu nyiag nylon; piv txwv li, cov polyamides siv txuj ci thiab aromatic feem ntau hu los ntawm lwm npe. Cov ntsiab luj tshaj plaws yog Nylon 6 (Polyamide 6) thiab Nylon 66 (Polyamide 66), qhov leej twg qhia txog qhov tsim kho kem ntawm lawv. Nylon 6 tsim los ntawm kev poob dej polymerization ntawm caprolactam, tshwm sim ib qho polymer uas qhov rooj rooj tshiab muaj 6 atom carbon. Nylon 66, npawg, tsim los ntawm kev polycondensation ntawm hexamethylenediamine (6 atom carbon) thiab adipic acid (6 atom carbon), yog li qhov npe '66'. Qhov txiav txim siab no muaj qhov txiav txim siab: Nylon 66 feem ntau muaj qhov kub khib siab dua thiab zoo dua, thaum Nylon 6 feem ntau muaj kev txaus siab rau kev puag ncig zoo dua thiab kev tsim kho. Txij li paub tias nylon yog ib qho ntawm polyamide yog ib qhov tseem ceeb rau cov neeg tsim kho thiab neeg kho, vim nws qhia txog qhov sib phau ntawm ib lub npe tsim khoom uas muaj nuj nqi thiab lub tswv yim kho mob uas qhia txog qhov kev ua haujlwm ntawm nws nyob rau hauv kev siv ntawm fibers thiab textiles mus rau cov khoom siv zog siab.