Qhov kev sib raug zoo ntawm "nylon thiab polyamide" yog ib qho piv rau qee yam tshwm sim rau qee yam tshwm sim. Polyamide yog tsev neeg chemic loj uas muaj polymer nyob hauv ob txoj kab uas muaj amide nyob hauv lub kauj ruam ntxiv. Nylon yog daim ntawv loj tshaj plaws thiab famous tshaj plaws ntawm aliphatic polyamides. Ntawm qhov kev sib cuag, nyob rau hauv ntau qhov kev tsim kho thiab kev lag luam, cov lus no yog siv piv rau ib leeg, tshwj tsis yog thaum hais txog cov ntaub ntawv npaj PA6 thiab PA66. Tab sis, muaj qee yam sib txawv me me. "Polyamide" yog daim ntawv tseem ceeb dua, uas muaj ntau yam khoom siv tshwm sim txaus siab. Qhov no muaj semi-aromatic polyamides (PPA), uas muaj kev tiv thaiv zoo dua rau kub thiab kev tiv thaiv kim, thiab polyphthalamides, thiab bio-based polyamides xws li PA11 thiab PA12 uas muaj los ntawm castor oil. Thaum ib tug kws tshaj lij hu "polyamide," nws feem ntau txhais tau tias nws xav kom pom zoo rau qhov khoom tseem ceeb thiab ntau yam khoom siv tshwm sim. Thaum lawv hais tias "nylon," nws feem ntau txhais tau tias nws yog qhov tseem ceeb tshaj plaws, aliphatic tshaj plaws thiab qhov kev sib raug zoo. Ob qho no muaj qee yam tshwj tsis: zog meej meej thiab zoo, kev tiv thaiv zoo rau kev rub, kev tiv thaiv zoo rau kev phom sij, thiab kev tiv thaiv zoo rau kev tiv thaiv. Qhov kev tiv thaiv no yog ib qho tseem ceeb rau kev tsim kho, vim nws plasticizes khoom, nce zog tab sis khaws tsis zoo. Kev xaiv ntawm cov polyamides sib txawv, xws li nylon sib txawv, muaj kev ntsuas zog xws li melting point, kev tiv thaiv, kev tiv thaiv kim, thiab nqi rau kev tiv thaiv rau kev lag luam, yuav yog automotive gear, electrical connector, loss yog high-performance fiber.