Polyamide yog qhov siv rau khoom lag luam yog daim ntawv ntau yam thiab meej ntau ntawm kev tsim kho tshuab polymer uas muaj nyob zoo hauv kev tshuab, kev txheat thiab kev kem. Txhawm rau kev tsim kho tshuab thermoplastics, lawv ua kom pom zoo dua tag nrho cov khoom lag luam thiab cov polymer muaj ceev ntau nqi. Qhov tseem ceeb tshaj plaws yog qhov zog loj hauv qhov chaw thiab kev tiv thaiv, kev tiv thaiv zoo tsha, thiab qhov friction tsawg, uas ua rau lawv zoo tshaj plaws rau cov khoom siv tsha tau yooj yim xws li gears thiab bearings. Lawv txhim kho zoo hauv qhov kub ntev, uas tuaj yeem siv ntev txog 80-120°C, thiab tseem ntev dua rau cov pa roj kub. Qhov tseem ceeb tshaj plaws yog qhov txaus siab; lawv yuav dab tsi dej los ntawm dej ntsiab, uas muaj feem ntau rau qhov kev pab pawg. Tab sis, tej dej uas tau dhau mus yuav pab ntxiv zog thiab kev tiv thaiv, tab sis nws kuj yuav cuam tshuam rau qhov meej thiab ua rau nws hla. Qhov no yuav tsum tau ua kom meej meej rau cov ntaub ntawv test kom pom zoo dua thiab kom meej meej rau kev tsim kho kom raug rau qhov hla nyob hauv qhov chaw muaj dej ntsiab. Polyamides kuj muaj kev tiv thaiv zoo rau roj, dej ntxias, thiab ntau yam khoom kem, tab sis lawv tuaj yeem raug rwb thaum muaj acid loj thiab oxidizing agents. Lawv tuaj yeem tsim kho los ntawm tag nrho cov kev tsim kho tshuab, tshaj tshwz yog injection molding thiab extrusion. Cov neeg muaj ntau yam (PA6, PA66, PA11, PA12, PPA), txhua qhov muaj qhov tshwm sim ib yam nkaus hauv kev dab tsi dej ntsiab, kev txheat, thiab kev tiv thaiv kem. Qhov kev pib no ntawm zog, kev nyab xeeb, thiab kev nyab xeeb txheat ua rau polyamide yog qhov xaiv thawj rau kev siv ntau hauv kev lag luam, kev faib tshuab, khoom siv hauv tsev, thiab cov chaw tsim khoom.