Cov ntaub ntawv tseem ceeb rau lub teeb- thaiv cov yeeb yaj kiab dub feem ntau yog cov polymer-raws li, suav nrog polyethylene (PE), polypropylene (PP), thiab polyester (PET). Cov ntaub ntawv hauv paus no txiav txim siab txog zaj duab xis lub hauv paus tshuab thiab ua cov khoom ua haujlwm -xws li yoog raws, tensile lub zog, thiab qhov ruaj khov ntawm qhov ntev- thiab tsim cov khoom tseem ceeb ntawm cov yeeb yaj kiab cov qauv.
Cov pa roj carbon dub yog qhov tseem ceeb tshaj plaws ntxiv rau kev ua tiav lub teeb - thaiv kev ua haujlwm. Muaj lub teeb tshwj xeeb- lub peev xwm nqus tau, nws nqus tau lub teeb pom kev zoo thiab tiv thaiv kev sib kis, ua haujlwm ua qhov tseem ceeb ntawm cov khoom muab tub lim uas qhia lub teeb- thaiv kev ua haujlwm. Cov yam ntxwv xws li qhov loj me, cov qauv morphology, thiab cov℃ntawm dispersion nyob rau hauv cov resin ncaj qha cuam tshuam rau zaj duab xis lub teeb - thaiv kev ua tau zoo thiab qhov sib xws ntawm nws cov tsos.
Ntau tus neeg sawv cev pabcuam kuj tau koom nrog thaum tsim khoom los txhim kho kev ua haujlwm thiab xaus- siv kev ua haujlwm; cov no muaj xws li antioxidants, lubricants, dispersing agents, thiab ua stabilizers. Cov additives no pab txhim kho yaj ntws thiab tiv thaiv cov khoom degradation thaum lub sij hawm ua, thaum tib lub sij hawm boosting zaj duab xis stability thiab durability, kom ntseeg tau zoo ib yam tag nrho cov kev ua tau zoo nyob rau hauv ntau haiv neeg daim ntawv thov ib puag ncig.
