1. Txhim kho qhov nruj thiab tawv. Qhov nce ntawm cov iav fiber ntau tuaj yeem ua rau muaj zog thiab nruj ntawm cov yas, tab sis cov tawv ntawm cov yas tib yam yuav txo qis. Piv txwv: Flexural modulus;
2. Txhim kho txhim kho thaum tshav kub kub thiab lub zog kub hloov pauv kub. Noj cov nylon ua piv txwv, iav fiber ntau nylon ntxiv. Lub tshav kub kub distortion yog nce los ntawm tsawg kawg ob zaug. Qhov kub tsis kam ntawm cov iav fiber ntau siv tam nylon tuaj yeem ncav cuag 220 degrees lossis ntau dua.
3. Txhim kho qhov ntev seem ruaj khov thiab txo qis ntsws;
4. Txo kev ua tsov rog thiab deformation;
5. Txo cov tsiaj me;
6. Vim tias cov tswm ciab nplaim taws ua haujlwm, nplaim taws retardant kev ua tau zoo yuav cuam tshuam rau cov nplaim rov ua haujlwm thiab cuam tshuam rau cov nplaim retardant nyhuv;
7. Txo qhov ci ntawm thaj;
8. nce hygroscopicity;
9. Cov iav fiber kho: Qhov ntev ntawm cov iav fiber ncaj qha cuam tshuam rau brittleness ntawm cov khoom. Yog tias lub iav fiber tsis daws zoo, lub luv fiber ntau yuav txo qhov kev cuam tshuam lub zog, thiab cov fiber ntau ntev yuav ua rau lub zog muaj zog. Txhawm rau ua kom lub brittleness ntawm cov ntaub ntawv tsis poob ntau heev, nws yog ib qhov tsim nyog los xaiv tej yam ntev ntawm cov iav fiber.
