Cov ntaub ntawv soj ntsuam ntawm PP-R yeeb nkab suav nrog cov khoom hauv qab no: qhov tsos, qhov loj me, lub zog hydrostatic, cov ntsiab lus tshauv, melting kub, oxidation induction lub sij hawm, oxidation induction lub sij hawm tom qab 95 ℃ / 1000h hydrostatic test, pigment dispersion, longitudinal rov qab, yooj yim sab hauv. Kev ntsuas siab nyob rau hauv cov nqaj cuam tshuam, yaj huab hwm coj tus nqi, lub teeb xa hluav taws xob thiab kev ntsuas qhov system haum.
Longitudinal shrinkage yog qhov taw qhia tseem ceeb los txiav txim siab kev ua haujlwm ntawm cov khoom siv thermoplastic yeeb nkab. Nws qhia txog kev ruaj ntseg ntawm cov yeeb nkab' s longitudinal yas hloov (tsuas yog vim thermal dimensional shrinkage) nyob rau hauv lub zog ntawm tshav kub. Piv txwv li, rau PP-R kav dej, nws yuav tsum tau hais tias lub shrinkage ntawm cov yeeb nkab ntev yuav tsum tsawg tshaj li 2% nyob rau hauv lub qhov cub ntawm 135 ° C. Tus nqi me dua, qhov zoo dua.
