Extruded polystyrene (XPS) board thev naus laus zis tau mus txog 95% thev naus laus zis kom loj hlob, txhais tau tias nws yog tus paub tab thiab npaj rau loj - daim ntawv thov. Saib ntawm daim ntawv thov patent, tus lej tau nce los ntawm 943 hauv 2012 txog 4822 xyoo 2020, qhia tau tias muaj kev nce ntxiv hauv kev ua haujlwm thev naus laus zis. Txawm hais tias tus naj npawb ntawm cov ntawv thov tau poob qis me ntsis txij li xyoo 2020 mus ntxiv (xws li, 4476 hauv 2021), nws tseem nyob rau theem siab tag nrho. Nyob rau hauv cov nqe lus ntawm tus naj npawb ntawm cov ntaub ntawv kawm tau luam tawm, thaum muaj kev hloov pauv los ntawm 2015 txog 2023, tag nrho cov lej tseem nyob ruaj khov. Txij li xyoo 2020, cov ntawv xov xwm tau qhia txog qhov kev poob qis, uas qhia tau hais tias cov kev ua ub no tseem ceeb tau nkag mus rau lub sijhawm ntawm kev ruaj ntseg.
Cov lus qhia kev tshawb fawb tam sim no suav nrog cov txheej txheem ua npuas dej hauv ib puag ncig, xws li siv CO₂ ua ke ua npuas dej los hloov Freon, ua tiav xoom ozone txheej depletion thiab txo cov nqi thiab kev siv zog. Kev ua tau zoo ntawm cov khoom lag luam tsom mus rau ultra- thermal conductivity tsawg (λ Tsawg dua lossis sib npaug li 0.028 W / (m·K)), lub zog siab (compressive zog Ntau dua lossis sib npaug li 500kPa), thiab txhim kho qhov sib xws ntawm cov qauv ntawm tes los ntawm kev txhim kho cov txheej txheem tsim khoom kom zoo rau kev sib raug zoo ntawm thermal conductivity thiab compressive zog. Kev txhim kho kev sib raug zoo nrog cov ntaub ntawv txhawb nqa kuj yog qhov tseem ceeb; Piv txwv li, hloov cov hmoov polymer tuaj yeem txhim kho kev sib raug zoo ntawm XPS cov laug cam thiab cov ntawv cog lus hauv cov kab hluav taws xob sab nraud, thiab cov ntshiab acrylic-raws li cov hmoov nplaum yog cov hmoov polymer zoo heev.