Puas yog polyurethane ua npuas ncauj rwb thaiv tsev muaj lub neej ua haujlwm ntev?
Ib zaug ntxiv, cov lus no tsis tuaj yeem hu ua qhov tseeb.
Ua ntej ntawm tag nrho cov, tsuas yog nrog polyurethane ua npuas ncauj nrog lub kaw-cell qauv tuaj yeem peb tham txog lub neej ua haujlwm ntev. Pheej yig qhib-pore xim uas yog siv los ntawm sab nraud thiab raug rau feem ntau atmospheric noo noo (txawm tias txo qhov ua tau los nag ncaj qha) tsis zoo li yuav kav ntev heev. Nyob rau hauv cov nqe lus ntawm hygroscopicity, lawv tsis zoo dua li tib cov ntxhia wool, thiab tham txog ntau xyoo ntawm kev ua haujlwm yog yam tsawg kawg nkaus.
Cov yeeb ncuab txaus ntshai tshaj plaws ntawm polyurethane ua npuas ncauj yog cov tiv thaiv ultraviolet ntawm lub hnub ci spectrum.
Qhov thib ob, txawm tias qhov zoo tshaj plaws kaw-cell polyurethane ua npuas ncauj, UV tivthaiv ntawm lub hnub ci spectrum yuav ib txwm ua rau lub neej luv luv. Cov khoom siv deconstruction, ua nkig, nkig, thiab pib succumb rau hnav thiab huab cua. Txawm tias qhov zoo tshaj plaws polyurethane ua npuas ncauj tshuab tuaj yeem poob txog li 1 hli hauv tuab ib xyoo vim raug tshav ntuj. Qhov no yog ib qho tsis zoo ntawm polyurethane ua npuas ncauj thiab yuav tsum tau coj mus rau hauv tus account thaum npaj ib txoj haujlwm rwb thaiv tsev.
Thib peb, cov khoom siv tsis zoo yuav yog vim qhov tsis raug ntawm cov khoom sib xyaw, ua txhaum ntawm cov txheej txheem txau (qhov no feem ntau yog qhov yuam kev ntawm ntau "chaw ua haujlwm" ua haujlwm hauv daim teb no, xws li kev siv cov khoom siv hluav taws xob tsawg los siv cov txheej txheem sab nrauv. mus rau phab ntsa). Qhov no dua qhia txog txoj cai xaiv ntawm tus neeg cog lus.
Tab sis feem ntau, yog tias tag nrho cov xwm txheej tsim nyog tau ntsib, ces peb tuaj yeem muaj kev nyab xeeb hais tias polyurethane ua npuas ncauj yog qhov tseeb ntawm txhua cov ntaub ntawv thaiv phab ntsa. Cov ntaub ntawv pov thawj yog nyob rau hauv kev rhuav tshem ntawm cov tsev qub nyob rau sab qaum teb Europe uas muaj hnub nyoog 50 xyoo lossis ntau dua - qhov chaw uas cov polyurethane npuas rwb thaiv tsev nyob ruaj khov thiab khaws nws cov khoom tseem ceeb.