Peb siv cov ncuav qab zib los txhim kho koj qhov kev paub.Los ntawm kev txuas ntxiv mus saib lub vev xaib no, koj pom zoo rau peb siv cov ncuav qab zib.Xav paub ntxiv.
Polyurethane ua npuas ncauj (PU) feem ntau yog siv rau hauv kev tsim kho rau ntau lub hom phiaj, tab sis nrog kev thawb mus rau xoom emissions, cov ntaub ntawv zoo ib puag ncig tau txais kev saib xyuas ntxiv.Txhim kho lawv lub npe ntsuab yog qhov tseem ceeb.
Polyurethane ua npuas ncauj yog ib qho polymer uas muaj cov organic monomer txuas nrog urethane.Polyurethane yog cov khoom siv sib sib zog nqus nrog cov huab cua siab thiab cov qauv qhib ntawm tes.Polyurethane yog tsim los ntawm cov tshuaj tiv thaiv ntawm diisocyanate lossis triisocyanate thiab polyols thiab tuaj yeem hloov kho los ntawm kev suav nrog lwm cov ntaub ntawv.
Polystyrene ua npuas ncauj tuaj yeem ua los ntawm polyurethane ntawm qhov sib txawv hardness, thiab lwm yam ntaub ntawv kuj tuaj yeem siv rau hauv nws cov khoom.Thermoset polyurethane ua npuas ncauj yog ntau hom, tab sis qee qhov thermoplastic polymers kuj muaj.Cov txiaj ntsig tseem ceeb ntawm cov thermoset ua npuas ncauj yog nws qhov hluav taws kub tsis kam, versatility thiab durability.
Polyurethane ua npuas ncauj yog dav siv nyob rau hauv kev tsim kho kev lag luam vim nws cov hluav taws-resistant, lub teeb yuag structural thiab insulating zog.Nws yog siv los ua kom muaj zog tab sis lub teeb hnyav lub tsev thiab tuaj yeem txhim kho cov khoom zoo nkauj ntawm cov tsev.
Ntau hom rooj tog thiab ntaub pua plag muaj polyurethane vim nws versatility, nqi-zoo thiab durability.EPA cov kev cai xav kom cov khoom siv kho kom zoo kom tsis txhob muaj cov tshuaj tiv thaiv thawj zaug thiab zam cov teeb meem toxicity.Tsis tas li ntawd, polyurethane ua npuas ncauj tuaj yeem txhim kho qhov hluav taws kub ntawm lub txaj thiab rooj tog zaum.
Spray polyurethane ua npuas ncauj (SPF) yog thawj cov khoom siv rwb thaiv tsev uas txhim kho lub tsev lub zog thiab kev nplij siab ntawm cov neeg nyob.Siv cov ntaub ntawv rwb thaiv tsev no txo cov pa roj carbon monoxide emissions thiab txhim kho huab cua hauv tsev.
PU-raws li adhesives kuj tseem siv rau hauv kev tsim cov khoom ntoo xws li MDF, OSB thiab chipboard.Lub versatility ntawm PU txhais tau hais tias nws tuaj yeem siv rau ntau lub hom phiaj xws li suab rwb thaiv tsev thiab hnav tsis kam, kub tsis kam, mildew resistance, aging resistance, thiab lwm yam. Cov khoom siv no muaj ntau yam siv hauv kev tsim kho.
Txawm hais tias polyurethane ua npuas ncauj muaj txiaj ntsig zoo thiab siv ntau yam ntawm kev tsim vaj tsev, nws muaj qee qhov teeb meem.Nyob rau hauv xyoo tas los no, kev ruaj khov thiab rov ua dua tshiab ntawm cov khoom siv no tau raug nug ntau, thiab kev tshawb fawb los daws cov teeb meem no tau dhau los ua ntau hauv cov ntaub ntawv.
Lub ntsiab tseem ceeb txwv tsis pub muaj kev phooj ywg ib puag ncig thiab rov ua dua tshiab ntawm cov khoom siv no yog kev siv cov tshuaj lom neeg thiab tshuaj lom isocyanates thaum lub sijhawm tsim khoom.Ntau hom catalysts thiab surfactants kuj tseem siv los tsim polyurethane foams nrog cov khoom sib txawv.
Nws tau kwv yees tias kwv yees li 30% ntawm tag nrho cov khoom siv rov ua dua polyurethane ua npuas dej xaus rau hauv qhov chaw pov tseg, uas ua rau muaj teeb meem loj rau kev tsim kho kev lag luam vim tias cov khoom siv tsis yooj yim biodegradable.Kwv yees li ib feem peb ntawm polyurethane ua npuas ncauj yog siv dua.
Tseem muaj ntau yam yuav tsum tau txhim kho nyob rau hauv cov cheeb tsam no, thiab mus txog rau qhov kawg no, ntau cov kev tshawb fawb tau tshawb nrhiav txoj hauv kev tshiab rau kev rov ua dua tshiab thiab rov siv dua polyurethane ua npuas ncauj thiab lwm yam ntaub ntawv polyurethane.Txoj kev siv lub cev, tshuaj lom neeg thiab cov khoom siv roj ntsha feem ntau yog siv los rov qab ua npuas ncauj polyurethane rau kev siv nyiaj ntxiv.
Txawm li cas los xij, tam sim no tsis muaj kev xaiv rov ua dua tshiab uas muab cov khoom lag luam zoo, rov siv tau, thiab ruaj khov kawg.Ua ntej polyurethane ua npuas ncauj rov ua dua tuaj yeem suav tias yog qhov kev xaiv siv tau rau kev tsim kho thiab rooj tog kev lag luam, cov teeb meem xws li tus nqi, cov khoom lag luam qis thiab qhov tsis zoo ntawm cov khoom siv rov ua dua tshiab yuav tsum tau hais.
Daim ntawv, luam tawm thaum Lub Kaum Ib Hlis 2022, tshawb nrhiav txoj hauv kev los txhim kho kev ruaj khov thiab rov ua dua tshiab ntawm cov khoom siv tseem ceeb hauv tsev no.Txoj kev tshawb no, ua los ntawm cov kws tshawb fawb los ntawm University of Liege hauv Belgium, tau luam tawm hauv phau ntawv xov xwm Angewandte Chemie International Edition.
Txoj hauv kev tshiab no suav nrog kev hloov pauv kev siv cov tshuaj lom neeg thiab cov tshuaj reactive isocyanates nrog ntau cov ntaub ntawv zoo ib puag ncig.Cov pa roj carbon dioxide, lwm yam tshuaj phem ib puag ncig, yog siv los ua cov khoom siv raw hauv txoj kev tshiab ntawm kev tsim ntsuab polyurethane ua npuas ncauj.
Cov txheej txheem tsim khoom ib puag ncig zoo no siv dej los tsim tus neeg sawv cev foaming, ua cov tshuab foaming siv nyob rau hauv cov tsoos polyurethane ua npuas ncauj thiab ua tiav tsis txhob siv cov isocyanates ib puag ncig.Qhov kawg tshwm sim yog ntsuab polyurethane ua npuas ncauj uas sau ntawv hu ua "NIPU."
Ntxiv rau cov dej, cov txheej txheem siv cov catalyst los hloov cyclic carbonate, ib qho kev hloov ntsuab rau isocyanates, rau hauv cov pa roj carbon dioxide los ntxuav lub substrate.Nyob rau tib lub sijhawm, ua npuas ncauj hardens los ntawm reacting nrog amines hauv cov khoom.
Cov txheej txheem tshiab tau pom nyob hauv daim ntawv tso cai rau cov khoom siv tsawg-ceev cov khoom siv tsawg polyurethane nrog ib txwm muab faib.Kev hloov tshuaj lom neeg ntawm cov pa roj carbon dioxide pov tseg yooj yim nkag mus rau cyclic carbonates rau cov txheej txheem ntau lawm.Qhov tshwm sim yog ob qho kev txiav txim: kev tsim ntawm tus neeg sawv cev foaming thiab tsim ntawm PU matrix.
Pab neeg tshawb fawb tau tsim ib qho yooj yim, yooj yim-rau-siv modular technology uas, thaum ua ke nrog ib qho yooj yim thiab pheej yig ib puag ncig tus phooj ywg pib cov khoom, tsim ib tug tshiab tiam ntawm ntsuab polyurethane ua npuas ncauj rau kev tsim kho kev lag luam.Qhov no yuav ntxiv dag zog rau kev lag luam kev siv zog kom ua tiav net-zero emissions.
Txawm hais tias tsis muaj ib qho loj-haum-tag nrho txoj hauv kev los txhim kho kev ruaj ntseg hauv kev tsim kho kev lag luam, kev tshawb fawb txuas ntxiv mus rau ntau txoj hauv kev los daws qhov teeb meem tseem ceeb ntawm ib puag ncig.
Cov txheej txheem tshiab, xws li cov thev naus laus zis tshiab los ntawm University of Liege pab pawg, yuav pab txhim kho cov phooj ywg ib puag ncig thiab rov ua dua ntawm polyurethane ua npuas ncauj.Nws yog ib qho tseem ceeb los hloov cov tshuaj lom neeg uas siv hauv kev rov ua dua tshiab thiab txhim kho biodegradability ntawm polyurethane foams.
Yog tias kev tsim kho kev lag luam yog ua kom tau raws li nws cov kev cog lus net-zero emissions raws li lub hom phiaj thoob ntiaj teb kom txo tau tib neeg txoj kev cuam tshuam rau kev hloov pauv huab cua thiab lub ntiaj teb ntuj tsim, txoj hauv kev los txhim kho kev ncig yuav tsum yog lub hom phiaj ntawm kev tshawb fawb tshiab.Kom meej meej, txoj hauv kev "kev lag luam li niaj zaus" tsis tuaj yeem ua tau.
University of Liège (2022) Kev tsim kho kom ruaj khov thiab rov ua dua tshiab polyurethane foams [Online] phys.org.txais tau:
Tsev nrog Chemistry (lub vev xaib) Polyurethanes hauv Kev Tsim Kho [online] Buildingwithchemistry.org.txais tau:
Gadhav, RV et al (2019) Methods for recycling and disposal polyurethane waste: a review of Open Journal of Polymer Chemistry, 9 pp. 39–51 [Online] scirp.org.txais tau:
Tsis lees paub: Cov kev xav tau hais tawm ntawm no yog cov neeg sau ntawv hauv nws tus kheej lub peev xwm thiab tsis tas yuav cuam tshuam cov kev xav ntawm AZoM.com Limited T / A AZoNetwork, tus tswv thiab tus neeg teb xov tooj ntawm lub vev xaib no.Qhov kev tsis lees paub no ua ib feem ntawm cov ntsiab lus thiab kev siv ntawm lub vev xaib no.
Reg Davey yog tus kws sau ntawv ywj pheej thiab tus kws kho mob nyob hauv Nottingham, UK.Sau ntawv rau AZoNetwork sawv cev ua ke ntawm ntau yam kev nyiam thiab thaj chaw uas nws tau nyiam thiab koom nrog ntau xyoo, suav nrog microbiology, biomedical sciences thiab ib puag ncig kev tshawb fawb.
David, Reginald (23 Tsib Hlis 2023).Yuav ua li cas ib puag ncig tus phooj ywg yog polyurethane ua npuas ncauj?AZoBuild.Tau txais los ntawm https://www.azobuild.com/article.aspx?ArticleID=8610 Lub Kaum Ib Hlis 22, 2023.
David, Reginald: "Yuav ua li cas ib puag ncig tus phooj ywg yog polyurethane ua npuas ncauj?"AZoBuild.Kaum Ib Hlis 22, 2023
David, Reginald: "Yuav ua li cas ib puag ncig tus phooj ywg yog polyurethane ua npuas ncauj?"AZoBuild.https://www.azobuild.com/article.aspx?ArticleID=8610.(Tau txais lub Kaum Ib Hlis 22, 2023).
David, Reginald, 2023. Green Yog Polyurethane Foams li cas?AZoBuild, nkag mus rau lub Kaum Ib Hlis 22, 2023, https://www.azobuild.com/article.aspx?ArticleID=8610.
Hauv kev xam phaj no, Muriel Gubar, tus thawj tswj hwm ntu thoob ntiaj teb rau kev tsim kho cov ntaub ntawv ntawm Malvern Panalytical, tham txog cov kev sib tw ruaj khov ntawm kev lag luam cement nrog AzoBuild.
Hnub no International Women's Day, AZoBuild muaj kev zoo siab los tham nrog Dr. Silke Langenberg los ntawm ETH Zurich txog nws txoj haujlwm zoo thiab kev tshawb fawb.
AZoBuild hais lus rau Stephen Ford, tus thawj coj ntawm Suscons thiab tus tsim ntawm Street2Meet, txog cov thawj coj uas nws tau saib xyuas los tsim kom muaj zog, ruaj khov thiab muaj kev nyab xeeb dua rau cov neeg xav tau.
Kab lus no yuav muab cov ntsiab lus ntawm bioengineered tsev cov ntaub ntawv thiab sib tham txog cov ntaub ntawv, cov khoom, thiab tej yaam num uas yuav ua tau raws li kev tshawb fawb hauv daim teb no.
Raws li qhov yuav tsum tau decarbonize qhov chaw tsim thiab tsim cov tsev carbon-nruab nrab nce, kev txo cov pa roj carbon yuav yog qhov tseem ceeb.
AZoBuild tau tham nrog cov xibfwb Noguchi thiab Maruyama txog lawv txoj kev tshawb fawb thiab kev txhim kho rau hauv calcium carbonate pob zeb (CCC), cov khoom tshiab uas tuaj yeem ua rau muaj kev hloov pauv hloov pauv hauv kev tsim kho.
AZoBuild thiab architectural cooperative Lacol tham txog lawv txoj kev koom tes vaj tse nyob La Borda hauv Barcelona, Spain.Qhov project tau raug xaiv rau 2022 EU nqi zog rau Kev Kawm Txuj Ci - Mies van der Rohe nqi zog.
AZoBuild tham txog nws txoj haujlwm 85-tsev sib raug zoo nrog EU Mies van der Rohe Award finalist Peris + Toral Arquitectes.
Nrog rau 2022 nyob ib ncig ntawm lub ces kaum, kev zoo siab yog lub tsev tom qab kev tshaj tawm ntawm cov npe luv ntawm cov tuam txhab kos duab raug xaiv tsa rau European Union nqi zog rau Kev Kawm Txuj Ci - Mies van der Rohe nqi zog.
Post lub sij hawm: Nov-22-2023
