Yog Polyurethane ua npuas ncauj yog lom?
Polyurethane ua npuas ncauj yog feem ntau nug rau nws txoj kev nyab xeeb - nws puas lom?
Polyurethane yog cov thermal rwb thaiv tsev khoom ua los ntawm isocyanate thiab polyether raws li cov khoom siv raw tseem ceeb. Nrog kev pab ntawm catalysts, nplaim taws retardants, thiab lwm yam ntxiv, nws yog cov khoom siv tshwj xeeb los ntawm cov khoom siv tshwj xeeb los ua cov polymer siab. Polyurethane ua npuas ncauj tuaj yeem faib ua npuas thiab ua npuas ncauj txhav. Cov npuaj muag muag muaj qhov qhib - cov tawv nqaij {} Tsim tau ib qho kaw - cov qauv ntawm tes.
Lub luag haujlwm tseem ceeb ntawm polyurethane muag ua npuas yog cushioning. Nws yog ib feem siv nyob rau hauv sofas, rooj tog, khoom ua si, rooj tog, thiab suab lub suab rwb thaiv tsev.
Rigid Polyurethane ua npuas dej yog ib hom khoom siv hluavtaws tshiab uas ua ke ob qho tib si rwb thaiv tsev thiab waterproofing. Nws muaj qhov tsawg heev thermal conductivity, tsuas yog 0.022-0.003 w / (m * k), uas yog li ib nrab ntawm extruded polystyrene (xps) cov laug cam. Yog li ntawd, nws yog dav siv nyob rau sab nrauv phab ntsa rwb thaiv tsev, cia cia khoom txias, thiab raj xa dej pipeline.
Coob tus neeg xav tias nws yog tshuaj lom lossis muaj formaldehyde.
Polyurethane rwb thaiv tsev cov ntaub ntawv muaj ob feem ntawm. Cov Dub tivthaiv, tseem hu ua Tshooj A, yog tsuas yog ortocyanate. Raws li MSDs (Khoom Siv Cov Ntaub Ntawv Kev Nyab Xeeb Kev Nyab Xeeb), thaum rhuab los yog txau, muaj peev xwm ua rau tawv nqaij ua xua, ua pa rau cov tawv nqaij, lossis mob ntsws. Kev caij nyoog lossis rov kis tau me me yuav ua rau muaj kev cuam tshuam me me rau lub qhov muag thiab tawv nqaij.
Cov dawb tivthaiv, lossis ib feem b, tsuas yog polyetic polyol. Raws li MSDS, ntev lossis rov qab sib cuag yuav ua rau muaj kev sib tiv thaiv me me rau lub qhov muag thiab tawv nqaij, tab sis nws tsis yog tshuaj lom. Leej twg txaus siab tuaj yeem tshawb xyuas cov ntaub ntawv cuam tshuam rau kev pom zoo.
Thaum polyurethane ua npuas ncauj yog tsim, cov npaus nws tus kheej tsis yog - pa. Cov ntxhiab tsw thaum lub sij hawm kho feem ntau yog los ntawm ammonia {2} zoo li cov tebchaw thiab feem ntau ploj hauv 24 teev. Nws tsis muaj formaldehyde lossis lwm cov tshuaj muaj teeb meem. Qhov tseeb, ntau cov khoom niaj hnub, xws li tso dej rau tub yees thiab dej sov, siv polyurethane ua npuas rau rwb thaiv tsev, uas ua pov thawj tias nws muaj kev nyab xeeb.
Yog tias koj tseem muaj kev txhawj xeeb, koj tuaj yeem nug daim ntawv qhia xeem los ntawm cov khw lossis muaj cov ntaub ntawv kuaj los ntawm lub chaw kuaj tshuaj tsim nyog.