Qhov sib txawv ntawm Polyurethane raws li dej thiab Polyurethane raws li roj
Cov txheej txheem dej polyurethane uas ua los ntawm dej yog cov khoom siv polymer uas muaj cov khoom siv tiv thaiv dej zoo thiab tsis yooj yim rau ib puag ncig, nws muaj kev nplaum zoo thiab tsis nkag tau. Nws muaj kev nplaum zoo rau cov khoom siv cement xws li cov pob zeb thiab cov khoom siv hlau. Cov khoom no muaj cov tshuaj lom neeg ruaj khov thiab tuaj yeem tiv taus lub hnub ci mus sij hawm ntev. Nws muaj cov yam ntxwv ntawm kev ywj pheej zoo thiab kev ntev ntev.
Cov yam ntxwv ntawm kev ua tau zoo ntawm cov khoom
1. Qhov tsos: Cov khoom yuav tsum tsis muaj pob tom qab do thiab nyob rau hauv ib lub xeev sib xws.
2. Nws muaj lub zog tensile siab, siab elongation, zoo elasticity, kev ua tau zoo hauv qhov kub siab thiab qis, thiab kev hloov pauv zoo rau qhov kev cog lus, tawg, thiab deformation ntawm lub substrate.
3. Nws cov nplaum zoo, thiab tsis tas yuav tsum tau siv primer rau ntau yam substrates uas ua tau raws li qhov yuav tsum tau ua.
4. Lub txheej txheej qhuav thiab ua ib daim zaj duab xis tom qab ntawd nws tsis ntshai dej, tsis ntshai xeb, tsis ntshai pwm, thiab tsis ntshai qaug zog.
5. Nws qhov kev ua tau zoo ib puag ncig zoo, vim nws tsis muaj cov khoom benzene lossis cov thee tar, thiab tsis tas yuav muaj cov kuab tshuaj ntxiv thaum lub sijhawm tsim kho.
6. Nws yog ib yam khoom uas muaj ib feem xwb, siv tau thaum txias thiab yooj yim siv.
Daim ntawv thov Scope ntawm cov khoom
1. Haum rau cov chav hauv av, chaw nres tsheb hauv av, tsheb ciav hlau qhib thiab qhov av
2. Chav ua noj, chav dej, pem teb slabs, balconies, ru tsev tsis-tshwm sim.
3. Kev tiv thaiv dej ntsug thiab kev tiv thaiv dej ntawm cov ces kaum, cov pob qij txha thiab lwm yam me me, nrog rau kev kaw cov pob qij txha tiv thaiv dej.
4. Tiv thaiv kom tsis txhob muaj dej nkag rau cov pas dej ua luam dej, cov dej phwj cuav, cov thoob dej, thiab cov kwj dej.
5. Tiv thaiv dej tsis nkag rau cov chaw nres tsheb thiab cov ru tsev plaub fab.
Cov txheej txheem dej tsis muaj roj polyurethane yog cov txheej txheem dej tsis muaj molecular siab uas ua rau qhuav thiab khov rau ntawm qhov chaw. Nws yog ua los ntawm isocyanates thiab polyols ua cov khoom siv tseem ceeb, nrog ntau yam khoom siv pabcuam xws li kev sib xyaw latent hardeners thiab plasticizers, thiab yog tsim los ntawm cov txheej txheem tshwj xeeb ntawm kev ua kom qhuav thiab polymerization kub siab. Thaum siv, nws yog siv rau ntawm cov substrate dej tsis muaj zog, thiab cov yeeb yaj kiab polyurethane dej tsis muaj zog, yoog tau thiab tsis sib xws yog tsim rau ntawm qhov chaw substrate los ntawm cov tshuaj tiv thaiv ntawm -NCO kawg pawg ntawm polyurethane prepolymer thiab cov dej noo hauv huab cua.
Cov yam ntxwv ntawm kev ua tau zoo ntawm cov khoom
1. Qhov tsos: Cov khoom yog lub cev sib xws uas tsis muaj gel thiab pob.
2. Ib qho khoom siv, npaj siv rau ntawm qhov chaw, kev tsim kho txias, yooj yim siv, thiab qhov yuav tsum tau ua rau cov dej noo ntawm cov substrate tsis nruj heev.
3. Kev nplaum zoo: Kev nplaum zoo rau cov pob zeb ua vaj tse, mortar, ceramics, plaster, ntoo, thiab lwm yam khoom siv hauv tsev, kev hloov pauv zoo rau qhov shrinkage, cracking thiab deformation ntawm lub substrate.
4. Zaj duab xis tsis muaj seams: Zoo adhesion, tsis tas yuav siv primer rau ntau yam substrates uas ua tau raws li qhov yuav tsum tau ua.
5. Lub zog tensile siab ntawm zaj duab xis, qhov loj elongation tus nqi, zoo elasticity, zoo adaptability rau lub shrinkage thiab deformation ntawm lub substrate.
6. Kev tiv thaiv tshuaj lom neeg, tiv thaiv kub tsawg, tiv thaiv kev laus, tiv thaiv pwm, ua haujlwm zoo tiv thaiv dej.
Cov roj polyurethane txheej tiv thaiv dej siv tau rau kev tsim kho dej tsis pub dej ntawm cov tsev tshiab thiab qub, ru tsev, qab nthab, chav dej, pas dej ua ke, cov haujlwm tiv thaiv pej xeem, thiab lwm yam. Nws kuj tseem siv tau rau kev tsim kho dej tsis pub dej ntawm cov kav hlau.
Qhov sib txawv ntawm polyurethane roj thiab polyurethane dej:
Cov roj polyurethane muaj cov khoom khov dua li cov dej polyurethane, tab sis nws yog ua los ntawm isocyanate, polyether, thiab ntau yam khoom siv pabcuam xws li cov neeg sawv cev sib xyaw latent curing thiab plasticizers, npaj los ntawm cov txheej txheem tshwj xeeb ntawm qhov kub siab, xws li kev tshem tawm dej thiab cov tshuaj tiv thaiv polymerization. Nws muaj qib kev ua qias tuaj ntau dua, piv rau cov dej polyurethane, uas yog cov khoom ntsuab thiab ib puag ncig tsis muaj kev ua qias tuaj. Nws yog qhov tsim nyog rau kev siv sab hauv tsev, xws li chav ua noj thiab chav dej.
Lub sijhawm tshaj tawm: Tsib Hlis-29-2024