Video: Polyurethane kua nplaum yog dab tsi?
2024 Tus sau: Stanley Ellington | [email protected]. Kawg hloov kho: 2023-12-16 00:17
Polyurethane nplaum nplaum yog cov kua nplaum yog ua ntawm tshuaj urethane polymers nrog tshuaj raws li pawg isocyanate, polyurethane nplaum tseem hu ua elastic nplaum , vim lawv muaj qhov txawv txav elasticity thiab elongation ua ntej qhov tawg tshwm sim (txog 600%), thiab kuj zoo li epoxy nplaum nyob nruj
Raws li txoj cai, polyurethane nplaum yog dab tsi?
Polyurethane nplaum nplaum , ces, yog yooj yim nplaum uas tshwm sim los siv tej yam polyurethane . Zoo li lawv cov kwv tij txheeb ze, cov epoxy, polyurethane nplaum yog 'structural nplaum ', thiab tuaj yeem siv los tsim cov ntawv cog lus muaj zog heev.
Ib tug kuj yuav nug, ua li cas polyurethane nplaum kho? Urethane Adhesives . Ib feem ntawm noo noo kho adhesives kho nyob rau ntawm cov dej noo nyob rau hauv lub substrate los yog cua. Ib qho me me ntawm carbon dioxide raug tso tawm thaum lub sijhawm kho uas, feem ntau, tsis muaj kev cuam tshuam rau txoj kev sib khi.
Tsis tas li ntawd, puas yog polyurethane kua nplaum?
Polyurethane muaj cov kuab tshuaj thiab lwm yam tshuaj lom cov tebchaw, xws li isocyanates, uas yuav offgas thaum siv.
Puas yog Gorilla Glue polyurethane raws?
Gorilla kua nplaum yog ib tug American brand ntawm polyurethane nplaum. Lawv paub txog lawv qhov qub Gorilla kua nplaum , uas yog thawj zaug muag rau cov neeg tau txais kev pab nyob rau hauv 1999. Lub tuam txhab txij li thaum nws tau branched tawm los ua ib txoj kab ntawm cov khoom zoo sib xws, xws li tapes, epoxies, thiab lwm yam adhesives. Lub tuam txhab yog raws hauv Sharonville, Ohio.
Pom zoo:
Dab tsi ntawm cov kua nplaum yog titebond?
Titebond III Ultimate Wood Glue
Dab tsi ntawm cov kua nplaum yog biodegradable?
Muaj ob hom dej-soluble polymer hom: polyvinyl cawv (PVOH) thiab ethylene vinyl cawv (EVOH). PVOH tau yooj yim biodegradable thiab dej soluble. Nws yog feem ntau siv nyob rau hauv ntau cov pa nplaum tshuab. Nws feem ntau sib xyaw nrog polyvinyl acetate (PVAc) rau cov nplaum ntoo
Dawb ntoo kua nplaum yog dab tsi?
Polyvinyl acetate (PVA), tseem hu ua 'dawb kua nplaum' los yog 'hobby thiab khoom siv tes ua', tsis muaj tshuaj lom thiab siv tau yooj yim, tab sis nyuaj kho vim feem ntau cov kua nplaum (xws li PVA nws tus kheej) tsis ua raws li cov kua nplaum PVA hardened. . Elmer's Glue-All yog ib qho piv txwv ntawm PVA nplaum
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Dab tsi yog cov khoom xyaw ntawm PVA kua nplaum?
Synthetic 'glues' lossis adhesives feem ntau yog ua los ntawm kev sib xyaw ntawm polyvinyl acetate (PVA), dej, ethanol, acetone thiab lwm yam khoom. Dej yog siv los hloov cov kua nplaum sib xws; lwm cov khoom xyaw tswj therate uas cov kua nplaum dries tawm