Qhov Tseem Ceeb Qhov txawv - Polyurethane vs Polycrylic
Polyurethane thiab polycrylic yog dav siv los ua cov txheej txheem los tiv thaiv ntau yam ntawm cov khoom hauv tsev. Ob leeg yog cov hluavtaws polymers uas tau siv dav los ua rheological modifiers vim lawv cov khoom tuaj yeem hloov tau yooj yim los ntawm kev hloov cov tshuaj tiv thaiv. Qhov sib txawv tseem ceeb ntawm polyurethane thiab polycrylic yog polycrylic muaj cov non-cross-linked copolymers ntawm acrylic acid, methacrylic acid, thiab lawv cov esters yooj yim, whereas polyurethane muaj urethane txuas nrog ntau pawg ua haujlwm nyob ntawm daim ntawv thov.
YPolyurethane yog dab tsi?
Polyurethane yog ib hom polymer uas muaj cov urethane txuas hauv cov saw hlau polymer. Cov pab pawg urethane ntshiab (-NH. CO. O-) feem ntau tsis muaj pawg ua haujlwm loj. Txawm li cas los xij, nws tseem tuaj yeem koom nrog cov pab pawg uas xav tau rau hauv lub network polymer txhawm rau kom tau txais cov khoom xav tau uas yuav haum rau ib daim ntawv thov tshwj xeeb. Vim tias muaj peev xwm no, polyurethane tuaj yeem tau txais hauv daim ntawv ntawm cov khoom siv thermosetting nruj lossis mos elastomer. Feem ntau, thermosetting polyurethanes muaj lub zog tensile siab heev, puas ua hauj lwm, toughness, thiab siab degradation kuj. Qhov tseem ceeb tshaj plaws, nws tuaj yeem siv los ua biomaterial vim nws biocompatibility.
Daim duab 01: Tsheb txaj liner siv ArmorThane polyurethane txau-txheej txheej tiv thaiv
thawj polyurethane elastomers tau tsim los ntawm reacting high-molecular hnyav glycols thiab aromatic diisocyanates. Thermoplastic polyurethane elastomers tau pom thawj zaug hauv xyoo 1958. Tam sim no, polyurethanes yog tsim los ntawm reacting polyol (ib qho cawv uas muaj ntau tshaj ob pawg reactive hydroxyl) nrog diisocyanate. Vim muaj ntau hom diisocyanates thiab ntau yam ntawm polyols, nws muaj peev xwm ua ke ib polyurethanes nrog ib tug dav spectrum ntawm cov khoom uas ua tau raws li ntau hom kev siv. Ntxiv mus, qhov xwm txheej ntawm polyurethane elastomers tuaj yeem tswj tau los ntawm kev xaiv ntawm monomers, monomer ratios, sib txuas ntxiv, thiab cov txheej txheem ntawm polymerization. Tsawg ntom ntom ntom, yoog raws thiab nkees tsis kam siv lub zog cushions, thaum lub zog thiab ruaj khov yog siv rau cov ntawv thov kev tsim khoom. Thermal rwb thaiv tsev, rigidity, thiab lub zog ntawm polyurethane yog ib qho tseem ceeb nyob rau hauv lub tsev vaj huam sib luag, thaum lub hluav taws xob rwb thaiv tsev, roj kuj, thiab rigidity yog txiav txim siab thaum siv lawv nyob rau hauv cov khoom siv hluav taws xob thiab hluav taws xob. Ntxiv mus, polyurethanes yog dav siv nyob rau hauv ntau yam kev siv, xws li, machinery, rooj tog, xim, sealants, adhesives, textiles, ntawv-ua, ntim, thiab tshuaj.
YPolycrylic yog dab tsi?
Polycrylic yog lub npe ntawm cov xim tiv thaiv dej uas yog tsim los siv cov polyacrylates. Acrylic coatings yog heev resistant rau dej. Yog li ntawd, polycrylic yog dav siv los ua txheej txheej los tiv thaiv ntoo thiab lwm yam khoom siv hauv tsev los ntawm dej thiab lwm yam kuab tshuaj. Polycrylic muaj nyob rau hauv ob hom: siab gloss thiab satin tiav. Zoo li polyurethane coatings, polycrylic tuaj yeem siv nrog cov menyuam los yog lub raj mis tsuag. Tsis zoo li feem ntau cov roj-raws li polyurethanes, polycrylic yog meej meej thiab tsis khaws cov xim ntawm qhov chaw.
Daim duab 02: Polycrylic
Polycrylic yog cov khoom lag luam pheej yig heev uas tuaj yeem ua tau zoo rau kev siv rau ntawm qhov chaw ntoo xws li maple, birch, tshauv, thiab lwm yam. Tsis tas li ntawd, polycrylic kuj tau sib xws nrog cov dej-raws li ntoo. Cov txheej yog ruaj khov thiab haum rau cov khoom siv niaj hnub xws li rooj thiab rooj. Vim tsis muaj viscosity tsawg, polycrylic yog qhov nyuaj rau kev thov, tshwj xeeb tshaj yog nyob rau saum npoo. Thaum piv nrog polyurethane coatings, polycrylic coatings qhuav sai heev, yog li nws yog ib qho nyuaj heev rau siv rau ntawm qhov chaw loj. Cov yeeb yaj kiab nyias raug pom zoo vim tias cov yeeb yaj kiab tuab ua rau muaj cov kua mis.
Qhov txawv ntawm Polyurethane thiab Polycrylic yog dab tsi?
YPolyurethane vs Polycrylic |
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| Polyurethane yog ib hom polymer uas muaj cov urethane txuas hauv cov saw hlau polymer. | Polycrylic yog lub npe ntawm cov xim tiv thaiv dej uas yog tsim los siv polyacrylates. |
| Polyurethane muaj urethane txuas. | Polycrylic muaj cov copolymer ntawm acrylic acid, methacrylic acid, thiab lawv cov esters yooj yim. |
| Daim ntawv thov | |
| Polyurethane yog siv rau hauv txheej, tshuab, rooj tog, pleev xim, sealants, nplaum, textiles, ntawv ua, ntim, thiab tshuaj. | Polycrylic yog siv los ua cov txheej txheem dej. |
| Yam txheej txheej | |
| Polyurethane yog dej thiab roj raws. | Polycrylic yog dej raws. |
| Polyurethane roj-raws li cov yeeb yaj kiab yog daj, thaum cov yeeb yaj kiab dej yog pob tshab. | Polycrylic films yog pob tshab. |
| Kaw Resistance | |
| Polyurethane muaj kev khawb siab heev. | khawb tsis kam yog tsawg piv rau polyurethane txheej. |
| Lub Sijhawm Qhuav | |
| Polyurethane siv sijhawm qee lub sijhawm kom qhuav. | Polycrylic dries sai heev. |
| Surface | |
| Polyurethane muab qhov ci ntsa iab | Polycrylic tsis muab qhov ci ntsa iab. |
Summary – Polyurethane vs Polycrylic
Polyurethane thiab polycrylic yog dav siv hluavtaws polymers. Polyurethane yog dav siv nyob rau hauv ntau daim ntawv thov xws li pleev xim, nplaum, tshuab, hluav taws xob vim lawv cov khoom uas tuaj yeem hloov pauv ntawm cov roj hmab thiab cov qib yas. Polycrylic yog cov xim dej ua lag luam uas muab cov khoom siv ruaj khov, tshwj xeeb tshaj yog rau cov ntoo uas nquag siv. Polycrylic txheej yog qhov nyuaj rau kev thov thaum piv nrog polyurethane txheej. Txawm li cas los xij, polycrylic txheej yog yooj yim tshem tau tab sis tsis tshua muaj zog dua polyurethane txheej. Qhov no yog qhov txawv ntawm Polyurethane thiab Polycrylic.
Download PDF Version ntawm Polyurethane vs Polycrylic
Koj tuaj yeem rub tawm PDF version ntawm kab lus no thiab siv nws rau offline hom phiaj raws li daim ntawv ceeb toom. Thov download PDF version ntawm no Qhov txawv Ntawm Polyurethane thiab Polycrylic
