Yuav ua li casPolyether Polyols rau AdhesivePuas yog Revolutionizing Ntau Industries Nrog Lawv Cov Khoom Zoo Tshaj 3?
Kuj tseem muaj ntau lwm yam kev siv:
3. Khaub Ncaws Polyurethane Adhesives:
- Tuam Tshoj yog cov chaw tsim khoom khau loj. Tom qab peb tiam ntawm txoj kev loj hlob, nrog rau kev paub thoob ntiaj teb ib puag ncig thiab muaj kev kub ntxhov hnyav ntxiv, lub cim thib plaub ntawm ib puag ncig tus phooj ywg hnyav-dawb thiab dej-raws li khau nplaum tau tshwm sim. Cov txheej txheem kev npaj rau dej-raws li polyurethanes tau dhau los ua neeg paub tab. Rau qee cov ntaub ntawv khau uas tsis muaj polarity zoo li SBS, tev lub zog ntawm polyurethane nplaum tsis ua raws li qhov yuav tsum tau ua. Los ntawm kev ntxiv tackifying resins thiab lwm yam kev hloov kho, nws muaj peev xwm tsim polyurethane khau adhesives nrog siab crystallinity, ceev crystallization ceev, siab cohesive zog, thiab zoo tagnrho tev lub zog.
4. Ntim Polyurethane Adhesives:
- Kev ntim khoom yooj yim, tseem hu ua cov kaus poom mos, tau dhau lub ntim nruj xws li yas, iav fwj, thiab cov kaus poom vim nws lub teeb yuag, yooj yim, lub neej txee ntev, kev nyiam huv, yooj yim cia thiab thauj, qhib tau yooj yim, khib nyiab tsawg, thiab zoo heev txee thov. Polyurethane adhesives, vim lawv cov kev ua tau zoo tshaj plaws, tuaj yeem sib txuas cov ntaub ntawv sib txawv ua ke kom tau cov yeeb yaj kiab sib xyaw nrog cov khoom xws li txias tsis kam, roj tsis kam, tshuaj tiv thaiv, pob tshab, thiab ua kom tsis zoo, ua rau lawv cov nplaum nplaum rau kev ua cov yeeb yaj kiab sib xyaw rau kev ntim khoom. nyob rau hauv ob qho tib si domestic thiab thoob ntiaj teb kev lag luam. Hauv kev lag luam nplaum hauv tsev, kev noj cov nplaum polyurethane hauv kev lag luam ntim khoom lag luam yog qib thib ob nkaus xwb rau kev lag luam khau. Muaj ntau ntau hom polyurethane adhesives rau ntim, xws li dej-raws li polyurethane adhesives, kub-melt polyurethane nplaum, hnyav-raws li polyurethane nplaum, thiab hnyav-dawb polyurethane nplaum. Feem ntau siv polyurethane kub-melt nplaum tuaj yeem muab faib ua ob hom:
(1) thermoplastic polyurethane elastomer kub-melt adhesives thiab (2) reactive kub-melt adhesives. Lub ntsiab tsis zoo ntawm thermoplastic hot-melt adhesives yog lawv cov viscosity siab, uas cuam tshuam rau cov txheej txheej zoo li. Reactive polyurethane hot-melt adhesives yog ib hom tshiab ntawm cov nplaum tsim los ntawm cov tsoos kub-melt adhesives, combining thawj tack ntawm cov tsoos kub-kua nplaum nplaum nrog cov zoo tshaj tom qab kho cov khoom ntawm polyurethanes, thiab muab kev sib txuas zoo rau ntau yam substrates. Nyob rau hauv lub tshav pob ntawm dej-raws li polyurethane nplaum rau ntim, kev siv emulsifiers los yog kev taw qhia ntawm hydrophilic ionic pawg nyob rau hauv molecules txo cov dej tsis kam, ua kev tshawb fawb los txhim kho cov dej tsis kam ntawm hotspot. Tsis tas li ntawd, vim dej muaj peev xwm ua kom sov siab, kev txhim kho cov khoom siv los txhim kho kom qhuav nrawm yog qhov teeb meem ceev.