Cov nplaum polyurethane nyob rau sab saum toj ntawm cov npe ntawm cov nplaum zoo tshaj plaws. Nws yog siv ntau hauv kev lag luam thiab muaj peev xwm sib khi cov khoom siv xws li ntoo, hlau, iav, ceramics, thiab lwm yam.
Niaj hnub no, polyurethane kua nplaum yog ib qho zoo tshaj plaws niaj hnub ua kua nplaum. Nws yog siv ntau hauv kev ntsuas ntawm tib neeg kev ua ub ua no, tshwj xeeb, rooj tog ntau lawm, kev tsim kho, tshuab siv tshuab, etc. iav, ntoo, nthuav polystyrene, pob zeb hauv av tsiaj, ua vaj tse, thiab lwm yam.
Adhesive khoom
Qhov tshwj xeeb tshwj xeeb ntawm cov khoom siv nplaum no yog lub peev xwm nthuav tawm hauv ntim thaum kho. Qhov txau me me no ua rau nws muaj peev xwm sau txawm tias qhov khoob me me nrog rau cov khoom siv uas tsis tshem tawm cov chaw kom koom nrog. Cov nyiaj sib khi rau cov nplaum yog cov tshuaj tiv thaiv mus rau qhov hloov kub ceev mus txog 40 ° C. Nws tsis yog ntshai ntawm cryogenic kub, roj, roj av, dej, hluav taws xob thiab kev co. Thiab vim tias tsis muaj ntxhiab tsw thiab cov kuab tshuaj nyob rau hauv kev sib xyaw ua ke ntawm cov khoom, koj tuaj yeem ua tiav qhov kev nyab xeeb siab tshaj plaws thaum lub sijhawm ua haujlwm thiab ib puag ncig kev ua phooj ywg. Cov nplaum polyurethane yog tiv taus pwm thiab pathogenic fungi. Nws tuaj yeem ua haujlwm nyob rau hauv qhov ntsuas kub ntau yam sib txawv ntawm -60 txog +120 ° C.
Adhesive cov yam ntxwv
Muaj ob hom polyurethane nplaum rau ntawm kev muag: ib qho-tivthaiv thiab ob-tivthaiv. Ib-ntu nplaum ua kom tawv tawv nrog dej, uas ua rau tus neeg thov yooj yim siv. Cov khoom siv ob-kis tau los ntawm kev sib xyaw xws li polyol thiab isocyanate. Hom tom kawg ntawm kua nplaum yog qhov yooj yim thiab yooj yim siv, thiab nws cov nqi viscosity siab muab kev teeb tsa zoo thawj zaug. Thaum isacyanates sib cuam tshuam nrog atmospheric noo noo, ib qho tshuaj lom neeg cov tshuaj tiv thaiv tshwm sim, vim qhov kev sib txuas ntawm cov kab ke uas muaj kev sib txuas ntawm cov molecular raug tsim, muab kev sib zog tshaj plaws.
Yooj yim-raws-siv nplaum yog qhov tseem ceeb thaum muab cov pem teb parquet. Rau qhov no, raws li txoj cai, ob-thooj sib xyaw ua ke siv uas tsis muaj kuab tshuaj thiab dej. Cov lus qhia ntawm lub ntsej muag ua kom tawv tawv txhawm rau txo cov sij hawm ziab ntawm cov nplaum cov yeeb yaj kiab, nce hydrolytic tsis kam thiab nplaum lub zog. Kev noj tshuaj yog nyob ntawm cov khoom siv thiab yog 150-500 g / m². Kev ruaj khov yog vim hloov kho thiab ntev li 1 txog 4 teev. Cov nplaum polyurethane muaj xim zoo nkauj los ntawm beige mus rau xim av tsaus, thiab lub zog shear ntawm cov lus sib khi nyob ntawm cov khoom siv sib txuas thiab ntau li ntawm 2 txog 26 MPa.
