Polyurethane elastomer yog ib tug siab polymer ntawm yas thiab roj hmab nyob rau hauv cov nqe lus ntawm nws modulus, feem ntau suav nrog polyurethane compound roj hmab, polyurethane casting roj hmab, polyurethane dej latex thiab polyurethane thermoplastic. Polyurethane tawv (PU tawv), polyurethane nplaum, polyurethane txheej, polyurethane elastic fiber thiab polyurethane ua npuas ncauj roj hmab yog txhua daim ntawv thov tshwj xeeb uas tau los ntawm plaub hom roj hmab saum toj no. Cov polyurethane elastomer tau muab faib ua kaum ob yam uas tau piav qhia hauv qab no.
(1) Lub kneading hom polyurethane elastomer yog tsim rau hauv ntau yam khoom los ntawm tib txoj kev ua raws li cov roj hmab ntuj. Vulcanization yog vulcanization molding txheej txheem nyob rau hauv uas cross-linking yog nqa tawm los ntawm cov tshuaj bonds. Tus neeg sawv cev vulcanizing tuaj yeem yog peroxide (xws li DCP), sulfur thiab polyisocyanate, lossis tus neeg sawv cev vulcanizing siv ua ke nrog peroxide thiab polyisocyanate. Fillers tuaj yeem muab ntxiv kom txo tau cov nqi, cov tshuaj ntxiv tuaj yeem ntxiv los txhim kho cov khoom siv dag zog, thiab ntau yam khoom ntxiv tuaj yeem ntxiv los txhim kho qee yam khoom.
(2) Pouring thiab acid casting molding ntawm cam khwb cia hom polyurethane ntxoov ntxoo elastomer tuaj yeem nchuav rau hauv ntau yam khoom siv chess-puab. Nws tuaj yeem siv los ua polyurethane txheej nrog hnyav hnyav, thiab nws tuaj yeem pleev xim rau hauv cov tshuaj tsuag txheej: cov ntaub tuaj yeem impregnated nrog cov kuab tshuaj, thiab tom qab ntawd ua tiav rau hauv suede khoom; nws tseem tuaj yeem muab tshuaj tsuag rau ntawm daim ntaub nrog cov kuab tshuaj los ua cov plaub hau dag, thiab lwm yam. Cov khoom siv no tuaj yeem siv los ua cov khoom siv paving, cov xim pleev xim hauv chaw ntau pob, chaw ntau pob khiav, cov khoom siv dej tsis zoo rau kev tsim kho, sab hauv thiab sab nrauv pleev xim rau rooj tog thiab phab ntsa, thiab lwm yam. Polyurethane casting roj hmab tuaj yeem ua rau ntau yam muaju los ntawm kev ntxiv cov catalysts tsim nyog los ntawm chav tsev kub vulcanization, thiab tuaj yeem ua tiav rau hauv cov roj hmab elastic los ntawm kev ntxiv tus neeg sawv cev foaming.
(3) Polyurethane dej latex Polyurethane dej latex yog cov txheej txheem ntawm polyurethane elastomer, uas yog hydrophilic thiab hydrophobic; uas yog, qee pawg tuaj yeem yaj hauv dej thiab qee pawg tsuas tuaj yeem yaj hauv cov kuab tshuaj xwb. Polyurethane dej latex tuaj yeem siv los ua cov coatings thiab cov nplaum, cov ntaub ntawv kho kom zoo nkauj thiab cov ntaub ntawv paving. Impregnated fabrics tuaj yeem siv los ua cov khoom siv ntxiv; tuaj yeem ua ntau yam ntawm lub zog siab laminates. Nws tuaj yeem siv los ua tus neeg sawv cev xov thiab ntaub xov xov, thiab kev ua haujlwm ntawm kev sib txuas ntawm cov dej latex tau ntes nrog kev ua haujlwm ntawm cov kuab tshuaj raws li polyurethane.
(4) Thermoplastic polyurethane elastomers tuaj yeem ua rau ntau yam khoom lag luam los ntawm kev ua cov txheej txheem xws li cov yas, uas tuaj yeem ua tiav los ntawm compression molding, txhaj tshuaj molding, extrusion, jade extension thiab tshuab molding. Nrog cov kuab tshuaj, nws tuaj yeem siv los ua cov txheej txheem, thiab nws tseem tuaj yeem ua PU tawv, uas tuaj yeem siv rau hauv cov khaub ncaws, ntim cov ntaub ntawv thiab khau tawv tawv. Ntau cov fillers thiab additives tuaj yeem muab ntxiv thaum lub sijhawm ua haujlwm kom txo tau cov nqi thiab txhim kho qee yam khoom ntawm lub cev, thiab cov tshuaj pleev xim kuj tuaj yeem muab ntxiv kom cov khoom muaj ntau yam xim ci.
(5) Polyurethane tawv Polyurethane tawv feem ntau hu ua PU tawv. PU tawv yog ua los ntawm polyurethane casting kua nplaum, thermoplastic thiab polyurethane dej latex. Polyurethane casting kua nplaum yog siv los ua cov nplaum txheej los yog npuas txheej ntawm PU tawv, thiab polyurethane dej latex thiab polyurethane thermoplastic yog siv los ua txheej txheej ntawm PU tawv. Hauv cov txheej txheem tsim khoom, nws tau muab faib ua cov txheej txheem ntub dej thiab cov txheej txheem qhuav qhuav
Cov txheej txheem: Raws li cov qauv ntawm cov tawv nqaij, nws tau muab faib ua cov nplaum thiab tsis-nplaum, foamed txheej thiab non-foamed txheej; nyob rau hauv daim ntawv thov, nws tau muab faib ua garment tawv, khau tawv tawv thiab industrial tawv.
(6) Polyurethane elastic fiber Polyurethane elastic fiber yog ib qho fiber ntau ua los ntawm kev kos duab thiab spinning nrog tag nrho-thermoplastic polyurethane thermoplastic. Cov fibers elastic no yog siv rau hauv nroog fabrics, thom khwm, thiab lwm yam rau cov neeg hnav, thiab cov khoom siv xim tuaj yeem siv los ua cov khaub ncaws zoo nkauj, ruaj thiab ci ntsa iab.
(7) Polyurethane txheej Polyurethane txheej tseem hu ua polyurethane xim lossis polyurethane enamel. Homogeneous polyurethane txheej tuaj yeem ua los ntawm kev ntxiv cov kuab tshuaj los ntawm polyurethane thermoplastic los yog cov kua nplaum casting. Polyurethane latex yog cov txheej txheem heterogeneous polyurethane. Polyurethane coatings tau muab faib ua ob-txheej polyurethane txheej thiab ib-tiv thaiv polyurethane txheej. Polyurethane txheej yog roj-resistant, hnav-resistant, huab cua-resistant, muaj ruaj adhesion, du nto thiab me me kev sib txhuam coefficient. Cov txheej txheem no yog siv rau saum npoo ntawm cov tsheb thauj mus los niaj hnub, nrog kev sib txhuam tsis tshua muaj zog thiab txuag hluav taws xob. Yog li ntawd, polyurethane coatings yog siv nyob rau hauv txawv teb chaws aircraft, tsheb thiab nkoj.
(8) Muaj ntau hom polyurethane adhesives, polyisocyanate adhesives, polyurethane prepolymer adhesives, ib-tivthaiv polyurethane adhesives, ob-tivthaiv polyurethane adhesives, polyurethane thermoplastics Adhesives, polyurethane kub yaj polyurethane adhesives polyurethane adhesives adhesives, zaj duab xis polyurethane adhesives, strips, tapes, polyurethane rollers thiab bonded polyethylene, Polyurethane nplaum rau polypropylene, thiab lwm yam.
Polyurethane nplaum muaj kev sib txuas zoo ntawm ntau yam ntaub, yas, roj hmab, ntoo, iav thiab cov khoom siv tais diav thiab cov khoom siv cement, thiab nws lub zog tev yog 300-500N / cm (hauv qab kub nias). Cov nplaum urethane yog sib txuas rau cov hlau, txhuas, tooj liab thiab lwm cov ntxaij kub, thiab nws lub zog tev tuaj yeem ncav cuag 300-1000N / cm (thaum kub nias).
(9) Polyurethane ua npuas ncauj roj hmab Polyurethane ua npuas ncauj roj hmab yog tsim los ntawm kev sib xyaw polyurethane compound roj hmab, thermoplastic yas thiab casting roj hmab nrog foaming agent.
Cov roj hmab zoo li no tshwj xeeb tshaj yog elastic, xis nyob thiab zaum, thiab yuav tsis hnov ntxhiab heev rau lub sijhawm ntev, yog li nws tau siv dav hauv cov rooj zaum tsheb kauj vab, rooj zaum tsav tsheb thiab sofas ntawm maus taus, tsheb, dav hlau, nkoj, thiab neeg caij tsheb. rooj.
(10) Polyurethane auxiliary cov ntaub ntawv yog synthesized los ntawm ib-kauj ruam txoj kev, prepolymerization txoj kev thiab semi-prepolymerization txoj kev. Polyurethane casting adhesives nrog cov khoom sib txawv yog ntxiv nrog cov xim sib txawv thiab cov khoom sib txawv, thiab tau muab tso rau hauv av ntawm cov chaw ua si thiab cov tsev so, los yog siv rau cov dej tsis zoo. Cov khoom siv yog cov cuab yeej pabcuam ntsia rau ntawm lub ru tsev, thiab siv los ua cov khoom siv caulking hauv kev tsim kho thiab cov tsheb thauj mus los xws li tsheb thiab tsheb ciav hlau. Hauv kev tsim kho, nws tuaj yeem muab faib ua ib qho thiab ob qho khoom siv rau kev tsim kho.
(11) Polyurethane grouting cov ntaub ntawv Polyurethane prepolymer yog ntxiv nrog cov fillers sib txawv thiab txhaj rau hauv qhov tsim kom ruaj khov hauv av, tiv thaiv seepage, tiv thaiv kom tsis txhob tawm, thiab thaiv dej. Nws tau muab faib ua roj-soluble thiab dej-soluble polyurethane grouting cov ntaub ntawv.
(12) Cov ntaub ntawv kho mob polyurethane.
