xov xwm

Tus neeg sawv cev ua yeeb yaj kiab yog qhov tseem ceeb ntawm cov iav fiber infiltrant, feem ntau suav txog 2% txog 15% ntawm cov feem pua ​​​​​​ntawm cov mis infiltrant, nws lub luag haujlwm yog los khi cov iav fiber rau hauv cov pob khoom, hauv kev tsim cov kev tiv thaiv ntawm cov fibers, yog li ntawd cov fiber bundles muaj qib zoo ntawm kev tawv, agglomeration, kom tau raws li cov txheej txheem tom ntej hauv cov khoom iav fiber. Cov neeg sawv cev ua yeeb yaj kiab feem ntau siv hauv cov iav fiber infiltrant formulations yog polymers, suav nrog epoxy resins, polyurethane, polyester, phenolic resins, hloov kho polypropylene dispersions, lossis emulsions. Kev ua tau zoo ntawm cov neeg sawv cev ua yeeb yaj kiab feem ntau nyob ntawm cov qauv molecular thiab qhov hnyav molecular ntawm polymer. Rau tib tus neeg sawv cev ua yeeb yaj kiab, qhov tawv ntawmiav fibertuaj yeem tswj tau los ntawm qhov hnyav molecular ntawm tus neeg sawv cev tsim zaj duab xis, thiab tus neeg sawv cev tsim zaj duab xis nrog qhov hnyav molecular siab yuav muaj qhov tawv dua ntawm cov iav fiber, uas yog qhov tsim nyog rau kev kho qhov chaw ntawmcov khoom siv thermoplastic chopped glass fiber reinforcing, thaum tus neeg sawv cev tsim zaj duab xis nrog qhov hnyav molecular qis dua yog qhov tsim nyog rau kev tsim cov xov paj siv hauv winding thiab rub molding. Epoxy resin polymers muaj aliphatic hydroxyl, ether, thiab epoxy pawg, thiab muaj kev sib txuas tshuaj lom neeg muaj zog ntawm cov pab pawg polar hauv cov neeg sawv cev tsim zaj duab xis epoxy, yog li lawv muaj kev sib txuas zoo thiab cov nyhuv bundling rau cov iav fibers;

Ntxiv rau, pawg epoxy hauv tus neeg sawv cev epoxy zaj duab xis-tsim tuaj yeem cuam tshuam nrog pawg hydroxyl kawg, pawg carboxyl kawg, pawg amino kawg, thiab lwm pawg nquag hauv cov yas engineering xws li PBT, PET, PA, PC, thiab lwm yam, los txhim kho lub zog sib txuas ntawm cov iav fiber thiab cov resin. Cov neeg sawv cev tsim zaj duab xis polyester muaj ntau pawg ester, cov tshuaj sib txuas tsis tau saturated, thiab cov pab pawg hydrophilic hauv cov saw hlau tseem ceeb, thiab lawv cov kev ua tau zoo nyob ntawm hom kua qaub thiab cawv siv hauv kev tsim cov polyester thiab qhov sib piv. Thaum cov resin puag yog cov polyester resin tsis tau saturated, cov ob chav sib txuas tsis tau saturated hauv tus neeg sawv cev tsim zaj duab xis polyester tuaj yeem polymerize thiab hla-txuas nrog cov ob chav sib txuas hauv cov resin puag los tsim cov tshuaj sib txuas muaj zog lossis kev sib koom ua ke, uas txhim kho lub zog sib txuas interfacial. Cov neeg sawv cev tsim zaj duab xis polyester feem ntau muaj cov khoom ntub thiab nkag mus zoo heev thiab yog li ntawd siv ua cov neeg sawv cev ntub hauv pultrusion, winding, txau, chevron, thiab lwm yam khoom. Cov saw hlau molecular ntawm polyurethane zaj duab xis-tsim tus neeg sawv cev muaj cov qauv carbamate rov ua dua, qhov muaj cov pawg polar no ua rau polyurethane rau iav fiber muaj kev sib txuas zoo heev, cov ntu mos thiab tawv molecular ntawm kev sib xyaw ua ke ntawm kev ywj pheej siab thiab kev tiv thaiv kev puas tsuaj, tib lub sijhawm, polyurethane hauv pawg isocyanate tuaj yeem nkag mus nrog tus neeg sawv cev amino coupling thiab matrix resin hauv cov tshuaj tiv thaiv, los txhawb kev sib txuas ntawm interfacial, txhim kho kev ua tau zoo ntawmcov ntaub ntawv sib xyaw ua kecov khoom.