xov xwm

Cov zaj duab xis-forming tus neeg sawv cev yog lub ntsiab ntawm iav fiber ntau infiltrant, feem ntau accounting rau 2% mus rau 15% ntawm cov loj feem ntawm cov infiltrant mis, nws lub luag hauj lwm yog los khi cov iav fiber ntau rau hauv bundles, nyob rau hauv zus tau tej cov kev tiv thaiv fibers, thiaj li hais tias cov fiber bundles muaj ib tug zoo degree ntawm nruj, agglomeration, kom tau raws li cov txheej txheem tom ntej. Feem ntau siv cov yeeb yaj kiab tsim hauv cov iav fiber ntau infiltrant formulations yog polymers, xws li epoxy resins, polyurethane, polyester, phenolic resins, hloov polypropylene dispersions, los yog emulsions. Kev ua tau zoo ntawm cov neeg ua yeeb yaj kiab ua yeeb yaj kiab feem ntau yog nyob ntawm cov qauv molecular thiab molecular hnyav ntawm cov polymer. Rau tib zaj duab xis-tsim tus neeg sawv cev, qhov nruj ntawmiav fibertuaj yeem tswj tau los ntawm qhov hnyav molecular ntawm tus neeg ua yeeb yaj kiab tsim, thiab tus neeg sawv cev ua yeeb yaj kiab uas muaj qhov hnyav molecular yuav muaj qhov nruj dua ntawm cov iav fiber ntau, uas tsim nyog rau kev kho deg.reinforcing thermoplastic tws iav fiber ntau cov khoom, thaum tus neeg sawv cev ua yeeb yaj kiab nrog qhov hnyav molecular yog tsim rau kev tsim cov yarns siv hauv winding thiab rub molding. Epoxy resin polymers muaj aliphatic hydroxyl, ether, thiab epoxy pawg, thiab muaj cov tshuaj lom neeg muaj zog ntawm cov pawg polar hauv epoxy film-forming agents, yog li lawv muaj qhov zoo adhesion thiab bundling nyhuv ntawm iav fibers;

Tsis tas li ntawd, pawg epoxy nyob rau hauv epoxy zaj duab xis-tsim tus neeg sawv cev tuaj yeem hnov ​​mob nrog lub davhlau ya nyob twg hydroxyl pawg, terminal carboxyl pawg, terminal amino pawg, thiab lwm pab pawg ua haujlwm hauv engineering plastics xws li PBT, PET, PA, PC, thiab lwm yam. Polyester film-forming agents muaj ntau pawg ester, unsaturated chemical bonds, thiab hydrophilic pawg nyob rau hauv cov saw tseem ceeb, thiab lawv cov kev ua tau zoo nyob ntawm hom kua qaub thiab cawv siv nyob rau hauv synthesis ntawm polyester thiab qhov ratio. Thaum lub hauv paus resin yog unsaturated polyester resin, unsaturated ob daim ntawv cog lus nyob rau hauv polyester zaj duab xis-tsim tus neeg sawv cev yuav polymerize thiab cross-links nrog ob daim ntawv cog lus nyob rau hauv lub hauv paus cob los tsim ib tug muaj zog tshuaj bonds los yog lub cev entanglement, uas txhim kho lub interfacial bonding zog. Polyester zaj duab xis-tsim cov neeg ua haujlwm feem ntau muaj cov ntaub ntub dej zoo thiab nkag mus thiab yog li siv cov khoom ntub dej hauv pultrusion, winding, spraying, chevron, thiab lwm yam khoom. Polyurethane zaj duab xis-forming tus neeg saib xyuas molecular saw muaj cov qauv carbamate rov qab, qhov muaj nyob ntawm cov pawg polar no ua rau cov polyurethane rau iav fiber ntau muaj kev sib khi zoo heev, cov molecular mos thiab tawv ntu ntawm kev sib xyaw ua ke ntawm siab elasticity thiab abrasion tsis kam, tib lub sijhawm, polyurethane nyob rau hauv pawg isocyanate tuaj yeem nkag mus rau hauv cov tshuaj tiv thaiv kev sib txuas ntawm cov amino acids. interfacial bonding, txhim kho kev ua haujlwm ntawmcov ntaub ntawv sib xyawcov khoom.