Aramid ntawv feem ntau yog npaj los ntawm kev sib xyaw cov aramid precipitated fibers thiab aramid luv fibers rau daim ntawv.

Tshwj xeeb, piv txwv li, cov txheej txheem hauv qab no tuaj yeem siv tau: tom qab kev sib xyaw qhuav ntawm cov lus hais saum toj no aramid precipitated fibers thiab aramid luv fibers, aramid precipitated fibers thiab aramid luv fibers yog dispersed thiab tov nyob rau hauv ib tug kua nruab nrab siv ib tug airflow txoj kev, thiab ces. tso tawm mus rau lub cev ua kua dej permeable (xws li mesh lossis siv) los ua ib daim ntawv, thiab txoj kev tshem tawm cov kua thiab ziab yog nyiam dua. Txoj kev hu ua ntub dej tsim, uas siv dej ua qhov nruab nrab, yog qhov nyiam.

Kev tsim cov txheej txheem ntawm aramid ntawv

Cov txheej txheem molding ntawm aramid fibers:

Polymerization: Hauv thawj theem, aramid fibers yog spun rau hauv ntom, nplua-grained polymer hmoov. Cov khoom no muaj lub ntsiab thermal thiab tshuaj lom neeg ntawm para aramid fibers. Txawm li cas los xij, nws tsis muaj cov khoom ntxiv dag zog ntawm cov xov paj lossis pulp. Cov hmoov zoo no tuaj yeem siv los txhim kho cov khoom ntawm cov khoom yas.

Spinning: Nyob rau theem thib ob ntawm aramid fibers, cov polymer yog yaj hauv sulfuric acid los tsim cov kua siv lead ua kua. Tom qab ntawd, cov tshuaj tau spun rau hauv zoo filaments, txhua tus nrog ib txoj kab uas hla ntawm 12 μ M. Cov qauv ntawm cov lo lo ntxhuav yog 100% subcrystalline, nrog molecular chains thaum uas tig mus rau fiber axis. Qhov kev faib tawm siab no muab Twaron filament ntau yam zoo heev.

Short fiber: Artificial luv fiber lossis luv txiav fiber ntau, uas yog ua tiav los ntawm wrinkling cov xov paj thiab tom qab ntawd kho nrog tus neeg sawv cev tiav. Tom qab ziab, txiav cov fibers rau hauv lub hom phiaj ntev thiab mam li ntim lawv.

Spinning rau hauv pulp: Txhawm rau tsim cov paj ntoo, aramid fibers ua ntej txiav cov xov paj thiab tom qab ntawd muab tshem tawm hauv dej rau kev kho mob fibrosis. Tom qab ntawd nws yog ncaj qha ntim thiab muag raws li cov ntaub ntub dej, los yog lub cev qhuav dej thiab qhuav li qhuav pulp rau muag.