UHMW Polyethylene Zaj duab xis muaj qhov ua haujlwm siab tsis zoo, dhau qhov kev puas tsuaj ntawm cov hlau.Ua ke nrog cov tshuaj tiv thaiv dav dav thiab qis coefficient ntawm kev sib txhuam ua rau UHMW yog cov khoom siv hluav taws xob ntau yam khoom siv rau ntau daim ntawv thov kev pabcuam hnyav.Slippery zoo li polymer® Fluoropolymer, tab sis super abrasion & hnav resistant.UHMW Polymers muaj qhov hnyav molecular nruab nrab 10 npaug ntawm cov pa siab ntom ntom polyethylene resins.Qhov hnyav dua molecular muab UHMW Polymers nws qhov tshwj xeeb ua ke ntawm cov yam ntxwv Daim Ntawv Thov: Sab hauv thiab sab nrauv rau cov dej haus, tshuaj, roj thiab hydraulic hoses, hauv qab qhov chaw rau skis thiab snow boards, linings rau chutes kom txo kev sib txhuam thiab hnav.
Kev lag luam skived zaj duab xis ntawm ultra-high molecular-weight polyethylene (UHMWPE) nrog siab uniaxial orientation1 tau kawm thaum lub sij hawm melting thiab crystallisation nrog lub sij hawm daws teeb meem ntawm 30 s txhawm rau txheeb xyuas cov txheej txheem crystallisation.
Nws tau pom tias isotropic crystallisation tshwm sim thaum twg cov yaj yog rhuab mus rau 140◦C lossis siab dua.Oriented crystallisation tshwm sim, yog tias cov yaj yog khaws cia ntawm 138◦C lossis qis dua.Qhov zoo tshaj plaws yaj annealing kub zoo li 136◦C.Nyob rau ntawm qhov kub no, lub semicrystalline nanostructure ntawm thawj zaj duab xis yog erased kiag li, whereas lub orientation nco ntawm yaj yog khaws cia.Ntxiv mus, isothermal crystallisation tsis tuaj yeem pib ntawm qhov kub ntawm 110◦C thiab siab dua.Ntawm qhov kub ntawm 105◦C taw qhia crystallisation pib tom qab 2.5 min.Lamellae nrog maj mam txo cov tuab yog loj hlob thaum lub sij hawm isothermal ntawm 20 min.
Thaum lub sij hawm hauv qab no uas tsis yog-isothermal crystallisation (txias tus nqi: 20◦C / min) me me crystalline blocks nrog rau lwm tus neeg nyob sib ze sib raug zoo.Yog li cov txheej txheem crystallisation zoo ib yam li cov uas pom nrog rau lwm cov ntaub ntawv polyethylene nrog cov saw hlau txaus txaus entanglement ceev tau kawm ua ntej, tshwj tsis yog rau cov undercooling ntau xav tau rau kev pib ntawm isothermal crystallisation.
Kev tshuaj xyuas cov ntaub ntawv hauv qhov chaw tiag tiag los ntawm kev siv ntau qhov CDF tau ua.Thaum lub sij hawm melting ntawm cov khoom, qhov nruab nrab thickness ntawm cov crystalline txheej tseem nyob tas li (27 nm), thaum lub sij hawm ntev yog nce los ntawm 60 nm mus rau 140 nm.Vim hais tias qhov kev tshuaj ntsuam qhia tau hais tias txawm tus thawj nanostructure yog dominated los ntawm tom ntej no-neeg zej zog correlations tsuas yog qhov no txhais tau hais tias lub stability ntawm ib tug lamella yog monotonously nce raws li ib tug muaj nuj nqi ntawm qhov kev ncua deb rau nws cov neeg nyob ze.Thaum cov qauv qub nthuav tawm ntev lamellae, cov recrystallised domains tsis dav dua qhov kev ncua deb ntawm lawv nyob rau hauv fiber ntau s3.
Daim ntawv thov muaj xws li hauv ob sab phlu ntawm conveyor, qhia rails, chute liners, chain guides, tub rau khoom glides thiab txo suab nrov.Zoo heev abrasion thiab hnav tsis kam.
Post lub sij hawm: Jun-17-2017