Vim li cas cov hmoov iav fiber ua rau cov khoom siv tawv dua?

Iav Fiber Hmoovtsis yog tsuas yog cov khoom sau xwb; nws txhawb nqa los ntawm kev sib txuas ntawm lub cev ntawm qib micro. Tom qab yaj thiab extrusion ntawm qhov kub siab thiab tom qab ntawd sib tsoo ntawm qhov kub qis, alkali-free (E-iav) iav fiber hmoov tseem tswj tau qhov sib piv siab thiab tsis muaj zog ntawm qhov chaw. Nws muaj cov npoo tawv, tab sis lawv tsis tshua muaj zog thiab lawv tsim cov network ntawm kev txhawb nqa hauv cov resin lossis cement lossis mortar matrices. Qhov faib tawm ntawm 150 mesh txog 400 mesh muab kev lag luam ntawm kev sib kis yooj yim thiab lub zog anchoring, ntxhib dhau yuav ua rau kev sib haum xeeb thiab zoo dhau yuav ua rau lub nra hnyav tsis muaj zog. Cov ntawv thov uas zoo dua rau cov txheej txheem siab-gloss lossis precision potting yog cov qib ultra-fine, xws li 1250 iav fiber hmoov.

Qhov kev txhim kho tseem ceeb ntawm cov khoom siv tawv thiab kev tiv thaiv kev hnav los ntawm cov hmoov iav yog los ntawm nws cov khoom siv physicochemical thiab micro-mechanisms hauv cov khoom siv. Qhov kev txhawb nqa no tshwm sim feem ntau los ntawm ob txoj hauv kev: "kev txhawb nqa lub cev" thiab "kev txhim kho kev sib txuas ntawm interface," nrog rau cov hauv paus ntsiab lus tshwj xeeb hauv qab no:

Kev Ua Kom Lub Cev Puv Nkaus Los Ntawm Kev Nyuaj Siab Intrinsic

Cov hmoov iav feem ntau muaj cov tshuaj inorganic xws li silica thiab borates. Tom qab kub siab yaj thiab txias, nws tsim cov khoom amorphous nrog Mohs hardness ntawm 6-7, ntau dua li cov ntaub ntawv hauv paus xws li plastics, resins, thiab cov txheej txheem ib txwm muaj (feem ntau 2-4). Thaum sib xyaw ua ke hauv lub matrix,hmoov iavmuab ntau yam "micro-hard particles" tso rau hauv cov khoom siv:

Cov ntsiab lus tawv no ncaj qha dais lub zog sab nraud thiab kev sib txhuam, txo kev ntxhov siab thiab kev hnav ntawm cov khoom siv hauv paus nws tus kheej, ua haujlwm ua "pob txha uas tiv taus kev hnav";

Qhov muaj cov ntsiab lus tawv tiv thaiv kev hloov pauv yas ntawm qhov chaw ntawm cov khoom. Thaum ib yam khoom sab nraud khawb hla qhov chaw, cov hmoov iav tiv taus kev khawb, yog li ua kom tag nrho qhov nyuaj thiab kev tiv taus khawb.

Cov Qauv Uas Nthuav Dav Txo Cov Kev Hnav

Cov hmoov iav muaj qhov loj me me (feem ntau yog micrometer mus rau nanometer scale) thiab kev sib kis zoo heev, sib npaug zos sau cov qhov me me hauv cov khoom matrix los tsim cov qauv sib xyaw ua ke:

Thaum lub sijhawm yaj lossis kho, cov hmoov iav ua ib theem txuas ntxiv nrog lub matrix, tshem tawm cov qhov sib txawv ntawm qhov sib txuas thiab txo cov kev hnav hauv zos uas tshwm sim los ntawm kev ntxhov siab. Qhov no ua rau cov khoom siv nto zoo sib xws thiab tiv taus kev hnav.

Kev sib txuas ntawm cov khoom sib txuas ua rau kev hloov pauv ntawm cov khoom thauj zoo dua

Cov hmoov iav muaj kev sib raug zoo heev nrog cov khoom siv matrix xws li cov resins thiab plastics. Qee cov hmoov iav hloov kho qhov chaw tuaj yeem sib txuas nrog lub matrix, tsim cov kev sib txuas ruaj khov.

Kev ruaj khov tshuaj tiv taus kev xeb ib puag ncig

Hmoov iavqhia txog kev ua haujlwm zoo heev ntawm cov tshuaj lom neeg, tiv taus cov kua qaub, alkalis, oxidation, thiab kev laus. Nws tswj tau qhov ua tau zoo ruaj khov hauv cov chaw nyuaj (piv txwv li, sab nraum zoov, chaw tshuaj lom neeg):

Tiv thaiv kev puas tsuaj ntawm cov qauv ntawm qhov chaw los ntawm kev xeb tshuaj, khaws cia qhov nyuaj thiab kev hnav tsis kam;

Tshwj xeeb tshaj yog nyob rau hauv coatings thiab inks, iav hmoov lub UV tsis kam thiab tsis kam rau noo noo-kub laus qeeb matrix degradation, ntev cov khoom siv hnav lub neej.