Dab tsi ntawm cov fibers feem ntau yog siv rau hauv polymer mortar?

Ntxiv fibers rau polymer mortar los txhim kho cov kev ua tau zoo ntawm mortar tau dhau los ua ib txoj hauv kev thiab ua tau. Feem ntau siv fibers yog raws li nram no

Alkali-resistant fiberglass?

Cov iav fiber ntau yog tsim los ntawm melting silicon dioxide, oxides uas muaj txhuas, calcium, boron thiab lwm yam khoom, thiab ib tug me me ntawm kev pab xws li sodium oxide thiab poov tshuaj oxide rau hauv iav pob, thiab ces melting thiab kos cov iav pob nyob rau hauv lub crucible. Txhua txoj xov uas rub los ntawm lub crucible yog hu ua monofilament, thiab tag nrho cov monofilaments kos los ntawm lub crucible yog sib sau ua ke rau hauv cov xov paj raw (tow) tom qab dhau los ntawm lub tank soaking. Tom qab tus cab raug txiav, nws tuaj yeem siv rau hauv polymer mortar.

Cov yam ntxwv ntawm cov iav fiber ntau yog lub zog siab, tsis tshua muaj modulus, siab elongation, qis linear expansion coefficient, thiab thermal conductivity tsawg. Lub zog tensile ntawm iav fiber ntau tshaj lub zog ntawm ntau yam ntaub ntawv hlau (1010-1815 MPa).

Velen fiber ntau?

Lub ntsiab tivthaiv ntawm vinyl yog polyvinyl cawv, tab sis vinyl cawv tsis ruaj khov. Feem ntau, vinyl cawv acetate (vinyl acetate) nrog kev ua haujlwm ruaj khov yog siv los ua monomer rau polymerize, thiab tom qab ntawd cov txiaj ntsig polyvinyl acetate yog alcoholylated kom tau polyvinyl cawv. Tom qab cov silk yog kho nrog formaldehyde, cov dej kub resistant vinylon tuaj yeem tau. Lub melting kub (225-230C) ntawm polyvinyl cawv yog siab tshaj qhov decomposition kub (200-220C), yog li nws yog spun los ntawm kev daws spinning.

Vinylon muaj zog hygroscopicity thiab yog hygroscopic ntau yam ntawm cov hluavtaws fibers, uas yog ze rau paj rwb (8%). Vinylon yog me ntsis muaj zog dua paj rwb thiab muaj zog ntau dua li ntaub plaub. Corrosion kuj thiab lub teeb tsis kam: insoluble nyob rau hauv cov organic acids, alcohols, esters thiab roj av teeb solvents, tsis yooj yim rau pwm, thiab lub zog poob tsis loj thaum raug tshav ntuj. Qhov tsis zoo yog tias cov dej kub ua haujlwm tsis zoo txaus thiab elasticity tsis zoo.

Acrylic fiber ntau?

Nws yog hais txog cov hluavtaws fiber ntau uas ua los ntawm kev ntub dej los yog qhuav spinning nrog ntau tshaj 85% ntawm cov copolymer ntawm acrylonitrile thiab cov monomers thib ob thiab thib peb.

Acrylic fiber ntau muaj lub teeb pom kev zoo thiab huab cua tsis kam, uas yog qhov zoo tshaj plaws ntawm cov khoom siv fiber ntau. Thaum acrylic fiber raug tshav ntuj rau ib xyoos, nws lub zog tsuas yog txo los ntawm 20%. Acrylic fiber ntau muaj cov tshuaj lom neeg ruaj khov, acid tsis kam, tsis muaj zog alkali tsis kam, oxidation tsis kam thiab organic hnyav kuj. Txawm li cas los xij, acrylic fibers yuav tig daj hauv lye, thiab macromolecules yuav tawg. Lub quasi-crystalline qauv ntawm acrylic fiber ua rau cov fiber ntau thermoelastic. Tsis tas li ntawd, acrylic fiber muaj cov cua kub zoo, tsis muaj pwm, thiab tsis ntshai kab, tab sis muaj kev hnav tsis zoo thiab tsis zoo ntawm qhov ntev.

Polypropylene fibers?

Polyolefin fiber ntau ua los ntawm stereoregular isotactic polypropylene polymer los ntawm yaj spinning. Cov txheeb ze ntom ntom yog qhov tsawg tshaj plaws ntawm cov hluavtaws fibers, lub zog qhuav thiab ntub dej sib npaug, thiab cov tshuaj tiv thaiv corrosion yog qhov zoo. Tab sis lub hnub laus yog pluag. Thaum cov polypropylene mesh fiber ntau muab tso rau hauv lub mortar, thaum lub sij hawm sib tov ntawm cov mortar, transverse kev twb kev txuas ntawm fiber ntau monofilaments raug rhuav tshem los ntawm kev sib txhuam thiab kev sib txhuam ntawm lub mortar nws tus kheej, thiab cov fiber ntau monofilament lossis network qauv tau qhib tag nrho, yog li Raws li kom paub qhov muaj nuj nqis Cov nyhuv ntawm ntau polypropylene fibers sib npaug sib xyaw rau hauv pob zeb.

Nylon fiber ntau?

Polyamide, feem ntau hu ua nylon, yog ib lo lus dav dav rau cov thermoplastic resins uas muaj cov pab pawg amide rov ua dua—[NHCO] — ntawm cov saw hlau loj.

Nylon muaj zog txhua yam, siab softening point, kub tsis kam, tsis tshua muaj kev sib txhuam coefficient, hnav tsis kam, nws tus kheej lubrication, poob siab absorbing thiab suab nrov txo, roj kuj, tsis muaj zog acid kuj, alkali tsis kam thiab cov kuab tshuaj, zoo hluav taws xob rwb thaiv tsev, muaj nws tus kheej- extinguishing, non-toxic, odorless, huab cua tsis zoo, tsis zoo dyeing. Qhov tsis zoo yog tias nws muaj qhov nqus dej siab, uas cuam tshuam rau qhov ruaj khov thiab cov khoom hluav taws xob. Fiber reinforcement tuaj yeem txo qhov nqus dej ntawm cov resin, kom nws tuaj yeem ua haujlwm nyob rau hauv qhov kub thiab txias. Nylon muaj kev sib raug zoo nrog cov iav fibers.

Polyethylene fiber ntau?

Polyolefin fibers spun los ntawm linear polyethylene (high-density polyethylene) los ntawm yaj spinning. Cov yam ntxwv ntawm cov cuab yeej yog:

(1) Fiber zog thiab elongation yog ze rau cov polypropylene;

(2) Lub peev xwm nqus dej noo zoo ib yam li cov polypropylene, thiab cov dej noo rov qab yog xoom nyob rau hauv cov huab cua puag;

(3) Nws muaj cov tshuaj lom neeg ruaj khov, tshuaj lom neeg zoo thiab corrosion kuj;

(4) Lub tshav kub tsis kam yog qhov tsis zoo, tab sis cov cua sov thiab cov av noo kuj zoo dua, nws cov ntsiab lus melting yog 110-120 ° C, uas yog qis dua lwm cov fibers, thiab qhov tsis kam ntawm melting qhov yog qhov tsis zoo;

(5) Nws muaj hluav taws xob rwb thaiv tsev zoo. Lub teeb ua haujlwm tsis zoo, thiab nws yooj yim rau hnub nyoog nyob rau hauv irradiation ntawm lub teeb.

Aramid fiber ntau?

Cov saw tseem ceeb ntawm cov khoom siv polymer macromolecule yog tsim los ntawm cov nplhaib uas muaj ntxhiab thiab cov ntawv cog lus amide, thiab tsawg kawg 85% ntawm cov pab pawg amide yog sib txuas ncaj qha rau cov nplhaib uas muaj ntxhiab; cov nitrogen atoms thiab carbonyl pawg nyob rau hauv cov amide pawg ntawm txhua lub rov qab unit yog ncaj qha mus rau lub aromatic rings Cov polymer uas carbon atoms txuas thiab hloov ib qho ntawm hydrogen atoms hu ua aramid resin, thiab cov fibers spun los ntawm nws yog collectively hu ua. aramid fibers.

Aramid fiber ntau muaj cov khoom zoo heev thiab muaj zog xws li lub zog tensile siab, siab tensile modulus, tsis tshua muaj siab, zoo zog nqus thiab poob siab, hnav tsis kam, cuam tshuam tsis kam, qaug zog, thiab qhov ntev stability. Cov tshuaj tiv thaiv corrosion, siab kub ua hauj, tsis tshua muaj expansion, tsis tshua muaj thermal conductivity, tsis-combustible, tsis-melting thiab lwm yam zoo thermal zog thiab zoo heev dielectric zog.

ntoo fiber?

Ntoo fiber yog hais txog cov ntaub so ntswg uas muaj lignified thickened cell phab ntsa thiab fiber ntau nrog zoo tawg zoo li pits, thiab yog ib qho tseem ceeb ntawm xylem.

Ntoo fiber ntau yog cov fiber ntau uas absorbs dej thiab yog insoluble hauv dej. Nws muaj zoo heev yooj thiab dispersibility.