xov xwm

1. Lub zog tensile
Lub zog tensile yog qhov siab tshaj plaws uas cov khoom siv tuaj yeem tiv taus ua ntej ncab. Qee cov khoom siv uas tsis tawg yooj yim deform ua ntej tawg, tab sisKevlar® (aramid) cov fibers, cov carbon fibers, thiab E-glass fibers tsis yooj yim tawg thiab tawg nrog me ntsis deformation. Lub zog tensile yog ntsuas raws li lub zog ib chav tsev (Pa lossis Pascals).

2. Qhov Ceev thiab Lub Zog-rau-Qhov Hnyav Piv
Thaum piv rau qhov ceev ntawm peb cov ntaub ntawv, qhov sib txawv tseem ceeb hauv peb cov fibers tuaj yeem pom. Yog tias peb cov qauv ntawm tib qhov loj me thiab qhov hnyav tau ua, nws sai sai pom tseeb tias Kevlar® fibers sib dua, nrog rau cov carbon fibers ze rau qhov thib ob thiabE-iav fibersqhov hnyav tshaj plaws.

3. Cov Qauv Hluas
Young's modulus yog ib qho kev ntsuas ntawm qhov tawv ntawm cov khoom siv elastic thiab yog ib txoj hauv kev piav qhia txog cov khoom siv. Nws yog txhais tias yog qhov sib piv ntawm uniaxial (hauv ib qho kev taw qhia) kev ntxhov siab rau uniaxial strain (deformation hauv tib qho kev taw qhia). Young's modulus = kev ntxhov siab / kev ntxhov siab, uas txhais tau tias cov khoom siv nrog Young's modulus siab dua li cov uas muaj Young's modulus qis.
Qhov tawv ntawm cov carbon fiber, Kevlar®, thiab cov iav fiber sib txawv heev. Cov carbon fiber yog li ob npaug ntawm cov aramid fibers thiab tsib npaug ntawm cov iav fibers. Qhov tsis zoo ntawm cov carbon fiber qhov tawv zoo heev yog tias nws feem ntau yuav tawg yooj yim dua. Thaum nws tsis ua haujlwm, nws feem ntau tsis qhia txog kev ntxhov siab lossis kev hloov pauv ntau.

4. Kev kub hnyiab thiab kev puas tsuaj thermal
Ob qho Kevlar® thiab carbon fiber yeej tiv taus kub heev, thiab ob qho tsis muaj qhov melting point. Ob qho tib si tau siv rau hauv cov khaub ncaws tiv thaiv thiab cov ntaub tiv taus hluav taws. Fiberglass thaum kawg yuav yaj, tab sis kuj tiv taus kub heev. Tau kawg, cov iav fibers frosted siv hauv cov tsev kuj tuaj yeem ua rau hluav taws kub ntxiv.
Cov roj carbon fiber thiab Kevlar® yog siv los ua cov ntaub thaiv hluav taws lossis cov pam vuam lossis khaub ncaws. Cov hnab looj tes kevlar feem ntau siv rau hauv kev lag luam nqaij los tiv thaiv tes thaum siv riam. Vim tias cov fibers tsis tshua siv lawv tus kheej, qhov tiv taus cua sov ntawm lub matrix (feem ntau yog epoxy) kuj tseem ceeb. Thaum cua sov, epoxy resin mos sai sai.

5. Kev Ua Hluav Taws Xob
Cov roj carbon fiber ua hluav taws xob, tab sis Kevlar® thiabfiberglasstsis txhob ua li ntawd. Kevlar® siv rau rub cov xov hlau hauv cov pej thuam xa xov. Txawm hais tias nws tsis coj hluav taws xob los xij, nws nqus dej thiab dej coj hluav taws xob. Yog li ntawd, yuav tsum muaj ib txheej tiv dej rau Kevlar hauv cov ntawv thov zoo li no.

6. Kev puas tsuaj ntawm UV
Cov fibers Aramidyuav lwj hauv tshav ntuj thiab qhov chaw muaj UV siab. Cov roj carbon lossis iav fibers tsis rhiab heev rau UV hluav taws xob. Txawm li cas los xij, qee cov matrices xws li epoxy resins khaws cia rau hauv tshav ntuj qhov twg nws yuav dawb thiab poob zog. Polyester thiab vinyl ester resins tiv taus UV ntau dua, tab sis qaug zog dua li epoxy resins.

7. Kev qaug zog tsis kam
Yog tias ib feem raug khoov thiab ncaj tas li, thaum kawg nws yuav ua tsis tiav vim qaug zog.Cov roj carbon fibernws yooj yim rau kev qaug zog thiab feem ntau yuav puas tsuaj loj heev, thaum Kevlar® tiv taus kev qaug zog ntau dua. Fiberglass nyob qhov twg nyob nruab nrab.

8. Kev tiv thaiv kev sib txhuam
Kevlar® tiv taus kev txhuam heev, ua rau nws nyuaj rau txiav, thiab ib qho ntawm kev siv Kevlar® feem ntau yog siv ua hnab looj tes tiv thaiv rau thaj chaw uas tes yuav raug txiav los ntawm iav lossis qhov chaw siv cov hniav ntse. Cov carbon thiab cov iav fibers tsis tshua muaj zog.

9. Kev tiv thaiv tshuaj lom neeg
Cov fibers Aramidyog cov uas rhiab heev rau cov kua qaub, cov hauv paus thiab qee cov neeg ua haujlwm oxidizing (piv txwv li, sodium hypochlorite), uas tuaj yeem ua rau cov fiber puas tsuaj. Cov tshuaj chlorine bleach (piv txwv li Clorox®) thiab hydrogen peroxide tsis tuaj yeem siv nrog Kevlar®. Cov tshuaj oxygen bleach (piv txwv li sodium perborate) tuaj yeem siv yam tsis ua rau cov aramid fibers puas tsuaj.

10. Cov khoom sib txuas ntawm lub cev
Yuav kom cov carbon fibers, Kevlar® thiab iav ua haujlwm tau zoo tshaj plaws, lawv yuav tsum tau tuav rau hauv qhov chaw hauv lub matrix (feem ntau yog epoxy resin). Yog li ntawd, lub peev xwm ntawm epoxy los txuas rau ntau yam fibers yog qhov tseem ceeb heev.
Ob qho tib si carbon thiabcov iav fibertuaj yeem yooj yim lo rau epoxy, tab sis qhov kev sib txuas ntawm aramid fiber-epoxy tsis muaj zog li qhov xav tau, thiab qhov kev sib txuas tsawg no ua rau dej nkag mus. Yog li ntawd, qhov yooj yim uas aramid fibers tuaj yeem nqus dej, ua ke nrog qhov kev sib txuas tsis zoo rau epoxy, txhais tau tias yog tias qhov chaw ntawm kevlar® composite puas tsuaj thiab dej tuaj yeem nkag mus, ces Kevlar® tuaj yeem nqus dej raws cov fibers thiab ua rau lub composite tsis muaj zog.

11. Xim thiab xov
Aramid yog xim kub dawb hauv nws lub xeev ntuj, nws tuaj yeem muaj xim thiab tam sim no muaj ntau yam xim zoo nkauj. Fiberglass kuj muaj ntau yam xim.Cov roj carbon fiberyeej ib txwm dub thiab tuaj yeem sib xyaw nrog cov xim aramid, tab sis nws tsis tuaj yeem muaj xim rau nws tus kheej.