Phau Ntawv Qhia Txog Epoxy Vinyl Ester Resin Uas Siv Tau Hauv Lub Ntiaj Teb Tiag Tiag: Yam Koj Yuav Tsum Paub Tseeb

Hauv lub ntiaj teb composites, kev xaiv cov khoom siv feem ntau yog qhov sib npaug ntawm cov peev nyiaj, lub zog, thiab koj tuaj yeem tig pwm sai npaum li cas. Cov neeg feem coob daig ntawm cov epoxy txheem thiab polyester pheej yig, tsis quav ntsej txog qhov ua haujlwm tiag tiag ntawm kev lag luam:Epoxy Vinyl Ester Resin.

Nws tsis yog ib yam khoom "nruab nrab" xwb. Yog tias koj tab tom tsim ib yam dab tsi uas yuav tsum kav ntev hauv lub ntiaj teb tiag tiag - tsis yog tsuas yog nyob rau ntawm daim ntawv qhia tshwj xeeb - qhov no yog qhov chemistry uas koj yuav tsum tau saib.

1. Vim Li Cas Nws Thiaj Yog "Lub Zog Uas Tsis Muaj Neeg Paub"

Muaj ntau tus neeg ua yuam kevvinyl estertsuas yog rau "polyester txhim kho dua tshiab." Qhov ntawd yog kev nkag siab yuam kev tseem ceeb. Vim tias nws lub hauv paus yog los ntawm epoxy, nws coj kev tawv rau lub rooj. Thaum koj siv nws ntawm lub khw muag khoom, ntawm no yog nws ua li cas tiag tiag:

Tus Kws Tshaj Lij Tiv Thaiv Osmosis:Hauv kev lag luam marine, osmosis (blistering) yog tus neeg tua neeg ntsiag to.Epoxy vinyl ester cov roj hmabyog hydrophobic ntau dua li polyester thiab kho sai dua li epoxycov roj hmabNws tsim ib daim ntaub thaiv uas tuab thiab tsis nkag tau uas tiv taus dej nkag.

Ua rau qaug zog:Nws muaj peev xwm tshwj xeeb los "ua kom cov fiberglass ntub zoo kawg nkaus. Qhov kev sib txuas ruaj khov ntawm cov resin thiab fiber yog qhov sib txawv ntawm ib qho uas tsis ua haujlwm thaum lub sijhawm thauj khoom thiab ib qho uas tuav nws tau ntau xyoo.

Kev Ruaj Ntseg Hauv Kev Lag Luam:Hauv cov kav dej tshuaj lom neeg lossis cov tshuab ntxuav, nws yog qhov siv tau zoo tshaj plaws. Nws tsis yog tsuas yog tiv taus cov kua qaub xwb; nws tseem tswj tau nws cov qauv kom ruaj khov hauv cov chaw uas yuav ua rau cov epoxy tawg yooj yim.

2. Txiav Los Ntawm "Qib" (Dab tsi yog Hype piv rau Qhov Tseeb)

Tsis txhob cia cov lus lag luam zoo li "Super" lossis "Clear" ua rau koj dig muag. Thaum koj tab tom nrhiav khoom, nrhiav cov yam ntxwv ua haujlwm no:

Qib Marine:Tsis txhob tsuas nrhiav cov khoom uas "tsis pub dej nkag." Koj yuav tsum xyuas seb lub nkoj puas tiv taus dej. Yog tias koj tab tom tsim lub nkoj ua haujlwm tau zoo lossis lwm yam khoom uas nyob hauv dej ntev, cov roj hmab yuav tsum tau tsim tshwj xeeb los tiv thaiv kev tawg ntawm cov tshuaj uas ua rau muaj kev sib xyaw ntawm osmotic.

Qib Ntshiab:Qhov no yog qhov tseem ceebepoxy vinyl ester cov roj hmabtshem tawm cov xim thiab cov khoom ntxiv. Nws zoo heev rau kev kho kom zoo nkauj, tab sis ceev faj: nws tsis yog khawv koob. Nws tseem yuav daj thaum raug UV ntau, yog li koj xav tau ib lub tsho tiv thaiv UV-stabilized rau saum yog tias nws mus sab nraum zoov.

Cov Txheej Txheem Uas Muaj Iav Txhawb Nqa:Cov resin tsuas yog ib nrab ntawm qhov kev sib ntaus sib tua xwb. Qhov sib xws ntawm koj cov resin thiab cov iav fiber "sizing" yog qhov uas lub zog tiag tiag los ntawm. Yog tias koj tus neeg muag khoom tsis tuaj yeem qhia koj tias lawv cov resin puas sib xws nrog koj cov ntaub E-iav lossis ntau-axial, koj tab tom thov kom delamination tom qab.

3. Qhov Tseeb Txog Tus Nqi: Tshaj Li Qhov Muaj Daim Ntawv Nplaum

Thaum kuaj xyuas qhovnqe vinyl ester resin, tsis txhob tsuas yog piv cov nyiaj ib kilogram xwb.

Xav txog koj lilub sijhawm hloov pauv. Vinyl ester cov roj hmab kho sai dua thiab ntseeg tau dua li epoxy. Yog tias koj tuaj yeem rub koj cov khoom tawm ntawm pwm sai dua 20%, koj tsuas yog txuag tau nyiaj ntau dua ntawm kev ua haujlwm thiab kev poob nqi pwm dua li koj siv rau tus nqi resin siab dua me ntsis.

Thaum koj hu rau tus neeg muag khoom, tsis txhob quav ntsej txog qhov kev hais lus "Muag" thiab nug peb lo lus nug no:

Cov Ntaub Ntawv Lub Sijhawm Gel:Thaum kuv sib tov cov tshuaj catalyst lawm, yuav siv tau ntev npaum li cas? Yog tias qhov kub thiab txias yog 30°C hauv koj lub khw, koj yuav tsum paub tias koj yuav tsum siv nws ntev npaum li cas.

Cov Qauv Viscosity:Puas yog nws zoo rau kev teeb tsa tes, lossis nws nyias txaus rau kev nqus tsev? Kev yuav qhov viscosity tsis raug yuav ua rau koj lub voj voog infusion puas tsuaj.

Kev rhiab heev ntawm MEKP: Epoxy vinyl estercov roj hmabyog rhiab heev rau qhov zoo ntawm koj cov tshuaj catalyst. Nug lawv cov lus pom zooMEKP(Methyl Ethyl Ketone Peroxide) piv thiab lo rau nws.

4. Phau Ntawv Qhia Txog Kev Ua Haujlwm Hauv Tebchaws rau Kev Tiv Thaiv Kev Ua Tsis Tau Zoo

Kuv tau pom cov khoom puas tsuaj txaus lawm kom paub tias feem ntau nws mus qhov twg tsis raug. Nco ntsoov peb txoj cai no:

Av noo yog tus yeeb ncuab:Txawm hais tias nws zoo heev rau kev siv hauv dej hiav txwv los xij, qhov av noo siab heev (80%+) thaum lub sijhawm kho yuav ua rau koj muaj qhov chaw "tawv". Nws yog qhov mob rau xuab zeb thiab feem ntau txhais tau tias txheej sab saud tsis sib txuas zoo.

Nws Tsis Yog Ib Qho Nplaum Rau Cov Qauv:Ib qho yuam kev uas feem ntau tshwm sim yog kev kho mobvinyl esterzoo li cov kua nplaum epoxy uas muaj ob feem. Nws tsis yog. Nws vam khom styrene cross-linking. Tsis txhob xav tias nws yuav txuas cov qhov sib txawv dav lossis tuav cov pob qij txha uas nqa tau lub nra hnyav ib yam li cov kua nplaum epoxy tshwj xeeb yuav ua.

Kev ua pa tsis yog qhov xaiv tau:Cov ntxhiab tsw ntawm styrene hnyav heev. Tsis tas li ntawd xwb, kev ua pa tsis zoo kuj tseem yuav ua rau lub cev kho tau sai. Ua kom cov pa tawm mus los tau.

Qhov Kev Txiav Txim

Yog tias koj tam sim no daig hauv thaj chaw "Goldilocks" - qhov twg epoxy kim heev thiab qeeb, tab sis polyester tsuas yog tsis muaj zog heev -Epoxy Vinyl Esteryog tib lo lus teb uas muaj logic xwb.

Nws yog qhov sib npaug zoo tshaj plaws ntawm kev ua haujlwm kho tshuab, kev tiv taus cua sov, thiab kev ua haujlwm ntau lawm hauv kev ua lag luam. Thaum koj tau teeb tsa koj cov kev xav tau kev tiv taus cua sov thiab tshuaj lom neeg, koj tsis txhob txhawj txog cov khoom siv puas lawm thiab pib tsom mus rau kev tsim kho.

Koj puas nyob hauv nruab nrab ntawm kev tsim kho thiab ntaus ib qho teeb meem tshwj xeeb nrog koj lub kaw lus resin tam sim no, lossis koj tsuas yog sim qhia meej txog cov khoom siv rau qhov project tshiab?