Cov ntaub ntawv sib xyaw yog txhua yam ua ke nrog kev txhawb nqa cov fibers thiab cov khoom siv yas. Lub luag haujlwm ntawm Resin hauv cov khoom siv sib xyaw yog qhov tseem ceeb heev. Qhov kev xaiv ntawm kev txiav txim siab cov cim cov yam ntxwv tsis zoo, thiab cov khoom siv hluav taws xob, cov khoom siv hluav taws xob kuj tseem muaj lub zog tseem ceeb hauv kev nkag siab ntawm cov khoom siv tshuab ntawm cov khoom siv. Thaum lub chaw cob yog xaiv, lub qhov rais uas txiav txim siab cov ntau ntawm cov txheej txheem thiab cov khoom ntawm cov composite tau txiav txim siab. Thermogosetting cob yog ib qho siv Resin hom rau resin matrix sib xyaw vim yog nws qhov kev tsim khoom zoo. Thermoset resins yog yuav luag txhua cov kua lossis ib nrab ntawm chav tsev, thiab lub tswv yim uas ua rau cov monomoplastic resin tshaj li lub thermoplastic resin nyob rau hauv lub xeev kawg. Ua ntej cov khoom siv thermosetting yog kho, lawv tuaj yeem ua tiav rau kev kho cov neeg sawv cev, ua kom sov dua, lawv tsis tuaj yeem hloov pauv mus rau hauv peb-seem hla-txuas-txuas Cov tes taw nruj nrog hnyav dua molecular hnyav.
Muaj ntau ntau yam ntawm thermosetting resins, feem ntau siv yog phenolic resins,Epoxy resins, bis-nees resins, Vinyl resins, Phenolic resins, thiab lwm yam.
(1) Phenolic Resin yog cov khoom siv hluav taws xob thaum ntxov, cov hluav taws xob ua kom zoo dua, thiab cov pa hluav taws zoo, thiab cov pa hluav taws me me, thiab kev sib txuas. Cov roj tso tawm yog tsawg heev lom. Lub txheej txheem yog qhov zoo, thiab cov khoom siv cov khoom siv tuaj yeem tsim los ntawm molding, winding, txhais tes nteg, txau, thiab pultion cov txheej txheem. Coob tus ntawm cov phenolic resin-based composite cov ntaub ntawv yog siv rau hauv cov ntaub ntawv kho kom zoo sab hauv ntawm cov dav hlau.
(2)Epoxy Resinyog thaum ntxov resin matrix siv nyob rau hauv cov dav hlau tsim. Nws yog tus cwj pwm los ntawm ntau cov ntaub ntawv. Cov nqi kho sib txawv thiab cov reeporators tuaj yeem tau kho qhov kub thiab txias los ntawm qhov kub txog 180 ℃; Nws muaj cov khoom siv kho dua; Hom fiber ntau phim; Thaum tshav kub kub thiab vaum tsis kam; kev nruj heev; Zoo heev Kev Nyab Xeeb (Cov kev pab them zoo, nruab nrab Resin viscosity, zoo fluidity, nias bandwidth, thiab lwm yam); Haum rau tag nrho cov-kho moulding ntawm cov khoom loj; Pheej yig. Cov txheej txheem molding zoo thiab kev ua tau zoo ntawm Epoxy Resin ua rau nws nyob ib txoj haujlwm tseem ceeb hauv resin matrix ntawm cov ntaub ntawv tshaj lij.
(3)Vinyl resintau raug lees paub tias yog ib qho ntawm cov resins zoo heev-resistant resins. Nws tuaj yeem tiv taus ntau cov acids, alkalis, ntsev daws teeb meem thiab cov kuab tawm muaj zog. Nws yog dav siv nyob rau hauv papermaking, kev lag luam tshuaj, electronics, kev tiv thaiv roj av, ib puag ncig kev tiv thaiv, nkoj, tsheb tsim teeb pom kev zoo. Nws muaj cov yam ntxwv ntawm unsaturated polyester thiab epoxy cob qhia, yog li nws muaj ob qho txheej txheem ua haujlwm zoo ntawm cov txheej txheem tsis tau muaj tseeb. Ntxiv nrog rau kev ua kom haum corrosion tsis kam, hom kev cob tau no tseem muaj kub ua kom zoo. Nws suav nrog hom qauv, kub hom, nplaim retardant hom, cuam tshuam hom thiab lwm yam ntau yam. Daim ntawv thov ntawm Vinyl Resin hauv Fiber Rein Reinfored Yas (Frp) feem ntau yog raws li kev nteg tes, tshwj xeeb tshaj yog hauv kev siv tshuaj tiv thaiv corrosion. Nrog rau kev txhim kho SMC, nws cov ntawv thov hauv qhov no tseem pom tau.
(4) Hloov kho Bismaleimide Resin (xa mus rau li Bismaleimide Resin) yog tsim kom tau raws li cov kev cai ntawm cov dav hlau tua hluav taws rau composite resin matrix. Cov kev tseev kom muaj xws li muaj: Cov khoom siv loj ntawm 130 ℃ tsim cov khoom siv epoxy, shuangma resin yog feem ntau muaj los ntawm cov cua sov loj thiab kub ua haujlwm thiab kub ua haujlwm kub; Qhov tsis zoo yog tias qhov chaw tsim khoom tsis zoo li epoxy cob, thiab kev kho qhov kub yog siab (kho siab dua 185 ℃), thiab yuav tsum muaj qhov kub ntawm 200 ℃. Lossis rau lub sijhawm ntev ntawm qhov kub siab tshaj 200 ℃.
(5) Cyanide (Qing Diacoustic) Ester Resin muaj Dielectric tas li (0.00 ~ Cov khoom siv neeg kho tshuab thiab ua ke cov khoom, thiab lwm yam, thiab nws muaj cov thev naus laus zis zoo sib xws rau epoxy cob.
Tam sim no Cyanate Resins tsuas yog siv nyob rau hauv peb qho: Cov Ntawv Tshaj Tawm Cov Khoom Siv Hluav Taws Xob Cov Khoom Siv Hluav Taws Xob thiab Kev Ua Haujlwm Siab Tshaj Plaws Cov Khoom Siv rau Aerospace.
Txhawm rau muab nws yooj yim, epoxy cob, kev ua yeeb yam ntawm epoxy cob qhia tsis yog tsuas yog muaj feem xyuam nrog cov qauv molecular. Cov pab pawg glycidyl hauv Epoxy Resin yog qhov hloov pauv tau yooj yim ntawm cov cob qhia thiab txhim kho cov txheej txheem kev ua haujlwm, tab sis tib lub sijhawm txo cov kub ua rau cov tshuaj tua hluav taws. Cov txheej txheem tseem ceeb los txhim kho cov cua sov thiab cov neeg kho mob ntawm cov khoom siv hluav taws epoxy muaj ntau yam kev ua kom qis dua thiab ua kom pom cov qauv nruj. Ntawm chav kawm, kev qhia ntawm tus qauv nruj ua rau txo qis hauv viscanity thiab nce ntxiv hauv viscoxority, uas ua rau muaj kev txo qis hauv epoxy resin txheej txheem kev ua tau zoo. Yuav ua li cas txhim kho qhov kub tsis kam ntawm epoxy cob qhia yog ib qho tseem ceeb heev. Los ntawm qhov pom ntawm cob thiab tus neeg tshuaj xyuas, cov pab pawg ua haujlwm ntau dua, qhov ntau dua cov khaub lig crosslinking ntom ntom ntom. Lub siab dua tg. Kev ua haujlwm tshwj xeeb: Siv ntau hom kev ua haujlwm Epoxy fij lossis tus neeg saib xyuas tus neeg sawv cev, siv siab-huv cov kab mob epoxy resin. Cov txheej txheem feem ntau yog ntxiv rau qee feem kev faib ua feem ntawm o-methyl acetalhyde epoxy cob rau hauv kev kho cov kab ke, uas muaj cov nyhuv zoo thiab tus nqi qis. Qhov loj dua qhov nruab nrab molecular hnyav, qhov nqaim cov molecular hnyav faib, thiab ntau dua qhov tg. Kev ua haujlwm tshwj xeeb: Siv cov khoom siv Epifunctional epoxy fij lossis kho tus neeg sawv cev lossis lwm txoj hauv kev nrog cov khoom hnyav sib xyaw.
Raws li kev ua tau zoo resin matrix siv los ua cov composite matrix, xws li cov khoom siv tshuab, yuav tsum ua kom tau raws li kev xav tau ntawm kev siv. Resin Matrix Chaw tsim tshuaj yog suav nrog Solubility hauv cov kuab tshuaj, xim av) thiab viscosity hloov, thiab lub sijhawm gel hloov nrog kub (txheej txheem qhov rai). Cov muaj pes tsawg leeg ntawm cov qauv txheej txheem cob qhia thiab kev xaiv ntawm kev kub ntxhov txiav txim siab cov khoom siv tshuaj lom neeg (viscosity-kub tiv zaum thermodynamics (exothermic). Cov txheej txheem sib txawv muaj cov sib txawv uas yuav tsum muaj rau resin viscosity. Feem ntau hais lus, rau cov txheej txheem winding, lub resin viscosity feem ntau nyob ib ncig ntawm 500cps; rau cov txheej txheem pultrusion, lub resin viscosity yog ib ncig 800 ~ 1200cps; Rau lub tshuab ua haujlwm pib, lub resin viscosity feem ntau nyob ib ncig ntawm 300CPS, thiab feem ntau, nws yuav tsis pub tshaj 800CPs; Rau cov txheej txheem npaj txhij, lub viscosity yog yuav tsum tau ua kom zoo dua, feem ntau nyob ib ncig ntawm 30000 ~ 50000cps. Tau kawg, cov kev xav tau viscosity muaj feem cuam tshuam nrog cov khoom ntawm cov txheej txheem ntawm cov txheej txheem, khoom siv thiab cov ntaub ntawv lawv tus kheej, thiab tsis zoo li qub. Feem ntau hais lus, raws li qhov kub nce ntxiv, lub piscosity ntawm cov cob muaj tsawg dua hauv qhov kub tsawg; Txawm li cas los xij, raws li qhov kub nce ntxiv, kev kho cov tshuaj tiv thaiv ntawm lub resin tseem muaj txiaj ntsig zoo rau kev kwv yees thaum lub viscosity ntawm ib tug kab viscosity ntawm ib tug resin system nce mus rau a Qee qhov tseem ceeb viscosity taw tes. Piv txwv li, nws yuav siv sijhawm 50 feeb rau lub system resin nrog viscosity ntawm 200cps, tom qab ntawd yuav tsum nce nws thawj zaug hauv viscosity los ntawm tsawg dua 200cps rau 10 ℃ yog txog 25 feeb. Cov kev xaiv ntawm cov txheej txheem tsis yuav tsum txiav txim siab kom paub meej txog cov viscosity thiab gel lub sijhawm. Piv txwv li, hauv cov txheej txheem nqus tsev, nws yog qhov tsim nyog los xyuas kom meej tias cov txheej txheem ntawm qhov kev ua haujlwm tau los ntawm lub resin ntawm qhov kub no yuav tsum tau ntev txaus los xyuas kom meej tias cov cob tuaj yeem xa tuaj. Txhawm rau suav, kev xaiv ntawm cov khoom tsim qauv hauv cov txheej txheem kev txhaj tshuaj yuav tsum xav txog cov gel point, sau lub sijhawm thiab ntsuas kub ntawm cov khoom. Lwm cov txheej txheem muaj qhov xwm txheej zoo sib xws.
Hauv cov txheej txheem moulding, qhov loj me thiab cov duab ntawm ib feem (pwm), hom txheej txheem cuam tshuam txiav txim siab tus txheej txheem cua sov thiab loj hloov cov txheej txheem ntawm cov txheej txheem. Resin kho kom sov li tshav kub, uas yog tsim los ntawm kev tsim cov khoom siv tshuaj lom neeg. Cov kev sib txuas lus ntau dua tsim ib chav ntim ntim ib lub sijhawm, lub zog ntau dua. Cov kub hloov coefficients ntawm cov resins thiab lawv cov polymers feem ntau tsawg. Tus nqi ntawm kev tshem tawm thaum tshav kub lub sijhawm polymerization tsis tuaj yeem phim tus nqi ntawm cov cua sov tiam. Cov nyiaj ntau tshaj plaws ntawm cov cua kub ua rau muaj kev cuam tshuam sai sai, ua rau muaj kev nrawm dua qhov kev ntxhov siab uas yuav ua rau muaj kev ntxhov siab lossis kev ua tsis tau zoo. Qhov no yog qhov tseem ceeb tshaj nyob rau hauv kev tsim cov khoom loj loj, thiab nws yog qhov tshwj xeeb tshaj yog qhov ua kom zoo rau kev kho txoj kev txheej txheem kev kho cov txheej txheem. Qhov teeb meem ntawm kev siv hluav taws xob hauv zos "tshwm sim los ntawm kev kho cov txheej txheem expreg (thiab lub xeev qhov rai sib txawv Cov kev coj ua "kub thiab kub tshwj xeeb (tshwj xeeb tshaj yog nyob rau hauv lub thickness ntawm ib feem), kom ua tiav" kev ua kom kub thiab siv) ntawm qee qhov "kev tsim khoom". Rau cov khoom nyias nyias, txij li ntau npaum li cas ntawm tshav kub yuav dissipated rau ib puag ncig, qhov kub nce maj mam maj mam, thiab qee zaum feem yuav tsis raug siab tag. Nyob rau lub sijhawm no, cov cua sov uas yuav tsum tau siv los ua kom tiav cov kev sib txuas hla kev sib txuas, yog, kev ua cua txias.
Cov khoom siv sib xyaw uas tsis yog tshuaj rau autoclave ua cov thev naus laus zis yog txheeb ze rau cov tsoos autoclave ua tshuab. Dav hlau qhia ntxiv, cov khoom siv sib xyaw ua ke uas tsis siv cov khoom siv autoclave tuaj yeem hu ua cov cuab yeej thev naus laus zis tsis yog kos npe. Cov. Txog tam sim no, daim ntawv thov ntawm cov tshuab tsis yog-autoclave moulding tsuas yog suav nrog cov thev naus laus zis siv tshuab, micrrege kev kho cov roj tov, ntsuas kom sib npaug Cov. Ntawm cov thev naus laus zis, OOA (Outof autoclave) ua kom tiav ntawm cov txheej txheem txheej txheem thiab cov txheej txheem tso cai ntau dua, yog li nws tau pom tias cov ntaub ntawv tsis yog-woven uas yuav muaj qhov tseeb nyob rau lub ntsuas loj. Autoclave txoj kev tsim thev naus laus zis. Ib qho laj thawj tseem ceeb rau kev siv autoclave rau cov kev ua tau zoo ntawm cov khoom yog los muab cov pa hluav taws xob zoo rau kev tsim lub hws, thiab qhov no yog Oauna Prepreg thawj qhov teeb meem tseem ceeb yuav tsum tau tawg. Seb lub porosity ntawm ib feem tuaj yeem tswj tau nyob rau hauv lub tsev kawm ntawv siab thiab nws cov kev ua tau zoo tuaj yeem ncav cuag kev ua haujlwm ntawm OOA zoo thiab cov tshuaj molding.
Kev loj hlob ntawm OOA Prepreg Technology Ua ntej ua ntej los ntawm kev txhim kho ntawm resin. Nws muaj peb lub ntsiab lus tseem ceeb hauv kev txhim kho cov resins rau OOA prepregs: ib qho yog kom tswj tau cov khoom siv hluav taws xob los txo cov tshuaj tiv thaiv kab mob; Qhov thib ob yog txhawm rau txhim kho kev ua tau zoo ntawm cov resins kom ua tiav cov khoom lag luam uas tsim los ntawm cov txheej txheem autoclave, suav nrog cov khoom hluav taws xob ntxiv thiab cov khoom siv tshuab; Qhov thib peb yog kom ntseeg tau tias lub prepreg muaj cov txheej txheem tsim nyog, xws li chav muaj dej nyob sab nraud, thiab lwm yam. Cov khoom lag luam sab nraud Cov khoom tshawb nrhiav thiab kev txhim kho raws li cov qauv tsim qauv thiab cov txheej txheem cov txheej txheem. Cov lus qhia tseem ceeb yuav tsum suav nrog: Txhim kho cov khoom siv neeg kho tshuab, ua kom muaj qhov kub thiab txias, thiab kev txhim kho kev ya raws, thiab kev tiv thaiv cua noo thiab cua sov ua kom tau. Qee qhov kev txhim kho kev ua tau zoo yog kev tsis sib haum xeeb. , xws li siab tawv thiab kev kho kub tsawg. Koj yuav tsum nrhiav qhov sib npaug taw tes thiab xav txog nws kev nkag siab!
Ntxiv nrog rau kev txhim kho kev txhim kho, txoj kev tsim qauv ntawm kev npaj txhij kuj txhawb nqa kev txhim kho ntawm OOA prepreg. Qhov kev tshawb fawb pom qhov tseem ceeb ntawm cov chaw ua haujlwm ua kom muaj zog rau ua xoom tshaj lij laminates. Kev tshawb fawb tom qab tau qhia tias Semi-impregnated expregs tuaj yeem txhim kho cov roj permeability. Ooa Prepregs yog Semi-impregnated nrog resin, thiab cov fibers qhuav yog siv raws li cov channel rau kev tso pa. Cov roj av thiab cov volatiles thiab cov neeg tsis muaj kev cuam tshuam nrog ib feem tuaj yeem tso tawm ntawm cov kev ua pa ntawm ntu ntawd yog qhov porosity ntawm ntu kawg yog <1%.
Lub hnab nqus dej bagging belongs rau qhov tsis-autoclave tsim (OOA) cov txheej txheem. Hauv ntej, nws yog ib qho kev ua yeeb yaj kiab uas ntsaws ruaj ruaj rau cov pwm ntawm cov pwm thiab cov khoom nqus los ntawm kev ua kom cov khoom lag luam kom cov khoom lag luam ntau dua thiab cov khoom siv zoo dua. Cov txheej txheem loj tsim yog
Ua ntej, tso tawm tus neeg sawv cev lossis tso daim ntaub tso tawm rau kev pw ntawm kev tso cov ntawv pwm (lossis daim iav iav). Tus prepreg yog kuaj xyuas raws li tus qauv ntawm cov txheej txheem Prepreg, feem ntau yog suav nrog qhov ntom ntom ntom, cov ntsiab lus cob cov ntsiab lus, cov ntaub ntawv hloov chaw thiab lwm yam ntaub ntawv ntawm cov expreg. Txiav cov expreg rau qhov loj me. Thaum txiav, xyuam xim rau cov kev taw qhia ntawm cov fibers. Feem ntau, cov kev taw qhia kev sib txawv ntawm cov fibers yog yuav tsum tau tsawg dua 1 °. Tus naj npawb ntawm chav tsev pam thiab sau cov lej prepreg. Thaum tso txheej txheej, cov khaubncaws sab nraud povtseg, cov khaubncaws sab nraud povtseg yuav tsum muaj cov ntawv tso cai lossis tso cov ntawv tso ua ke nrog cov kab ke sib txuas, thiab cov pa npuas yuav tsum raug laij raws cov kev taw qhia ntawm cov fibers. Cov scraper kis tawm tawm cov prepreg thiab scrapes nws tawm kom ntau li ntau tau los tshem tawm cov cua ntawm cov khaubncaws sab nraud pov taws. Thaum pw, nws yog qee zaum yuav tsum tau hais cov kev npaj txhij, uas yuav tsum tau muab cov kev coj ua raws li cov kev taw qhia kev sib luag. Nyob rau hauv cov txheej txheem slicting, sib tshooj thiab tsawg dua kev sib tshooj yuav tsum ua tiav, thiab splicing seams ntawm txhua txheej yuav tsum staggered. Feem ntau, cov sib txawv sib txawv ntawm unidirectional exidirectional exidreg yog raws li hauv qab no. 1mm; Cov braided prepreg tsuas yog tso cai rau kev sib tshooj, tsis yog splicing, thiab qhov sib tshooj dav dav yog 10 ~ 15 hli. Tom ntej no, them sai sai rau lub tshuab nqus tsev ua ntej-mastaction, thiab cov tuab tuab ntawm kev nqus tawm ua ntej sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv raws li cov cai sib txawv. Lub hom phiaj yog kom tshem tawm cov huab cua hauv kev nteg thiab cov volatiles hauv kev npaj txhij ua kom paub meej ntawm cov khoom siv hauv sab hauv. Tom qab ntawd muaj kev tso cov ntaub ntawv thiab cov hnab nqus tsev. Hnab sealing thiab kho: qhov kawg yuav tsum tau ua kom tsis muaj cua. Nco tseg: qhov chaw uas muaj huab cua muaj cua sov yog cov sib koom ua ke.
Peb kuj tseem tsimFiberglass ncaj rov qab,Fiberglass Mats, fiberglass mesh, thiabFiberglass Woven Roving.
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Lub Sijhawm Post: Lub Tsib Hlis-23-2022
