Fiberglass reinforced yas yog dav siv nyob rau hauv ntau yam ntawm lub teb chaws kev lag luam vim nws yooj yim molding, kev ua tau zoo heev, thiab ntau raw khoom.Tes layup fiberglass thev naus laus zis (tom qab no hu ua tes layup) muaj qhov zoo ntawm kev nqis peev tsawg, lub voj voog luv luv, kev siv hluav taws xob tsawg, thiab tuaj yeem tsim cov khoom nrog cov duab nyuaj, tuav ib qho kev lag luam hauv Suav teb.Txawm li cas los xij, qhov zoo ntawm tes nteg fiberglass cov khoom hauv Suav teb tam sim no tsis zoo, uas rau qee qhov txwv kev nce qib ntawm cov khoom siv tes.Kev lag luam sab hauv tau ua haujlwm ntau los txhim kho qhov zoo ntawm cov khoom.Hauv cov teb chaws txawv teb chaws, cov khoom siv tes nrog cov khoom zoo nyob ze los yog ncav cuag A-theem tuaj yeem siv los ua cov khoom siv sab hauv thiab sab nrauv rau cov tsheb siab.Peb tau nqus cov thev naus laus zis thiab kev paub dhau los ntawm txawv teb chaws, ua ntau qhov kev sim thiab kev txhim kho, thiab ua tiav qee qhov txiaj ntsig hauv qhov no.
Ua ntej, kev soj ntsuam theoretical yog ua los ntawm cov yam ntxwv ntawm kev ua haujlwm ntawm tes thiab cov khoom siv raw.Tus kws sau ntawv ntseeg tias lub ntsiab tseem ceeb cuam tshuam rau qhov zoo ntawm cov khoom yog raws li hauv qab no: ① cov txheej txheem ntawm cov resin;② Cov txheej txheem ntawm gel coat resin;③ Qhov zoo ntawm cov pwm nto.
Resin
Resin account rau kwv yees li 55-80% los ntawm qhov hnyav hauv cov khoom siv tes.Cov khoom sib txawv ntawm cov resin ncaj qha txiav txim siab qhov ua tau zoo ntawm cov khoom.Lub cev muaj zog ntawm resin nyob rau hauv cov txheej txheem ntau lawm txiav txim siab ntau lawm efficiency thiab cov khoom zoo.Yog li ntawd, thaum xaiv resin, cov nram qab no yuav tsum tau xav txog:
Lub viscosity ntawm tes nteg resin feem ntau ntawm 170 thiab 117 cps.Cov resin muaj ntau yam viscosity, uas yog qhov zoo rau kev xaiv.Txawm li cas los xij, vim qhov sib txawv ntawm cov viscosity ntawm qhov txwv sab sauv thiab qis ntawm tib hom ntawm resin yog li ntawm 100cps txog 300cps, kuj tseem yuav muaj kev hloov pauv tseem ceeb hauv viscosity hauv lub caij ntuj no thiab lub caij ntuj sov.Yog li ntawd, kev sim yuav tsum tau soj ntsuam thiab txiav txim siab cov resin uas haum rau viscosity.Cov kab lus no tau ua cov kev sim ntawm tsib resins nrog cov viscosities sib txawv.Thaum lub sij hawm kev sim, qhov kev sib piv tseem ceeb yog ua los ntawm cov resin impregnation ceev ntawm fiberglass, resin foaming kev ua tau zoo, thiab qhov ceev thiab thickness ntawm paste txheej.Los ntawm kev sim, nws tau pom tias qhov qis dua qhov viscosity ntawm cov resin, lub impregnation ceev ntawm fiberglass ceev, qhov ntau dua efficiency, me me porosity ntawm cov khoom, thiab qhov zoo dua cov uniformity ntawm cov khoom thickness.Txawm li cas los xij, thaum qhov kub thiab txias los yog cov tshuaj resin siab me ntsis, nws yooj yim los ua kua nplaum (los yog tswj cov kua nplaum);Ntawm qhov tsis sib xws, qhov ceev ntawm impregnating fiberglass yog qeeb, qhov kev ua tau zoo yog tsawg, cov khoom porosity siab, thiab uniformity ntawm cov khoom thickness tsis zoo, tab sis qhov tshwm sim ntawm cov kua nplaum tswj thiab ntws yog txo.Tom qab ntau qhov kev sim, nws tau pom tias cov resin viscosity yog 200-320 cps ntawm 25 ℃, uas yog qhov zoo tshaj plaws ua ke ntawm cov khoom zoo, qhov zoo ntawm cov khoom, thiab kev ua haujlwm ntawm cov khoom.Hauv kev tsim khoom tiag tiag, nws yog ib qho uas yuav ntsib qhov tshwm sim ntawm cov resin viscosity siab.Nyob rau lub sijhawm no, nws yog ib qho tsim nyog los kho cov viscosity resin kom txo nws mus rau qhov viscosity ntau haum rau kev ua haujlwm.Feem ntau muaj ob txoj hauv kev kom ua tiav qhov no: ① ntxiv styrene rau dilute cov resin kom txo viscosity;② Txhim kho qhov kub thiab txias ntawm ib puag ncig kom txo cov viscosity ntawm cov resin.Kev nce qhov kub thiab txias ntawm cov resin yog ib txoj hauv kev zoo heev thaum qhov kub thiab txias qis.Feem ntau, ob txoj kev feem ntau yog siv los xyuas kom meej tias cov resin tsis khov sai heev.
Lub sijhawm gelation
Lub sij hawm gel ntawm unsaturated polyester resin feem ntau yog 6 ~ 21 min (25 ℃, 1% MEKP, 0 5% cobalt naphthalate).Cov gel yog ceev heev, lub sij hawm ua hauj lwm tsis txaus, cov khoom shrinks zoo heev, lub tshav kub tso tawm yog concentrated, thiab cov pwm thiab cov khoom yog yooj yim rau puas.Cov gel yog qeeb heev, yooj yim ntws, qeeb kho, thiab cov resin yooj yim ua rau cov gel txheej txheej, txo cov khoom siv.
Lub sij hawm gelation muaj feem xyuam rau qhov kub thiab txias thiab tus nqi ntawm tus pib thiab txhawb ntxiv.Thaum qhov kub thiab txias, lub sij hawm gelation yuav luv, uas tuaj yeem txo tus nqi ntawm cov pib thiab cov accelerators ntxiv.Yog tias muaj ntau tus neeg pib thiab cov accelerators ntxiv rau cov resin, cov xim ntawm cov resin yuav darken tom qab kho, los yog vim yog cov tshuaj tiv thaiv sai, cov resin yuav tso cua sov sai sai thiab muaj concentrated heev (tshwj xeeb tshaj yog rau cov khoom tuab tuab), uas yuav kub hnyiab tau. khoom thiab pwm.Yog li ntawd, tes nteg ua haujlwm feem ntau yog ua nyob rau hauv ib qho chaw siab tshaj 15 ℃.Lub sij hawm no, tus nqi pib thiab accelerator tsis xav tau ntau, thiab cov tshuaj tiv thaiv resin (gel, curing) yog qhov ruaj khov, uas tsim nyog rau kev ua haujlwm ntawm tes.
Lub sijhawm gelation ntawm cov resin yog qhov tseem ceeb heev rau kev tsim khoom tiag tiag.Qhov kev sim pom tias lub sij hawm gel ntawm cov resin yog 25 ℃, 1% MEKP thiab 0 Nyob rau hauv cov xwm txheej ntawm 5% cobalt naphthalate, 10-18 feeb yog qhov zoo tshaj plaws.Txawm hais tias qhov chaw ua haujlwm ib puag ncig hloov pauv me ntsis, cov kev xav tau ntau lawm tuaj yeem ua kom ntseeg tau los ntawm kev kho qhov ntau npaum li cas ntawm cov pib thiab cov accelerators.
Lwm yam khoom ntawm resin
(1) Defoaming zog ntawm resin
Lub peev xwm defoaming ntawm resin muaj feem xyuam rau nws cov viscosity thiab cov ntsiab lus ntawm defoaming tus neeg sawv cev.Thaum lub viscosity ntawm cov resin yog tas li, tus nqi ntawm defoamer siv loj txiav txim siab porosity ntawm cov khoom.Nyob rau hauv qhov tseeb ntau lawm, thaum ntxiv accelerant thiab pib rau cov resin, ntau cua yuav sib tov.Yog hais tias cov resin muaj cov khoom tsis zoo defoaming, huab cua hauv resin ua ntej gel tsis tuaj yeem tawm hauv lub sijhawm, yuav tsum muaj npuas ntau hauv cov khoom, thiab qhov tsis muaj qhov sib piv yog siab.Yog li ntawd, cov resin nrog cov khoom zoo defoaming yuav tsum tau siv, uas tuaj yeem txo cov npuas hauv cov khoom thiab txo qhov tsis muaj qhov sib piv.
(2) Xim ntawm resin
Tam sim no, thaum cov khoom siv fiberglass tau siv los ua cov khoom siv sab nrauv zoo nkauj, lawv feem ntau yuav tsum tau coated nrog high-end xim rau saum npoo kom cov khoom nto xim.Txhawm rau kom ntseeg tau qhov sib xws ntawm cov xim xim ntawm cov khoom siv fiberglass, nws yuav tsum tau ua kom lub ntsej muag ntawm cov khoom fiberglass yog dawb los yog lub teeb xim.Yuav kom ua tau raws li qhov yuav tsum tau ua, lub teeb xim xim yuav tsum tau xaiv thaum xaiv cov resin.Los ntawm kev tshuaj ntsuam thwmsim ntawm ib tug loj tus naj npawb ntawm resins, nws tau pom tias cov xim resin nqi (APHA) Φ 84 tuaj yeem daws cov teeb meem xim ntawm cov khoom tom qab kho.Nyob rau tib lub sijhawm, siv lub teeb xim xim ua rau nws yooj yim los kuaj xyuas thiab tso tawm npuas hauv txheej txheej txheej raws sijhawm thaum lub sijhawm pasting;Thiab txo qhov tshwm sim ntawm cov khoom tsis sib xws uas tshwm sim los ntawm kev ua haujlwm yuam kev thaum lub sijhawm pasting, ua rau cov xim tsis sib xws ntawm cov khoom sab hauv.
(3) Cua qhuav
Nyob rau hauv high humidity los yog tsis kub tej yam kev mob, nws yog ib qho yooj yim rau lub puab nto ntawm cov khoom los ua nplaum tom qab solidification.Qhov no yog vim hais tias cov resin nyob rau saum npoo ntawm paste txheej los rau hauv kev sib cuag nrog oxygen, dej vapor, thiab lwm yam polymerization inhibitors nyob rau hauv cov huab cua, ua rau ib tug tsis tiav kho txheej ntawm resin nyob rau hauv lub puab nto ntawm cov khoom.Qhov no cuam tshuam rau kev ua haujlwm tom qab ntawm cov khoom, thiab ntawm qhov tod tes, sab hauv yog yooj yim rau adhering plua plav, uas cuam tshuam rau qhov zoo ntawm sab hauv.Yog li ntawd, thaum xaiv cov resins, yuav tsum tau them nyiaj mloog mus rau xaiv resins nrog huab cua kom qhuav khoom.Rau cov resins uas tsis muaj cua kom qhuav, kev daws ntawm 5% paraffin (melting point 46-48 ℃) thiab styrene feem ntau tuaj yeem muab ntxiv rau cov resin ntawm 18-35 ℃ los daws cov huab cua kom qhuav ntawm cov resin, nrog rau ntau npaum li cas. 6-8% ntawm resin.
gelatin txheej resin
Txhawm rau txhim kho qhov zoo ntawm cov khoom fiberglass, cov xim muaj xim nplua nuj txheej yog feem ntau yuav tsum tau rau ntawm qhov chaw ntawm cov khoom.Gel coat resin yog hom khoom siv no.Gelatin txheej resin txhim kho kev laus tiv thaiv ntawm cov khoom fiberglass thiab muab ib homogeneous nto, txhim kho qhov zoo ntawm cov khoom.Txhawm rau kom muaj qhov zoo ntawm cov khoom, lub thickness ntawm cov nplaum txheej feem ntau yuav tsum yog 0 4-6 hli.Tsis tas li ntawd, cov xim ntawm lub tsho gel yuav tsum yog xim dawb lossis lub teeb, thiab yuav tsum tsis muaj xim sib txawv ntawm cov khoom siv.Tsis tas li ntawd, kev saib xyuas yuav tsum tau them rau kev ua haujlwm ntawm lub tsho gel, nrog rau nws cov viscosity thiab qib.Qhov zoo tshaj plaws viscosity rau gel txheej txau yog 6000cps.Txoj kev yooj yim tshaj plaws los ntsuas qhov qib ntawm cov gel txheej yog txau ib txheej ntawm gel txheej rau ntawm qhov chaw ntawm cov pwm uas tau demolded.Yog hais tias muaj fisheye zoo li shrinkage cov cim ntawm lub gel txheej txheej, nws qhia tau hais tias lub leveling ntawm gel txheej yog tsis zoo.
Cov txheej txheem txij nkawm sib txawv rau cov pwm sib txawv yog raws li hauv qab no:
Cov pwm tshiab lossis pwm uas tsis tau siv ntev:
Lub tsho gel yuav tsum tau nplawm kom huv si ua ntej siv, thiab tom qab ntxiv cov txheej txheem, nws yuav tsum tau nrawm nrawm thiab sib npaug kom ua tiav cov txiaj ntsig zoo tshaj plaws.Thaum txau, yog tias pom muaj viscosity siab dhau lawm, tus nqi tsim nyog ntawm styrene tuaj yeem ntxiv rau dilution;Yog tias nws me dhau, txau nws nyias thiab ob peb zaug ntxiv.Tsis tas li ntawd, cov txheej txheem txau yuav tsum muaj rab phom tsuag kom deb li 2cm ntawm qhov chaw ntawm cov pwm, nrog rau qhov tsim nyog compressed cua siab, cov tshuaj tsuag phom ntxuam nto perpendicular mus rau cov kev taw qhia ntawm rab phom, thiab cov tshuaj tsuag phom ntxuam nto sib tshooj. los ntawm 1/3.Qhov no tuaj yeem tsis tsuas yog daws cov txheej txheem tsis xws luag ntawm gel tsho tiv no nws tus kheej, tab sis kuj xyuas kom meej qhov sib xws ntawm qhov zoo ntawm cov khoom gel txheej txheej.
Kev cuam tshuam ntawm pwm ntawm qhov zoo ntawm cov khoom
Pwm yog cov cuab yeej tseem ceeb rau kev tsim cov khoom siv fiberglass, thiab cov pwm tuaj yeem muab faib ua hom xws li steel, aluminium, cement, roj hmab, paraffin, fiberglass, thiab lwm yam raws li lawv cov ntaub ntawv.Fiberglass pwm tau dhau los ua cov pwm feem ntau siv rau tes layup ntawm fiberglass vim lawv yooj yim molding, muaj cov ntaub ntawv raw, tsis tshua muaj nqi, luv luv voj voog, thiab yooj yim txij nkawm.
Cov txheej txheem saum npoo rau cov pwm fiberglass thiab lwm cov pwm yas yog tib yam, feem ntau ntawm cov pwm yog ib theem siab dua qhov smoothness ntawm cov khoom.Qhov zoo dua ntawm cov pwm, qhov luv ntawm molding thiab tom qab ua tiav lub sij hawm ntawm cov khoom, qhov zoo ntawm qhov zoo ntawm cov khoom, thiab lub neej ntev kev pab cuam ntawm pwm.Tom qab cov pwm xa tuaj rau kev siv, nws yog ib qho tsim nyog los tswj qhov zoo ntawm cov pwm.Kev saib xyuas ntawm cov pwm suav nrog kev tu cov pwm saum npoo, ntxuav cov pwm, kho qhov chaw puas, thiab polishing pwm.Kev tu cov pwm raws sij hawm thiab ua tau zoo ntawm cov pwm yog qhov pib qhov kawg ntawm kev kho pwm, thiab txoj kev kho kom raug ntawm pwm yog qhov tseem ceeb.Cov lus hauv qab no qhia txog kev saib xyuas sib txawv thiab cov txiaj ntsig kev saib xyuas zoo sib xws.
Ua ntej, ntxuav thiab tshuaj xyuas qhov saum npoo ntawm cov pwm, thiab ua qhov tsim nyog kho rau thaj chaw uas cov pwm puas los yog cov txheej txheem tsis tsim nyog.Tom ntej no, ntxuav lub npoo ntawm pwm nrog cov kuab tshuaj, qhuav nws, thiab tom qab ntawd txhuam cov pwm nrog lub tshuab polishing thiab polishing muab tshuaj txhuam ib zaug lossis ob zaug.Ua kom tiav waxing thiab polishing peb zaug sib law liag, tom qab ntawd siv waxing dua, thiab polish dua ua ntej siv.
Pwm siv
Ua ntej, xyuas kom meej tias cov pwm yog waxed thiab polished txhua peb siv.Rau qhov chaw uas muaj kev puas tsuaj thiab tsis yooj yim rau demould, waxing thiab polishing yuav tsum tau ua ua ntej txhua yam siv.Qhov thib ob, rau ib txheej ntawm cov khoom txawv teb chaws (tejzaum nws yog polystyrene lossis siv quav ciab) uas tuaj yeem tshwm sim ntawm cov pwm uas tau siv ntev, nws yuav tsum tau ntxuav kom raws sijhawm.Txoj kev tu yog siv cov ntaub paj rwb dipped hauv acetone los yog cov pwm tshwj xeeb los txhuam (cov tuab tuab tuaj yeem maj mam muab tshem tawm nrog lub cuab yeej), thiab cov khoom ntxuav yuav tsum demolded raws li cov pwm tshiab.
Rau cov pwm puas uas tsis tuaj yeem kho tau raws sijhawm, cov khoom siv xws li cov khoom siv quav ciab uas tuaj yeem ua rau deformation thiab tsis cuam tshuam rau kev kho cov gel lub tsho tuaj yeem siv los sau thiab tiv thaiv thaj tsam puas ntawm pwm ua ntej siv txuas ntxiv.Rau cov uas tuaj yeem kho tau raws sijhawm, thaj chaw puas yuav tsum tau kho ua ntej.Tom qab kho, tsis pub tsawg tshaj 4 tus neeg (ntawm 25 ℃) yuav tsum tau kho.Qhov chaw kho yuav tsum tau polished thiab demolded ua ntej nws tuaj yeem siv tau.Kev saib xyuas ib txwm thiab raug ntawm cov pwm saum npoo txiav txim siab lub neej kev pab cuam ntawm pwm, kev ruaj ntseg ntawm cov khoom nto zoo, thiab kev ruaj ntseg ntawm kev tsim khoom.Yog li ntawd, yuav tsum muaj tus cwj pwm zoo ntawm kev tu pwm.Hauv cov ntsiab lus, los ntawm kev txhim kho cov ntaub ntawv thiab cov txheej txheem thiab txhim kho qhov zoo ntawm cov pwm, qhov zoo ntawm cov khoom siv tes yuav zoo dua.
Post lub sij hawm: Jan-24-2024
