Nyob rau hauv lub tshav pob zeb ua thiab kho, epoxy resin yog nce siv. Nrog nws zoo heev kev sib raug zoo zog, tsawg curing shrinkage, thiab zoo wettability thiab permeability, nws tau los ua ib tug zoo tagnrho cov ntaub ntawv rau kho pob zeb defects thiab ntxiv dag zog rau pob zeb qauv. Txawm li cas los xij, cov txheej txheem kho ntawm epoxy resin yog qhov nyuaj thiab muaj ntau yam tseem ceeb. Kev tswj hwm ntawm cov xwm txheej no yog qhov tseem ceeb los xyuas kom meej cov nyhuv kho thiab qhov kawg ntawm lub pob zeb. Kab lus no yuav tshawb txog qhov tseem ceeb hauv cov txheej txheem kho ntawm epoxy resin thiab muab cov tswv yim tswj xyuas.
Kev xaiv ntawm epoxy resin thiab curing tus neeg sawv cev
Epoxy cob yog ib qho organic polymer compound uas muaj ob lossis ntau pawg epoxy. Cov pab pawg epoxy hauv nws cov qauv molecular yog qhov muaj zog heev thiab tuaj yeem cuam tshuam kev sib txuas nrog ntau yam tshuaj tua kab mob los tsim cov qauv peb-seem network polymer. Tus neeg sawv cev kho yog cov khoom tseem ceeb uas ua rau cov epoxy resin hloov los ntawm cov kua rau cov khoom. Nws tau txais lub nplhaib-qhib ntxiv cov tshuaj tiv thaiv nrog cov pab pawg epoxy hauv epoxy resin, ua rau muaj kev cuam tshuam ntawm kev sib txuas los tsim ib lub network ntom ntom thiab ruaj khov.
Thaum xaiv epoxy resin thiab curing tus neeg sawv cev, cov yam ntxwv ntawm lub pob zeb thiab daim ntawv thov ib puag ncig yuav tsum tau xav txog. Piv txwv li, rau daim ntawv thov scenarios uas yuav tsum tau kho sai, kho cov neeg ua hauj lwm nrog ceev cov tshuaj tiv thaiv, xws li aliphatic polyamines, yuav xaiv tau; rau cov ntaub ntawv pob zeb uas yuav tsum tau muaj kev kub ntxhov, muaj ntxhiab polyamines lossis anhydride curing agents tuaj yeem xaiv. Tsis tas li ntawd, tus nqi ntawm tus neeg sawv cev curing yuav tsum tau tswj kom meej. Ntau dhau los yog tsawg dhau yuav cuam tshuam rau kev kho mob thiab kev ua haujlwm kawg. Feem ntau hais lus, tus nqi kho tus neeg sawv cev yuav tsum tau txiav txim siab raws li epoxy sib npaug ntawm epoxy resin thiab cov nquag hydrogen sib npaug ntawm tus neeg sawv cev kho kom ntseeg tau tias ob qho tib si tuaj yeem ua rau tag nrho.
Tswj qhov kub thiab txias
Curing kub yog ib qho tseem ceeb ntawm cov txheej txheem kho ntawm epoxy resin. Cov tshuaj tua kab sib txawv yog tsim rau ntau qhov kub thiab txias, xws li cov tshuaj tua kab mob uas muaj qhov kub thiab txias hauv chav tsev kub, cov tshuaj tua hluav taws kub hauv chav tsev kub txog 50 ° C, nruab nrab-kub curing agents nrog kub curing ntawm 50 ° C mus rau 100 ° C, thiab high-temperature curing agents saum toj no 10 ° C.
Siab dhau los yog qis dhau qhov kub yuav muaj qhov cuam tshuam tsis zoo rau kev kho kom zoo. Qhov kub thiab txias heev tuaj yeem ua rau cov tshuaj tiv thaiv ntxov ntxov ntawm epoxy resin thiab tus neeg sawv cev kho, ua kom lub lauj kaub lub neej ntawm qhov sib tov, thiab ua kom lub zog noj; Thaum qhov kub thiab txias heev yuav ua rau cov tshuaj tiv thaiv kab mob qeeb qeeb, ncua lub sijhawm kho, thiab tej zaum yuav ua rau kho tsis tiav.
Nyob rau hauv kev siv tswv yim, qhov tsim nyog curing kub yuav tsum tau txiav txim raws li hom curing neeg sawv cev xaiv thiab kev tsim kho ib puag ncig ntawm lub pob zeb. Piv txwv li, thaum tsim kho nyob rau hauv ib puag ncig uas tsis muaj kub nyob rau lub caij ntuj no, cov khoom siv cua sov yuav siv tau los preheat lub pob zeb thiab epoxy resin sib tov los ua kom cov tshuaj tiv thaiv kab mob; Thaum nyob rau hauv qhov kub thiab txias nyob rau hauv lub caij ntuj sov, yuav tsum tau saib xyuas kom tsis txhob ncaj qha tshav ntuj thiab kub kub qhov chaw los tiv thaiv ntxov ntxov curing ntawm epoxy resin.
Qhov sib tov sib xyaw thiab sib xyaw ua ke
Qhov sib tov ntawm epoxy resin thiab curing tus neeg sawv cev yuav tsum nruj me ntsis proportioned raws li qhov yuav tsum tau ntawm cov khoom siv phau ntawv. Kev sib xyaw tsis zoo yuav ua rau kev kho tsis tiav lossis kev ua haujlwm tsis zoo tom qab kho. Piv txwv li, tus neeg saib xyuas ntau dhau yuav ua rau kho cov epoxy resin nkig thiab tawv, thaum tus neeg saib xyuas tsis txaus yuav ua rau kev kho tsis tiav thiab cuam tshuam rau lub zog sib txuas. Hauv kev ua haujlwm tiag tiag, cov cuab yeej ntsuas tau meej, xws li cov ntsuas hluav taws xob, tuaj yeem siv los xyuas kom meej qhov tseeb ntawm qhov sib xyaw.
Kev sib xyaw ua ke kuj tseem yog qhov tseem ceeb cuam tshuam rau kev kho cov nyhuv. Kev sib xyaw tsis sib xws yuav ua rau tsis txaus cov tshuaj tiv thaiv ntawm epoxy resin thiab curing tus neeg sawv cev, tsim cov cheeb tsam ntawm kev kho tsis tiav hauv zos, yog li cuam tshuam rau kev sib raug zoo thiab kev ua haujlwm tag nrho ntawm pob zeb. Thaum lub sij hawm sib tov, cov khoom siv sib xyaw tsim nyog, xws li lub tshuab hluav taws xob siab ceev, yuav tsum tau siv los xyuas kom meej tias cov epoxy resin thiab curing agent tuaj yeem sib xyaw ua ke. Nyob rau tib lub sijhawm, lub sijhawm sib tov yuav tsum tau tswj nyob rau hauv ib qho kev tsim nyog. Lub sij hawm sib tov luv luv tsis tuaj yeem ua kom sib tov sib xyaw, thaum lub sij hawm sib tov ntev dhau lawm yuav ua rau cov khoom sib tov kho ntxov ntxov.
Tswj cov av noo ib puag ncig
Environmental humidity kuj muaj qee yam cuam tshuam rau cov txheej txheem kho ntawm epoxy resin. Cov av noo ntau dhau yuav ua rau epoxy resin nqus dej noo hauv huab cua, cuam tshuam rau kev kho cov tshuaj tiv thaiv, thiab tseem tuaj yeem ua npuas lossis tawg ntawm qhov chaw kho epoxy resin. Yog li ntawd, thaum tsim kho nyob rau hauv ib tug high humidity ib puag ncig, tsim nyog yuav tsum tau coj mus rau hauv tus account kom txo tau cov av noo ib puag ncig, xws li siv dehumidification khoom los yog teem vents nyob rau hauv qhov chaw tsim kho kom paub meej tias epoxy resin tuaj yeem kho ib txwm.
Pretreatment ntawm pob zeb nto
Kev huv thiab roughness ntawm pob zeb nto muaj ib qho tseem ceeb cuam tshuam rau kev sib koom ua ke ntawm epoxy resin. Ua ntej siv cov kua nplaum, lub pob zeb saum npoo yuav tsum tau muab ntxuav kom huv si kom tshem tawm cov plua plav, roj, siv quav ciab thiab lwm yam impurities ntawm qhov chaw kom ntseeg tau tias cov epoxy resin tuaj yeem tiv taus thiab sib txuas nrog lub pob zeb nto. Nyob rau tib lub sijhawm, qhov tsim nyog roughness tuaj yeem ua rau thaj chaw sib txuas ntawm epoxy resin thiab pob zeb thiab txhim kho lub zog sib txuas. Lub pob zeb nto tuaj yeem kho ua ntej los ntawm kev sib tsoo, sandblasting thiab lwm txoj hauv kev kom nws cov roughness.
Tswj lub sijhawm curing
Lub sijhawm kho yog hais txog lub sijhawm xav tau rau epoxy resin kom kho tau zoo txij thaum pib sib tov. Qhov ntev ntawm lub sijhawm kho yog nyob ntawm yam xws li hom epoxy resin, hom curing agent thiab curing tej yam kev mob. Hauv kev siv tswv yim, lub sijhawm kho kom tsim nyog yuav tsum tau txiav txim siab raws li kev tsim kho thiab siv ib puag ncig ntawm lub pob zeb. Piv txwv li, rau cov pob zeb uas yuav tsum tau muab tso rau hauv kev siv sai, ib qho epoxy resin system nrog lub sij hawm luv luv tuaj yeem xaiv tau; thiab rau qee lub pob zeb uas xav tau kev sib txuas ntau dua, lub sijhawm kho tuaj yeem txuas ntxiv kom tsim nyog kom ntseeg tau tias cov epoxy resin tuaj yeem kho tau tag nrho.
Thaum lub sij hawm kho, qhov curing degree ntawm epoxy resin yuav tsum tau kuaj xyuas tsis tu ncua, uas tuaj yeem raug txiav txim los ntawm kev soj ntsuam nws cov xim hloov, hardness hloov thiab seb nws puas tuaj yeem tiv taus qee yam sab nraud. Thaum cov epoxy resin kho tau zoo, tom qab sib tsoo, polishing thiab lwm yam txheej txheem tuaj yeem nqa tawm.
Tsim nyog siv cov additives
Txhawm rau txhim kho kev ua haujlwm ntawm epoxy resin, qee cov khoom ntxiv xws li plasticizers, diluents, fillers, thiab lwm yam yog qee zaum ntxiv rau epoxy resin. Plasticizers tuaj yeem txhim kho qhov yooj yim ntawm epoxy resin thiab txo nws cov brittleness tom qab kho, tab sis cov yas ntau dhau yuav cuam tshuam rau lub zog sib txuas ntawm epoxy resin. Diluents tuaj yeem txo cov viscosity ntawm epoxy resin thiab txhim kho nws cov wettability thiab permeability, tab sis tus nqi kuj yuav tsum tau tswj kom tsis txhob cuam tshuam cov nyhuv curing. Fillers tuaj yeem txhim kho cov khoom ntim ntawm epoxy resin thiab txo cov nqi, tab sis ntau cov muab tub lim yuav txo qhov kev sib txuas ntawm lub zog thiab tawv ntawm epoxy resin.
Thaum siv cov khoom siv ntxiv, hom thiab tus nqi ntawm cov khoom ntxiv yuav tsum raug xaiv raws li hom epoxy resin thiab daim ntawv thov ntawm pob zeb. Nyob rau tib lub sij hawm, qhov kev txiav txim ntawm kev ntxiv additives thiab cov kev sib tov yuav tsum tau muab sau tseg kom paub meej tias cov additives yuav sib npaug zos rau cov epoxy resin.
Kev tshuaj xyuas thiab kev soj ntsuam zoo
Thaum lub sij hawm kho cov txheej txheem ntawm epoxy resin, yuav tsum tau tsim ib qho kev soj ntsuam zoo thiab kev soj ntsuam xyuas kom ntseeg tau tias cov nyhuv curing thiab qhov kawg ntawm lub pob zeb. Qee cov cuab yeej kuaj thiab cov txheej txheem, xws li kev ntsuas lub zog tensile, ntsuas lub zog shear, kuaj hardness, thiab lwm yam, tuaj yeem siv los ntsuas qhov ua tau zoo ntawm cov epoxy resin kho. Nyob rau tib lub sijhawm, txhua qhov txuas hauv cov txheej txheem kev tsim kho yuav tsum tau saib xyuas, xws li kev sib xyaw ua ke, kev kho qhov kub thiab txias, lub sijhawm kho, thiab lwm yam, kom pom sai thiab kho cov teeb meem tshwm sim.
Xaus
Daim ntawv thov ntawm epoxy resin hauv pob zeb ua thiab kho muaj kev cia siab dav, tab sis nws txoj kev kho yog nyuaj thiab muaj ntau yam tseem ceeb. Los ntawm kev xaiv ntawm epoxy resin thiab curing tus neeg saib xyuas, kev tswj ntawm qhov kub thiab txias, kev tswj kev sib tov sib xyaw thiab kev sib xyaw ua ke, kev hloov ntawm ib puag ncig cov av noo, pretreatment ntawm pob zeb nto, kev txiav txim siab ntawm lub sij hawm curing, tsim nyog siv additives, thiab kev tswj nruj heev ntawm kev soj ntsuam zoo thiab kev saib xyuas, cov nyhuv curing ntawm epoxy resin tuaj yeem ua tau zoo thiab ua haujlwm zoo kawg. durability ntawm pob zeb engineering.
Hauv kev siv cov tswv yim, cov tswv yim tswj ntawm cov ntsiab lus tseem ceeb saum toj no yuav tsum tau hloov pauv raws li hom pob zeb tshwj xeeb thiab ib puag ncig kev tsim kho kom ua tiav cov txiaj ntsig zoo tshaj plaws.