Los ntawm Lawrence (Larry) Van Iseghem yog Thawj Tswj Hwm/CEO ntawm Van Technologies, Inc.
Thaum peb ua lag luam nrog cov neeg siv khoom lag luam thoob ntiaj teb, peb tau teb ntau cov lus nug thiab tau muab ntau cov kev daws teeb meem ntsig txog cov txheej txheem UV-curable. Cov hauv qab no yog qee cov lus nug uas nquag nug, thiab cov lus teb nrog yuav muab kev nkag siab zoo.
1. Cov txheej txheem UV-curable yog dab tsi?
Hauv kev lag luam ntoo tiav, muaj peb hom tshuaj pleev xim UV-curable tseem ceeb.
100% nquag (qee zaum hu ua 100% khoom khov) UV-kho tau coatings yog cov kua tshuaj sib xyaw uas tsis muaj cov kuab tshuaj lossis dej. Thaum siv, lub txheej tam sim ntawd raug rau lub zog UV yam tsis tas yuav qhuav lossis ua kom qhuav. Cov txheej txheem txheej uas siv los ua cov tshuaj tiv thaiv los tsim cov txheej txheem khov kho los ntawm cov txheej txheem reactive piav qhia thiab hu ua photopolymerization. Vim tias tsis tas yuav ua kom qhuav ua ntej kho, cov txheej txheem thov thiab kho tau zoo heev thiab pheej yig.
Cov txheej txheej UV-curable uas muaj dej los yog cov kuab tshuaj muaj tseeb tias muaj dej los yog cov kuab tshuaj kom txo cov khoom siv (lossis cov khoom khov). Qhov kev txo qis ntawm cov khoom khov no ua rau yooj yim dua los tswj cov tuab ntawm cov zaj duab xis ntub, thiab/lossis tswj cov viscosity ntawm cov txheej txheej. Thaum siv, cov txheej txheej UV no tau siv rau ntawm cov ntoo los ntawm ntau txoj kev thiab yuav tsum tau ziab kom qhuav ua ntej kho UV.
Cov hmoov txheej uas kho tau los ntawm UV kuj yog 100% cov khoom sib xyaw ua ke thiab feem ntau yog siv rau cov khoom siv hluav taws xob los ntawm kev rub hluav taws xob electrostatic. Thaum siv lawm, cov khoom siv raug cua sov kom yaj cov hmoov, uas ntws tawm los ua ib daim zaj duab xis saum npoo. Cov khoom siv uas tau pleev xim lawm ces tuaj yeem raug rau lub zog UV tam sim ntawd kom pab kho tau. Cov zaj duab xis saum npoo uas tshwm sim los ntawm qhov kub tsis yooj yim hloov pauv lossis rhiab heev lawm.
Muaj ntau hom txheej txheej uas kho tau los ntawm UV uas muaj cov txheej txheem kho thib ob (ua kom sov, ua kom noo noo, thiab lwm yam) uas tuaj yeem kho tau rau thaj chaw uas tsis raug lub zog UV. Cov txheej txheej no feem ntau hu ua txheej txheej kho ob npaug.
Txawm yog hom tshuaj pleev xim UV twg los xij, qhov kawg ntawm qhov chaw lossis txheej no muab cov khoom zoo, ruaj khov thiab tiv taus zoo heev.
2. Cov tshuaj pleev xim UV uas kho tau zoo npaum li cas rau ntau hom ntoo, suav nrog cov ntoo uas muaj roj?
Cov txheej pleev xim uas kho tau los ntawm UV muaj qhov nplaum zoo heev rau feem ntau hom ntoo. Nws yog ib qho tseem ceeb kom paub tseeb tias muaj cov xwm txheej kho kom zoo txaus los ntawm kev kho thiab lo rau lub substrate.
Muaj tej hom ntoo uas ntuj tsim muaj roj ntau heev thiab tej zaum yuav xav tau siv cov tshuaj primer uas txhawb kev lo rau, lossis "tiecoat." Van Technologies tau ua kev tshawb fawb thiab kev txhim kho ntau yam rau kev lo rau cov txheej txheem UV-curable rau cov ntoo no. Cov kev txhim kho tsis ntev los no suav nrog ib qho tshuaj sealant UV-curable uas tiv thaiv cov roj, kua txiv hmab txiv ntoo thiab suab thaj kom tsis txhob cuam tshuam rau kev lo rau saum txheej UV-curable.
Los yog, cov roj uas nyob rau ntawm qhov chaw ntoo tuaj yeem tshem tawm ua ntej siv cov tshuaj pleev xim los ntawm kev so nrog acetone lossis lwm yam tshuaj uas tsim nyog. Ib daim ntaub uas tsis muaj plaub mos mos, uas nqus tau dej yuav raug ntub nrog cov tshuaj pleev xim ua ntej thiab tom qab ntawd so rau ntawm qhov chaw ntawm ntoo. Cia kom qhov chaw qhuav thiab tom qab ntawd tuaj yeem siv cov tshuaj pleev xim UV-curable. Kev tshem tawm cov roj ntawm qhov chaw thiab lwm yam khoom qias neeg ua rau cov tshuaj pleev xim lo rau ntawm qhov chaw ntoo.
3. Cov xim twg zoo sib xws nrog cov tshuaj pleev xim UV?
Cov xim pleev uas piav qhia ntawm no tuaj yeem kaw tau zoo thiab pleev rau saum nrog 100% UV-kho tau, txo cov kuab tshuaj UV-kho tau, dej-UV-kho tau, lossis UV-kho tau hmoov. Yog li ntawd, muaj ntau yam kev sib xyaw ua ke ua rau feem ntau ntawm txhua yam xim pleev hauv khw tsim nyog rau txhua yam txheej UV-kho tau. Txawm li cas los xij, muaj qee qhov kev txiav txim siab uas tseem ceeb kom paub tseeb tias muaj kev sib xws rau qhov tiav ntoo zoo.
Cov xim pleev dej thiab cov xim pleev dej uas kho tau los ntawm UV:Thaum siv cov tshuaj pleev xim/txhuam xim uas kho tau 100% UV, cov tshuaj uas txo cov kuab tshuaj UV lossis cov tshuaj uas kho tau UV rau saum cov xim uas ntws los ntawm dej, nws yog ib qho tseem ceeb uas cov xim yuav tsum qhuav tag kom tiv thaiv cov teeb meem ntawm qhov sib xws ntawm cov xim, suav nrog cov tawv txiv kab ntxwv, qhov muag ntses, qhov tawg, dej ntws thiab dej ntws. Cov teeb meem no tshwm sim vim yog qhov kev nruj ntawm qhov chaw ntawm cov xim uas siv piv rau qhov kev nruj ntawm qhov chaw ntawm cov xim uas siv.
Txawm li cas los xij, kev siv cov txheej txheem dej-UV-kho tau feem ntau zam txim ntau dua. Cov xim pleev rau hauv yuav pom tias muaj dej noo yam tsis muaj teeb meem thaum siv qee cov tshuaj sealant/topcoats uas dej-UV-kho tau. Cov dej noo lossis dej seem los ntawm kev siv cov xim pleev yuav yooj yim kis mus rau hauv cov tshuaj sealant/topcoat uas dej-UV siv thaum lub sijhawm ziab. Txawm li cas los xij, nws raug qhia kom sim cov xim pleev thiab cov tshuaj sealant/topcoat ua ke ntawm cov qauv kuaj ua ntej cog lus rau ntawm qhov chaw tiag tiag kom tiav.
Cov xim pleev uas muaj roj thiab cov xim pleev uas muaj kuab lom:Txawm hais tias yuav muaj ib lub tshuab uas siv tau rau cov xim uas tsis qhuav txaus uas muaj roj lossis cov kuab tshuaj, feem ntau nws yog qhov tsim nyog, thiab pom zoo kom ziab cov xim no kom qhuav tag ua ntej siv cov tshuaj sealer/topcoat. Cov xim qhuav qeeb ntawm cov hom no yuav siv sijhawm txog li 24 txog 48 teev (lossis ntev dua) kom qhuav tag. Dua li no, kev sim lub tshuab ntawm qhov chaw ntoo zoo yog qhov pom zoo.
100% Cov xim pleev uas kho tau los ntawm UV:Feem ntau, cov txheej txheem UV-kho tau 100% qhia tau tias muaj tshuaj lom neeg thiab dej tsis kam thaum kho tag nrho. Qhov kev tiv thaiv no ua rau nws nyuaj rau cov txheej txheem tom qab siv kom lo zoo tshwj tsis yog tias qhov chaw kho UV-kho tau raug txhuam kom txaus kom tso cai rau kev sib txuas. Txawm hais tias 100% UV-kho tau cov xim pleev uas tau tsim los kom txais tau cov txheej txheem tom qab siv tau muab, feem ntau 100% UV-kho tau cov xim pleev yuav tsum tau txhuam lossis kho ib nrab (hu ua "B" theem lossis kho pob) kom txhawb kev sib txuas ntawm intercoat. "B" staging ua rau muaj cov chaw tiv thaiv seem hauv cov txheej xim uas yuav sib xyaw nrog cov txheej UV-kho tau siv thaum nws raug rau cov xwm txheej kho tag nrho. "B" staging kuj tso cai rau kev txhuam me me kom txiav lossis txiav cov noob ntoo uas yuav tshwm sim los ntawm kev siv xim pleev. Kev sib khi du lossis kev siv topcoat yuav ua rau muaj kev sib txuas zoo heev intercoat.
Lwm qhov kev txhawj xeeb nrog 100% UV-kho tau cov xim yog hais txog cov xim tsaus dua. Cov xim muaj xim ntau (thiab cov xim pleev xim feem ntau) ua tau zoo dua thaum siv cov teeb UV uas xa lub zog ze rau lub teeb pom kev zoo. Cov teeb UV ib txwm muaj doped nrog gallium ua ke nrog cov teeb mercury txheem yog qhov kev xaiv zoo heev. Cov teeb UV LED uas tso tawm 395 nm thiab / lossis 405 nm ua tau zoo dua nrog cov kab ke pigmented piv rau 365 nm thiab 385 nm arrays. Ntxiv mus, cov kab ke teeb UV uas xa lub zog UV ntau dua (mW / cm2.2) thiab lub zog ceev (mJ/cm2)2) txhawb kev kho kom zoo dua los ntawm cov xim pleev lossis cov txheej xim pleev.
Thaum kawg, ib yam li lwm cov txheej txheem pleev xim uas tau hais los saum toj no, kev sim yog qhov qhia ua ntej ua haujlwm nrog qhov chaw tiag tiag uas yuav pleev xim thiab ua tiav. Nco ntsoov ua ntej kho!
4. Zaj duab xis tsim kom muaj 100% UV coatings yog dab tsi?
Cov tshuaj pleev hmoov uas kho tau los ntawm UV yog cov tshuaj pleev uas kho tau los ntawm UV 100%, thiab lawv qhov tuab uas siv yog txwv los ntawm cov zog electrostatic uas khi cov hmoov rau ntawm qhov chaw uas ua tiav. Nws yog qhov zoo tshaj plaws los nrhiav kev qhia ntawm cov chaw tsim tshuaj pleev hmoov UV.
Hais txog cov kua 100% UV-curable coatings, qhov tuab ntawm cov zaj duab xis ntub uas siv yuav ua rau kwv yees li tib yam tuab ntawm cov zaj duab xis qhuav tom qab UV kho. Qee qhov shrinkage yog qhov tsis zam tab sis feem ntau nws tsis muaj qhov tshwm sim tsawg heev. Txawm li cas los xij, muaj cov ntawv thov kev siv tshuab siab heev uas qhia txog qhov kam rau siab ntawm cov zaj duab xis nruj heev lossis nqaim. Hauv cov xwm txheej no, kev ntsuas cov zaj duab xis kho ncaj qha tuaj yeem ua tiav los sib piv cov tuab ntawm cov zaj duab xis ntub rau cov zaj duab xis qhuav.
Qhov tuab kho kawg uas tuaj yeem ua tiav yuav nyob ntawm seb cov tshuaj lom neeg ntawm cov txheej UV-curable thiab nws tau tsim li cas. Muaj cov tshuab muaj uas tau tsim los muab cov zaj duab xis nyias nyias ntawm 0.2 mil - 0.5 mil (5µ - 15µ) thiab lwm yam uas tuaj yeem muab qhov tuab ntau dua 0.5 nti (12 hli). Feem ntau, cov txheej UV-cured uas muaj qhov ceev ntawm qhov sib txuas siab, xws li qee cov qauv urethane acrylate, tsis muaj peev xwm ua kom cov zaj duab xis tuab hauv ib txheej siv. Qhov degree ntawm shrinkage thaum kho yuav ua rau muaj kev tawg loj ntawm cov txheej tuab siv. Kev tsim kho siab lossis qhov tuab tiav tseem tuaj yeem ua tiav siv cov txheej UV-curable ntawm qhov ceev ntawm qhov sib txuas siab los ntawm kev siv ntau txheej nyias thiab xuab zeb thiab / lossis "B" staging ntawm txhua txheej los txhawb kev sib txuas intercoat.
Lub tshuab kho kom zoo ntawm feem ntau cov txheej txheem UV-kho tau hu ua "free radical pib." Lub tshuab kho kom zoo no yooj yim rau cov pa oxygen hauv huab cua uas ua rau qeeb lossis tiv thaiv qhov ceev ntawm kev kho. Qhov qeeb no feem ntau hu ua kev txwv tsis pub siv oxygen thiab yog qhov tseem ceeb tshaj plaws thaum sim ua kom cov zaj duab xis nyias heev. Hauv cov zaj duab xis nyias, thaj chaw ntawm tag nrho cov txheej txheem thov yog siab dua thaum piv rau cov zaj duab xis tuab. Yog li ntawd, cov zaj duab xis nyias nyias yooj yim dua rau kev txwv tsis pub siv oxygen thiab kho qeeb heev. Feem ntau, qhov chaw ntawm qhov tiav tseem kho tsis txaus thiab ua rau muaj kev xav oily / greasy. Txhawm rau tiv thaiv kev txwv tsis pub siv oxygen, cov pa roj inert xws li nitrogen thiab carbon dioxide tuaj yeem hla dhau qhov chaw thaum kho kom tshem tawm cov concentration ntawm oxygen, yog li tso cai rau kev kho tag nrho, sai.
5. Lub txheej UV pob tshab puas meej npaum li cas?
Cov txheej txheem UV-curable 100% tuaj yeem ua kom pom tseeb zoo heev thiab yuav sib tw nrog cov txheej txheem zoo tshaj plaws hauv kev lag luam. Tsis tas li ntawd, thaum siv rau ntoo, lawv coj tawm qhov zoo nkauj tshaj plaws thiab qhov tob ntawm daim duab. Qhov tshwj xeeb tshaj yog ntau yam aliphatic urethane acrylate systems uas pom tseeb thiab tsis muaj xim thaum siv rau ntau qhov chaw, suav nrog ntoo. Tsis tas li ntawd, aliphatic polyurethane acrylate coatings ruaj khov heev thiab tiv taus kev hloov pauv nrog hnub nyoog. Nws yog ib qho tseem ceeb uas yuav tsum taw qhia tias cov txheej txheem qis-gloss scatter lub teeb ntau dua li cov txheej txheem gloss thiab yuav muaj qhov pom tseeb qis dua. Piv rau lwm cov tshuaj pleev xim, txawm li cas los xij, 100% UV-curable coatings yog sib npaug yog tias tsis zoo dua.
Cov txheej pleev xim uas siv dej los kho tau UV uas muaj nyob rau lub sijhawm no tuaj yeem tsim los muab qhov meej meej, sov ntoo thiab teb rau qhov sib tw nrog cov txheej txheem tiav zoo tshaj plaws. Qhov meej, ci ntsa iab, teb rau ntoo thiab lwm yam khoom siv ntawm cov txheej pleev xim UV uas muaj nyob hauv khw niaj hnub no zoo heev thaum nrhiav tau los ntawm cov chaw tsim khoom zoo.
6. Puas muaj cov xim lossis cov xim pleev xim UV uas kho tau?
Yog lawm, cov xim lossis cov xim pleev xim muaj nyob rau hauv txhua hom UV-curable coatings tab sis muaj cov yam tseem ceeb uas yuav tsum xav txog rau qhov zoo tshaj plaws. Qhov tseem ceeb tshaj plaws thiab thawj qhov tseem ceeb tshaj plaws yog qhov tseeb tias qee cov xim cuam tshuam rau lub peev xwm ntawm UV lub zog los xa mus rau hauv, lossis nkag mus, cov txheej UV-curable coating. Lub electromagnetic spectrum tau piav qhia hauv Duab 1, thiab nws tuaj yeem pom tias lub teeb pom kev spectrum yog nyob ib sab ntawm UV spectrum. Lub spectrum yog ib qho continuum tsis muaj kab meej (wavelengths) ntawm demarcation. Yog li ntawd, ib cheeb tsam maj mam sib xyaw rau hauv ib cheeb tsam nyob ib sab. Xav txog thaj tsam pom kev, muaj qee qhov kev thov txog kev tshawb fawb tias nws nthuav dav los ntawm 400 nm txog 780 nm, thaum lwm cov lus thov hais tias nws nthuav dav los ntawm 350 nm txog 800 nm. Rau qhov kev sib tham no, nws tsuas yog qhov tseem ceeb uas peb paub tias qee cov xim tuaj yeem thaiv kev xa mus ntawm qee qhov wavelengths ntawm UV lossis hluav taws xob.
Vim tias qhov kev tsom mus rau qhov UV wavelength lossis thaj chaw hluav taws xob, cia peb tshawb nrhiav thaj chaw ntawd kom ntxaws ntxiv. Daim Duab 2 qhia txog kev sib raug zoo ntawm qhov wavelength ntawm lub teeb pom kev thiab cov xim sib xws uas zoo rau kev thaiv nws. Nws tseem ceeb heev kom paub tias cov xim feem ntau npog ntau qhov wavelengths xws li cov xim liab tuaj yeem npog ntau qhov ntau uas nws tuaj yeem nqus tau rau hauv thaj chaw UVA. Yog li ntawd, cov xim uas txhawj xeeb tshaj plaws yuav npog ntau qhov daj - txiv kab ntxwv - liab thiab cov xim no tuaj yeem cuam tshuam rau kev kho kom zoo.
Tsis yog tsuas yog cov xim cuam tshuam rau kev kho UV xwb, tab sis lawv kuj yog qhov yuav tsum tau xav txog thaum siv cov xim dawb, xws li cov xim pleev UV-curable thiab cov xim pleev topcoat. Xav txog qhov absorbance spectrum ntawm cov xim dawb titanium dioxide (TiO2), raws li pom hauv Duab 3. TiO2 qhia txog kev nqus tau zoo heev thoob plaws thaj tsam UV thiab tseem, cov xim dawb, UV-curable tau kho tau zoo. Yuav ua li cas? Cov lus teb nyob rau hauv kev tsim cov tshuaj pleev kom zoo los ntawm tus tsim cov txheej thiab cov chaw tsim khoom ua ke nrog kev siv cov teeb UV kom raug rau kev kho. Cov teeb UV ib txwm muaj, uas siv hauv kev siv tso tawm lub zog raws li pom hauv Duab 4.
Txhua lub teeb uas tau piav qhia yog ua los ntawm mercury, tab sis los ntawm kev ntxiv mercury nrog lwm yam hlau, qhov kev tso tawm tuaj yeem hloov mus rau lwm thaj chaw wavelength. Hauv cov ntaub ntawv ntawm TiO2-based, dawb, UV-curable coatings, lub zog xa los ntawm lub teeb mercury txheem yuav raug thaiv zoo. Qee qhov wavelengths siab dua xa tuaj yeem muab kev kho tab sis lub sijhawm ntev uas xav tau rau kev kho tag nrho yuav tsis ua tau. Los ntawm kev ntxiv gallium rau lub teeb mercury, txawm li cas los xij, muaj ntau lub zog uas muaj txiaj ntsig zoo hauv thaj chaw uas tsis tau thaiv zoo los ntawm TiO2. Siv kev sib xyaw ntawm ob hom teeb, ob qho tib si los ntawm kev kho (siv gallium doped) thiab kev kho saum npoo (siv mercury txheem) tuaj yeem ua tiav (Duab 5).
Thaum kawg, cov xim lossis cov xim UV-curable coatings yuav tsum tau tsim los ntawm kev siv cov photoinitiators zoo tshaj plaws kom lub zog UV - qhov pom kev ntawm lub teeb uas xa los ntawm lub teeb - raug siv kom zoo rau kev kho kom zoo.
Muaj Lus Nug Ntxiv?
Yog muaj lus nug dab tsi tshwm sim, tsis txhob yig nug tus neeg muab khoom tam sim no lossis yav tom ntej ntawm cov tshuaj pleev xim, khoom siv thiab cov txheej txheem tswj cov txheej txheem. Muaj cov lus teb zoo los pab txiav txim siab zoo, muaj kev nyab xeeb thiab muaj txiaj ntsig. u
Lawrence (Larry) Van Iseghem yog tus thawj tswj hwm/CEO ntawm Van Technologies, Inc. Van Technologies muaj ntau tshaj 30 xyoo ntawm kev paub txog kev siv tshuaj pleev xim UV-curable, pib ua ib lub tuam txhab R&D tab sis hloov pauv sai sai mus ua ib lub chaw tsim khoom ntawm Application Specific Advanced Coatings™ uas muab kev pabcuam rau cov chaw tsim khoom lag luam thoob ntiaj teb. Cov tshuaj pleev xim UV-curable yeej ib txwm yog qhov tseem ceeb, nrog rau lwm yam thev naus laus zis "Green" coating, nrog rau kev tsom mus rau kev ua tau zoo sib npaug lossis zoo dua li cov thev naus laus zis ib txwm muaj. Van Technologies tsim cov tshuaj pleev xim GreenLight Coatings™ raws li ISO-9001: 2015 certified quality management system. Yog xav paub ntxiv, mus saibwww.greenlightcoatings.com.
Lub sijhawm tshaj tawm: Lub Xya Hli-22-2023
