UltraViolet lub teeb absorbers tau paub txog cov qauv yas, rau qee lub sijhawm, raws li qhov tsim nyog ntxiv los tiv thaiv cov yas los ntawm lub sij hawm ntev degrading los ntawm tshav ntuj.Infrared absorbers tau paub tsuas yog rau ib pawg me me ntawm cov yas formulators.Txawm li cas los xij, raws li lub laser pom daim ntawv thov ntau ntxiv no kuj tsis paub txog cov additives yog nce hauv kev siv.

Raws li lasers tau muaj zog dua, nyob rau hauv lub lig sixties thiab seventies thaum ntxov, nws tau ua pov thawj tias laser tswv yuav tsum tau kev tiv thaiv los ntawm qhov muag tsis pom kev ntawm infrared tawg.Nyob ntawm lub zog, thiab qhov sib thooj ntawm lub laser rau lub qhov muag, qhov muag tsis pom ib ntus lossis mus tas li tuaj yeem tshwm sim.Nyob rau tib lub sijhawm, nrog rau kev lag luam ntawm polycarbonate, molders kawm siv infrared absorbers nyob rau hauv daim hlau rau welder lub ntsej muag shields.Qhov kev tsim kho tshiab no muaj lub zog muaj zog, tiv thaiv los ntawm hluav taws xob infrared thiab tus nqi qis dua li cov iav phaj tom qab siv.

Yog tias ib tus xav thaiv txhua qhov hluav taws xob infrared, thiab tsis txhawj xeeb txog kev pom los ntawm lub cuab yeej, ib tus tuaj yeem siv carbon dub.Txawm li cas los xij, ntau daim ntawv thov xav tau kev sib kis ntawm lub teeb pom kev zoo nrog rau kev thaiv cov infrared wavelengths.Qee qhov kev thov no suav nrog:

Military Eyewear - Cov lasers muaj zog yog siv los ntawm cov tub rog rau kev nrhiav thiab pom riam phom.Nws tau raug tshaj tawm tias thaum lub sij hawm Iran - Iraq tsov rog ntawm yim caum, cov Iraqis siv lub zog laser range finder ntawm lawv cov tso tsheb hlau luam ua riam phom rau qhov muag tsis pom cov yeeb ncuab.Nws tau rumored tias tus yeeb ncuab muaj peev xwm tab tom tsim lub laser muaj zog siv los ua riam phom, npaj rau qhov muag tsis pom cov yeeb ncuab pab tub rog.Lub Neodynium / YAG laser emits lub teeb ntawm 1064 nanometers (nm), thiab yog siv rau kev nrhiav ntau yam.Yog li ntawd, niaj hnub no cov tub rog hnav looj tsom iav dub nrog lub lens molded polycarbonate nrog ib los yog ntau tshaj Infrared Absorbers, uas nqus heev ntawm 1064 nm, los tiv thaiv lawv los ntawm qhov teeb meem raug rau Nd / YAG laser.

Medical Eyewear - Muaj tseeb tiag, nws yog ib qho tseem ceeb rau cov tub rog kom muaj qhov pom kev zoo hauv cov tsom iav, uas thaiv Infrared Radiation.Nws yog qhov tseem ceeb tshaj plaws uas cov neeg ua haujlwm kho mob siv lasers muaj qhov pom kev zoo tshaj plaws ntawm lub teeb kis tau tus mob, thaum muaj kev tiv thaiv los ntawm qhov xwm txheej raug rau cov lasers uas lawv siv.Lub infrared absorber xaiv yuav tsum tau sib koom ua ke kom nws absorbs lub teeb ntawm lub wavelength ntawm emission ntawm lub laser siv.Raws li kev siv cov lasers hauv cov tshuaj nce ntxiv, qhov xav tau kev tiv thaiv los ntawm kev phom sij ntawm cov hluav taws xob infrared kuj yuav nce ntxiv.

Welder's Face Phaj thiab Goggles - Raws li tau hais los saum no, qhov no yog ib qho ntawm cov kev siv qub tshaj plaws ntawm Infrared Absorbers.Yav dhau los, lub thickness thiab cuam tshuam lub zog ntawm lub ntsej muag phaj tau teev los ntawm kev lag luam tus qauv.Qhov kev qhia tshwj xeeb no tau xaiv feem ntau vim tias cov infrared absorbers siv lub sijhawm yuav hlawv yog tias ua tiav ntawm qhov kub siab dua.Nrog rau qhov tshwm sim ntawm Infrared Absorbers nrog ntau dua thermal stability, qhov tshwj xeeb tau hloov xyoo tas los tso cai rau cov looj tsom iav ntawm txhua qhov tuab.

Cov neeg ua haujlwm hluav taws xob siv hluav taws xob ntsib cov ntaub thaiv npog - Cov neeg ua haujlwm hluav taws xob hluav taws xob tuaj yeem raug hluav taws xob infrared yog tias muaj cov hluav taws xob txuas hluav taws xob.Qhov hluav taws xob no tuaj yeem ua rau qhov muag tsis pom, thiab qee zaum nws tau ua rau tuag taus.Cov ntaub thaiv npog ntsej muag suav nrog cov khoom siv hluav taws xob infrared tau pab txhawm rau txo qhov kev ntxhov siab ntawm qee qhov xwm txheej no.Yav dhau los, cov ntaub thaiv npog ntsej muag no yuav tsum tau ua los ntawm cellulose acetate propionate, vim hais tias lub infrared absorber yuav hlawv yog siv polycarbonate.Tsis ntev los no, vim tias muaj ntau qhov thermally ruaj khov infrared absorbers, polycarbonate lub ntsej muag shields tau qhia, muab cov neeg ua haujlwm xav tau kev tiv thaiv ntau dua.

High-end skiing tsom iav - Hnub ci pom los ntawm cov daus thiab dej khov tuaj yeem ua rau cov neeg caij ski tsis pom kev.Ntxiv nrog rau cov xim dyes, pleev xim rau cov tsom iav, thiab ultraviolet lub teeb absorbers los tiv thaiv UVA thiab UVB hluav taws xob, qee cov tuam txhab tam sim no tau ntxiv infrared absorbers los tiv thaiv cov teeb meem ntawm hluav taws xob infrared.

Muaj ntau ntau lwm yam kev nthuav dav siv cov khoom tshwj xeeb ntawm infrared absorbers.Cov no suav nrog laser ablated lithographic luam ntawv daim hlau, laser vuam ntawm yas zaj duab xis, optical shutters, thiab kev ruaj ntseg inks.

Peb pawg loj ntawm cov tshuaj siv los ua infrared absorbers yog cyanine, aminium ntsev thiab cov hlau dithiolenes.Cov cyanines yog cov molecules me me thiab yog li tsis muaj qhov thermal stability los siv hauv molded polycarbonate.Cov ntsev aminium yog cov molecules loj dua thiab muaj thermally ruaj khov dua li cyanines.Kev tsim kho tshiab hauv cov chemistry no tau nce qhov siab tshaj plaws molding kub ntawm cov absorbers ntawm 480oF txog 520oF.Nyob ntawm cov chemistry ntawm cov ntsev aminium, cov no tuaj yeem muaj infrared absorption spectra, uas muaj ntau yam ntawm qhov dav mus rau qhov nqaim.Cov hlau dithiolenes yog cov thermally ruaj khov tshaj plaws, tab sis muaj qhov tsis zoo ntawm kev pheej yig heev.Qee tus muaj qhov nqus spectra, uas yog nqaim heev.Yog tias tsis ua kom zoo, cov hlau dithiolenes tuaj yeem muab cov ntxhiab tsw ntxhiab tsw ntxhiab thaum ua haujlwm.

Cov khoom ntawm infrared absorbers, uas yog qhov tseem ceeb tshaj plaws rau polycarbonate molders, yog:

Thermal Stability - yuav tsum tau saib xyuas zoo hauv kev tsim thiab ua cov polycarbonate uas muaj cov aminium ntsev infrared absorbers.Tus nqi ntawm absorber xav tau los thaiv qhov xav tau ntawm cov hluav taws xob yuav tsum tau muab xam nrog rau qhov tuab ntawm lub lens.Qhov siab tshaj plaws qhov kub thiab lub sij hawm yuav tsum tau txiav txim thiab ua tib zoo soj ntsuam.Yog hais tias lub infrared absorber tseem nyob rau hauv lub tshuab molding thaum lub sij hawm "ntev kas fes so", lub absorber yuav hlawv tawm thiab thawj ob peb daim molded tom qab so yuav raug tsis lees paub.Qee qhov tsim tshiab aminium ntsev infrared absorbers tau tso cai rau qhov siab tshaj plaws kev nyab xeeb molding kub kom nce los ntawm 480oF mus rau 520oF, yog li txo tus naj npawb ntawm qhov tsis lees paub vim qhov kub hnyiab.

Absorptivity - yog qhov ntsuas ntawm infrared thaiv lub zog ntawm lub absorber ib chav tsev ntawm qhov hnyav, ntawm ib lub wavelength tshwj xeeb.Qhov siab dua qhov nqus, lub zog thaiv ntau dua.Nws yog ib qho tseem ceeb uas tus neeg muag khoom ntawm infrared absorber muaj qhov zoo ntawm batch-rau-batch sib xws ntawm absorptivity.Yog tias tsis yog, koj yuav tau hloov kho nrog txhua pawg ntawm absorber.

Visible Light Transmission (VLT) - Hauv cov ntawv thov feem ntau koj xav kom txo qis kev sib kis ntawm lub teeb infrared, los ntawm 800 nm txog 2000nm, thiab ua kom pom lub teeb pom kev loj tshaj plaws ntawm 450nm txog 800nm.Tib neeg lub qhov muag yog rhiab heev rau lub teeb nyob rau hauv cheeb tsam ntawm 490nm rau 560nm.Hmoov tsis zoo, tag nrho cov muaj infrared absorbers nqus tau qee lub teeb pom kev zoo li lub teeb infrared, thiab ntxiv qee cov xim, feem ntau yog ntsuab rau qhov molded.

Haze - Muaj feem cuam tshuam rau Kev Pom Kev Teeb Pom Kev, haze yog ib qho khoom tseem ceeb hauv cov tsom iav vim nws tuaj yeem txo qhov pom kev zoo.Haze tuaj yeem tshwm sim los ntawm impurities hauv IR Dye, uas tsis yaj hauv polycarbonate.Cov tshiab aminium IR Dyes yog tsim nyob rau hauv xws li ib txoj kev uas cov impurities raug tshem tawm tag nrho, yog li tshem tawm haze los ntawm qhov chaw, thiab coincidentally txhim kho thermal stability.

Cov Khoom Txhim Kho thiab Txhim Kho Cov Khoom Zoo - Qhov kev xaiv raug ntawm Infrared Absorbers, tso cai rau cov khoom siv plastics muab cov khoom lag luam nrog kev txhim kho kev ua tau zoo thiab nrog cov qib siab tsis tu ncua.

Raws li infrared absorbers yog kim kim tshaj li lwm yam yas additives ($/gram es tsis txhob $/lb), nws yog ib qho tseem ceeb heev uas tus formulator yuav tsum tau saib xyuas zoo los tsim kom meej meej kom tsis txhob pov tseg, thiab ua kom tau raws li qhov xav tau.Nws yog ib qho tseem ceeb sib npaug uas tus processor ua tib zoo tsim cov txheej txheem tsim nyog kom tsis txhob tsim cov khoom tsis raug.Nws tuaj yeem ua haujlwm nyuaj, tab sis tuaj yeem ua rau cov khoom muaj txiaj ntsig zoo ntxiv.