ASTM G154 siv thiab cov khoom yuav tsum tau txiav txim siab
ASTM G154 xeem siv fluorescent qhov chaw uas tuaj yeem simulateUVA los yog UVB. Cov txheej txheem no yog siv los ntsuas qhov cuam tshuam ntawm UV raug rau ntawm cov khoom siv khoom siv.Qhov no yog siv los ntsuas cov huab cua nrawm ntawm cov yas, cov nplaum thiab cov sealants, luam ntawv inks thiab coatings. Nws kuj tseem siv los ua huab cua nrawm ntawm ntau cov khoom tiav nrog rau cov khoom siv vov tsev thiab cov khoom siv sab nraum zoov.
ASTM G154 cov kev sim tsis raug
Ua ib qhoKev ntsuas huab cua nrawmuas yog tsim nyog rau koj daim ntawv thov, cov kev ntsuas nram qab no yuav tsum tau txhais:
Lub teeb fluorescent
Lub teeb theem irradiance
Hom kev ya raws
Lub sij hawm ntawm lub teeb thiab ya raws raug
Qhov kub ntawm lub teeb raug
Qhov kub ntawm noo noo raug
Lub sijhawm ntawm lub teeb / tsaus ntuj.
Lwm yam kev xeem muaj feem xyuam
Raws li ib qho kev xaiv rau Fluorescent lub teeb raug, ib tug yuav tsum xav txog ASTM G155.
Ntau txoj hauv kev xeem ASTM hu ASTM G154. Ntawm lwm tus koj yuav pom ASTM D1248, ASTM D5208 thiab ASTM D5894, uas ua ke nrog UV raug nrog ASTM G85 (ntsev cyclic corrosion).
Thaum raug ASTM G154, kev ntsuas sib txawv tuaj yeem ua kom muaj nuj nqis rau kev laus.
Kev xav txog tswv yim thiab kev txheeb xyuas cov ntaub ntawv
Thaum ua cov kev xeem ASTM G154, ntau yam ua tau zoo cuam tshuam rau qhov raug thiab rov tsim dua ntawm cov txiaj ntsig. Piv txwv li, hom teeb fluorescent xaiv (UVA-340, UVB-313, lossis UVB-351) txiav txim siab qhov spectral tis thiab, yog li ntawd, qhov℃ntawm photodegradation. UVA teeb pom kev zoo dua lub hnub ci ntuj, thaum UVB teeb nrawm nrawm dua, feem ntau siv rau kev tshuaj ntsuam xyuas.
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| Teeb | Tus tswj |
Kev tswj dej noo yog qhov tseem ceeb sib npaug. Feem ntau G154 cycles hloov ntawm UV raug thiab condensation. Thaum lub sij hawm condensation, dej vapor condenses ntawm tus qauv qhov chaw, ua raws li cov lwg los yog los nag. Cov txheej txheem no txhawb nqa ob qho tib si duab -oxidation thiab hydrolysis- ob lub ntsiab mechanisms ntawm cov khoom aging.
Tsis tas li ntawd, qhov ntsuas kub tsis sib xws yuav tsum tau saib xyuas kom zoo, vim tias qhov kub thiab txias cuam tshuam rau cov tshuaj tiv thaiv thiab tuaj yeem cuam tshuam cov txiaj ntsig yog tias tsis khaws cia hauv ± 2 degree. Kev sib xyaw ua ke ntawm qhov tseeb irradiance thiab kev tswj qhov kub thiab txias ua kom muaj kev sim rov ua dua nyob hauv cov chaw sim sib txawv.
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Qauv |
UV-SI-260 |
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Sab hauv Dimension (mm) |
450*1170*500 |
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Zuag qhia tag nrho Dimension (mm) |
680*1300*1500 |
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Irradiation Source |
Fluorescent UV teeb (8) - 40 W |
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Qhov kub thiab txias |
Ambient - 90℃± 2 degree |
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Dub Vaj Huam Sib Luag Kub (BPT) |
35 - 80 degree |
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Humidity Range |
Ntau dua lossis sib npaug li 95% RH |
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Bandwidth |
290-400 nm |
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Irradiance Tswj |
0.3~20 W/㎡ |
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Qhov deb ntawm Specimen thiab teeb |
50 hli |
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Cua sov Element |
Nichrome rhaub |
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Tus tswj |
Programmable xim LCD kov npo maub los |
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Ethernet txuas, PC Txuas, USB |
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Cov Khoom Siv Dej |
Tsis siv neeg dej, dej purification system |
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Khoom siv sab hauv |
SUS304 stainless hlau |
Tom qab-Test Evaluation
Tom qab kis tau, cov qauv kuaj tau raug soj ntsuam ntau yam kev ntsuas los ntsuas qhov kev puas tsuaj. Cov no suav nrog:
Colorimetric Analysis:Txiav txim siab fading lossis yellowing siv ΔE qhov tseem ceeb.
Gloss Measurement:Ntsuam xyuas nto dulling los yog kev ntxhib los mos hloov.
Tensile Strength Test:Txheeb xyuas qhov poob ntawm cov neeg kho tshuab kev ncaj ncees.
Microscopic soj ntsuam:Txheeb xyuas qhov tawg, chalking, lossis delamination.
Los ntawm kev sib piv ua ntej- thiab tom qab- cov ntaub ntawv raug, engineers tuaj yeem kwv yees lub neej expectancy ntawm cov khoom thiab txheeb xyuas cov ntsiab lus tsis muaj zog hauv kev tsim lossis tsim.
Qhov tseem ceeb rau kev tsim khoom thiab kev ruaj ntseg zoo
Ua raws li ASTM G154 kev ntsuas huab cua nrawm thaum lub sijhawm tsim qauv ua ntej tso cai rau cov tuam txhab:
Screen cov ntaub ntawv sai sai ua ntej ntev - kuaj sab nraum zoov.
Sib piv lwm cov formulations nyob rau hauv tib yam.
Ua raws li cov txheej txheem thoob ntiaj teb zoo.
Txo kev tiv thaiv kev pheej hmoo cuam tshuam nrog cov khoom lag luam ntxov ntxov.
Cov Khoom Siv thiab Cov Qauv Ua Raws Cai
Niaj hnub nimno UV exposure chambers-xws li LIB Accelerated UV Exposure Test Chamber- yog tsim los kom tau raws li qhov xav tau ntawm ASTM G154. Cov tshuab no muaj qhov programmable lub teeb / tsaus voj voog, meej irradiance calibration, tsis siv neeg condensation tswj, thiab sib faib kub. Kev ua raws li ISO 4892-3 thiab ASTM G151 ua kom ntseeg tau tias cov txiaj ntsig kev xeem tuaj yeem ua raws thiab ua raws li thoob ntiaj teb.
Thaum kawg, ASTM G154 kev sim muab cov tuam txhab ua haujlwm tau zoo, lub sijhawm- ua haujlwm tau zoo, thiab cov qauv txheej txheem los simulate xyoo ntawm kev laus sab nraum zoov hauv lub lis piam lossis hli -pab xyuas kom cov ntaub ntawv khaws lawv cov kev ua tau zoo, zoo li qub, thiab kev ntseeg siab hauv qhov tiag - ntiaj teb ib puag ncig.
