Qhov teeb meem ntawm UV rays rau cov khoom
UV, lub teeb pom kev tsis pom sab nraum lub violet spectrum ntawm electromagnetic spectrum, ua rau muaj kev hem thawj rau cov khoom lag luam thiab nws cov teebmeem kev puas tsuaj yuav tsum tau ua tiag tiag. Ntawm ntau lwm yam cuam tshuam rau cov khoom siv, UV yog ib qho tseem ceeb ntawm cov khoom degradation. BOTO GROUP, ib lub chaw tsim khoom ntawm ib puag ncig kev sim khoom, muaj ntau yam ntawmUV aging testing tshuablos pab cov tuam txhab tshuaj ntsuam xyuas qhov ua tau zoo thiab kev hloov pauv ntawm cov ntaub ntawv nyob rau hauv UV, yog li ua kom cov khoom ntseeg tau nyob rau hauv tiag tiag - ntiaj teb ib puag ncig.
Thaum lub sij hawm ua, cia, los yog siv tiag tiag, cov ntaub ntawv los yog cov khoom yog raug rau kev sib koom ua ke los ntawm ntau yam sab nraud xws li tshav kub, lub teeb, oxygen, mechanical stress, ozone, teeb meem hlau ions, thiab hluav taws xob, ua rau cov kev hloov nyob rau hauv lawv lub cev los yog tshuaj qauv thiab maj mam poob ntawm lawv cov qub zog thiab usability.
Cov ntaub ntawv ntawm kev puas tsuaj los ntawm UV muaj ntau haiv neeg, tshwm sim raws li fading, poob ntawm gloss, chalking, cracking, splitting, txo transparency, blistering, embrittlement, txo lub zog, thiab oxidation. Cov kev puas tsuaj no tsis yog tsuas yog cuam tshuam cov khoom zoo nkaus li tab sis kuj ua rau nws cov kev ua haujlwm tsis muaj zog thiab ua rau nws lub neej ntev.
Cov khoom lag luam cuam tshuam los ntawm UV kev laus yog dav dav, suav nrog roj hmab, yas thiab lawv cov khoom, txheej, xim, nplaum, hlau, khoom siv hluav taws xob, cov khoom siv electroplated, thiab ntau lwm yam lag luam. Piv txwv li, cov hnab yas thiab cov khoom siv hauv cov khoom siv hluav taws xob yuav muaj hnub nyoog thiab degrade nyob rau hauv lub sij hawm ntev - UV raug; electroplated txheej kuj tuaj yeem tev tawm lossis hloov xim vim UV, yog li cuam tshuam rau cov khoom muag thiab kev tiv thaiv kev ua haujlwm.
Qhov tsim nyog ntawm UV aging test
UV los ntawm tshav ntuj yog qhov tseem ceeb ua rau photodegradation thiab photoaging hauv cov khoom. Qhov no yog vim UV muaj luv luv wavelength, siab zog, thiab muaj zog nkag mus rau lub zog. UV ua lub luag haujlwm tseem ceeb hauv lub hnub ci spectrum, thiab nws qhov kev puas tsuaj rau cov ntaub ntawv tshwj xeeb tshaj tawm. UV aging testing yog ib txoj hauv kev simulating cov teebmeem ntawm sab nraum zoov UV ntawm cov khoom nyob rau hauv ib puag ncig tswj kev sim. Siv lub tshuab ntsuas UV nrawm nrawm, cov kws tshawb fawb tuaj yeem tau txais cov ntaub ntawv rov qab thiab txhim khu kev qha cov ntaub ntawv laus hauv lub lis piam lossis hli. Lub tshuab kuaj no, los ntawm kev sib xyaw ua ke ntawm luv luv - wavelength UV irradiation thiab ib qho kev sib xyaw ua ke, tuaj yeem rov ua dua cov txheej txheem kev puas tsuaj los ntawm tej yam ntuj tso xws li tshav ntuj, dej lwg, thiab los nag ntawm cov ntaub ntawv. BOTO, leveraging nws cov khoom tsim thiab pab neeg kev txawj ntse, muaj peev xwm muab cov neeg muas zaub nrog siab -kev ua tau zoo UV aging tshuab kuaj, pab lawv tswj kom muaj kev sib tw hauv khw.
Kev ntsuam xyuas kev laus ntawm UV feem ntau yog siv los simulate qhov kev ua haujlwm degradation los ntawm UV los ntawm lub hnub ci ntawm cov khoom, thiab tseem tuaj yeem tsim cov dej yaig los ntawm nag thiab dej lwg. Thaum lub sijhawm kuaj, cov qauv raug muab tso rau hauv qhov chaw tswj hwm ntawm kev hloov pauv ntawm UV thiab ya raws, thiab cov txheej txheem kev laus yog nrawm los ntawm cua sov. UV fluorescent teeb yog dav siv los simulate ib feem ntawm ultraviolet ntawm lub hnub ci spectrum, thaum condensation los yog tshuaj tsuag tshuab yog siv los simulate cov teebmeem ntawm ya raws ntawm cov ntaub ntawv nyob rau hauv cov xwm.
Taw qhia rau UV aging test method
(Nqa TPU zaj duab xis huab cua tiv thaiv kev sim ua piv txwv)
1. Test txhais
Qhov kev xeem no muaj ob theem sib law liag:
Thawj theem yog kuaj pom lub teeb ultraviolet;
Qhov thib ob theem yog ob chav 85 ib puag ncig kev ntseeg siab.
BOTO tuaj yeem ua nws tus kheej tsim txhua yam khoom siv rau kev xeem. Tom qab ua tiav ob theem ntawm kev sim, cov khoom siv kho qhov muag thiab kho qhov muag yuav tsum tau ntsuas.
2. Thawj theem
Raws li tus qauv ASTM G154 / G155, tus qauv yog irradiated nrog ultraviolet lub teeb siv cov khoom raug (QUV-313nm) rau 2000 teev (Los ntawm UV aging tshuab kuaj). Tom qab irradiation, qhov kev ntsuam xyuas raug tso tseg, thiab cov khoom siv kho qhov muag thiab kho qhov muag raug ntsuas. Cov kev txwv tshwj xeeb muaj nyob rau hauv cov lus hauv qab no.
3. Theem Ob
Cov qauv uas tau ua tiav kev raug ultraviolet raug muab tso rau hauvqhov kub thiab txias tas li chamberthiab kuaj tsis tu ncua rau 240 teev nyob rau hauv ob chav 85 yam mob (85℃/ 85% RH). Tom qab ziab, cov khoom siv kho qhov muag thiab kho qhov muag raug rov- soj ntsuam.
4. Cov cuab yeej siv
(1) Tensile Test (Tensile Test Tshuab): Txiav 2cm × 2cm kuaj ua ntej thiab tom qab kuaj. Kho ob qhov kawg thiab ncab lawv los ntawm 200% raws X thiab Y axes feem. Tuav rau 30 vib nas this thiab tom qab ntawd tso tawm. Saib xyuas TPU zaj duab xis nto. Yog hais tias tawg, discoloration (whitening), los yog breakage tshwm sim, nws yog txiav txim raws li "ua tsis tau tejyam"; yog tias tsis muaj qhov txawv txav, nws yog "dhau".
(2) Cuaj- theem xim daim duab kos duab pom: Siv los ntsuas qhov hloov xim ntawm TPU zaj duab xis ua ntej thiab tom qab ntsuas huab cua. Tom qab ua tiav ob qhov kev ntsuam xyuas ib puag ncig, yog tias qhov yellowing℃nyob nruab nrab ntawm 4.5 thiab 5, nws raug txiav txim tias "dhau"; yog tias nws yog 4-4.5, nws raug suav hais tias yog "tseem ceeb txais" thiab tsis siv tshwj tsis yog tsim nyog; yog tias nws qis dua 4, nws raug txiav txim tias "ua tsis tiav".