Tsev khaws puav pheej Artifact Protection nrog Acrylic Case

Kuv tau siv ob xyoo dhau los saib cov tsev cia puav pheej ua yuam kev tib yam nrog cov rooj sib tham. Plexiglas G debacle ntawm thaum ntxov 2000s tseem haunts kuv. Peb lub tsev kawm ntawv uas kuv tau sab laj rau yuav tsum tau hloov tag nrho cov chav ua yeeb yam tom qab lawv UV- lim acrylic tig butter daj hauv yim xyoo. Rohm thiab Haas yeej tsis tau hais txog qhov ua yuam kev nrog cov txheej txheem no.

Casting tiv thaiv extruded. Qhov ntawd yog qhov kev sib tham feem ntau yuav tsum pib tab sis tsis tshua ua. Stefan Michalski ntawm Canadian Conservation Institute tau luam tawm ua haujlwm hauv xyoo 1998 uas qhia PMMA ua haujlwm zoo tshaj plaws ntawm daim ntawv extruded hauv kev kuaj pom qhov pom tseeb los ntawm qhov ntsuas tau los ntawm qhov ntsuas tau- qhov ntsuas qhov ntsuas tsis zoo nyob hauv lub vaj huam sib luag. Cov khoom siv extruded muaj kev ntxhov siab sab hauv los ntawm cov txheej txheem tsim khoom uas tuaj yeem ua rau muaj kev sib hloov maj mam dhau sijhawm. Feem ntau cov chaw yuav khoom tsis paub qhov txawv. Lawv pom "acrylic" ntawm ob nqe lus thiab xaiv qhov pheej yig dua.

Lub koom haum Getty Conservation tau khiav ceev cov kev ntsuam xyuas kev laus rov qab rau xyoo 2007 uas pom Acrylite OP-3 tuav tau zoo dua li cov neeg sib tw rau UV pom lub neej ntev. Jean Tétreault phau ntawv 2003 los ntawm CCI tseem yog phau bible no. Nws sau ntawv tawm-gassing los ntawm kaum ob ntawm cov ntaub ntawv tsim kho. Silicone sealants tso cyclic siloxanes. Qee qhov ua npuas ncauj padding tso tawm formaldehyde. Cov ntaub ntawv dhau los ua qhov kaw kaw qhov twg cov volatiles mloog zoo.

Qhov teeb meem sealing tsis muaj leej twg hais txog

Nov yog qhov ua rau kuv vwm. Tsev khaws puav pheej obsess tshaj airtight seals. Ib tug npoj yaig ntawm V&A tau qhia kuv txog ib rooj plaub uas tau kaw zoo heev nws tsim cov mob anaerobic. Lub bronze tsim muaj zog corrosion vim hais tias cov silica gel tsis tuaj yeem ceev txaus thiab qhov tsis muaj oxygen tau ua rau qee txoj kev degradation. Paul Lankester thiab Peter Brimblecombe luam tawm txoj kev tshawb fawb hauv 2012 hauvKev tshawb fawb hauv kev txuagdocumenting raws nraim qhov tshwm sim no.

Qhov chaw qab zib zoo li nyob ib puag ncig 0.3-0.5 huab cua pauv ib hnub. Tsis yog xoom. Smithsonian's Museum Conservation Institute tau sim nyob rau thaum ntxov 2010s -Kuv xav tias nws tau luam tawm nyob rau hauv 2013-qhia tias cov ntaub ntawv kaw ntom nti nrog cov silica gel zoo zoo tshaj qhov ua tau zoo ntawm cov khoom sib xyaw rau cov khoom sib xyaw.

Feem ntautsev cia puav pheej -qib acrylic lwm tus neegyuav qhia rau koj tias lawv cov khoom thaiv 99% ntawm UV. Tus lej ntawd txhais tau tias tsawg dua qhov koj xav. Lub cutoff wavelength tseem ceeb dua. OP-3 txiav tawm ib ncig ntawm 400nm. Qee qhov pheej yig dua UV-filtering acrylics tsuas yog txiav tawm ntawm 380nm. Lub 380-400nm ntau yog raws nraim qhov twg cov organic dyes yog qhov yooj yim tshaj plaws. Cov qauv Blue Wool uas cov neeg saib xyuas siv rau kev kuaj pom lub teeb pom kev puas tsuaj nrawm tshaj plaws hauv qhov ntau.

Thickness xam

Kuv tau pom cov xwm txheej spec'd ntawm 6mm thickness thaum lub sijhawm kom pom tseeb xav tau 10mm lossis ntau dua. Deflection tsis yog aesthetic xwb. Lub sagging sab saum toj vaj huam sib luag hloov lub ntim sab hauv. Qhov ntawd cuam tshuam rau lub peev xwm microclimate buffering. Cov qauv no tsis nyuaj-ib tus engineer paub nws-tab sis qhov hloov pauv uas tib neeg tsis nco qab suav nrog cov thermal expansion coefficient ntawm PMMA, uas khiav txog 7 × 10⁻⁵ ib℃Celsius. Nyob rau hauv ib chav tsev nrog 10℃txhua hnub viav vias, 1.5 meter vaj huam sib luag tuaj yeem nthuav dav thiab cog lus ze li 1 hli. Yog tias koj lub thav duab tsis haum rau qhov kev txav no, koj tau txais kev ntxhov siab crazing ntawm cov ces kaum.

Ua haujlwm nrog akev cai acrylic fabrication serviceuas nkag siab txog cov kev zam no yuav cawm tau mob taub hau. Kuv kawm qhov no nyuaj ntawm ib lub tsev cia puav pheej hauv Phoenix. Lub installer siv nruj aluminium channels. Thaum lub caij ntuj sov thib ob, txhua kis tau pom crazing ze ntawm cov ntsiab lus mounting.

Qhov teeb meem Röhm

Evonik-yav dhau los Röhm- ua Plexiglas. Lawv yog cov thawj patent tuav rov qab mus rau 1930s. Nyob ib ncig ntawm 2015 lawv cov European ntau lawm tau hloov qee cov qauv thiab cov neeg saib xyuas pom qhov sib txawv hauv kev ua haujlwm. Cov khoom gummed sib txawv thaum laser txiav. Ntug polishing ua rau cov txiaj ntsig sib txawv. Tsis muaj qhov no tshwm sim hauv ib qho ntaub ntawv qhia kev.

Qhov no tseem ceeb vimAcrylic Sheet lag luam wholesalefeem ntau tsis tuaj yeem qhia koj qhov twg ntau lawm batch lossis Hoobkas tsim cov khoom koj tab tom yuav. Ob daim ntawv nrog cov ntawv tshwj xeeb zoo ib yam tuaj yeem coj txawv txawv hauv kev tsim.

Kuv nug ib tug phooj ywg kws tshawb fawb txog qhov no. Nws taw tes rau kuv mus rau ib daim ntawv 2018 hauvPolymer Degradation thiab Stability-Wochnowski thiab cov npoj yaig hauv lub tebchaws Yelemes tau tshuaj xyuas seb qhov kev hloov pauv me me hauv cov txheej txheem polymerization cuam tshuam li cas rau ntev - lub sijhawm kho qhov muag. Lub takeaway: txawm tias "zoo tib yam" formulations los ntawm ntau lawm khiav yuav muaj peev xwm ntsuas qhov sib txawv ntawm cov laus.

Dab tsi ua tiag tiag

Lub Tsev khaws puav pheej National ntawm Asmeskas Khab tau ua qhov kev sim dav dav thaum lawv tsim lub DC chaw. Lawv tau luam tawm qee qhov txiaj ntsig tab sis cov ntaub ntawv tseem ceeb tau los ntawm kev sib tham tsis raug cai ntawm AIC cov rooj sib tham. Lawv cov ntaub ntawv siv ob -gasket system-EPDM rau lub foob thawj zaug thiab cov khoom siv silicone thib ob uas tso cai rau kev hloov pauv huab cua. Qhov chaw nruab nrab ntawm gaskets muaj activated charcoal daim ntaub.

Qhov no yog overkill rau ntau daim ntawv thov. Ib haiv neeg keeb kwm me me tsis xav tau aerospace- qib tswj ib puag ncig. Tab sis txoj ntsiab cai scales down. Kojacrylic zaub case tsumyuav tsum nkag siab tias rooj plaub tsim tsis yog hais txog cov phab ntsa ntshiab thiab lub qhov rooj xwb. Nws yog qhov system.

Rau textiles thiab ua hauj lwm ntawm daim ntawv, tus qauv 50 lux illumination txwv tau nyob ib ncig ntawm txij li thaum Thompson kev tshawb fawb nyob rau hauv 1960s -Garry Thomson phau ntawv 1978 codified nws. Tab sis kev ua haujlwm tsis ntev los no qhia tau hais tias kev tsis sib haum xeeb tshwm sim ntawm cov teeb pom kev tsawg heev thiab. Tsis tu ncua 50 lux tuaj yeem ua rau muaj kev puas tsuaj ntau dua li 150 lux nrog lub sijhawm so. National Gallery hauv London tau sim ua qhov no. Kuv tsis xav tias lawv tau tshaj tawm cov txiaj ntsig tseem ceeb.

Kev tu thiab tu

Anti- txheej txheej zoo li qub pab nrog cov plua plav attraction tab sis lawv degrade. Feem ntau xav tau rov thov dua txhua 18-24 lub hlis. CCI Technical Bulletin los ntawm 2007-Kuv xav tias nws yog tus naj npawb 14 lossis 15-npog cov txheej txheem tu. Isopropyl cawv ua haujlwm rau feem ntau cov kab mob. Tsis txhob siv lub khob ntxuav nrog ammonia. Kuv twb pom clouded panels los ntawm qhov yuam kev ntawd.

Nrhiav ibtsev cia puav pheej - qib acrylic fabrication tus khubleej twg nkag siab txog kev txuag- qib tu tseem ceeb rau kev tiv thaiv. Qee cov tuam txhab lag luam tsis muaj kev lav phib xaub yog tias koj siv lwm yam uas tsis yog lawv cov tswv cuab kev daws teeb meem. Nyeem cov ntawv zoo.

Cov lus nug tiv thaiv khawb tuaj tas li. Hardcoated acrylics zoo li Lucite AR cov khoom tiv thaiv khawb zoo dua tab sis cov txheej tuaj yeem delaminate ntau xyoo lawm. Rau cov khoom nyob rau ntev - lub sij hawm tso saib -Kuv tab tom tham 20+ xyoo tsis muaj ntaub ntawv nkag tau-Kuv xav kom cov ntawv tsis muaj coated. Koj tuaj yeem polish tawm khawb los ntawm cov khoom tsis muaj coated. Koj tsis tuaj yeem kho delaminated hardcoat.

Tus nqi tiag

Thaum koj ua tau zoo hauv fabrication, gaskets, hardware, internal mounting systems, and environmental buffering materials, acrylic panel nws tus kheej yog tej zaum 30-40% ntawm tag nrho cov nqi. Tsev khaws puav pheej uas kho cov nqi ntawm cov khoom siv tsis nco txog daim duab loj dua. Ib rooj plaub uas tsim tau zoo nrog cov acrylic nruab nrab yuav tiv thaiv cov khoom qub zoo dua li cov ntaub ntawv tsim tsis zoo nrog cov khoom zoo.

Uas tau hais tias, tsis txhob pheej yig tawm ntawm acrylic ib yam nkaus. Kev lag luam thib ob rau cov khoom siv rov ua dua PMMA tau loj hlob. Qee yam ntawm cov khoom ntawd muaj keeb kwm raug tsis paub. Cov khoom siv nkauj xwb los ntawm cov tuam txhab tsim khoom raug nqi ntau dua tab sis koj paub tias koj tau txais dab tsi.

David Thickett ntawm Lus Askiv Heritage tej zaum tau ua tiav ntau dua -kev sim ntiaj teb cov ntaub ntawv ntau dua li txhua tus neeg ua haujlwm tam sim no. Nws daim ntawv 2016 hauvHeritage Sciencepiv cov pa paug paug nyob rau hauv ntau hom ntaub ntawv nyob rau ntau- xyoo. Cov ntaub ntawv tau pom tias cov ntaub ntawv kaw tsis zoo uas tsis muaj cov pa phem sorbents ua tau phem dua li txawm tias cov ntaub ntawv kaw nrog cov silica gel tshiab. Activated charcoal ua qhov sib txawv tseem ceeb rau cov organic acid tswj tab sis xav tau hloov txhua xyoo.

Tsis muaj qhov no yog kev paub zais cia. Nws yog tag nrho luam tawm. Tab sis qee qhov kev ua yuam kev qub tau rov ua dua. Lub hli tas los kuv tau mus xyuas lub tsev tshiab uas tau kho dua tshiab ntawm ib nrab ntawm - lub koom haum loj. Cov rooj plaub zoo nkauj. Cov ntaub ntawv hwm. Tsis hais txog kev tswj hwm microclimate hauv lawv lub sijhawm tu. silica gel yuav saturate nyob rau hauv 18 lub hlis thiab tsis muaj leej twg muaj peev xwm los hloov.

Lub tshuab tsis yog qhov nyuaj ntxiv lawm. Qhov nyuaj yog lub koom haum cog lus rau kev saib xyuas tsis tu ncua.