Flowable Silicone Sealant Yokonza Zowonongeka Zowonongeka za Solar Module

Gulu lina lofufuza la ku Czechoslovakia lapanga -gel osakaniza a polysiloxane ochita bwino kwambiri omwe amatha kukonza bwino ma module a solar omwe adawonongeka, kubwezeretsanso mphamvu zake zotsekera komanso kukulitsa nthawi yogwira ntchito ya makina okalamba a photovoltaic (PV). Yankho lamakonoli lithana ndi vuto lalikulu lomwe oyendetsa magetsi oyendera dzuwa akukumana nalo, chifukwa kuwonongeka kwa ma sheetshi -makamaka m'ma module opangidwa cha m'ma 2010-nthawi zambiri kumabweretsa nkhawa zachitetezo komanso kutayika kwakukulu kwa magetsi.

Ofufuzawa adagwiritsa ntchito gelisi yapadera ya polysiloxane, yopangidwa mogwirizana ndi Czech{0}opanga silicone yochokera ku Siltech Solutions, yomwe imagwiritsidwa ntchito ngati encapsulation yothandizira ma module a PV. Mosiyana ndi zida zokonzetsera zokhazikika, gululi lidasintha gel osakaniza kuti azitha kuyenda bwino, kulola kudzaza ming'alu yopapatiza ndikupanga wosanjikiza woteteza pamapepala owonongeka. Geliyo imapangidwa ndi silikoni{{3}based polima matrix, yowonjezeredwa ndi silika wofukizira monga chodzazira kuti chikhale cholimba, ndi chinyezi-chochiza chomwe chimathandiza kuti chiwume chikakhala ku mpweya ndi chinyezi.

"Chinyezi-choyambika chochiritsira chimachokera kumtunda kupita kunja, ndi gel osakaniza pang'onopang'ono kuumitsa pamene chinyontho chimalowa muzinthu," ofufuza anafotokoza. "Geliyo ikachiritsidwa bwino, imapanga elastomer yosunthika yokhala ndi mphamvu zolimba komanso zotalikira, zomwe zimapangitsa kuti zigwiridwe mwamphamvu kuzinthu zonse zodziwika bwino za m'mbuyo-ngakhale zomwe{3}}zinawonongeka kale kapena zosokonekera." Kumamatira kumeneku ndikofunikira kuti muteteze kulowetsedwa kwa chinyezi, chomwe ndichomwe chimayambitsa kuwonongeka kwa backsheet ndi kulephera kwa insulation.

 

Yesani pa zinthu zakumbuyo

Gelisi ya polysiloxane inayamba kuyesedwa pamitundu isanu yodziwika bwino ya backsheet, kusonyeza mitundu yosiyanasiyana ya zigawo zomwe zimagwiritsidwa ntchito mu PV modules pazaka khumi zapitazi: co-extruded polyamide (AAA backsheet); polyvinyl fluoride (PVF)-PET bilayer; polyvinylidine fluoride (PVDF)-PET bilayer; choyambirira-chokutidwa ndi PET; ndi ethylene tetrafluoroethylene (ETFE)-yotengera kompositi yatsopano. Zidazi zidasankhidwa chifukwa chogwiritsidwa ntchito mofala komanso kusatetezeka kodziwika pakuwonongeka pakapita nthawi.

Zitsanzo zamakona anayi (3cm m'lifupi, 12cm m'litali) zinadulidwa kuchokera kumtundu uliwonse wa mapepala akumbuyo, ndipo gel osakaniza ankapaka mpweya-mbali yowonekera ya mzere uliwonse. "Mzere wachiwiri wakumbuyo, mbali ya mpweya pansi, unayikidwa pamwamba pa gel-zokutidwa ndi chitsanzo ndikukanikizidwa pang'onopang'ono kuti gel osakaniza afikire makulidwe pafupifupi 1.2mm," gululo linatero. "Gelisi wowonjezera anachotsedwa m'mphepete, ndipo zitsanzozo zinachiritsidwa pa madigiri 25 Celsius ndi 55% chinyezi chochepa kwa masiku 30. Pambuyo pochiritsidwa, zitsanzozo zinayamba kukalamba mofulumira m'chipinda cha nyengo pa 85 digiri Celsius ndi 85% chinyezi kwa maola 1,000 -kuyesa kofanana kwa nthawi imodzi."

Poyesa-kuwunika kunawonetsa kuti gel osakaniza amamatira modabwitsa pamitundu yonse isanu yam'mbuyo, ndipo kulephera kwa 100% kumawonedwa pachitsanzo chilichonse. Izi zikusonyeza kuti mgwirizano pakati pa gel ndi backsheet unali wamphamvu kuposa gel wokha, kutsimikizira kudalirika kwa nthawi yaitali ndi kukana delamination.

 

Yesani pa -zaka zisanu ndi zitatu-zapani zomwe zawonongeka

Kenaka, gel osakaniza anayesedwa pa ukalamba PV modules ndi AAA backsheets amene anali akugwira ntchito kwa zaka eyiti ndi anasonyeza zizindikiro zoipitsitsa, kuphatikizapo ming'alu yaitali longitudinal pamwamba pa mabasi a selo ndi pamwamba brittleness. Gelisiyo inaperekedwa mwachindunji mu ming'alu pogwiritsa ntchito cartridge yolondola, kenako imafalikira mofanana pamtunda wonse wa backsheet ndi spatula yotakata kuti apange zokutira zoteteza. Ma modules okonzedwawo adayikidwa m'chipinda chomwecho cha nyengo kwa maola 1,000 a chithandizo cha kutentha kwachinyontho.

Miyezo yomwe idatengedwa pambuyo pa ukalamba idawonetsa kuti ming'aluyo idasindikizidwa kwathunthu ndipo siyikuwonekanso, ndipo ma module okonzedwawo adakwanitsa kukana kukana kwamphamvu kuposa 200 MΩ-kuposa zomwe zimafunikira chitetezo pakugwira ntchito kwa module ya PV. "Ngakhale pambuyo poyesa kutentha kwachinyezi, ma modules adasungabe kutsekemera kwapamwamba ndikupambana mayeso a kutayikira konyowa popanda zizindikiro za kulowa kwa chinyezi," ofufuzawo adazindikira. Izi zimatsimikizira kuthekera kwa gel osakaniza kubwezeretsa chitetezo chofunikira komanso magwiridwe antchito pama module okalamba.

 

Yesani pa ntchito yoyendera dzuwa

Pofuna kutsimikizira-ntchito zenizeni padziko lonse lapansi, gulu lofufuza linagwiritsa ntchito njira yokonzera fakitale ya sola ya 10MW ku Czech Republic, komwe ma module ambiri adawonongeka. "Geli ya polysiloxane idayikidwa m'munda popanda kutulutsa ma modules-otulutsidwa kuchokera pa cartridge ya m'manja ndi kusalaza pamwamba pa pepala lakumbuyo ndi spatula," gululo linatsindika. "Ma module okonzedwawo adasiyidwa kuti azigwira ntchito pansi pa-zikhalidwe zenizeni padziko lapansi kwa miyezi itatu, pokumana ndi kutentha kosiyanasiyana, chinyezi, ndi cheza cha UV."

Mayesero a kutayikira kwamadzi omwe anachitika pambuyo pa mayesero a m'munda adatsimikizira kuti ma modules okonzedwawo adasunga kukana kwakukulu kwa insulation ndikugwira ntchito mwachizolowezi, popanda kutsika kwa mphamvu zotulutsa mphamvu poyerekeza ndi ma modules osawonongeka. "Zotsatira zoyambirira zikuwonetsa kuti gel osakaniza amathandizira kuti ma module akhazikike, ngakhale kuyesa kwa nthawi yayitali-kwa zaka zingapo kumafunika kuti muwonetsetse kulimba kwake," ofufuzawo adatero. "Funso lofunika kwambiri lomwe latsala ndilakuti ngati pepala lakumbuyo lomwe lakonzedwa lingafanane ndi-nthawi yayitali yolepheretsa chinyezi, makamaka m'madera omwe kuli nyengo yoipa."

Kafukufukuyu adasindikizidwa mu pepala lotchedwa "Field{0}applicable polysiloxane gel repair for degraded photovoltaic module backsheets" mu Journal of Photovoltaics Research. Gulu lofufuzali linaphatikizapo asayansi ochokera ku Siltech Solutions Czech Republic, Austrian Research Institute for Chemistry and Technology (OFI), ndi Czech Technical University ku Prague-kulimbikira kuti apeze njira zowonongera ndalama{3}}zosasunthika, zokhazikika za PV.