Zaman lafiya da kuma kari zuwa UV na filin Polycarbonate

Fahimtar Gafewar UV da Rolin Coatings Mai Tsaro

Ibiyayyen polycarbonate wanda ke dammatar da UVA da UVB radiation

Fusayar polycarbonate suna kullewa gaban kusan 99% na rayuwan UV da suka fi yawa aƙalla 380 nm, wanda ke kama da su ne daidai yake da glass ko acrylic a kullewa waɗannan rayuwar UVA (baya 315 zuwa 400 nm) da UVB (daga 280 zuwa 315 nm). Dalilin wannan kwamfuta ya dace da yadda kayan aiki ya tsauyace a matsayin nuklear. Wadannan tsarin alkaru mai tauri a cikin polymer suna zinzanya duk wadannan photon na ukuƙurna kafin su iya yin walda. Wasu testoni masu iyaka da suka bi ISO 4892-1:2016 suna nuna cewa kamar hakan ba tare da alamar gurbin, fusayar suna samunsa kama karshen 85% na kwamfutar kullewa rayuwar UV kafin su yi 5,000 hours na halayyen yanayi da suka yi a labo.

Yaushe exposure to UV ya haifar da cutar molekulun a cikin fusayar polycarbonate

An samun cutar matsayi ga abubuwan da aka yi amfani dashi a lokacin da aka bar da rayuwar UV, wanda ya fara cutar photo-oxidation, kuskuren chain na polymer, da haɓakar microcracks da group na carbonyl a sama. Ayyukan yanzu suna fuskantar shi ne a kauye:

1. Haɓakar UV ta generate wadanda suke yawa
2. Oxygen yana rage kansu da wadanda suke yawa don samar da peroxides
3. Rarraba hankali ta kama masa girma na molekule a cikin 40–60%

A shekara 2023, abubuwan lantagu da aka yi ne baƙin zauna zasu yi 12% tsinkin girman tauta a kowace shekara a cikin alamomin yamma.

Aiki mai mahimmanci na coatings na UV domin inganta nisa

Coatings na UV masu zaman hadari sun haɗa uku dandalin:

Nau'in Tsaro	Aiki	Tsunaki
Wadanda suke shirya	Canza tenetin UV zuwa harshen	Kunna 99.9% UV
Alakarƙi	Guzuru alzantin tsarin rashin yawa	Ƙara gabatarwa 3–5—
Alamarwa	Fasaha gafin da ke zuwa	Rago kwalin tushen 15°C

Wadannan alamar mai ƙaramin kunshi >90% na alkarƙi na optikal kuma kara gabatarwa daga zuwa 2–5 shekara (babu alamar) zuwa 10–15 shekara a waje.

An mara alamar vs. bai alamar: Kimanta gabatarwa da aiki bisa sama mai zurfi

Paramita	Safufa Mai Alamar	Shifidi na Bakunna
Tsawon Ciki (Shekara)	10–15	2–5
Nunan Kullewa (ΔYI)	<3	>15
Ajiyin Tafawa Taƙaita	95%	45%

Karin gwaji masu dandalin (ASTM G154) su nuna cewa shifidi masu kuma sun godiya zuwa ga wata 8,760+ sau da baƙi na UV—wanda ya equivalence da shekaru goma a Arizona—ba tare da kuskuren tsirin ƙasa ba.

Gudanar da abin da babba: Tsauri mai zurfi amma zuciya zuwa UV a shifidi na polycarbonate

Kamar haka za suke da alaƙa na karbonet da ke bamuwa tasiri mai tsauri (30× maso darau kan acrylik), kuma suna da iya wuya zuwa perokosidayen da ke sadarwa ta hanyar UV. Alamar mai inganci suna karkatar da wannan matsala ta hanyar ƙirƙirar yanki na gina, wanda ya ƙare tsaro mai tsaurin 900 kJ/m² na abubuwan da ke yanke har ma ba za su barin karfafa abubuwan da ke juyawa. An sami tattalin zafi na sama daga 50 μm/year zuwa <5 μm/year lokacin da aka sa alamar aiki.

Ayyukan Lokacin Da Ke Tsanyawa

Iyakar kwallo, rani, da kaiwar manyan anginci

Fuskar polikarbonet na gurji yake amfani da kwallo na cando daga -40°C zuwa 120°C ba tare da karni (ASTM D1435). Bayan kwayar, oke amfani da rani kama da 35mm a kaiwar mafi tsauri (NOAA 2022 bayani na tsanyi) kuma ya kai tsaro a karkashin anginci mai anginci da yawa 150 km/h—wanda ya dace da alama na Category 2 hurricane.

Ayyukan a karkashin canjin cando da kaiwa a waje a lokacin da ke tsakanin

Tare da coefficient na thermal expansion kasa (70 x 10⁻⁶/°C), abubuwan darawa yana kare warping a cikin freeze-thaw cycles 1,000+ (ISO 4600). Alƙawarin yanayi suna nuna 95% retention na ikar tafiya zuwa 15 shekara a yanayin yanayi, tare da guddun da aka yi ta UV suna nuna ya fi ɗan 5% haze increase a lokacin amfani na waje.

Iyakar ruwa da alamar bangon polycarbonate na gurji

Gurji na polycarbonate yana kunshe ruwa adadin 0.1% (ASTM D570-22), kuma yana cire abubuwan darawa na hydrolysis kamar yadda ya ke 100% humidity. Wannan yana kare fogging da delamination, kuma yana bada >92% na samun iliminsu a yankunan dutsen, wato masu iyaka karfi duk da acrylics 75% a cikin halayyen iri daya.

Idanun tsaro na tsari a cikin kalmomi daban-daban

Daidaiton zinari, karo da ruwa, da kuma ainiyar UV suna garu ayyukan aiki daga wuraren arktik zuwa saharu. A cingon zarar ISO 4892-3 wanda ke nuna karfe na 25 shekara, sarufan kayan aiki mai yawa suna bada 89% tsauraran tensile da kuma 97% daidaiton girman kayan aiki, wanda ke tafiya PVC da polypropylene ta hanyar 42–58% a matsayin kama da juyawa.

Zababbun halartu a faburkar teknoloji na ainiyar UV

Hanyoyin amfani da aljibbita mai ainiyar UV bayan faburka

Masu faburci suna amfani da uku daban-daban:

1. Aljibbita ta waya (duba ko kuma kwalli) don ainiyar abubuwan da ke ikoƙin gudunmawa, da kama da kuruci
2. Co-extrusion yana haɗawa alamar da ke tsangaya da ainiyar UV yayin tsarin sarufa, kuma yana ba da izinin haɗin abada
3. Haɓakar plasma mai inganci yana nuna aljibbita na nanoscale ba tare da kawarar sauƙin rubutu

Yauke, yankin da yawa wanda ke haɗa alhurin substrates da filtar da ainiyar UV a biyu doka ya zama abin da ake amfani da shi. Raji na 2023 akan Durability na Polymer ya samo cewa sarufan co-extruded suna bada 92% kewayon ruwa bayan shekaru 8, komparawa da 67% ga wasu aljibbita da aka waya.

Tsakanin layi na UV da aka co-extruded da aka laminated: Fayilashe da alaƙa

Fasali	Co-Extruded	Laminated
Tsohon Takaingin UV	50–100μm layi na musamman	25–50μm layi na sama
Impact resistance	Yana da 95% na gurbin abubuwan samunni	Yana karewa ne 15–20%
Kusar Faburka	+18–22%	+8–12%
Tsokacin Kama da Daidaitawa	Lai daidai	Abubuwan da za a iya kawo sauya

An yarda da Co-extrusion don amfani da shi a cikin kayan aiki masu tabbatarwa na kowane shekara, yayin da an fi saka laminated sheets don amfani na abada. Kowanne dabbobi suni daidaita ma'auni na ISO 4892-3 lokacin da a saka su tare da hankali.

Zabin yanayin yanayi da ma'auni na sarari don kama da UV

Yanayin aiki ya wadu ba tare da amfani da:

• Zabin Xenon-arc (ASTM D2565): Yana nuna shekaru goma na rayuwa a cikin awa 2,000
• Zabin QUV (ASTM G154): Yana canza UV tare da condensation
• Gurbin lissafi na spectrophotometer : Ya misawa tsawon waya (ΔYI <2.0 bayan 5,000 sa’a)

Mafarka na saye suna nuna hoton da aka samuwa ta UV suna kama da 89% tsaro bayan 15 MW/m² gwaji na UV—wanda ya dace da 12 shekara a Phoenix, Arizona.

Tabbatar da kayan aikin gine-ginen polycarbonate don amfani a waje

Masu samar da uku na uku ke amfani da spectroscopy na yanki don duba kowane 1.2 mita na samarwa, kuma za a warware tsarin gwaji na ASTM D1435 kowane tukunma a yankunan da suka faru, yankunan tropical, da yankunan mai zurfi don tabbatar da izinin 25 shekara na hana kwalon solshe.

Ingancin da Ake Amfani Shiga Yanzu Da Kuma Gudanarwa A Masana’antar Waje

Abubuwan da ake amfani da su a waje: Kayan tagaya, masu kula, da kayan tagayawa masu iko mai gini da gine-ginen polycarbonate

Skylights na al’umma yana daidai domin polycarbonate mai tsauri saboda ya tafi daidai zuwa ga kibiyoyin galibi yayin da ke iya ƙarfi kamar 250 kwallo. Don canopies na stadium, wani girmi yana daidai saboda yana mili karuwa nawa uku per square foot yayin da galibi yana karuwa takamaiman 2.7 pound don hukumar same. Sai kuma, skylights suna ba da shaida zama 90% na iluminasi. Lokacin da maƙimarke suna so su kashe ƙarfin ruwa, suna daidai wajen amfani da nau’ikan multiwall sashin single panes. Wadannan haɓakokin suna kashe thermal conductivity ta kama 60%, wanda ke sauya su zama dabi’a a cikin manyan ayyukan gona inda efficiency na energy ke yanke balamu.

Tacekor tarbiyya: Idojin 10 shekara na sheets UV-coated a cikin mahulun tropics

A 2023 study by HAMK University of Applied Sciences ya kara bin gidan da aka samuwa a Singapore (maigi na UV 12). Waɗansu abubuwan da aka buɗe sun tsaya da 92% yin sadarwa na alawa labarin shekara goma, sun fara fuskantar waɗansu abubuwan da aka raba su da aka nuna cewa sun yi 8% sayyan alawa. Abubuwan tadonin sun tabbatar da cewa sauya mai kyau yana kula da ƙaramin girman 0.15% annually wanda aka ga shi a cikin samfurin da ba a sauya ba.

Amsawa zuwa sayyan alawa ta hanyar UV, sauyawa, da loss of transparency over time

Wasu abubuwan da aka haɗa zuwa a yau sun kama sayyan alawa zuwa <2% ΔYI labarin 15,000 hours na accelerated weathering (ISO 4892-2). Wasu abubuwan da aka haɗa sun kama sadarwar alawar alawa >85% irin kondensa da ke canzawa, sannan sun kama 70–80% PAR (Alawar da ke iya amfani da shi wajen yawan bututu) wanda ke mahimmanci don performance na greenhouse.

Best practices for cleaning and maintaining UV resistance

Yi amfani da alkaru masu tsutsu na pH (6.5–7.5) tare da kwando mai microfiber domin kula daga abrasion na coating. Kula daga alkaru kamar acetone, wadanda suka dissolves 1.2 µm/year na abubuwan farin gurama. Tabbatar da ayyukan dubawa zuwa biyu a makon karu suna iya nuna alkaru mai kyau (<0.3 mm depth), wanda ya kasance sababi na 73% na ayyukan soye-soye a yankin pantun (salinity >3.5%).

Sashen Tambayoyi

Wanne ne zai samar da polycarbonate yaushe sosai karfe darajar glass a kula da zarar UV?

Tsarin jiki na polycarbonate yana ƙara karfin karɓar zarar UVA da UVB yaushe sosai karfe darajar glass, tare da amincewa cikin 99% na sauri a kula da zarar UV.

Shin yaya coatings na UV taya yake yin nisa ƙarfi na shekulla mai polycarbonate?

Coatings na UV taya yake ajiye daga degradation ta hanyar kula da zarar UV, amincewa free radicals, da kuma reduce heat buildup, wanda ya kara nisa ƙarfi na shekulla daga 2–5 zuwa 10–15 shekara.

Wanne ne daban-daban bayan layers na UV-resistant na co-extruded da laminated?

Alkawalin da aka hada suna ƙara ajiyar UV cikin shafin, bamu tacewa da kusan kariya. Alkawalin da aka raba suna canzawa bisa nisa kuma suna da abokin kuɗi mai ƙarfi amma zasu iya watsawa lokacin dare.

Wane ne kuskuren washiyya don dadeyin shafukan polycarbonate?

Yi amfani da washiyya na pH neutral da aljibba na microfiber, kama da amfani da alkaliwai kamar acetone, kuma yin tabbatarwa zuwa biyu a shekara don gano alaƙa labarin.