Ƙarfafa Ƙarfafa Filastik(FRP Reinforcement) sannu a hankali yana maye gurbin ƙarfafa ƙarfin ƙarfe na gargajiya a aikin injiniyan farar hula saboda nauyi, ƙarfinsa mai ƙarfi da kaddarorin juriya. Duk da haka, abubuwan muhalli iri-iri suna shafar dorewarta, kuma ana buƙatar la'akari da mahimman abubuwa masu zuwa da matakan magancewa:
1. Danshi da muhallin ruwa
Tsarin tasiri:
Danshi yana shiga cikin ma'auni yana haifar da kumburi da raunana haɗin haɗin fiber-substrate interface.
Hydrolysis na gilashin fibers (GFRP) na iya faruwa tare da gagarumin asarar ƙarfi; carbon fibers (CFRP) ba su da tasiri sosai.
Rike da busassun hawan keke yana haɓaka haɓaka microcrack, yana haifar da delamination da debonding.
Matakan kariya:
Zaɓi ƙananan resins na hygroscopicity (misali vinyl ester); rufin ƙasa ko maganin hana ruwa.
Fi son CFRP a cikin yanayi mai ɗanɗano na dogon lokaci.
2. Zazzabi da hawan keke
Babban tasirin zafi:
Resin matrix yana yin laushi (sama da zafin canjin gilashi), yana haifar da raguwar tauri da ƙarfi.
Babban zafin jiki yana haɓaka hydrolysis da halayen iskar shaka (misaliAramid fiberAFRP yana da saukin kamuwa da lalacewar thermal).
Tasirin ƙananan zafin jiki:
Matrix embrittlement, mai yiwuwa ga micro-cracking.
Keke mai zafi:
Bambanci a cikin ƙididdiga na haɓakar haɓakar zafin jiki tsakanin fiber da matrix yana haifar da tarin damuwa na tsaka-tsakin fuska da kuma haifar da ƙaddamarwa.
Matakan kariya:
Zaɓin resins masu jure zafin zafin jiki (misali bismaleimide); inganta fiber / substrate thermal wasa.
3. Ultraviolet (UV) radiation
Tsarin tasiri:
UV yana haifar da ɗaukar hoto-oxidation na guduro, wanda ke haifar da alli, ƙwanƙwasa da ƙara ƙarar ƙararrawa.
Yana haɓaka kutsawa na danshi da sinadarai, yana haifar da lalatawar haɗin gwiwa.
Matakan kariya:
Ƙara masu ɗaukar UV (misali titanium dioxide); rufe saman tare da kariya mai kariya (misali polyurethane shafi).
dubawa akai-akaiAbubuwan FRPa cikin wuraren fallasa.
4. Sinadarin lalata
Yanayin acidic:
Rushewar tsarin silicate a cikin filayen gilashin (GFRP m), yana haifar da karyewar fiber.
Mahalli na alkaline (misali magudanar ruwa):
Yana lalata cibiyar sadarwar siloxane na GFRP fibers; resin matrix iya saponify.
Carbon fiber (CFRP) yana da kyakkyawan juriya na alkali kuma ya dace da sifofin kankare.
Wurin fesa gishiri:
Shigar da sinadarin Chloride ion yana haɓaka lalatawar fuska kuma yana aiki tare da zafi don ƙara lalata aiki.
Matakan kariya:
Zaɓin filaye masu juriya na sinadarai (misali, CFRP); ƙari na filaye masu jure lalata ga matrix.
5. Daskare-narke hawan keke
Tsarin tasiri:
Danshi mai shiga cikin microcracks yana daskarewa kuma yana faɗaɗa, yana haɓaka lalacewa; maimaita daskarewa da narkewa yana haifar da tsagewar matrix.
Matakan kariya:
Sarrafa abin sha ruwa; yi amfani da matrix resin mai sassauƙa don rage ɓarnar ɓarna.
6. Dogon loading da creep
Tasirin lodi a tsaye:
Rarraba matrix na resin yana haifar da sake rarraba damuwa da zaruruwa suna fuskantar manyan lodi, wanda zai iya haifar da karaya.
AFRP yana ratsawa sosai, CFRP yana da mafi kyawun juriya.
Yin lodi mai ƙarfi:
Load ɗin gajiya yana haɓaka haɓaka microcrack kuma yana rage rayuwar gajiya.
Matakan kariya:
Ba da izini don mafi girma aminci factor a cikin ƙira; fi son CFRP ko manyan filayen modulus.
7. Haɗe-haɗen mahalli
Halin yanayi na ainihi (misali, mahalli na ruwa):
Danshi, fesa gishiri, canjin zafin jiki da kayan aikin injina suna aiki tare don rage girman rayuwa.
Dabarun mayar da martani:
Multi-factor hanzarta gwajin gwajin tsufa; tsara tanadin muhalli rangwame factor.
Takaitawa da Shawarwari
Zaɓin Abu: Nau'in fiber da aka fi so bisa ga muhalli (misali CFRP kyakkyawan juriya na sinadarai, GFRP ƙananan farashi amma yana buƙatar kariya).
Ƙirar kariya: murfin ƙasa, maganin rufewa, ingantaccen tsarin guduro.
Kulawa da kulawa: ganowa na yau da kullun na ƙananan ƙwayoyin cuta da lalata aiki, gyara lokaci.
A karko naFRP ƙarfafawayana buƙatar tabbatarwa ta hanyar haɗin haɓaka kayan aiki, ƙirar tsari da kimanta daidaita yanayin muhalli, musamman a cikin matsanancin yanayi inda ake buƙatar tabbatar da aikin na dogon lokaci a hankali.
Lokacin aikawa: Afrilu-02-2025
