izindaba

I-Fiberglass Reinforced Polymer (GFRP)iyinto esebenza kahle kakhulu ehlanganiswe emicu yengilazi njenge-ejenti eqinisayo kanye ne-polymer resin njenge-matrix, kusetshenziswa izinqubo ezithile. Isakhiwo sayo esiyinhloko siqukethe imicu yengilazi (njengeIngilazi ye-E, S-glass, noma i-AR-glass enamandla amakhulu) enobubanzi obungu-5∼25μm kanye no-matrices we-thermosetting njenge-epoxy resin, i-polyester resin, noma i-vinyl ester, enengxenye yevolumu ye-fiber ngokuvamile efinyelela ku-30% ~70% [1-3]. I-GFRP ibonisa izinto ezinhle kakhulu njengamandla athile angaphezu kuka-500 MPa/(g/cm3) kanye nemodulus ethize eyeqa u-25 GPa/(g/cm3), kuyilapho inezici ezifana nokumelana nokugqwala, ukumelana nokukhathala, i-coefficient ephansi yokunwetshwa kwe-thermal [(7∼12)×10−6°Cpare,electro-C.C.

Emkhakheni we-aerospace, ukusetshenziswa kwe-GFRP kwaqala ngeminyaka yawo-1950 futhi manje sekuyinto ebalulekile yokunciphisa ubuningi besakhiwo kanye nokwenza ngcono ukusebenza kahle kukaphethiloli. Uma sithatha i-Boeing 787 njengesibonelo, i-GFRP ibala u-15% wezakhiwo zayo ezingathwali imithwalo eziyinhloko, ezisetshenziswa ezingxenyeni ezifana nama-fairing nama-winglets, okuzuza ukuncipha kwesisindo ngo-20%∼30% uma kuqhathaniswa nama-alloys e-aluminiyamu evamile. Ngemva kokuba imishayo yesitezi sekhabethe ye-Airbus A320 ithathelwe indawo i-GFRP, isisindo sengxenye eyodwa yehle ngo-40%, nokusebenza kwayo ezindaweni ezinomswakama kwaba ngcono kakhulu. Emkhakheni wendiza enophephela emhlane, amaphaneli angaphakathi ekhabetheni le-Sikorsky S-92's asebenzisa isakhiwo sesemishi lekhekheba lezinyosi le-GFRP, afinyelela ibhalansi phakathi kokumelana nomthelela kanye nokuncipha komlilo (okuhambisana ne-FAR 25.853 standard). Uma kuqhathaniswa ne-Carbon Fiber Reinforced Polymer (CFRP), izindleko zezinto ezingavuthiwe ze-GFRP zehliswa ngo-50% ~70%, okuhlinzeka ngenzuzo enkulu yezomnotho ezingxenyeni ezingathwali zomthwalo eziyinhloko. Njengamanje, i-GFRP yenza uhlelo lokusebenzisa i-gradient ye-material ene-carbon fiber, ekhuthaza ukuthuthukiswa okuphindaphindiwe kwemishini ye-aerospace maqondana nokukhanya, impilo ende, kanye nezindleko eziphansi.

Ngokombono wezakhiwo zomzimba,I-GFRPfuthi inezinzuzo ezivelele mayelana nokukhanya, izakhiwo ezishisayo, ukumelana nokugqwala, nokusebenza kahle. Ngokuphathelene nokwenza lula, ukuminyana kwefayibha yengilazi isukela ku-1.8∼2.1 g/cm3, okuwu-1/4 kuphela wensimbi no-2/3 wengxubevange ye-aluminium. Ezivivinyweni zokuguga ezisezingeni eliphezulu, izinga lokugcina amandla lidlule ama-85% ngemva kwamahora angu-1,000 ku-180 °C. Ngaphezu kwalokho, i-GFRP ecwiliswe ku-3.5% yesisombululo se-NaCl ngonyaka owodwa ibonise ukulahlekelwa kwamandla okungaphansi kuka-5%, kuyilapho i-Q235 yensimbi inesisindo sokulahlekelwa kwe-12%. Ukumelana kwayo ne-asidi kuvelele, ngesilinganiso sokushintsha okukhulu esingaphansi kuka-0.3% kanye nezinga lokunwetshwa kwevolumu eliphansi kune-0.15% ngemva kwezinsuku ezingu-30 kusixazululo se-HCl esingu-10%. Izifanekiso ze-GFRP eziphathwe nge-Silane zigcine izinga lokugcinwa kwamandla agobayo elidlula u-90% ngemva kwamahora angu-3,000.

Kafushane, ngenxa yenhlanganisela yayo eyingqayizivele yezakhiwo, i-GFRP isetshenziswa kabanzi njengento esebenza kakhulu ewumgogodla we-aerospace ekwakhiweni nasekukhiqizeni indiza, ebambe ukubaluleka kwamasu okubalulekile embonini yesimanje ye-aerospace kanye nokuthuthukiswa kobuchwepheshe.