iindaba

I-Fiberglass Reinforced Polymer (GFRP)sisixhobo esisebenza kakuhle kakhulu esidityaniswe kwimicu yeglasi njenge-ejenti yokuqinisa kunye ne-polymer resin njenge-matrix, kusetyenziswa iinkqubo ezithile. Ulwakhiwo lwayo oluphambili luqulathe imicu yeglasi (efanaIglasi ye-elektroniki, i-S-glass, okanye i-AR-glass enamandla aphezulu) enobubanzi obuyi-5∼25μm kunye nee-thermosetting matrices ezifana ne-epoxy resin, i-polyester resin, okanye i-vinyl ester, ene-fiber volume fraction edla ngokufikelela kwi-30%∼70% [1-3]. I-GFRP ibonisa iipropati ezintle ezifana namandla athile adlula i-500 MPa/(g/cm3) kunye ne-modulus ethile edlula i-25 GPa/(g/cm3), ngelixa ikwaneempawu ezifana nokumelana nokugqwala, ukumelana nokudinwa, i-coefficient ephantsi yokwandiswa kobushushu [(7∼12)×10−6 °C−1], kunye nokucaca kwe-electromagnetic.

Kwicandelo leenqwelo-moya, ukusetyenziswa kwe-GFRP kwaqala ngeminyaka yoo-1950 kwaye ngoku kube yinto ebalulekileyo ekunciphiseni ubunzima besakhiwo kunye nokuphucula ukusebenza kakuhle kwepetroli. Ukuthatha iBoeing 787 njengomzekelo, i-GFRP ibandakanya i-15% yezakhiwo zayo ezingezizo eziphambili ezithwala umthwalo, ezisetyenziswa kwizinto ezifana neefairing kunye nee-winglets, zifikelela ekunciphiseni ubunzima be-20% ~ 30% xa kuthelekiswa nee-alloys ze-aluminium zendabuko. Emva kokuba imiqadi yomgangatho wekhabhinethi ye-Airbus A320 ithatyathelwe indawo yi-GFRP, ubunzima benxalenye enye yehla nge-40%, kwaye ukusebenza kwayo kwiindawo ezifumileyo kuphucuke kakhulu. Kwicandelo leenqwelo-moya, iiphaneli zangaphakathi zekhabhinethi ye-Sikorsky S-92 zisebenzisa isakhiwo sesandwich se-GFRP honeycomb, zifikelela kwibhalansi phakathi kokuxhathisa impembelelo kunye nokungawi komlilo (ukuthobela umgangatho we-FAR 25.853). Xa kuthelekiswa neCarbon Fiber Reinforced Polymer (CFRP), ixabiso lezinto eziluhlaza zeGFRP lincitshiswa ngama-50% ~ 70%, nto leyo enika inzuzo enkulu kwezoqoqosho kwiindawo ezingezizo eziphambili ezithwala umthwalo. Okwangoku, iGFRP yenza inkqubo yesicelo se-gradient yezinto eziphathekayo ene-carbon fiber, ekhuthaza uphuhliso oluphindaphindeneyo lwezixhobo ze-aerospace ukuya ekukhanyiseni, ubomi obude, kunye neendleko eziphantsi.

Ngokwembono yeempawu zomzimba,I-GFRPIkwanazo neenzuzo ezibalaseleyo ngokubhekiselele ekukhanyiseni, kwiimpawu zobushushu, ukumelana nokugqwala, kunye nokusebenza kakuhle. Ngokuphathelele ukukhanyisa, uxinano lwefayibha yeglasi luqala kwi-1.8∼2.1 g/cm3, eyi-1/4 kuphela yentsimbi kunye ne-2/3 ye-aluminium alloy. Kwiimvavanyo zokuguga ezishushu kakhulu, izinga lokugcina amandla lidlule kwi-85% emva kweeyure ezili-1,000 kwi-180 °C. Ngaphezu koko, i-GFRP efakwe kwisisombululo se-NaCl se-3.5% unyaka wonke ibonise ukulahleka kwamandla okungaphantsi kwe-5%, ngelixa intsimbi ye-Q235 yayinokulahleka kobunzima bomhlwa kwe-12%. Ukumelana kwayo ne-asidi kuyabonakala, kunye nezinga lokutshintsha kobunzima elingaphantsi kwe-0.3% kunye nezinga lokukhulisa umthamo elingaphantsi kwe-0.15% emva kweentsuku ezingama-30 kwisisombululo se-HCl se-10%. Iisampulu ze-GFRP eziphathwe nge-silane zigcine izinga lokugcina amandla okugoba elingaphezulu kwe-90% emva kweeyure ezingama-3,000.

Ngamafutshane, ngenxa yokudibanisa kwayo iipropati ezahlukeneyo, i-GFRP isetyenziswa kakhulu njengesixhobo esiphambili seenqwelo-moya esisebenza kakuhle kuyilo nasekwenziweni kweenqwelo-moya, ibambe ukubaluleka okukhulu kwishishini leenqwelo-moya zanamhlanje kunye nophuhliso lobuchwepheshe.