iindaba

I-Fiberglass eyomeleziweyo iPolymer (GFRP)yinto ephezulu yokusebenza ehlanganiswe kwimicu yeglasi njenge-ejenti yokuqinisa kunye ne-polymer resin njenge-matrix, usebenzisa iinkqubo ezithile. Ubume bayo obuphambili bunemicu yeglasi (efana neIglasi ye-E, i-S-glass, okanye i-AR-glass ye-high-high) ene-diameter ye-5∼25μm kunye ne-thermosetting matrices njenge-epoxy resin, i-polyester resin, okanye i-vinyl ester, kunye neqhekeza le-fiber volume ngokuqhelekileyo lifikelela kwi-30% ~ 70% [1-3]. I-GFRP ibonisa iipropati ezigqwesileyo njengamandla athile angaphezu kwe-500 MPa / (g / cm3) kunye nemodyuli ethile edlula i-25 GPa / (g / cm3), ngelixa ineempawu ezifana nokuxhathisa ukubola, ukumelana nokudinwa, i-coefficient ephantsi yokwandiswa kwe-thermal [(7-12) × 10-6 pare, i-electro-C-C.

Kwintsimi ye-aerospace, ukusetyenziswa kwe-GFRP kwaqala ngo-1950 kwaye ngoku kuye kwaba yinto ebalulekileyo yokunciphisa ubunzima besakhiwo kunye nokuphucula ukusebenza kakuhle kwamafutha. Ukuthatha i-Boeing 787 njengomzekelo, i-GFRP ibala i-15% yezakhiwo zayo ezingezona eziphambili zomthwalo, ezisetyenziswe kumacandelo afana ne-fairings kunye namaphiko, ukufezekisa ukunciphisa ubunzima be-20% ~ 30% xa kuthelekiswa ne-alloys ye-aluminium yendabuko. Emva kokuba imiqadi yomgangatho wekhabhinethi ye-Airbus A320 itshintshwe nge-GFRP, ubunzima becandelo elinye lehle nge-40%, kwaye ukusebenza kwayo kwiindawo ezifumileyo kuphuculwe kakhulu. Kwicandelo le-helicopter, iipaneli zangaphakathi ze-Sikorsky S-92's cabin zisebenzisa isakhiwo se-sandwich ye-honeycomb ye-GFRP, ukuphumeza ukulingana phakathi kokuchasana kwempembelelo kunye nokutshatyalaliswa komlilo (ngokuthobela umgangatho we-FAR 25.853). Xa kuthelekiswa neCarbon Fiber Reinforced Polymer (CFRP), ixabiso le-raw material ye-GFRP lincitshiswe nge-50% ~ 70%, libonelela ngenzuzo enkulu yezoqoqosho kumacandelo angewona angundoqo. Okwangoku, i-GFRP yenza inkqubo yesicelo se-gradient ye-material ene-carbon fiber, ikhuthaza uphuhliso oluphindaphindiweyo lwezixhobo ze-aerospace ekukhanyeni, ubomi obude, kunye neendleko eziphantsi.

Ngokwembono yeempawu zomzimba,GFRPikwanezinto eziluncedo ezibalaseleyo ngokwemigaqo yokukhanya, iipropathi zobushushu, ukuxhathisa ukubola, kunye nokusebenza. Ngokumalunga nokulula, ubuninzi be-fiber yeglasi ukusuka kwi-1.8∼2.1 g / cm3, eyi-1/4 kuphela yentsimbi kunye ne-2/3 ye-aluminium alloy. Kuvavanyo lokuguga oluphezulu, izinga lokugcina amandla lidlule kwi-85% emva kweeyure ze-1,000 kwi-180 °C. Ngaphezu koko, i-GFRP igxininiswe kwisisombululo se-3.5% se-NaCl sonyaka omnye ibonise ukulahlekelwa kwamandla ngaphantsi kwe-5%, ngelixa i-Q235 yensimbi yayinokulahleka kwesisindo se-12%. Ukuxhatshazwa kwayo kwe-asidi kuvelele, kunye nezinga lokuguqulwa kobuninzi lingaphantsi kwe-0.3% kunye nesantya sokwandisa umthamo ophantsi kwe-0.15% emva kweentsuku ze-30 kwisisombululo se-HCl se-10%. Imizekelo ye-GFRP enyangwe ngeSilane igcine izinga logcino lwamandla agobileyo elidlula i-90% emva kweeyure ezingama-3,000.

Ngamafutshane, ngenxa yendibaniselwano eyodwa yeepropathi, i-GFRP isetyenziswa ngokubanzi njengesixhobo se-aerospace esisebenza kakhulu ekuyilweni nasekuveliseni inqwelo-moya, ibambe ukubaluleka kobuchule kushishino lwangoku lwe-aerospace kunye nophuhliso lobuchwepheshe.