It is used to manufacture windshields, cockpit covers, portholes and observation windows of aircraft.early stageThe cockpit cover of the aircraft is made of glass or celluloid board, which was adopted in the late 1930sorganic glass, i.eAcrylatePlastic.After the 1950s, directional perspex with good toughness, craze resistance and crack growth resistance was mostly used.
Scope of application
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For aircraft with a flight speed greater than Mach 2.3, the windshield and canopy must withstand a great deal of aerodynamic heating, which requiresHot deformation temperatureTransparent materials with higher toughness and stronger impact resistance, such aspolycarbonate。ordinarySilicate glassIt is heat-resistant and wear-resistant, but brittle and fragile, so most aircraft are treated by physical or chemical methodsTempered glass。Tempered glass, oriented plexiglass orPolycarbonate plasticWith soft and sticky film sandwiched in the middle, multi-layer composite transparent glass material is made, which can be bulletproof and antiBird strike, which is used as the anti bird impact windshield of aircraft.The windshields and observation windows of manned spaceships, space shuttles and artificial satellites adopt a double-layer composite structure, that is, they are made ofHigh silica glassorquartz glassAs a thermal barrier layer, it is strengthened by chemical with good thermal stability and high strengthAluminosilicate glassAs the bearing layer.
