Resin transfer molding (RTM) method for composite blade
A molding method and composite material technology, applied in the field of resin matrix composite material liquid molding, can solve the problems of less structural interweaving points, structural stability, prefabricated body slip, blade structural deformation, etc. The degree of displacement and the effect of increasing the injection speed
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[0054] Example 1:
[0055] The blade prefab 10 is a 2.5D woven structure fan blade prefab with variable thickness, the material is CCF800, and the fiber volume content of the material is 55%±3%; CCF800 is a T800 grade carbon fiber fabric with a specification of 12K produced by Shandong Weihai Development Co., Ltd. , The resin for injection adopts PR520 high-toughness liquid molding resin of CYTEC Company, the outer dimension of the blade body 1 is: 750mm×300mm (length×width), the outer dimension of the blade preform is 800mm×340mm (length×width), the blade prefabricated There is a 20mm margin around the body, and the specific molding steps are as follows:
[0056] 1) Blade 1 is composed of blade body 11 and blade margin area 12, blade margin area 12 is composed of blade tenon margin area 13 and blade edge margin area 14, and blade prefab 10 is the intermediate body before RTM molding of blade 1;
[0057] 2) The forming die 4 is processed from a P20 metal blank, the forming di...
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[0067] Example 2:
[0068] The blade preform 10 is a fan blade preform with variable thickness 2.5D woven structure, the material is T700, and the fiber volume content of the material is 58%±3%; wherein T700 is a T700 grade carbon fiber fabric with a specification of 12K produced by Toray Company in Japan , The injection resin adopts ACTECH1304 high-toughness liquid molding resin of AVIC Composite Materials Co., Ltd., the outer dimension of the blade body 1 is: 720mm × 260mm (length × width), and the outer dimension of the blade preform is 780mm × 320mm (length × width) ), leaving a margin of 30mm around the blade preform. The specific molding steps are as follows:
[0069] 1) Blade 1 is composed of blade body 11 and blade margin area 12, blade margin area 12 is composed of blade tenon margin area 13 and blade edge margin area 14, and blade prefab 10 is the intermediate body before RTM molding of blade 1;
[0070] 2) The forming die 4 is processed from a P20 metal blank, the ...
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