Microwave curing forming method for carbon fiber composite material of rotary cylinder structure
A technology of rotating cylinders and composite materials, which is applied in the field of automatic forming of composite materials. It can solve the problems of accelerating heat exchange between molds and composite materials, generating thermal gradients, and head-to-tail temperature differences, so as to reduce manufacturing costs, shorten manufacturing cycles, and ensure reliability. sexual effect
Pending Publication Date: 2021-05-28
NANJING CHENGUANG GRP
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Problems solved by technology
Composite materials produced by the autoclave process have low porosity and high fiber content
However, the autoclave process mainly depends on the continuous circulation of the air in the tank to accelerate the heat exchange between the mold and the composite material, and use heat conduction to heat and solidify the composite material, which inevitably produces a thermal gradient.
The temperature of the cans on the windward side rises and cools faster, and the temperature of the tail of the leeward side rises and cools slowly. For large-sized composite components, there will be a huge temperature difference between the head and the tail.
This leads to non-uniform cure and composite cure residual deformation which is difficult to predict and control resulting in lower yields
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[0022] In order to solve some problems such as long period, large degree of curing deformation and high cost of the composite material of the rotary cylinder structure in the molding process, the present invention adopts microwave curing technology to solidify and form the composite material of the rotary cylinder structure, a rotary cylinder structure A microwave curing molding method for carbon fiber composite materials, comprising the following steps:
[0023] Step 1: From the aspects of technical requirements and economy, use glass fiber composite materials to manufacture the wave-transparent mold of the rotating cylinder structure;
[0024] Step 2: Select T300 carbon fiber high temperature epoxy resin prepreg for laying, import the model of the known rotating cylinder structure into the laying software, generate the correct trajectory code and input it into the computer; T300 carbon fiber high temperature epoxy resin prepreg The dipping material passes through the three s...
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The invention discloses a microwave curing forming method for a carbon fiber composite material of a rotary cylinder structure. The microwave curing forming method comprises the following steps: 1, manufacturing a wave-transparent mold of the rotary cylinder structure by adopting a glass fiber composite material; 2, importing a mold of the rotary cylinder structure into laying software, generating a correct track code, and inputting the correct track code into a computer; through three steps of feeding, cutting and yarn stopping of a laying head, selecting and continuously laying T300 carbon fiber high-temperature epoxy resin prepreg on the wave-transparent mold of the rotary cylinder structure according to a preset track; 3, adopting a vacuum bag pressing method for pre-compaction; 4, fastening a vacuumized and pre-compacted carbon fiber prefabricated member of the rotary cylinder together with a glass fiber composite material wave-transparent mold by using bolts; and 5, putting into a microwave tank for microwave curing. The method ensures the reliability of microwave curing process parameters.
Description
technical field [0001] The invention relates to the field of automatic forming of composite materials, in particular to a microwave curing forming method for carbon fiber composite materials with a rotary cylinder structure. Background technique [0002] Carbon fiber composite materials have light weight, high specific strength and specific modulus, good fatigue resistance and corrosion resistance, and have been widely used in the aerospace field. Among them, more and more shell-based products are made of carbon fiber composite materials. , can significantly reduce the weight of the shell. For large and complex carbon fiber composite components, the traditional molding process is mainly based on automatic lay-up molding technology and autoclave curing technology. Due to the autoclave process, the composite material has low porosity and high fiber content. However, the autoclave process mainly depends on the continuous circulation of the air in the tank to accelerate the he...
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IPC IPC(8): B29C70/34B29C35/08
CPCB29C70/342B29C35/0805B29C2035/0855
Inventor 褚奇奕窦明月胡伟叶宛静仲晓春
Owner NANJING CHENGUANG GRP