Super-large tow carbon fiber and preparation method thereof, continuous fiber reinforced resin matrix composite material and wind turbine blade
A technology for reinforcing resin-based and composite materials, which is applied in the fields of ultra-large tow carbon fiber and its preparation, continuous fiber-reinforced resin-based composite materials and wind turbine blades. Reduced effect
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Embodiment 1
[0051] Preparation of super large tow continuous carbon fiber:
[0052] (1) will be purchased in the market (Derong) L900 civil acrylic fiber is soaked in ethylenediamine solution at room temperature, taken out after 5 hours and dried at 60°C. Drying time is 2h, obtains pretreated civil acrylic fiber;
[0053] (2) Place the pretreated civilian acrylic fiber in the air atmosphere for preoxidation, and the preoxidation temperature is 200°C. The pre-oxidation time is 2h, and then it is placed in a nitrogen gas atmosphere for carbonization, the carbonization temperature is 1000°C, and the carbonization time is 15min, to obtain super large tow continuous carbon fibers.
[0054] Preparation of continuous fiber reinforced resin matrix composites:
[0055] Take 100kg of super large tow continuous carbon fiber 12 and hang it on the creel. At the same time, glass fiber 9 and boron fiber 10 are also hung on different rollers of the creel respectively. Appropriate drafting force is ap...
Embodiment 2
[0060] Preparation of super large tow continuous carbon fiber:
[0061] (1) Civil acrylic fibers to be purchased from Derong Company (Derong) L900 is soaked in ammonium acetate solution at 10°C, taken out after 10h and dried at 30°C. Drying time is 4h, obtains pretreated civil acrylic fiber;
[0062] (2) Place the pretreated civilian acrylic fiber in the air atmosphere for preoxidation, and the preoxidation temperature is 250°C. The oxidation time was 1.5 h, and then it was placed in a nitrogen gas atmosphere for carbonization at a carbonization temperature of 800° C. and a carbonization time of 10 min to obtain super large tow continuous carbon fibers.
[0063] Preparation of continuous fiber reinforced resin matrix composites:
[0064] The super large tow continuous carbon fiber and glass fiber are mixed and woven into a single-layer hybrid fabric, and then the multi-layer hybrid fabric is evenly laid in the main beam mold one by one, introduced into the resin matrix und...
Embodiment 3
[0066] Preparation of super large tow continuous carbon fiber:
[0067] (1) Civil acrylic fibers to be purchased from Derong Company (Derong) L900 is immersed in the triethylamine solution at 100°C, and taken out after 1 hour to dry, the drying temperature is 100°C. Drying time is 1h, obtains pretreated civil acrylic fiber;
[0068] (2) Place the pretreated civilian acrylic fiber in the air atmosphere for preoxidation, and the preoxidation temperature is 300°C. The pre-oxidation time is 10 minutes, and then it is placed in a nitrogen gas atmosphere for carbonization. The carbonization temperature is 1700 ° C, and the carbonization time is 1 minute to obtain super large tow continuous carbon fibers.
[0069] Preparation of continuous fiber reinforced resin matrix composites:
[0070] The super-large tow continuous carbon fiber is evenly laid on the resin matrix film to make a carbon fiber prepreg. Then lay the multi-layer carbon fiber prepreg in the main girder mold sequen...
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Abstract
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