A fiber fabric reinforced polyaryletherketone resin-based prepreg, preparation method and application thereof
A technology of polyaryletherketone and fiber fabrics, which is applied in the field of resin-based composite materials, can solve the problems of poor interfacial properties of composite materials and low technical level requirements, reduce operating procedures, ensure connection quality, and reduce equipment and equipment operating costs Effect
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Embodiment 1
[0034] (1) Under high-speed stirring conditions, dissolve ketimine polyetheretherketone (KI-PEEK) in tetrahydrofuran (THF) to prepare a density of 0.987g / cm 3 polymer solution;
[0035](2) Use a polypropylene brush to dip the polymer solution obtained in step (1) to brush the surface of the carbon fiber plain weave fabric in one direction, and then use a brush to dip the polymer solution from the end of the first brushing to the carbon fiber plain weave. The surface of the fabric is brushed until the end of the first brushing start point, and the carbon fiber plain weave fabric coated with the polymer solution is dried at 120°C for 5 hours to obtain a KI-PEEK carbon fiber plain weave fabric;
[0036] (3) Mix the aqueous hydrochloric acid solution with a concentration of 1mol / L and THF according to the volume ratio of 1:10 to obtain a protonic acid-water-organic solvent mixed solution, and then spray the mixed solution on the carbon fiber plain weave fabric obtained in step (2)...
Embodiment 2
[0039] (1) Dissolve 88.56g of ketimine-type polyetheretherketone (KI-PEEK) in 208mL THF under high-speed stirring conditions to prepare a density of 1.187g / cm 3 221mL of polymer solution;
[0040] (2) The polymer solution obtained in step (1) is sprayed on a fiber volume of 113 cm along a non-overlapping path 3 The surface of the carbon fiber plain weave fabric is completely sprayed on the surface of the fabric and then dried at 120°C for 5 hours to obtain a KI-PEEK carbon fiber plain weave fabric;
[0041] (3) The trifluoroacetic acid aqueous solution and N,N-dimethylformamide (DMF) with a concentration of 10mol / L are mixed according to a volume ratio of 2:5 to obtain a protonic acid-water-organic solvent mixed solution, and the The mixed solution is sprayed on the surface of the KI-PEEK carbon fiber plain weave fabric obtained in step (2), and after being hydrolyzed for 12 hours, it is washed with deionized water and dried to obtain a PEEK carbon fiber plain weave fabric Cl...
Embodiment 3
[0044] (1) Under the condition of high-speed stirring, 79.70g of ketimine type polyetheretherketone (KI-PEEK) was dissolved in THF to prepare a density of 1.187g / cm 3 polymer solution;
[0045] (2) will 0.1m 2 A stainless steel plate placed on a fiber volume of 113cm 3 In the center of the surface of the carbon fiber plain weave fabric, spray the polymer solution obtained in step (1) on the surface of the fiber fabric outside the stainless steel plate cover along a non-overlapping path, and after the surface of the fabric is completely sprayed, dry it at 120°C for 5 hours Obtain KI-PEEK carbon fiber plain weave fabric;
[0046] (3) Aqueous sulfuric acid with a concentration of 15mol / L and N,N-dimethylacetamide (DMAc) are mixed according to a volume ratio of 2:5 to obtain a protonic acid-water-organic solvent mixed solution, and the step (2 The KI-PEEK carbon fiber plain weave fabric obtained in ) was quickly immersed in the protonic acid-water-organic solvent mixed solution...
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