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Fiber reinforced resin composite material, preparation method and applications thereof

A fiber-reinforced resin and composite material technology, which is applied in the field of fiber-reinforced resin composite material preparation, can solve the problems of damage to the properties of organic fibers, high rigidity of impregnated tapes, and increased injection molding costs, and achieves high mechanical properties, improved interfacial adhesion, The effect of improving the bonding performance

Active Publication Date: 2016-02-10
江苏南创化学与生命健康研究院有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Chinese patent CN102775622A disclosed a preparation method and application of a fiber-reinforced thermoplastic composite material on 2012-11-14. The fiber-reinforced thermoplastic composite material of this patent is formed by a weaving process to obtain a composite material with a three-dimensional structure. High rigidity, but due to the high temperature required for the resin molding process, the cost of injection molding will also increase, and if organic fibers are used as reinforcement materials, the performance of organic fibers will be damaged
In addition, the Chinese patent CN102775622A directly weaves the fibers after impregnating and cooling them in the resin, and the obtained impregnated tape has high rigidity, which will bring certain difficulties to the weaving

Method used

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  • Fiber reinforced resin composite material, preparation method and applications thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Immerse the glass fibers in an ethanol solution to remove the surface oil of the fibers. The treatment time is 15 minutes. After degreasing, wash the fibers with deionized water and dry them. Then, immerse the glass fiber sample in concentrated nitric acid to reflux for 2 hours, rinse it with deionized water until neutral, dry it in the air, and dry it in a vacuum oven at 105°C. Then polypropylene and N-β(aminoethyl)-γ-aminopropyltrimethoxysilane are fully melted and mixed in a ratio of 15:1 and poured into the spray gun. The oxidized fibers are then passed through a spray chamber. The conveying speed of the fiber is 5m / min, the spraying pressure of the spray gun is 0.35MPa, and the spraying distance is 20cm. The sprayed fibers pass through continuous drying equipment at a drying temperature of 150°C for 3 minutes. The dried fibers are fed into the braiding machine for three-dimensional integral braiding and then put into the mold. Then, the resin filler is mixed uni...

Embodiment 2

[0030] Immerse the carbon fiber in an ethanol solution to remove the oil on the surface of the fiber. The treatment time is 15 minutes. After degreasing, wash and dry the fiber with deionized water. Then, soak the carbon fiber sample in acidic potassium permanganate and reflux for 3 hours, then rinse it with deionized water until it is neutral, dry it in the air, and dry it in a vacuum oven at 105°C. Then polyamide and γ-aminopropyltriethoxysilane are fully melted and mixed at a ratio of 15:1 and poured into the spray gun. The oxidized fibers are then passed through a spray chamber. The conveying speed of the fiber is 5m / min, the spraying pressure of the spray gun is 0.4MPa, and the spraying distance is 25cm. The sprayed fibers pass through continuous drying equipment at a drying temperature of 150°C for 3 minutes. The dried fibers are fed into the braiding machine for three-dimensional integral braiding and then put into the mold. Then, the resin filler is mixed uniformly ...

Embodiment 3

[0032]Immerse glass fibers and carbon fibers in an ethanol solution at a ratio of 1:1 to remove the surface oil of the fibers. The treatment time is 15 minutes. After degreasing, wash the fibers with deionized water and dry them. Then, soak the mixed fiber sample in the mixed solution of concentrated nitric acid and hypochlorous acid to reflux for 2 hours, then rinse it with deionized water until neutral, dry it in the air, and dry it in a vacuum oven at 105 °C. Then fully melt and mix polypropylene and γ-aminopropyltriethoxysilane at a ratio of 14:1, and pour them into the spray gun. The oxidized fibers are then passed through a spray chamber. The conveying speed of the fiber is 5m / min, the spraying pressure of the spray gun is 0.4MPa, and the spraying distance is 25cm. The sprayed fibers pass through continuous drying equipment at a drying temperature of 150°C for 3 minutes. The dried fibers are fed into the braiding machine for three-dimensional integral braiding and then...

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Abstract

The invention discloses a preparation method of a fiber reinforced resin composite material. The preparation method comprises the following steps: subjecting the fibers, which have been subjected to a surface oxidization treatment, to a coating treatment; subjecting the fibers, which have been subjected to the coating treatment, to three-dimensional knitting according to a required shape; placing the knitted three-dimensional textile into a mould, pouring thermosetting resin into the mould, and carrying out low-temperature injection moulding. According to the preparation method, a three-dimensional textile is taken as the skeleton, and thermosetting resin is taken as the filling material. The preparation method is characterized in that the processing temperature is low (not higher than 160 DEG C), the obtained three-dimensional composite material has a high mechanical strength in the vertical direction and in the horizontal direction; and moreover, due to the existence of the three-dimensional textile framework, the impact-resistant and anti-knock performances of the composite material are greatly improved. A fiber reinforced resin composite material prepared by the provided preparation method is also disclosed. The composite material can be used to produce the battery tank of electric vehicle.

Description

technical field [0001] The present invention relates to a preparation method of a fiber-reinforced resin composite material with high mechanical properties and high impact resistance; in addition, the present invention also relates to the fiber-reinforced resin composite material and the application of the fiber-reinforced resin composite material prepared by the aforementioned preparation method. Background technique [0002] The battery boxes of electric vehicles have always been made of metal boxes that are easy to form, but the metal boxes are too bulky and have low corrosion resistance, which brings great problems to practical applications. With the continuous development of injection molding technology, people began to turn their attention to resin materials. For example, FRANKFURT, Germany (December 20, 2011) Battery cases for electric vehicles (EVs) used to be made of metal. Today, thermoplastic and thermoset battery cases are being developed, while thermoplastic bat...

Claims

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Application Information

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IPC IPC(8): C08J5/06C08L61/06C08L63/00C08L67/06C08L61/00C08L83/04C08L61/28C08K9/02C08K9/04C08K9/06C08K7/00C08K7/14C08K7/06C08K3/04
Inventor 邹湘坪李晓强王全胜
Owner 江苏南创化学与生命健康研究院有限公司
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