Thermoplastic fiber enhanced composite material, preparation method and application

Abstract

The invention belongs to the field of materials, and in particular relates to a thermoplastic fiber-reinforced composite material, a preparation method and application of the material, and a method for preparing a case shell using the material as a raw material. The thermoplastic fiber reinforced composite material of the present invention includes thermoplastic fiber fabric and thermoplastic resin. Using the thermoplastic fiber-reinforced prepreg/sheet provided by the present invention to prepare the casing of a case can greatly improve the strength and impact resistance of the case compared with the traditional hard case. The thickness of the shell is reduced to reduce the weight of the luggage itself. Compared with the traditional hard box, it can reduce the weight by about 40%, and greatly improves the impact resistance of the luggage, reducing the damage of the luggage during use and consignment. Compared with traditional soft cases, it solves the shortcomings of soft cases and bags that are not pressure-resistant and waterproof, and leather cases are easy to be scratched and damaged, and are difficult to repair or have high repair costs.

Description

technical field [0001] The invention belongs to the field of materials, and in particular relates to a thermoplastic fiber reinforced composite material, a preparation method and application of the material, and a method for preparing a case and bag shell by using the material as a raw material. Background technique [0002] Composite materials are composed of two or more materials with different properties through physical or chemical methods to form materials with new properties on the macro (micro) level. Various materials complement each other in performance, resulting in a synergistic effect, so that the comprehensive performance of the composite material is better than that of the original material to meet various requirements. Compared with traditional metal materials, composite materials have the following advantages: [0003] (1) High specific strength and high specific modulus can achieve obvious weight loss effect; [0004] (2) Strong designability; [0005] (3...

AI Technical Summary

Problems solved by technology

For the application of thermoplastic resins in composite materials, the main problem is the high molding temperature of high-performance thermoplastic resins; on the other hand, the interface between thermoplastic resins and fiber fabrics. Sizing agent for thermosetting resin matrix, this kind of sizing agent is not suitable for thermoplastic resin and will have the effect of increasing defect reduction performance

[0013] The products made of the composite materials disclosed in the above documents have the following disadvantages: the textile fabric is used as the outer layer and the ABS material is used as the inner layer, and the contact parts of the two are easy to crack due to poor bonding.

[0015] The disadvantages of the materials and methods disclosed in the above documents are: the reinforcement fibers are discontinuous, the surface of the product is not beautiful, and due to the discontinuity of the fibers, the performance of the reinforcement fibers cannot be fully exerted, and the mechanical properties and impact properties of the material cannot be obtained. However, the mechanical properties and impact properties of continuous fiber reinforced composites are very different from those of continuous fiber reinforced composites.

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