High-density fiber cloth pack box material and preparation method thereof

Abstract

The invention discloses a high-density fiber cloth pack box material which comprises a plurality of layers of fiber cloth, and each layer of fiber cloth is formed by weaving a plurality of fiber filaments. The plurality of fiber yarns are divided into warp yarns and weft yarns, the warp yarns and the weft yarns are mutually staggered to form intersection points, and the warp yarns and the weft yarns alternately appear at two adjacent intersection points; the density in the warp direction is 10-16 monofilaments / cm, and the density in the weft direction is 10-16 monofilaments / cm; the density of the warp yarns is 150 tex-600 tex, and the density of the weft yarns is 150 tex-600 tex; and the weight per unit area of each layer of fiber cloth is 150-600g / m < 2 >. According to the high-density fiber cloth pack box material and the preparation method thereof, the weight of a battery pack box is effectively reduced, and the flame retardance, toughness and anti-collision capability of the battery pack box are improved.

Description

Technical Field

[0001] The present invention relates to the field of battery pack technology, and in particular to a flame-retardant and lightweight high-density fiber cloth pack box material for new energy vehicles and a preparation method thereof. Background Art

[0002] With the development of the times, more and more new energy vehicles are entering every household. As a key part of new energy vehicles, one of the most important properties of the battery pack box is high flame retardancy and safety; at the same time, lightweighting is an important direction of current automobile development and an important means of energy conservation and emission reduction. The lightweighting of the battery pack box is also an important way to increase the vehicle's cruising range.

[0003] At present, the battery pack boxes used in new energy vehicles mainly use traditional metal materials. Metal materials are heavy, which reduces the single weight energy density of the battery PACK system and directly affects the range of electric vehicles. In addition, metal materials used in battery boxes need to be insulated and fireproofed, coated with insulating coatings or added with insulating pads and insulating boards, or mica patch processing, which is complex and further increases the weight. In addition, the PCM process is used to prepare fiber-reinforced composite materials. The composite material pack box formed by molding has good insulation, light weight, and high tensile strength, which meets the flame retardant and lightweight requirements of the battery pack box of new energy vehicles. However, the fiber woven cloth currently used generally requires larger gaps to form a smooth surface for the molded product, which results in a lower density and modulus of the finished fiber composite material, thereby reducing the flame retardancy.

[0004] In view of the above factors, the present invention systematically improves the weaving parameters of the fiber woven cloth, the weaving process of the fiber multilayer structure and the molding process, thereby improving the modulus and flame retardant safety of the fiber reinforced composite material. Summary of the invention

[0005] The present invention provides a high-density fiber cloth pack box material and a preparation method thereof, which effectively reduces the weight of a battery pack box and improves the flame retardancy, toughness and impact resistance of the battery pack box.

[0006] To solve the above problems, the present invention adopts the following technical solutions:

[0007] A high-density fiber cloth packing material, comprising multiple layers of fiber cloth, each layer of fiber cloth is woven from multiple fiber threads; the multiple fiber threads are divided into warp threads and weft threads, the warp threads and weft threads are interlaced to form intersections, and the warp threads and weft threads appear alternately at two adjacent intersections; the density in the warp direction is 10-16 single threads / cm, and the density in the weft direction is 10-16 single threads / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex; the unit area weight of each layer of fiber cloth is 150-600g / m 2 .

[0008] In one embodiment, the fiber cloth comprises basalt fiber cloth.

[0009] In one embodiment, the fiber cloth further includes at least one of carbon fiber cloth and glass fiber cloth.

[0010] In one embodiment, the fiber cloth comprises a composite fiber cloth, and the composite fiber cloth is woven from at least two of basalt fiber filaments, glass fiber filaments and carbon fiber filaments.

[0011] In one embodiment, the thickness of each layer of fiber cloth is 0.15 mm-0.6 mm.

[0012] In one embodiment, the number of layers of the fiber cloth is 3-6.

[0013] In one embodiment, the diameter of the warp yarn is 7-24 microns, and the diameter of the weft yarn is 7-24 microns.

[0014] In one embodiment, the thickness of the high-density fiber cloth packing material is 0.3 cm-3 cm.

[0015] In addition, the present invention also provides a method for preparing the above-mentioned high-density fiber cloth packing material, comprising the following steps:

[0016] S1: preparing corresponding fiber filaments;

[0017] S2: The fiber filaments obtained in S1 are woven into a fiber cloth along the warp and weft directions, each warp and weft are interlaced to form a cross point, and the warp and weft appear alternately at two adjacent cross points; the density in the warp direction is 10-16 monofilaments / cm, and the density in the weft direction is 10-16 monofilaments / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex; the unit area weight of each layer of fiber cloth is 150-600g / m 2 ;

[0018] S3: pre-impregnating the fiber cloth obtained in S2 in resin to form a pre-impregnated cloth; wherein the mass ratio of the fiber cloth to the resin in the obtained pre-impregnated cloth is preferably 1.5:1-4:1.

[0019] S4: The prepreg obtained in S3 is subjected to cutting, preforming, rapid molding, and surface treatment processes, and then demolded to obtain a high-density fiber cloth packing box material.

[0020] In one embodiment, the high-density fiber cloth packing material obtained in S4 may be surface treated.

[0021] The high-density fiber cloth pack box material and preparation method thereof of the present invention obtain high-density pack box material by systematically improving the fiber cloth weaving parameters and the fiber cloth multi-layer structure, thereby greatly reducing the weight of the battery box and improving the battery energy density; at the same time, the prepreg and surface treatment processes are beneficial to improving the overall stiffness and density of the material, and the surface of the obtained product is dense and uniform without residual pores, thereby ensuring the stability of the battery box structure, and significantly improving the flame retardancy, toughness and impact resistance of the battery pack box. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic cross-sectional structure diagram of an embodiment of the high-density fiber cloth packing box material of the present invention.

[0023] Figure 2 It is a schematic diagram of the planar structure of an embodiment of a single-layer fiber cloth. DETAILED DESCRIPTION

[0024] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the high-density fiber cloth packing box material and the preparation method thereof of the present invention are further described in detail below in combination with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.

[0025] like Figure 1 and Figure 2 As shown, the present invention provides a high-density fiber cloth packing material (100), which includes multiple layers of fiber cloth (110, 120...1n0), each layer of fiber cloth (110, 120...1n0) is woven from multiple warp threads (112) and weft threads (114). Figure 2As shown, in the present invention, the black blocks represent the warp (112), and the white blocks represent the weft (114). Preferably, the present invention adopts a plain or twill weaving process for weaving, and the product obtained by the weaving process has good flatness and high density. In order to ensure the toughness and anti-collision performance of the final product, the thickness of each layer of fiber cloth (110, 120...1n0) is preferably 0.15mm-0.6mm; the number of layers of fiber cloth is preferably 3-6 layers, that is, 3≤n≤6.

[0026] The fiber yarns used for weaving are divided into warp yarns (112) and weft yarns (114) in the longitudinal and transverse directions. The warp yarns (112) and weft yarns (114) are interlaced to form intersections. The warp yarns (112) and weft yarns (114) appear alternately at two adjacent intersections. Figure 2 It is shown as black blocks and white blocks appearing alternately. In the present invention, the density in the warp direction (112) is 10-16 monofilaments / cm, and the density in the weft direction (114) is 10-16 monofilaments / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex. Under the process of the present invention, the warp (112) and the weft (114) can form a high-density intersection with small gaps and a firm structure, and a high-density product can be obtained, thereby greatly increasing the modulus of the product and improving the flame retardant performance. The unit area weight of each layer of fiber cloth (110, 120...1n0) in the present invention can reach 150-600g / m 2 Preferably, as an implementable method, the diameter of the warp yarn (112) is 7-24 microns, and the diameter of the weft yarn (114) is 7-24 microns. Under this process parameter, the density of the fiber cloth can be further improved, while maintaining a high flatness, thereby ensuring that the force distribution of the fiber cloth in all directions is uniform and improving product quality.

[0027] The high-density fiber cloth packing material (100) of the present invention can be formed by laminating multiple layers of fiber cloth of a single component, or by laminating multiple layers of composite fiber cloth, or by laminating a mixture of fiber cloth of a single component and composite fiber cloth. The fiber cloth of a single component refers to a fiber cloth woven from fiber filaments of the same component, and the composite fiber cloth refers to a fiber cloth woven from two or more fiber filaments.

[0028] As an implementation method, the high-density fiber cloth pack box material (100) is formed by laminating multiple layers of basalt fiber cloth, wherein each layer of basalt fiber cloth is woven from basalt fiber filaments. Basalt fiber has the characteristics of light weight, strong impact resistance, and strong toughness, which helps to reduce the weight of the pack box and improve the safety performance.

[0029] Preferably, the high-density fiber cloth packing material (100) is formed by laminating basalt fiber cloth, carbon fiber cloth and glass fiber cloth from bottom to top. This combination further optimizes the performance of the product, with higher toughness and better flame retardant properties. In addition, the high-density fiber cloth packing material (100) of the present invention can also be formed by laminating other fiber cloths, such as steel fiber cloth, titanium fiber cloth, mineral fiber cloth, etc.

[0030] As an implementation method, the high-density fiber cloth packing material (100) is formed by laminating multiple layers of composite fiber cloth, wherein the composite fiber cloth is woven from at least two of basalt fiber filaments, glass fiber filaments, carbon fiber filaments, steel fiber filaments, titanium fiber and mineral fiber filaments. The composite fiber cloth fully makes up for the shortcomings of single-component fiber cloth, is conducive to improving the rigidity and toughness of the material, and has excellent friction resistance and impact resistance.

[0031] As an implementation method, the thickness of the high-density fiber cloth pack box material (100) is 0.3 cm-3 cm. The pack box with this thickness has the characteristics of light weight, strong impact resistance, and strong toughness.

[0032] In addition, the present invention also provides a method for preparing the above-mentioned high-density fiber cloth packing material (100), comprising the following steps:

[0033] S1: Prepare corresponding fiber filaments. The fiber filaments may be basalt fiber filaments / glass fiber filaments / carbon fiber filaments / titanium fiber filaments / mineral fiber filaments / steel fiber filaments, etc. For example, basalt stone materials of suitable formula are melted at 1430°C to 1500°C in a pool kiln, and then drawn at high speed through a platinum-rhodium alloy drawing plate to form continuous fibers.

[0034] S2: The fiber filaments obtained in S1 are woven into a fiber cloth along the warp and weft directions, wherein each warp (112) and weft (114) are interlaced to form a cross point, and the warp (112) and weft (114) appear alternately at two adjacent cross points; the density in the warp (112) direction is 10-16 single filaments / cm, and the density in the weft (114) direction is 10-16 single filaments / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex; the unit area weight of each layer of fiber cloth is 150-600g / m 2 Among them, a single fiber cloth can be woven from a single fiber yarn, or a composite fiber cloth can be woven from two or more fiber yarns.

[0035] S3: pre-impregnating the fiber cloth obtained in S2 in resin to form a pre-impregnated cloth. In the obtained pre-impregnated cloth, the mass ratio of the fiber cloth to the resin is preferably 1:1-1.5:1. Under this ratio, both sufficient impregnation and a good impregnation film layer can be formed, thereby improving product performance.

[0036] S4: The prepreg obtained in S3 is cut, preformed, and rapidly molded, and then demolded to obtain the desired high-density fiber cloth packing box material (100). The process parameters of the rapid molding are: a pressing time of 3-10 minutes, a temperature of 120°C-180°C, and a pressure of 300t / m 2 -700t / m 2 .

[0037] Preferably, the preparation method of the present invention further comprises step S5: surface treating the demoulded high-density fiber cloth packing box material (100). As an implementation method, the high-density fiber cloth packing box material (100) obtained in S4 is subjected to high-temperature spraying of basalt powder at 1400-1500° C. using a spray gun to form a dense oxide film on its surface, thereby further improving the flame retardancy of the material. In addition, the material can also be surface treated by oxidation treatment / laser radiation improvement and other processes.

[0038] The pack box material prepared by the preparation method of the present invention has the characteristics of light weight, high rigidity, smooth and dense surface, etc., which significantly improves the flame retardancy, toughness and impact resistance of the battery pack box. In addition to being used in automobile pack boxes, the high-density fiber cloth pack box material (100) of the present invention can also be used for the lower protective bottom plate of new energy vehicle batteries, which can effectively protect against impacts from the running direction and lateral direction of the vehicle and splashes of foreign objects such as stones on the bottom.

[0039] Embodiment 1:

[0040] S1): After melting basalt stone at 1430°C, continuous basalt fiber with a diameter of 7 μm is drawn at high speed through a platinum-rhodium alloy drawing plate;

[0041] S2): plain weave the basalt fiber filaments obtained in S1 to obtain basalt fiber cloth; wherein the density of the basalt fiber cloth in the warp direction is 12 monofilaments / cm, and the density in the weft direction is 12 monofilaments / cm; the warp yarn density is 180 tex, the weft yarn density is 180 tex, and the unit area weight of each layer of fiber cloth (110, 120...1n0) is 200 g / m 2 .

[0042] S3): pre-impregnating the basalt fiber cloth obtained in S2 into epoxy resin to obtain a pre-impregnated cloth, in which the mass ratio of the basalt fiber cloth to the epoxy resin is 1.5:1, that is, 300g of the basalt fiber cloth is impregnated with 200g of the epoxy resin.

[0043] S4): The pre-impregnated basalt fiber cloth is cut and then stacked in three layers.

[0044] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 3 minutes at a temperature of 120 degrees and a pressure of 600t. After the pressing is completed, the cloth is demoulded and cut and punched after cooling to obtain a high-density fiber cloth packing box material.

[0045] Embodiment 2:

[0046] S1): After melting basalt stone at 1480°C, continuous basalt fiber filaments with a diameter of 10 μm are drawn at high speed through a platinum-rhodium alloy drawing plate; glass fiber filaments with a diameter of 15 μm are prepared at 1100°C by a crucible drawing method; and carbon fiber filaments with a diameter of 7 μm are prepared by a wet spinning process;

[0047] S2): The basalt fiber yarn / glass fiber yarn and carbon fiber yarn obtained in S1 are plain woven respectively to obtain basalt fiber cloth / glass fiber cloth and carbon fiber cloth; wherein the density of the basalt fiber cloth in the warp direction is 13 monofilaments / cm, the density in the weft direction is 13 monofilaments / cm, the warp yarn density is 350 tex, the weft yarn density is 350 tex, and the unit area weight of the fiber cloth is 380 g / m 2 ; The density of the glass fiber cloth in the warp direction is 14 monofilaments / cm, the density in the weft direction is 14 monofilaments / cm, the warp yarn density is 400tex, the weft yarn density is 400tex, and the unit area weight of the fiber cloth is 420g / m 2 The density of the carbon fiber cloth in the warp direction is 15 monofilaments / cm, the density in the weft direction is 15 monofilaments / cm, the warp yarn density is 280tex, the weft yarn density is 280tex, and the unit area weight of the fiber cloth is 300g / m 2 .

[0048] S3): pre-impregnating the woven glass fiber cloth / basalt fiber cloth and carbon fiber cloth in epoxy resin respectively to obtain pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the epoxy resin is 2:1.

[0049] S4): After the pre-impregnated fiber cloth is cut, the basalt fiber cloth, the carbon fiber cloth and the glass fiber cloth are stacked in sequence from bottom to top.

[0050] S5): The stacked pre-impregnated fiber cloth is preformed and placed in a mold for pressing for 10 minutes at a temperature of 180 degrees and a pressure of 700T. After the pressing is completed, the pre-impregnated fiber cloth is demoulded, and after cooling, it is cut and punched to form a high-density fiber cloth packing box material with a thickness of 0.3 cm.

[0051] Embodiment three:

[0052] S1): After melting basalt stone at 1500°C, continuous basalt fiber filaments with a diameter of 24 μm are drawn at high speed through a platinum-rhodium alloy drawing plate; glass fiber filaments with a diameter of 16 μm are prepared at 1200°C by a crucible drawing method;

[0053] S2): The basalt fiber yarns / glass fiber yarns obtained in S1 are twill-woven to obtain basalt fiber cloth / glass fiber cloth; wherein the density of the basalt fiber cloth in the warp direction is 16 monofilaments / cm, the density in the weft direction is 16 monofilaments / cm, the warp yarn density is 600 tex, the weft yarn density is 600 tex, and the unit area weight of the fiber cloth is 600 g / m 2 ; The density of the glass fiber cloth in the warp direction is 11 monofilaments / cm, the density in the weft direction is 11 monofilaments / cm, the warp yarn density is 450tex, the weft yarn density is 450tex, and the unit area weight of the fiber cloth is 490g / m 2 .

[0054] S3): pre-impregnating the woven glass fiber cloth / basalt fiber cloth and carbon fiber cloth in epoxy resin to obtain a pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the epoxy resin is 2.5:1.

[0055] S4): After the pre-impregnated fiber cloth is cut, 6 layers are alternately stacked from bottom to top in the order of basalt fiber cloth / glass fiber cloth.

[0056] S5): The stacked pre-impregnated fiber cloth is preformed and placed in a mold for pressing for 9 minutes at a temperature of 160 degrees and a pressure of 600T. After the pressing is completed, the pre-impregnated fiber cloth is demoulded, and after cooling, it is cut and punched to obtain a high-density fiber cloth packing box material.

[0057] Embodiment 4:

[0058] S1): After melting basalt stone at 1460°C, continuous basalt fiber with a diameter of 12 μm is drawn at high speed through a platinum-rhodium alloy drawing plate; the molten glass is first made into glass balls or rods with a diameter of 20 mm, and then heated and remelted to make glass fibers with a diameter of 24 μm.

[0059] S2): The basalt fiber yarn / glass fiber yarn obtained in S1 is used as warp yarn and weft yarn for plain weaving to obtain a composite fiber cloth of basalt fiber and glass fiber; wherein the density of the composite fiber cloth in the warp direction is 12 monofilaments / cm, and the density in the weft direction is 12 monofilaments / cm; the warp yarn density is 460tex, the weft yarn density is 460tex, and the unit area weight of the composite fiber cloth is 480g / m 2 .

[0060] S3): pre-impregnating the composite fiber cloth obtained in S2 into phenolic resin to obtain a pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the phenolic resin is 4:1.

[0061] S4): The pre-impregnated composite fiber cloth is cut and then stacked into 10 layers.

[0062] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 6 minutes at a temperature of 170 degrees and a pressure of 500t. After the pressing is completed, the cloth is demoulded and cut and punched after cooling to form a high-density fiber cloth packing box material with a thickness of 2.2 cm.

[0063] Embodiment five:

[0064] S1): preparing carbon fiber filaments with a diameter of 7 μm by a wet spinning process;

[0065] S2): the carbon fiber filaments obtained in S1 are plain woven to obtain a carbon fiber cloth; wherein the density of the carbon fiber cloth in the warp direction is 10 monofilaments / cm, and the density in the weft direction is 10 monofilaments / cm; the warp yarn density is 150 tex, the weft yarn density is 150 tex, and the unit area weight of the carbon fiber cloth is 150 g / m 2 .

[0066] S3): pre-impregnating the carbon fiber cloth obtained in S2 into epoxy resin to obtain a pre-impregnated cloth, wherein the mass ratio of the carbon fiber cloth to the epoxy resin is 1.8:1.

[0067] S4): The pre-impregnated carbon fiber cloth is cut and stacked into 12 layers.

[0068] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 5 minutes at a temperature of 140 degrees and a pressure of 400t. After the pressing is completed, the cloth is demoulded and cut and punched after cooling to form a high-density fiber cloth packing box material with a thickness of 3 cm.

[0069] Embodiment six:

[0070] S1): preparing glass fiber filaments with a diameter of 24 μm by a crucible drawing method at 1100° C.; preparing carbon fiber filaments with a diameter of 20 μm by a wet spinning process;

[0071] S2): The glass fiber filaments and carbon fiber filaments obtained in S1 are used as warp and weft yarns for plain weaving to obtain a composite fiber cloth of glass fiber and carbon fiber; wherein the density of the composite fiber cloth in the warp direction is 14 monofilaments / cm, and the density in the weft direction is 14 monofilaments / cm; the warp yarn density is 500 tex, the weft yarn density is 360 tex, and the unit area weight of the composite fiber cloth is 400 g / m 2 .

[0072] S3): pre-impregnating the composite fiber cloth obtained in S2 into a resin to obtain a pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the resin is 3.2:1.

[0073] S4): The pre-impregnated composite fiber cloth is cut and then stacked into 8 layers.

[0074] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 6 minutes at a temperature of 180 degrees and a pressure of 500t. After the pressing is completed, the cloth is demoulded and cut and punched after cooling to form a high-density fiber cloth packing box material with a thickness of 2 cm.

[0075] Embodiment seven:

[0076] S1): After melting basalt material at 1480°C, continuous basalt fiber filaments with a diameter of 12 μm are drawn at high speed through a platinum-rhodium alloy drawing plate; carbon fiber filaments with a diameter of 16 μm are prepared through a wet spinning process;

[0077] S2): The basalt fiber filaments / carbon fiber filaments obtained in S1 are used as warp and weft yarns for plain weaving to obtain a composite fiber cloth of basalt fiber and carbon fiber; wherein the density of the composite fiber cloth in the warp direction is 14 monofilaments / cm, and the density in the weft direction is 14 monofilaments / cm; the warp yarn density is 400tex, the weft yarn density is 300tex, and the unit area weight of the composite fiber cloth is 360g / m 2 .

[0078] S3): pre-impregnating the composite fiber cloth obtained in S2 into phenolic resin to obtain a pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the phenolic resin is 3:1.

[0079] S4): The pre-impregnated composite fiber cloth is cut and then stacked into 8 layers.

[0080] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 5 minutes at a temperature of 160 degrees and a pressure of 450t. After the pressing is completed, the cloth is demoulded and cut and punched after cooling to obtain a high-density fiber cloth packing box material.

[0081] Comparative Example

[0082] S1): After melting basalt material at 1480°C, continuous basalt fiber filaments with a diameter of 12 μm are drawn at high speed through a platinum-rhodium alloy drawing plate; carbon fiber filaments with a diameter of 16 μm are prepared through a wet spinning process;

[0083] S2): The basalt fiber filaments / carbon fiber filaments obtained in S1 are used as warp and weft yarns for plain weaving to obtain a composite fiber cloth of basalt fiber and carbon fiber; wherein the density of the composite fiber cloth in the warp direction is 14 monofilaments / cm, and the density in the weft direction is 14 monofilaments / cm; the warp yarn density is 400tex, the weft yarn density is 300tex, and the unit area weight of the composite fiber cloth is 360g / m 2 .

[0084] S3): pre-impregnating the composite fiber cloth obtained in S2 into phenolic resin to obtain a pre-impregnated cloth, wherein the mass ratio of the fiber cloth to the phenolic resin is 3:1.

[0085] S4): The pre-impregnated composite fiber cloth is cut and then stacked into 8 layers.

[0086] S5): The stacked basalt fiber cloth is preformed and placed in a mold for pressing for 5 minutes at a temperature of 160 degrees and a pressure of 450t. After pressing, the mold is demoulded and basalt powder is sprayed at a high temperature of 1400-1500°C using a spray gun. After cooling, the cloth is cut and punched to obtain a high-density fiber cloth packing box material.

[0087] The products in the above embodiments have been tested, and their performance in various aspects is shown in the following table:

[0088] Table 1, product performance parameters of Examples 1-7 and Comparative Examples

[0089]

[0090] The above-mentioned embodiments only express several implementation methods of the present invention, and the description thereof is relatively specific and detailed, but it cannot be understood as limiting the scope of the patent of the present invention. It should be pointed out that, for ordinary technicians in this field, several variations and improvements can be made without departing from the concept of the present invention, which all belong to the protection scope of the present invention. Therefore, the protection scope of the patent of the present invention shall be subject to the attached claims.

Claims

1. A high-density fiber cloth packing material, It is characterized in that The invention comprises multiple layers of fiber cloth, each layer of the fiber cloth is woven from multiple fiber threads; the multiple fiber threads are divided into warp threads and weft threads, the warp threads and weft threads are interlaced to form intersections, and the warp threads and weft threads appear alternately at two adjacent intersections; the density in the warp direction is 10-16 single threads / cm, and the density in the weft direction is 10-16 single threads / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex; the unit area weight of each layer of the fiber cloth is 150-600g / m 2 .

2. The high-density fiber cloth packing material according to claim 1, It is characterized in that The fiber cloth includes basalt fiber cloth.

3. The high-density fiber cloth packing material according to claim 2, It is characterized in that The fiber cloth further comprises at least one of carbon fiber cloth and glass fiber cloth.

4. The high-density fiber cloth packing material according to claim 1, It is characterized in that The fiber cloth comprises a composite fiber cloth, and the composite fiber cloth is woven from at least two of basalt fiber filaments, glass fiber filaments and carbon fiber filaments.

5. The high-density fiber cloth packing material according to claim 1, It is characterized in that The thickness of each layer of the fiber cloth is 0.15mm-0.6mm.

6. The high-density fiber cloth packing material according to claim 1, It is characterized in that The fiber cloth has 3 to 6 layers.

7. The high-density fiber cloth packing material according to claim 1, It is characterized in that The diameter of the warp yarn is 7-24 microns, and the diameter of the weft yarn is 7-24 microns.

8. The high-density fiber cloth packing material according to claim 1, It is characterized in that The thickness of the high-density fiber cloth packing box material is 0.3 cm-3 cm.

9. A method for preparing the high-density fiber cloth packing material as claimed in claims 1 to 8, It is characterized in that The following steps are involved: S1: preparing corresponding fiber filaments; S2: The fiber filaments obtained in S1 are woven into a fiber cloth along the warp and weft directions, each warp and weft are interlaced to form a cross point, and the warp and weft appear alternately at two adjacent cross points; the density in the warp direction is 10-16 monofilaments / cm, and the density in the weft direction is 10-16 monofilaments / cm; the warp yarn density is 150tex-600tex, and the weft yarn density is 150tex-600tex; the unit area weight of each layer of the fiber cloth is 150-600g / m 2 ; S3: pre-impregnating the fiber cloth obtained in S2 in a resin to form a pre-impregnated cloth; S4: The prepreg obtained in S3 is cut, preformed, and rapidly molded, and then demolded to obtain a high-density fiber cloth packing box material.

10. The method for preparing the high-density fiber cloth packing material according to claim 9, Features: The following steps are also included: S5: performing surface treatment on the high-density fiber cloth packing material obtained in S4.

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