Composite board based on high silica fiber and glass fiber

Abstract

The utility model provides a composite board based on high silica fibers and glass fibers, which belongs to the technical field of composite materials and comprises a high silica fiber cloth layer, a glass fiber cloth layer and a high silica fiber cloth layer, the first weaving patterns are plain weaves or satin weaves; a plurality of second weaving patterns are arranged on the surface of the glass fiber cloth layer, and the glass fiber cloth layer is arranged below the high-silica fiber cloth layer; the second weaving patterns are plain weaves; the three resin layers are respectively arranged on the upper surface of the high silica fiber cloth layer, between the high silica fiber cloth layer and the glass fiber cloth layer and on the lower surface of the glass fiber cloth layer, and are bonded with the high silica fiber cloth layer or the glass fiber cloth layer. The fireproof door has the advantages that the fireproof performance and the supporting strength are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of composite materials, in particular to a composite board based on high-silica fiber and glass fiber. Background Art

[0002] The electrification of automobiles has become a future development trend. If the internal temperature management of electric vehicle power batteries loses control, the temperature will rise sharply, leading to combustion and explosion of the power batteries.

[0003] In order to improve the safety of power battery use, it is necessary to arrange flame retardant materials on the power battery to isolate the burning flame and buy time for passengers to escape. The conventional flame retardant material is mica, which is arranged on the battery cell of the power battery in the form of mica sheets, or pasted on the inside of the power battery cover in the form of mica paper. However, under the high temperature and vibration environment of the power battery, the mica sheet or mica paper has the problem of failure of adhesion and falling off or displacement, causing the flame to jump out and endanger the life safety of passengers. There is also a solution of using high silica doping or coating silica aerogel felt, but because high silica and silica aerogel felt themselves do not have sufficient strength, they can only be filled between the cover and the battery cell, or between the cover and the chassis of the body, and cannot be used as a structural member, which invisibly occupies the precious internal space of electric vehicles.

[0004] Therefore, how to provide a composite board based on high-silica fiber and glass fiber to improve fire resistance and supporting strength has become a technical problem that needs to be solved urgently. Summary of the invention

[0005] The technical problem to be solved by the utility model is to provide a composite board based on high-silica fiber and glass fiber to improve the fire resistance and supporting strength.

[0006] The utility model is implemented as follows: a composite board based on high silica fiber and glass fiber, comprising:

[0007] A high-silica fiber cloth layer, with a plurality of first woven patterns on the surface; the first woven patterns are plain or satin;

[0008] a glass fiber cloth layer, with a plurality of second woven patterns on the surface, arranged below the high-silica fiber cloth layer; the second woven pattern is a plain weave;

[0009] The three resin layers are respectively arranged on the upper surface of the high-silica fiber cloth layer, between the high-silica fiber cloth layer and the glass fiber cloth layer, and on the lower surface of the glass fiber cloth layer, and are bonded to the high-silica fiber cloth layer or the glass fiber cloth layer.

[0010] Furthermore, the thickness of the high-silica fiber cloth layer is 0.4 mm.

[0011] Furthermore, the total thickness of the high-silica fiber cloth layer, the glass fiber cloth layer and the resin layer is 1.5 mm.

[0012] The advantages of the utility model are:

[0013] By arranging a high-silica fiber cloth layer, a glass fiber cloth layer and a resin layer, the high-silica fiber cloth layer has the advantages of stable chemical properties, acid and alkali resistance, high temperature resistance and burning resistance, and the glass fiber cloth layer has the advantages of good insulation performance, strong heat resistance, good corrosion resistance and high mechanical strength. The high-silica fiber cloth layer and the glass fiber cloth layer are bonded by the resin layer, which ultimately greatly improves the fire resistance and supporting strength of the composite material. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] The present invention will be further described below in conjunction with the embodiments with reference to the accompanying drawings.

[0015] Figure 1 The utility model is a structural schematic diagram of a composite plate based on high silica fiber and glass fiber.

[0016] Marking Description:

[0017] 100-A composite board based on high silica fiber and glass fiber, 1-high silica fiber cloth layer, 2-glass fiber cloth layer, 3-resin layer, 11-first weaving pattern, 21-second weaving pattern. DETAILED DESCRIPTION

[0018] The embodiment of the utility model provides a composite board 100 based on high-silica fiber and glass fiber, which solves the technical problems in the prior art that mica sheets or mica papers may fail to stick and fall off or shift, and that high-silica and silica aerogel felts themselves do not have sufficient strength, thereby achieving the technical effect of greatly improving the fire resistance and supporting strength.

[0019] The technical solution in the embodiment of the utility model is to solve the above problems, and the overall idea is as follows: a high-silica fiber cloth layer 1 with the advantages of stable chemical properties, acid and alkali resistance, high temperature resistance, and burning resistance is provided, and a glass fiber cloth layer 2 with the advantages of good insulation performance, strong heat resistance, good corrosion resistance, and high mechanical strength is provided, and then the high-silica fiber cloth layer 1 and the glass fiber cloth layer 2 are bonded by a resin layer 3 to improve the fire resistance and supporting strength of the composite board 100.

[0020] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0021] Please refer to Figure 1 As shown, a preferred embodiment of the composite board 100 based on high silica fiber and glass fiber of the utility model comprises:

[0022] A high-silica fiber cloth layer 1, with a plurality of first woven patterns 11 on the surface; the first woven patterns 11 are plain or satin;

[0023] The high-silica fiber cloth layer 1 is a high-temperature resistant inorganic fiber with a silicon oxide content of 96%-98%, a continuous temperature resistance of 1000°C, a short-term temperature resistance of 1400°C, a softening point close to 1700°C, and can be used for a long time at 1100°C, can work for 10 minutes at 1450°C, and can remain in good condition for 15 seconds at 1700°C. High-silica fiber has the characteristics of stable chemical properties, acid and alkali resistance, high temperature resistance, and ablation resistance. Compared with ceramic fiber cloth, it has a smaller ablation rate and heat shrinkage rate (close to 1%), and is odorless and non-irritating to the human body, and has the advantages of beautiful appearance and good feel. The high-silica fiber cloth layer 1 made of high-silica glass fiber has the characteristics of high strength, easy processing, and wide application. It is used as a high-temperature resistant, ablation resistant, heat insulating, and thermal insulation material; during specific implementation, vermiculite treatment can be performed to improve the temperature resistance.

[0024] A glass fiber cloth layer 2, with a plurality of second woven patterns 21 on the surface, disposed below the high-silica fiber cloth layer 1; the second woven pattern 21 is a plain weave;

[0025] The glass fiber cloth layer 2 is a kind of untwisted coarse yarn plain fabric, which is made of excellent glass raw materials through a series of high-temperature melting, wire drawing, weaving and other processes. The strength depends on the warp and weft directions of the fabric. When the warp or weft strength is high, it can be woven into a unidirectional cloth. The basic material of the glass fiber cloth layer 2 is alkali-free glass fiber yarn, and its production process is generally made by using an enhanced lubricant. The glass fiber cloth layer 2 is also an inorganic non-metallic material with very good performance, which has the advantages of good insulation, strong heat resistance, good corrosion resistance, high mechanical strength, etc., and the product appearance is smooth and beautiful, the weaving density is uniform and soft, and it can have good fit even when laid on uneven surfaces.

[0026] The three resin layers 3 are respectively arranged on the upper surface of the high-silica fiber cloth layer 1, between the high-silica fiber cloth layer 1 and the glass fiber cloth layer 2, and on the lower surface of the glass fiber cloth layer 2, and are bonded to the high-silica fiber cloth layer 1 or the glass fiber cloth layer 2.

[0027] The raw material of the resin layer 3 is resin. Resin usually refers to an organic polymer that has a softening or melting range after being heated, has a tendency to flow under the action of external force when softened, and is solid, semi-solid, or sometimes liquid at room temperature. Broadly speaking, any polymer compound that can be used as a raw material for plastic product processing is called a resin. It is the main raw material in plastic products. It is a solid, semi-solid or even liquid organic polymer at room temperature. It is generally insoluble in water but soluble in organic matter. According to the source of the resin, it can be divided into natural resin and synthetic resin; according to the processing behavior, it can be divided into thermoplastic resin and thermosetting resin; according to the type of synthetic reaction, the resin can be divided into addition polymer and condensation polymer.

[0028] The resin evenly infiltrates the high-silica fiber cloth layer 1 and the glass fiber cloth layer 2, bonds the two together as a whole, and then hardens to form the resin layer 3. After the composite is completed, the composite board 100 has an overall tensile strength greater than 300MPa, a tensile modulus greater than 19GPa, an elongation at break greater than 1.8%, a flexural strength greater than 280MPa, a flexural modulus greater than 20GPa, and a notched impact strength greater than 80KJ / ㎡, and has excellent mechanical properties.

[0029] The thickness of the high-silica fiber cloth layer 1 is 0.4 mm.

[0030] The total thickness of the high-silica fiber cloth layer 1, the glass fiber cloth layer 2 and the resin layer 3 is 1.5 mm.

[0031] The mechanical indicators of the composite plate 100 are as follows:

[0032] category Test Method Test Results Tensile Strength GB / T1447-2005 ≥300MPa Tensile modulus GB / T1447-2005 ≥19GPa Elongation at break GB / T1447-2005 ≥1.8％ Notched impact strength GB / T1451-2005 ≥80KJ / ㎡ Bending Strength GB / T1449-2005 ≥280MPa Flexural modulus GB / T1449-2005 ≥20GPa

[0033] Working principle of this utility model:

[0034] The composite sheet 100 is made into a box cover (not shown) of a power battery, and is arranged between the battery cell (not shown) and the chassis (not shown) of the vehicle body to block the explosion flame caused by the short circuit thermal runaway of the battery cell. The high silica fiber cloth layer 1 has a strong flame isolation performance, and the glass fiber cloth layer 2 has a high mechanical property. The high silica fiber cloth layer 1 and the glass fiber cloth layer 2 are combined through the resin layer 3, and can work for a long time at 1000°C, effectively blocking the explosion impact and flame of the power battery (not shown), reducing the impact of the accident, and gaining time for escape and handling of fire accidents.

[0035] Alternatively, the composite sheet material 100 is made into an isolation plate (not shown) and arranged between the battery cells of the power battery, or between the battery modules (not shown) and the battery modules. When a battery cell or battery module short-circuit catches fire, the fire is prevented from spreading to adjacent battery cells or battery modules, thereby reducing losses.

[0036] In summary, the advantages of the present invention are:

[0037] By arranging a high-silica fiber cloth layer, a glass fiber cloth layer and a resin layer, the high-silica fiber cloth layer has the advantages of stable chemical properties, acid and alkali resistance, high temperature resistance and burning resistance, and the glass fiber cloth layer has the advantages of good insulation performance, strong heat resistance, good corrosion resistance and high mechanical strength. The high-silica fiber cloth layer and the glass fiber cloth layer are bonded by the resin layer, which ultimately greatly improves the fire resistance and supporting strength of the composite material.

[0038] Although the specific implementation methods of the present invention are described above, those skilled in the art should understand that the specific embodiments described are only illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included in the scope of protection of the claims of the present invention.

Claims

1. A composite sheet based on high silica fiber and glass fiber, characterized in that: include: A high-silica fiber cloth layer, with a plurality of first woven patterns on the surface; the first woven patterns are plain or satin; a glass fiber cloth layer, with a plurality of second woven patterns on the surface, arranged below the high-silica fiber cloth layer; the second woven pattern is a plain weave; The three resin layers are respectively arranged on the upper surface of the high-silica fiber cloth layer, between the high-silica fiber cloth layer and the glass fiber cloth layer, and on the lower surface of the glass fiber cloth layer, and are bonded to the high-silica fiber cloth layer or the glass fiber cloth layer.

2. A composite board based on high silica fiber and glass fiber as claimed in claim 1, characterized in that: The thickness of the high-silica fiber cloth layer is 0.4 mm.

3. A composite board based on high silica fiber and glass fiber as claimed in claim 1, characterized in that: The total thickness of the high-silica fiber cloth layer, the glass fiber cloth layer and the resin layer is 1.5 mm.

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