CN113997651A - Carbon fiber bullet holds in palm - Google Patents

Carbon fiber bullet holds in palm Download PDF

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Publication number
CN113997651A
CN113997651A CN202111407752.6A CN202111407752A CN113997651A CN 113997651 A CN113997651 A CN 113997651A CN 202111407752 A CN202111407752 A CN 202111407752A CN 113997651 A CN113997651 A CN 113997651A
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China
Prior art keywords
prepreg
carbon fiber
layer
layers
layer comprises
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Pending
Application number
CN202111407752.6A
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Chinese (zh)
Inventor
于国之
付康
方帆
饶永红
吴继福
于龙之
孟国才
张英
陈义慧
王森
韩振
刘跃
李兴明
姚芳芳
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Shandong Hengyuan Weapon Technology Co ltd
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Shandong Hengyuan Weapon Technology Co ltd
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Priority to CN202111407752.6A priority Critical patent/CN113997651A/en
Publication of CN113997651A publication Critical patent/CN113997651A/en
Pending legal-status Critical Current

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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/02—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by structural features of a fibrous or filamentary layer
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B5/00—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts
    • B32B5/22—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed
    • B32B5/24—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer
    • B32B5/26—Layered products characterised by the non- homogeneity or physical structure, i.e. comprising a fibrous, filamentary, particulate or foam layer; Layered products characterised by having a layer differing constitutionally or physically in different parts characterised by the presence of two or more layers which are next to each other and are fibrous, filamentary, formed of particles or foamed one layer being a fibrous or filamentary layer another layer next to it also being fibrous or filamentary
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2262/00—Composition or structural features of fibres which form a fibrous or filamentary layer or are present as additives
    • B32B2262/10—Inorganic fibres
    • B32B2262/106—Carbon fibres, e.g. graphite fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B32—LAYERED PRODUCTS
    • B32B—LAYERED PRODUCTS, i.e. PRODUCTS BUILT-UP OF STRATA OF FLAT OR NON-FLAT, e.g. CELLULAR OR HONEYCOMB, FORM
    • B32B2571/00—Protective equipment
    • B32B2571/02—Protective equipment defensive, e.g. armour plates, anti-ballistic clothing

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  • Reinforced Plastic Materials (AREA)

Abstract

The invention discloses a carbon fiber bullet holder which comprises a first prepreg layer, a second prepreg layer, a third prepreg layer, a fourth prepreg layer and a fifth prepreg layer which are sequentially arranged from bottom to top; the first prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg cloth; the second prepreg layer comprises 3-5 layers of unidirectional carbon fiber prepreg tapes; the third prepreg layer comprises 4-6 layers of plain square carbon fiber prepreg cloth; the fourth prepreg layer comprises 7-9 layers of unidirectional carbon fiber prepreg tapes; the fifth prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg. According to the invention, the unidirectional carbon fiber prepreg tape and the plain square carbon fiber prepreg cloth are used for layering in different directions according to the stress condition of the bullet holder in the using process, so that the integral stress uniformity of the product is improved, and the plain square carbon fiber prepreg cloth is adopted in the first layer and the last layer to improve the appearance effect of the product.

Description

Carbon fiber bullet holds in palm
Technical Field
The invention relates to the technical field of bullet holders, in particular to a carbon fiber bullet holder.
Background
In recent years, various countries in the world deeply research and explore the lightweight of armored vehicles, and the composite material is widely adopted to reduce the mass of tank armored vehicles, so that various battle and technical performances are obviously improved. The resin-based composite material has good molding process, high specific strength, high specific modulus, low density, fatigue resistance, shock absorption and chemical corrosion resistance, and is widely applied to military industry. The application analysis of composite materials on tank armored vehicles by the Dehua Biao shows that the mass of the applied composite materials is about 65 percent lower than that of applied steel parts and about 40 percent lower than that of aluminum alloy under the same volume of the tank armored vehicles, and the production cost of the tank armored vehicles is reduced by about 25 percent.
The carbon fiber prepreg is prepared by compounding epoxy resin on carbon fibers by a high-pressure high-temperature technology. The composite material is made of carbon fiber yarn, epoxy resin, release paper and other materials through the processes of coating, hot pressing, cooling, coating, winding and the like, and is called carbon fiber prepreg, namely carbon fiber prepreg cloth. The prepreg is called because it is only the preliminary impregnation of resin and carbon fiber, and the final impregnation is performed when the product is molded. In recent years, the usage amount of carbon fiber composite materials in the fields of satellites, spacecrafts, military weapons and the like is increased year by year, and particularly, the carbon fiber prepreg composite materials are widely applied to main structures of central bearing cylinders, base plates, connecting frames and the like of satellites, so that the functional requirements of spacecrafts are met. And carbon fiber prepreg has also been widely used on weapon accessories, for example, the bullet holder that adopts carbon fiber prepreg cloth to prepare, weight ratio aluminum alloy bullet holder weight reduces more than 30%, accords with present armoured vehicle and subtracts heavy requirement. But the carbon fiber prepreg cloth elastic support has higher requirement on the pressure resistance in the using process, otherwise the elastic support is easy to break. Therefore, the bullet support prepared from the carbon fiber prepreg cloth is required, the pressure resistance can be improved, and the bullet support has important significance for the research on lightweight tank armored vehicles.
Disclosure of Invention
In view of the above prior art, the present invention provides a carbon fiber bullet holder. According to the invention, the unidirectional carbon fiber prepreg tape and the plain square carbon fiber prepreg cloth are used for layering in different directions according to the stress condition of the bullet holder in the using process, so that the integral stress uniformity of the product is improved, and the plain square carbon fiber prepreg cloth is adopted in the first layer and the last layer to improve the appearance effect of the product.
Description of terms:
in the invention, the unidirectional carbon fiber prepreg tape is laid at an angle of 0 degree, which means that when the unidirectional carbon fiber prepreg tape is laid, the included angle between a single carbon fiber in the unidirectional carbon fiber prepreg tape and the horizontal direction is 0 degree;
the unidirectional carbon fiber prepreg tape is laid at an angle of 45 degrees, which means that when the unidirectional carbon fiber prepreg tape is laid, the included angle between a single carbon fiber in the unidirectional carbon fiber prepreg tape and the horizontal direction is 45 degrees;
the plain square carbon fiber prepreg cloth is laid at an angle of (0 degrees and 90 degrees), namely the included angle between weft carbon fibers in the plain square carbon fiber prepreg cloth and the horizontal direction is 0 degree, and the included angle between warp carbon fibers in the plain square carbon fiber prepreg cloth and the horizontal direction is 90 degrees;
the plain square carbon fiber prepreg cloth is laid at an angle of (-45 degrees and 45 degrees), namely, the included angle between weft carbon fibers in the plain square carbon fiber prepreg cloth and the horizontal direction is-45 degrees, and the included angle between warp carbon fibers in the plain square carbon fiber prepreg cloth and the horizontal direction is 45 degrees.
In order to achieve the purpose, the invention adopts the following technical scheme:
the invention provides a carbon fiber bullet holder which comprises a first prepreg cloth layer, a second prepreg cloth layer, a third prepreg cloth layer, a fourth prepreg cloth layer and a fifth prepreg cloth layer which are sequentially arranged from bottom to top; the first prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg cloth; the second prepreg layer comprises 3-5 layers of unidirectional carbon fiber prepreg tapes; the third prepreg layer comprises 4-6 layers of plain square carbon fiber prepreg cloth; the fourth prepreg layer comprises 7-9 layers of unidirectional carbon fiber prepreg tapes; the fifth prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg.
Preferably, the area density of the unidirectional carbon fiber prepreg tape is 75g/m2。
Preferably, the plain grid carbon fiber prepreg has an area density of 140g/m2。
Preferably, the first prepreg layer comprises 1-2 plain square carbon fiber prepregs which are laid at an angle of (0 DEG and 90 ℃).
Preferably, the second prepreg layer comprises 3-5 unidirectional carbon fiber prepreg tapes which are laid at an angle of 0 degrees.
Preferably, the third prepreg layer comprises 4-6 plain square carbon fiber prepregs which are laid at an angle of (-45 degrees and 45 degrees).
Preferably, the fourth prepreg layer comprises a 0 ° prepreg tape layer and a 45 ° prepreg tape layer; the 0-degree prepreg tape layer comprises 5-6 unidirectional carbon fiber prepreg tapes which are laid at an angle of 0 degree, and the 45-degree prepreg tape layer comprises 2-3 unidirectional carbon fiber prepreg tapes which are laid at an angle of 45 degree.
Preferably, the 45 ° prepreg tape layer is located above the 0 ° prepreg tape layer.
Preferably, the fifth prepreg layer comprises 1-2 plain square carbon fiber prepregs which are laid at an angle of (0 DEG and 90 ℃).
Preferably, the thickness of the carbon fiber bullet holder is 1.5-1.8 mm.
The invention has the beneficial effects that:
the invention utilizes the designability of the performance of the carbon fiber composite material (carbon fiber prepreg cloth), adopts the unidirectional carbon fiber prepreg tape and the plain square carbon fiber prepreg cloth to carry out layering in different directions, carries out different layering designs according to the stress condition of the product, and can simultaneously carry out reinforcement treatment on local positions, thereby improving the rigidity and toughness of the product. The weight of a product formed by using the carbon fiber prepreg can be reduced by about 40 percent, and the requirement of light weight of the existing equipment is met; and the price of the product can be reduced, and the market competitiveness of the product is improved.
Drawings
FIG. 1: the section structure of the carbon fiber bullet holder is exploded;
FIG. 2: the section three-dimensional structure of the carbon fiber bullet holder is exploded;
shown in the figure: 1-a first prepreg layer, 2-a second prepreg layer, 3-a third prepreg layer, 4-a fourth prepreg layer, 5-a fifth prepreg layer, 6-0 degree prepreg tape layer, 7-45 degree prepreg tape layer, 8-plain check carbon fiber prepreg cloth, and 9-unidirectional carbon fiber prepreg tape.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs.
The invention provides a carbon fiber bullet holder, which comprises a first prepreg cloth layer 1, a second prepreg cloth layer 2, a third prepreg cloth layer 3, a fourth prepreg cloth layer 4 and a fifth prepreg cloth layer 5 which are sequentially arranged from bottom to top as shown in figures 1-2; the first prepreg layer 4 comprises 1-2 layers of plain square carbon fiber prepreg 8; the second prepreg layer 2 comprises 3-5 layers of unidirectional carbon fiber prepreg tapes 9; the third prepreg layer 3 comprises 4-6 layers of plain square carbon fiber prepreg 8; the fourth prepreg layer 4 comprises 7-9 layers of unidirectional carbon fiber prepreg tapes 9; the fifth prepreg layer 5 comprises 1-2 layers of plain square carbon fiber prepreg 8.
The surface density of the unidirectional carbon fiber prepreg tape 9 is 75g/m2. The area density of the plain square carbon fiber prepreg cloth 8 is 140g/m2. The first prepreg layer 1 comprises 1-2 layers of plain square carbon fiber prepreg 8 which is paved at an angle of (0 degrees and 90 degrees). The second prepreg layer 2 comprises 3-5 unidirectional carbon fiber prepreg tapes 9 which are laid at an angle of 0 degree. The third prepreg layer 3 comprises 4-6 layers of plain square carbon fiber prepreg 8 which is paved at (-45 degrees and 45 degrees). The fourth prepreg layer 4 comprises a 0 ° prepreg tape layer 6 and a 45 ° prepreg tape layer 7; the 0-degree prepreg tape layer 6 comprises 5-6 unidirectional carbon fiber prepreg tapes 9 which are laid at an angle of 0 degrees, and the 45-degree prepreg tape layer 7 comprises 2-3 unidirectional carbon fiber prepreg tapes 9 which are laid at an angle of 45 degrees. The 45 ° prepreg tape layer 7 is located above the 0 ° prepreg tape layer 6. The fifth prepreg layer 5 comprises 1-2 layers of plain square carbon fiber prepreg 8 which is paved at an angle of (0 degrees and 90 degrees). The thickness of the carbon fiber bullet support is 1.5-1.8 mm.
In order to make the technical solutions of the present application more clearly understood by those skilled in the art, the technical solutions of the present application will be described in detail below with reference to specific embodiments.
The test materials used in the examples of the present invention are all conventional in the art and commercially available.
Examples
Preparing a carbon fiber bullet holder:
1. and cutting the required plain square carbon fiber prepreg cloth and the unidirectional carbon fiber prepreg tape according to the shape of the bullet holder.
2. Mold treatment
(1) Cleaning the residual resin on the surface of the mould by using a copper scraper and wiping the resin by using cotton cloth;
(2) dipping a proper amount of release agent MB5091H in cotton cloth, uniformly wiping movable parts such as a mold cavity, a core surface and an insert and the like, and stopping airing for 10-20 min at room temperature;
(3) quality control points are as follows: the release agent is evenly coated.
3. Lay layer by plain weave square carbon fiber prepreg cloth and one-way carbon fiber prepreg area after supreme cutting down in the mould:
the first prepreg layer contained 2 plain-weave check carbon fiber prepregs laid at (0 °, 90 °).
The second prepreg layer contained 4 unidirectional carbon fiber prepreg tapes laid at 0 °.
The third prepreg layer contained 5 layers of plain weave check carbon fiber prepreg laid at (-45 °, 45 °).
The fourth prepreg layer comprises 5 unidirectional carbon fiber prepreg tapes which are laid at an angle of 0 degree and 2 unidirectional carbon fiber prepreg tapes which are laid at an angle of 45 degrees from bottom to top.
The fifth prepreg layer contained 2 plain-weave check carbon fiber prepregs laid at (0 °, 90 °).
The surface density of the unidirectional carbon fiber prepreg tape is 75g/m2The surface density of the plain square carbon fiber prepreg cloth is 140g/m2。
4. Curing
(1) Putting the die into a pressure machine, boosting the pressure to 0.1MPa, preheating at 110 DEG C
Preheating for 8 min;
(2) and after the preheating time is up, increasing the pressure to 9MPa, adjusting the equipment temperature to 145 ℃, keeping the temperature for 120 minutes after the mold temperature is increased to the specified requirement, taking out the mold, opening the mold when the mold temperature is reduced to below 60 ℃, and taking out the product to obtain the carbon fiber elastic support with the thickness of 1.5 mm.
Comparative example 1
The difference from the embodiment is that: and 3, paving 20 layers of the cut plain square carbon fiber prepreg cloth in a mould at an angle of (0 degrees and 90 degrees) from bottom to top. The thickness of the obtained carbon fiber elastic support is 1.5 mm.
Comparative example 2
The difference from the embodiment is that: and 3, paving 20 layers of the cut plain square carbon fiber prepreg cloth in a mould at the angle of (-45 degrees and 45 degrees) from bottom to top. The thickness of the obtained carbon fiber elastic support is 1.5 mm.
Comparative example 3
The difference from the embodiment is that: and 3, layering the cut plain square carbon fiber prepreg cloth in a mould at an angle of (0 degrees and 90 degrees) from bottom to top, layering the cut plain square carbon fiber prepreg cloth at an angle of (-45 degrees and 45 degrees), and layering the cut plain square carbon fiber prepreg cloth at an angle of (0 degrees and 90 degrees). Namely, the first prepreg layer (7 layers), the third prepreg layer (6 layers) and the fifth prepreg layer (7 layers) in the remaining examples.
Comparative example 4
The difference from the embodiment is that: and 3, reserving the first prepreg cloth layer (5 layers), the second prepreg cloth layer (5 layers), the third prepreg cloth layer (5 layers) and the fifth prepreg cloth layer (5 layers) from bottom to top.
The carbon fiber composite material elastic support prepared in the examples and the comparative examples 1 to 4 was subjected to a compression test by an electronic tensile machine, and the bending resistance and toughness performance indexes thereof were compared with those of a commercially available cast aluminum elastic support (thickness of 1.6mm), and the obtained results are shown in table 1:
TABLE 1 compression resistance
Figure BDA0003372985570000051
As can be seen from Table 1, the bending resistance of the carbon fiber composite material bullet holder is far higher than that of a cast aluminum bullet holder, the cast aluminum bullet holder is broken or bent after being pressed, the product cannot be deformed, the carbon fiber composite material bullet holder prepared in the embodiment recovers after being deformed, and the compression resistance is higher than that of comparative examples 1-4, so that the layering mode influences the compression resistance of the bullet holder.
The above description is only a preferred embodiment of the present application and is not intended to limit the present application, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims (10)

1. A carbon fiber bullet holder is characterized by comprising a first prepreg layer, a second prepreg layer, a third prepreg layer, a fourth prepreg layer and a fifth prepreg layer which are sequentially arranged from bottom to top; the first prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg cloth; the second prepreg layer comprises 3-5 layers of unidirectional carbon fiber prepreg tapes; the third prepreg layer comprises 4-6 layers of plain square carbon fiber prepreg cloth; the fourth prepreg layer comprises 7-9 layers of unidirectional carbon fiber prepreg tapes; the fifth prepreg layer comprises 1-2 layers of plain square carbon fiber prepreg.
2. The carbon fiber sabot of claim 1, wherein said unidirectional carbon fiber prepreg tape has an areal density of 75g/m2。
3. The carbon fiber sabot of claim 1, wherein said plain square carbon fiber prepreg has an areal density of 140g/m2。
4. The carbon fiber sabot of claim 1, wherein said first prepreg layer comprises 1-2 plain weave check carbon fiber prepreg plies laid at (0 °, 90 °).
5. The carbon fiber bullet holder according to claim 1, wherein said second prepreg layer comprises 3-5 unidirectional carbon fiber prepreg tapes laid at 0 °.
6. The carbon fiber sabot of claim 1, wherein said third prepreg layer comprises 4-6 plain weave check carbon fiber prepregs laid at (-45 °, 45 °).
7. The carbon fiber sabot of claim 1, wherein said fourth prepreg layer comprises a 0 ° prepreg tape layer and a 45 ° prepreg tape layer; the 0-degree prepreg tape layer comprises 5-6 unidirectional carbon fiber prepreg tapes which are laid at an angle of 0 degree, and the 45-degree prepreg tape layer comprises 2-3 unidirectional carbon fiber prepreg tapes which are laid at an angle of 45 degree.
8. The carbon fiber sabot of claim 7, wherein said 45 ° prepreg tape layer is located above a 0 ° prepreg tape layer.
9. The device carbon fiber sabot of claim 1, wherein said fifth prepreg layer comprises 1-2 plain grid carbon fiber prepregs laid at (0 °, 90 °).
10. The device carbon fiber bullet holder of claim 1, wherein the thickness of said carbon fiber bullet holder is 1.5-1.8 mm.
CN202111407752.6A 2021-11-24 2021-11-24 Carbon fiber bullet holds in palm Pending CN113997651A (en)

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CN202111407752.6A CN113997651A (en) 2021-11-24 2021-11-24 Carbon fiber bullet holds in palm

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Application Number Priority Date Filing Date Title
CN202111407752.6A CN113997651A (en) 2021-11-24 2021-11-24 Carbon fiber bullet holds in palm

Publications (1)

Publication Number Publication Date
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