A carbide-containing multi-element slow-ablation material and its preparation method and application

Abstract

A carbide-containing multi-component ablation-slowing material and its preparation method and application belong to the technical field of composite material preparation. The raw material components of the material, by weight, are 35.8 to 68.3 parts of wax, 10 to 30.5 parts of talc, 0 to 30 parts of aluminum oxide, 0 to 20 parts of cerium oxide, 10.5 to 42.6 parts of titanium dioxide, 10 to 30 parts of silicon carbide, and 0 to 8 parts of emulsifier. Its advantages are: since silicon carbide has the characteristics of high temperature resistance, high toughness, non-corrosiveness, and low specific gravity, it can effectively improve the material's ablation resistance. The ablation-slowing material prepared with silicon carbide as one of the raw materials has an ablation reduction performance that exceeds that of traditional titanium dioxide-paraffin-type corrosion inhibitor materials by 20%, effectively improving the life of the artillery barrel, and the product has good stability, long shelf life, simple preparation, and is suitable for industrial large-scale production.

Description

Technical Field

[0001] The invention relates to a carbide-containing multi-element slow-ablation material and a preparation method and application thereof, belonging to the technical field of composite materials. Background Art

[0002] With the continuous improvement of artillery combat technical indicators, the application and promotion of various new high-energy propellants and high-density loading technologies have caused serious ablation of the inner bore of the artillery barrel, greatly shortening the service life of the weapon. The ablation-slowing additive material can effectively reduce the damage to the inner bore surface caused by high-temperature gunpowder gas and belt during the firing process, and is a proven barrel life extension material. The ablation-slowing additive is mainly divided into two categories, one is the barrel lining filled on the inner wall of the projectile cartridge, and the other is the built-in ablation-slowing additive directly mixed with the explosive.

[0003] Traditional externally added slow-ablation materials are relatively brittle, have poor flexibility, are inconvenient to load, and are prone to residue. Silicone oil materials have a good ablation reduction effect, but they are liquid and easy to leak, contaminate and stick to the propellant particles, and cause ignition problems. In addition, traditional slow-ablation materials can generally only be used alone for external or internal addition, and have a small scope of use. Summary of the invention

[0004] The technical problem solved by the present invention is: to overcome the technical deficiencies of existing slow-ablation materials, and to provide a carbide-containing multi-component slow-ablation material which has good flexibility, is not prone to slagging, can be used for both internal addition and external filling, and its preparation method and application. The raw materials of the slow-ablation material are easily available and the preparation method is simple, and it has a good ablation reduction effect.

[0005] The technical solution of the present invention is: A carbide-containing multi-element slow-ablation material, the raw material components of which include wax, talcum powder, titanium dioxide, aluminum oxide, cerium oxide, silicon carbide and emulsifier.

[0006] The raw material components of the slow ablation material are, by weight, 35.8 to 68.3 parts of wax, 10 to 30.5 parts of talc, 0 to 30 parts of aluminum oxide, 0 to 20 parts of cerium oxide, 10.5 to 42.6 parts of titanium dioxide, 10 to 30 parts of silicon carbide, and 0 to 8 parts of emulsifier.

[0007] The wax is one or a mixture of paraffin wax, microcrystalline wax and silicone wax.

[0008] The particle size of the titanium dioxide is 2 to 5 μm.

[0009] The silicon carbide particle size is 1 nm to 5 μm.

[0010] The emulsifier is stearyl alcohol or hexadecanol.

[0011] A method for preparing a carbide-containing multi-element slow-ablation material, the specific preparation steps are: (1) Weigh wax according to parts by weight, place it in a heating furnace for melting, and obtain wax liquid A after the wax is completely melted, and the temperature is controlled at 90 to 130° C.; (2) Weigh titanium dioxide, silicon carbide, and talc in parts by weight, and then add them to the wax liquid A in sequence, turn on the stirrer to stir, and obtain a viscous mixture B; (3) The viscous mixture B is transferred to a dipping table, and is dip-coated into a specific design shape, such as a flat plate, a stripe, etc., and then cooled at room temperature to obtain a semi-finished corrosion inhibitor.

[0012] (4) Cutting the cooled semi-finished corrosion inhibitor to obtain an externally added corrosion inhibitor, or ball milling the semi-finished corrosion inhibitor to obtain an internally added corrosion inhibitor.

[0013] The application of the carbide-containing multi-component ablation-slowing material is characterized in that: the carbide-containing multi-component ablation-slowing material is used to extend the life of a gun barrel: the ablation-slowing additive is cut into sheets and placed at the bottom of a cartridge case (i.e., external filling) as a cartridge case lining, or the ablation-slowing additive is made into powder and mixed into a propellant (internal addition) as a propellant component.

[0014] In the present invention, because silicon carbide has the characteristics of high temperature resistance, high toughness, low corrosion resistance, and low specific gravity, it can effectively improve the material's anti-ablation performance.

[0015] Beneficial effects of the present invention: The flexibility of the traditional corrosion inhibitor is improved. The corrosion inhibitor prepared according to the present invention has good flexibility and is not easy to slag. After adding the polyester bushing, the slag accumulation phenomenon of the corrosion inhibitor is effectively reduced.

[0016] At present, due to the increasing demand for extending the life of artillery barrels, traditional TiO2-paraffin corrosion inhibitors can no longer meet the demand. The ablation-reducing material prepared by this method has been verified by a semi-closed explosive test, and its ablation reduction performance is more than 20% higher than that of TiO2-paraffin corrosion inhibitors, which greatly improves the life of the barrel.

[0017] Broadened the application areas of silicon carbide: will further promote the application of silicon carbide in the field of anti-ablative materials and military fields.

[0018] The corrosion inhibitor prepared by the present invention can be used for internal addition and external filling at the same time, and can meet the special needs of different types of large, medium and small bullets at the same time.

[0019] The corrosion inhibition material preparation process technology is simple, efficient, easy to operate, easy to control the process, has a wide source of raw materials, is convenient for industrial production, and is more practical. DETAILED DESCRIPTION

[0020] The present invention will be further explained below in conjunction with specific embodiments. It will be appreciated by those skilled in the art that the following described embodiments are part of the present invention, rather than all embodiments, and are only used to illustrate the present invention, and should not be considered as limiting the scope of the present invention. All reagents used are conventional products that can be purchased commercially. Example 1

[0021] A method for preparing a multi-component slow-ablation material containing carbides, the raw material composition and weight parts are: (1) Weigh 41 parts of paraffin wax and 13 parts of silicone wax by weight, place the two in a heating furnace for melting, and obtain a mixed wax liquid A after the wax is completely melted. The temperature of the wax liquid A is controlled at about 110° C.; (2) According to the weight percentage, 12 parts of titanium dioxide and 34 parts of SiC powder were weighed respectively, and then added to the wax liquid A in sequence, stirring while adding, the stirring speed was 500 r / min, and the stirring time was 10 min. After the stirring was completed, a viscous mixture B was obtained.

[0022] (3) The viscous mixed material B is transferred to a dipping table, and the corrosion inhibitor C is obtained by dipping, and then cooled at room temperature to obtain a semi-finished product D.

[0023] (4) Cut the semi-finished product D into sheets of specified size according to the drawing.

[0024] (5) The finished products are packaged and stored. Example 2

[0025] A method for preparing a multi-component slow-ablation material containing carbides, the raw material composition and weight parts are: (1) Weigh 41 parts of paraffin wax and 13 parts of silicone wax by weight, place the two in a heating furnace for melting, and obtain a mixed wax liquid A after the wax is completely melted. The temperature of the wax liquid A is controlled at about 110° C.; (2) According to the weight percentage, 12 parts of titanium dioxide, 33 parts of SiC powder and 1 part of emulsifier were weighed respectively, and then added to the wax liquid A in sequence, stirring while adding, at a stirring speed of 500 r / min and a stirring time of 10 min. After the stirring was completed, a viscous mixture B was obtained.

[0026] (3) The viscous mixture B is transferred to a container and cooled at room temperature to obtain a solid corrosion inhibitor.

[0027] (4) The solid corrosion inhibitor is placed in a crusher for crushing, and then the crushed corrosion inhibitor is moved into a ball mill for ball milling to obtain an internal corrosion inhibitor additive, thereby completing the preparation.

[0028] (5) Packing the prepared internal retardant ablation additive and storing it in storage.

[0029] The ablation-reducing material prepared by this method was verified by a semi-closed explosive test, and its ablation-reducing performance was more than 20% higher than that of the TiO2-paraffin type corrosion inhibitor.

[0030] The present invention is not limited to the above optional implementation modes. Anyone can obtain other various forms of products under the enlightenment of the present invention, which belong to the protection scope of the present invention. The above specific implementation modes should not be understood as limiting the protection scope of the present invention. Ordinary technicians in this field should understand that without departing from the scope of the present invention, the technical solutions recorded in the above embodiments can be modified, or some or all of the technical features therein can be replaced by equivalents. At the same time, these modifications or replacements will not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A carbide-containing multi-element slow-ablation material, characterized by: The raw material components of the slow ablation material are, by weight, 35.8 to 68.3 parts of wax, 10 to 30.5 parts of talc, 0 to 30 parts of aluminum oxide, 0 to 20 parts of cerium oxide, 10.5 to 42.6 parts of titanium dioxide, 10 to 30 parts of silicon carbide, and 0 to 8 parts of emulsifier.

2. The carbide-containing multi-element ablation-slowing material according to claim 1, characterized in that: The wax is one or a mixture of paraffin wax, microcrystalline wax and silicone wax.

3. The carbide-containing multi-element ablation-slowing material according to claim 1, characterized in that: The particle size of the titanium dioxide is 2 to 5 μm.

4. The carbide-containing multi-element ablation-slowing material according to claim 1, characterized in that: The silicon carbide particle size is 1 nm to 5 μm.

5. The carbide-containing multi-element ablation-slowing material according to claim 1, characterized in that: The emulsifier is octadecyl alcohol or hexadecanol.

6. The method for preparing the carbide-containing multi-element slow-ablation material according to any one of claims 1 to 5, characterized in that: The specific preparation steps are as follows: (1) Weigh the wax according to the weight percentage, place it in a heating furnace for melting, and obtain wax liquid A after the wax is completely melted, and the temperature is controlled at 90-130°C; (2) Weigh titanium dioxide, silicon carbide, and talcum powder according to the weight percentage, and then add them to the wax liquid A in turn, turn on the agitator for stirring, and obtain a viscous mixture B; (3) Transfer the viscous mixture B to a dipping table, dip-coat it into a specific designed shape, and then cool it at room temperature to obtain a semi-finished corrosion inhibitor; (4) Cut the cooled semi-finished corrosion inhibitor to obtain an externally added corrosion inhibitor, or ball-mill it to obtain an internally added corrosion inhibitor.

7. An application of a carbide-containing multi-element slow-ablation material, characterized in that: The application of the carbide-containing multi-element ablation-retarding material as described in any one of claims 1 to 5 in extending the life of a gun barrel: the ablation-retarding additive is cut into sheets and placed at the bottom of a cartridge as a cartridge lining, or the ablation-retarding additive is made into powder and mixed into a propellant as a component of the propellant.