CN110713427B - Explosive adhesive tape and preparation method thereof - Google Patents

Explosive adhesive tape and preparation method thereof Download PDF

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Publication number
CN110713427B
CN110713427B CN201911126608.8A CN201911126608A CN110713427B CN 110713427 B CN110713427 B CN 110713427B CN 201911126608 A CN201911126608 A CN 201911126608A CN 110713427 B CN110713427 B CN 110713427B
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explosive
flexible
weight
parts
sensitive adhesive
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CN110713427A (en
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李如江
周鹏飞
刘晓红
高永宏
张晋红
刘天生
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North University of China
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North University of China
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    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B25/00—Compositions containing a nitrated organic compound
    • C06B25/34—Compositions containing a nitrated organic compound the compound being a nitrated acyclic, alicyclic or heterocyclic amine
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B21/00—Apparatus or methods for working-up explosives, e.g. forming, cutting, drying
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B23/00—Compositions characterised by non-explosive or non-thermic constituents
    • C06B23/001—Fillers, gelling and thickening agents (e.g. fibres), absorbents for nitroglycerine
    • C—CHEMISTRY; METALLURGY
    • C06—EXPLOSIVES; MATCHES
    • C06B—EXPLOSIVES OR THERMIC COMPOSITIONS; MANUFACTURE THEREOF; USE OF SINGLE SUBSTANCES AS EXPLOSIVES
    • C06B45/00—Compositions or products which are defined by structure or arrangement of component of product
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J7/00—Adhesives in the form of films or foils
    • C09J7/20—Adhesives in the form of films or foils characterised by their carriers
    • C09J7/29—Laminated material
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2407/00—Presence of natural rubber
    • C—CHEMISTRY; METALLURGY
    • C09—DYES; PAINTS; POLISHES; NATURAL RESINS; ADHESIVES; COMPOSITIONS NOT OTHERWISE PROVIDED FOR; APPLICATIONS OF MATERIALS NOT OTHERWISE PROVIDED FOR
    • C09J—ADHESIVES; NON-MECHANICAL ASPECTS OF ADHESIVE PROCESSES IN GENERAL; ADHESIVE PROCESSES NOT PROVIDED FOR ELSEWHERE; USE OF MATERIALS AS ADHESIVES
    • C09J2423/00—Presence of polyolefin
    • C09J2423/10—Presence of homo or copolymers of propene
    • C09J2423/106—Presence of homo or copolymers of propene in the substrate

Abstract

The invention relates to an explosive adhesive tape and a preparation method thereof, which solve the problems of poor adhesion property, low strength and the like of the existing flexible explosive. The explosive adhesive tape consists of a pressure-sensitive adhesive, a flexible explosive, a flexible high-molecular bonding layer and a base material from top to bottom; when the flexible explosive is prepared, the flexible high-molecular bonding layer is uniformly coated on the lower surface of the flexible explosive, then the flexible high-molecular bonding layer is combined with a base material, and finally the pressure-sensitive adhesive is uniformly coated on the upper surface of the flexible explosive. The explosive adhesive tape has the advantages of strong adhesive force, high tensile strength, good explosion effect, convenient use and operation, simple process and the like, and has important application value in the special explosion field of eliminating welding stress by explosion and the like.

Description

Explosive adhesive tape and preparation method thereof
Technical Field
The invention relates to the technical field of explosive structure and preparation, in particular to an explosive adhesive tape and a preparation method thereof.
Background
The explosive processing of metal refers to a processing technology of processing and forming a metal blank, hardening the surface and eliminating welding residual stress by explosion by using explosive as energy. With the development of production and the progress of science and technology, new technologies and new processes for various processing of metals by using explosive, a huge and cheap energy source, are continuously emerging. For example, explosive welding is a new technology developed in the last 30 years, and a proper explosive is adopted to detonate in a welding area in a proper mode, and the energy of explosive shock waves is utilized to make metal in the residual stress area take part in plastic deformation, so that a process for eliminating or reducing the residual stress is achieved. In addition, the surface of the high-manganese steel is subjected to explosion hardening and strengthening to provide the best technical means for the surface hardness and prolonging the service life of the high-manganese steel, and the best surface treatment means is to harden and strengthen the high-manganese steel by using shock waves generated by explosive explosion at present.
Research results show that the metal explosion processing is commonly used with explosives with small critical thickness, high explosion speed and high brisance. The bonding state of the explosive and the metal surface directly influences the explosion effect of the explosive, if the explosive is not closely bonded with the metal surface, the pressure applied to the metal surface is reduced, the purpose of stress application is possibly reduced or lost, the effect of the explosive is difficult to judge by visually observing the explosion trace of the explosive on a device, and the quality control of a processed part is very unfavorable. At present, butter is often required to be smeared on the metal surface or the tablets are fixed by using adhesive tapes on the spot, so that the tablets are tightly attached to the metal surface, but air bubbles and gaps are easily left, and the thickness of the binder is uneven, so that the explosion impact effect is influenced. In addition, when the surface of a device with a complex shape is subjected to explosion treatment, the conventional method is difficult to fix the tablet due to the influence of gravity, especially in a large area and a place susceptible to gravity.
Disclosure of Invention
The invention aims to solve the problems of poor adhesion performance, low strength and the like of the existing flexible explosive, and provides an explosive adhesive tape and a preparation method thereof.
The invention is realized by the following technical scheme:
an explosive adhesive tape comprises a pressure-sensitive adhesive, a flexible explosive, a flexible high-molecular bonding layer and a base material from top to bottom. The explosive adhesive tape is in a roll shape.
As the preferable technical scheme, the pressure-sensitive adhesive adopts water-based polyurethane pressure-sensitive adhesive, has strong adhesive force, is environment-friendly and pollution-free, and has the thickness of not more than 50 mu m; the flexible explosive consists of 85-90 parts by weight of energetic materials and 10-15 parts by weight of polymer bonding materials, and the thickness of the flexible explosive is 1.0-1.2 mm; the flexible high-molecular bonding layer adopts polyurethane or VAE copolymer emulsion, can strongly connect the flexible explosive and the base material, ensures that the explosive layer and the base material cannot be peeled off, and has good flexibility, and the thickness of the flexible high-molecular bonding layer is not more than 30 mu m; the base material adopts a BOPP film, and the BOPP film has high strength, thin thickness (28 mu m), rough surface after corona treatment and increased bonding strength with the flexible high polymer bonding layer.
The preferable technical scheme is that the energetic material comprises a simple substance hexogen explosive serving as a main body and a sensitized explosive serving as an auxiliary body, wherein the simple substance hexogen explosive accounts for 60-80 parts by weight, and the sensitized explosive accounts for 20-40 parts by weight; the hexogen explosive has high density and high detonation velocity, can be well used as a main explosive for explosive processing, and has low sensitivity and large critical thickness of detonation, so that the hexogen explosive needs to be sensitized by adding the explosive with low sensitivity to reduce the critical thickness of detonation, and the sensitized explosive can be HMX, CL-20, nitrate or chlorate. The polymer bonding material takes natural rubber emulsion as a main body and takes a performance improver as an auxiliary body, wherein the natural rubber emulsion accounts for 95-98 parts by weight, and the performance improver accounts for 2-5 parts by weight; the natural rubber emulsion has higher elasticity, can be used for shaping, has very good mechanical strength and good flexing resistance; the performance improver adopts plasticizer DOP, and the plasticizer can improve the shaping of the natural rubber and improve the mechanical property of the natural rubber.
The explosive adhesive tape provided by the invention realizes the purpose of processing the surface of a metal device by utilizing the impact effect of the explosive on the surrounding medium during explosion, and has the advantages of strong adhesive force, high tensile strength, good explosion effect and convenience in operation.
Further, the invention also provides a preparation method of the explosive adhesive tape, which comprises the following steps: 1) uniformly coating a flexible high polymer bonding layer on the lower surface of the flexible explosive, and then combining the flexible high polymer bonding layer with a base material; 2) and uniformly coating the pressure-sensitive adhesive on the upper surface of the flexible explosive. When the explosive adhesive tape is produced, the wound explosives with different width specifications can be manufactured according to requirements, and the use is convenient.
As a preferred technical scheme, the preparation method of the explosive loading adhesive tape specifically comprises the following steps: 1) weighing natural rubber emulsion and plasticizer DOP in proportion, pouring into a container, stirring and mixing uniformly to prepare explosive binder solution, namely a high-molecular binding material; 2) weighing a single hexogen explosive and a sensitized explosive in proportion, pouring the single hexogen explosive and the sensitized explosive into a container, and uniformly stirring the mixture by using a copper bar to prepare an energetic material; 3) weighing the polymer bonding material and the energetic material according to the proportion, uniformly mixing, and preparing into a sheet shape by a sheet making machine, namely a flexible explosive tablet; 4) coating polyurethane or VAE copolymer emulsion on the lower surface of the tablet and bonding the tablet and the BOPP film; 5) coating the waterborne polyurethane pressure-sensitive adhesive on the upper surface of the tablet, drying by warm air, and finally preparing the explosive adhesive tape.
The explosive tape adopts the mixture of natural rubber emulsion and plasticizer as a macromolecular binder solution, and has good flexibility and high mechanical strength. The explosive can be pasted on the surface of a material to be treated during use, the laminating performance is good, the using efficiency is high, and the operation is convenient. The adhesive property of the explosive is obviously improved by introducing the pressure-sensitive adhesive on the surface of the flexible explosive. The coating thickness of the pressure-sensitive adhesive is controllable, the explosion effect is good, the metal surface can be effectively protected from ablation, and the explosion impact effect is uniform. The high-strength base material is combined with the flexible explosive through the flexible adhesive, so that the tensile strength of the flexible explosive is obviously improved. The explosive has the advantages of strong adhesive force, high tensile strength, good explosion effect, convenient use and operation, simple process and the like, and has important application value in the special explosion field of eliminating welding stress by explosion and the like.
Drawings
FIG. 1 is a schematic structural view of the explosive tape of the present invention.
In the figure: 1-pressure sensitive adhesive, 2-flexible explosive, 3-flexible high polymer adhesive layer and 4-base material.
Detailed Description
The invention is further described with reference to specific examples below:
example 1
An explosive adhesive tape comprises a pressure-sensitive adhesive 1, a flexible explosive 2, a flexible polymer adhesive layer 3 and a base material 4 from top to bottom, and the structure of the explosive adhesive tape is shown in figure 1. The pressure-sensitive adhesive 1 is water-based polyurethane pressure-sensitive adhesive with the thickness of 25 mu m; the flexible explosive 2 consists of an energetic material and a high polymer bonding material, the thickness of the flexible explosive is 1.0mm, wherein the energetic material is prepared by mixing 60 parts by weight of simple substance hexogen explosive and 40 parts by weight of HMX, and the high polymer bonding material is prepared by mixing 95 parts by weight of natural rubber emulsion and 5 parts by weight of plasticizer DOP; the flexible polymer bonding layer 3 is made of polyurethane, and the thickness of the flexible polymer bonding layer is 15 micrometers; the base material 4 was a BOPP film having a thickness of 28 μm.
The preparation method of the explosive adhesive tape comprises the following steps: 1) pouring 95 parts by weight of natural rubber emulsion and 5 parts by weight of plasticizer DOP into a container, stirring and mixing uniformly to prepare an explosive binder solution, namely a high-molecular binding material for later use; 2) weighing 60 parts by weight of simple substance hexogen explosive and 40 parts by weight of HMX, pouring the mixture into a copper basin, and uniformly mixing the mixture by using a copper rod to prepare an energetic material; 3) pouring 85 parts by weight of energetic materials into 15 parts by weight of polymer bonding materials, uniformly mixing, and preparing sheet explosives with the thickness of 1.0mm, namely flexible explosive tablets, by a tablet making machine; 4) uniformly coating 15 mu m of polyurethane on the lower surface of the tablet, and bonding and fixing the tablet and the BOPP film through the polyurethane; 5) uniformly coating water-based polyurethane pressure-sensitive adhesive on the upper surface of the tablet, wherein the thickness of the water-based polyurethane pressure-sensitive adhesive is 25 mu m, and drying the surface of the tablet by warm air to prepare the coiled explosive adhesive tape.
The tensile strength of the explosive adhesive tape can reach 40N/cm, and the permanent viscosity can reach 20N/cm. The sustained viscosity is more than 5h at the temperature of minus 20 ℃, the explosive adhesive tape has good bonding property with the metal surface, the explosive has good explosion transfer performance after being detonated by a detonator, and the surface has no ablation trace.
Example 2
An explosive adhesive tape comprises a pressure-sensitive adhesive 1, a flexible explosive 2, a flexible polymer adhesive layer 3 and a base material 4 from top to bottom, and the structure of the explosive adhesive tape is shown in figure 1. The pressure-sensitive adhesive 1 is water-based polyurethane pressure-sensitive adhesive with the thickness of 45 mu m; the flexible explosive 2 consists of an energetic material and a high polymer bonding material, the thickness of the flexible explosive is 1.2mm, wherein the energetic material is prepared by mixing 80 parts by weight of simple substance hexogen explosive and 20 parts by weight of CL-20, and the high polymer bonding material is prepared by mixing 98 parts by weight of natural rubber emulsion and 2 parts by weight of plasticizer DOP; the flexible polymer bonding 3 layer adopts polyurethane, and the thickness of the flexible polymer bonding 3 layer is 25 mu m; the base material 4 was a BOPP film having a thickness of 28 μm.
The preparation method of the explosive adhesive tape comprises the following steps: 1) pouring 98 parts by weight of natural rubber emulsion and 2 parts by weight of plasticizer DOP into a container, stirring and mixing uniformly to prepare an explosive binder solution, namely a high-molecular binding material for later use; 2) weighing 80 parts by weight of simple substance hexogen explosive and 20 parts by weight of CL-20, pouring the mixture into a copper basin, and uniformly mixing the mixture by using a copper bar to prepare an energetic material; 3) pouring 90 parts by weight of energetic materials into 10 parts by weight of polymer bonding materials, uniformly mixing, and preparing sheet explosives with the thickness of 1.2mm, namely flexible explosive tablets, by a tablet making machine; 4) uniformly coating polyurethane with the thickness of 25 mu m on the lower surface of the tablet, and bonding and fixing the tablet and the BOPP film through the polyurethane; 5) uniformly coating water-based polyurethane pressure-sensitive adhesive on the upper surface of the tablet, wherein the thickness of the water-based polyurethane pressure-sensitive adhesive is 45 mu m, and drying the surface of the tablet by warm air to prepare the coiled explosive adhesive tape.
The tensile strength of the explosive adhesive tape can reach 35N/cm, and the permanent viscosity can reach 25N/cm. The sustained viscosity is more than 5h at the temperature of minus 20 ℃, the explosive adhesive tape has good bonding property with the metal surface, the explosive has good explosion transfer performance after being detonated by a detonator, and the surface has no ablation trace.
Example 3
An explosive adhesive tape comprises a pressure-sensitive adhesive 1, a flexible explosive 2, a flexible polymer adhesive layer 3 and a base material 4 from top to bottom, and the structure of the explosive adhesive tape is shown in figure 1. The pressure-sensitive adhesive 1 is water-based polyurethane pressure-sensitive adhesive with the thickness of 50 mu m; the flexible explosive 2 consists of an energetic material and a high polymer bonding material, the thickness of the flexible explosive is 1.2mm, wherein the energetic material is prepared by mixing 80 parts by weight of simple substance hexogen explosive and 20 parts by weight of CL-20, and the high polymer bonding material is prepared by mixing 98 parts by weight of natural rubber emulsion and 2 parts by weight of plasticizer DOP; the flexible high polymer adhesive layer 3 adopts VAE copolymer emulsion, and the thickness of the emulsion is 30 mu m; the base material 4 was a BOPP film having a thickness of 28 μm.
The preparation method of the explosive adhesive tape comprises the following steps: 1) pouring 96 parts by weight of natural rubber emulsion and 4 parts by weight of plasticizer DOP into a container, stirring and mixing uniformly to prepare an explosive binder solution, namely a high-molecular binding material for later use; 2) weighing 70 parts by weight of simple substance hexogen explosive and 30 parts by weight of CL-20, pouring the mixture into a copper basin, and uniformly mixing the mixture by using a copper bar to prepare an energetic material; 3) pouring 88 parts by weight of energetic materials into 12 parts by weight of polymer bonding materials, uniformly mixing, and preparing sheet explosives with the thickness of 1.1mm, namely flexible explosive tablets, by a tablet making machine; 4) uniformly coating VAE copolymer emulsion with the thickness of 30 mu m on the lower surface of the tablet, and bonding and fixing the tablet and the BOPP film through the VAE copolymer emulsion; 5) and uniformly coating aqueous polyurethane pressure-sensitive adhesive on the upper surface of the tablet, wherein the thickness of the aqueous polyurethane pressure-sensitive adhesive is 50 mu m, and drying the surface of the tablet by warm air to prepare the coiled explosive adhesive tape.
The tensile strength of the explosive adhesive tape can reach 38N/cm, and the permanent viscosity can reach 23N/cm. The sustained viscosity is more than 5h at the temperature of minus 20 ℃, the explosive adhesive tape has good bonding property with the metal surface, the explosive has good explosion transfer performance after being detonated by a detonator, and the surface has no ablation trace.
It should be understood that the foregoing description is only illustrative of the preferred embodiments of the present invention, and that the embodiments of the present invention are not limited by the foregoing examples, but it should be understood that numerous other modifications and embodiments can be devised by those skilled in the art that will fall within the spirit and scope of the principles of this invention.

Claims (2)

1. An explosive tape, characterized in that: the explosive is composed of a pressure-sensitive adhesive, a flexible explosive, a flexible high-molecular bonding layer and a base material from top to bottom; the pressure-sensitive adhesive adopts water-based polyurethane pressure-sensitive adhesive; the flexible explosive consists of 85-90 parts by weight of energetic materials and 10-15 parts by weight of polymer bonding materials; the flexible high-molecular adhesive layer adopts polyurethane or VAE copolymer emulsion; the substrate material adopts a BOPP film; the energetic material is composed of a simple substance hexogen explosive serving as a main body and a sensitized explosive serving as an auxiliary body, wherein the simple substance hexogen explosive accounts for 60-80 parts by weight, and the sensitized explosive accounts for 20-40 parts by weight; the polymer bonding material takes natural rubber emulsion as a main body and takes a performance improver as an auxiliary body, wherein the natural rubber emulsion accounts for 95-98 parts by weight, and the performance improver accounts for 2-5 parts by weight; the sensitized explosive adopts HMX, CL-20, nitrate or chlorate; the performance improver adopts plasticizer DOP;
the preparation method of the explosive adhesive tape comprises the following steps: 1) Uniformly coating a flexible high polymer bonding layer on the lower surface of the flexible explosive, and then combining the flexible high polymer bonding layer with a base material; 2) and uniformly coating the pressure-sensitive adhesive on the upper surface of the flexible explosive.
2. The method of making an explosive tape according to claim 1, comprising the steps of: 1) Weighing natural rubber emulsion and plasticizer DOP in proportion, pouring into a container, stirring and mixing uniformly to prepare explosive binder solution, namely a high-molecular binding material; 2) weighing a single hexogen explosive and a sensitized explosive in proportion, pouring the single hexogen explosive and the sensitized explosive into a container, and uniformly stirring the mixture by using a copper bar to prepare an energetic material; 3) weighing the polymer bonding material and the energetic material according to the proportion, uniformly mixing, and preparing into a sheet shape by a sheet making machine, namely a flexible explosive tablet; 4) coating polyurethane or VAE copolymer emulsion on the lower surface of the tablet and bonding the tablet and the BOPP film; 5) coating the waterborne polyurethane pressure-sensitive adhesive on the upper surface of the tablet, drying by warm air, and finally preparing the explosive adhesive tape.
CN201911126608.8A 2019-11-18 2019-11-18 Explosive adhesive tape and preparation method thereof Active CN110713427B (en)

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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463022A1 (en) * 1989-03-13 1992-01-02 Secr Defence Brit Pyrotechnic materials.
CN202201858U (en) * 2011-09-09 2012-04-25 周耐龙 Thin film substrate box strengthening and reinforcing tape
CN104227221A (en) * 2014-08-21 2014-12-24 中国科学技术大学 Preparation of explosive and explosion lamination method of texture interface

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0463022A1 (en) * 1989-03-13 1992-01-02 Secr Defence Brit Pyrotechnic materials.
CN202201858U (en) * 2011-09-09 2012-04-25 周耐龙 Thin film substrate box strengthening and reinforcing tape
CN104227221A (en) * 2014-08-21 2014-12-24 中国科学技术大学 Preparation of explosive and explosion lamination method of texture interface

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