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Device and method for removing low molecular substances in casting PBX slurry

A molecular substance and slurry technology, which is applied in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of low liquid phase content, reduced charge safety performance, and high viscosity, avoiding bubble defects and improving the internal quality of the charge. and safety performance

Active Publication Date: 2013-04-24
INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Casting PBX is composed of liquid-phase polymer bonding system and solid-phase high-energy single-substance explosives. Compared with molten-cast explosives with a liquid phase of about 35%, the liquid phase content in the pouring PBX formula is about 10%, and the liquid phase content is relatively low, and the liquid phase The main components are high-molecular prepolymers with relatively high viscosity, so the viscosity of pouring PBX slurry is relatively high, and the unreacted small molecules of styrene in the raw materials and low-molecular substances such as air introduced during the mixing process are not easy to escape, resulting in Bubble defects appear in the charge product, which greatly reduces the safety performance of the charge

Method used

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  • Device and method for removing low molecular substances in casting PBX slurry
  • Device and method for removing low molecular substances in casting PBX slurry
  • Device and method for removing low molecular substances in casting PBX slurry

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] A device for removing low-molecular substances in pouring PBX slurry, such as figure 1 As shown, the device includes a storage hopper 1, a distribution tray 2 and a receiving hopper 3, wherein the storage hopper 1 and the receiving hopper 3 are sealed and connected up and down as a whole, and the distribution tray 2 is sealed and connected to the end surface of the discharge port of the storage hopper 1 , the distributing holes with a diameter range of 5-8mm are distributed on the distributing tray 2, such as figure 2 shown. A cock valve 11 is installed on the neck of the discharge port of the storage hopper 1, a nozzle 31 connected to a vacuum device is provided on the side of the hopper 3, and a cock valve 32 is installed on the neck of the discharge port. 3 becomes a confined space.

[0024] Further, the connection between the storage hopper 1 and the receiving hopper 3, the distribution tray 2 and the storage hopper 1 is all connected by screws, and the sealing i...

Embodiment 2

[0035] A device for removing low-molecular substances in pouring PBX slurry, such as figure 1 As shown, the device includes a storage hopper 1, a distribution tray 2 and a receiving hopper 3, wherein the storage hopper 1 and the receiving hopper 3 are sealed and connected up and down as a whole, and the distribution tray 2 is sealed and connected to the end surface of the discharge port of the storage hopper 1 , distribution holes with a diameter range of 3.5-5mm are distributed on the distribution tray 2, such as figure 2 shown. A cock valve 11 is installed on the neck of the discharge port of the storage hopper 1, a nozzle 31 connected to a vacuum device is provided on the side of the hopper 3, and a cock valve 32 is installed on the neck of the discharge port. 3 becomes a confined space.

[0036] Further, the connection between the storage hopper 1 and the receiving hopper 3, the distribution tray 2 and the storage hopper 1 is all connected by screws, and the sealing is ...

Embodiment 3

[0047] A device for removing low-molecular substances in pouring PBX slurry, such as figure 1 As shown, the device includes a storage hopper 1, a distribution tray 2 and a receiving hopper 3, wherein the storage hopper 1 and the receiving hopper 3 are sealed and connected up and down as a whole, and the distribution tray 2 is sealed and connected to the end surface of the discharge port of the storage hopper 1 , the distributing holes with a diameter range of 2-4mm are distributed on the distributing tray 2, such as figure 2 shown. A cock valve 11 is installed on the neck of the discharge port of the storage hopper 1, a vacuum device 31 is connected to the side of the hopper 3, and a cock valve 32 is installed on the neck of the discharge port. When the two cock valves 11 and 32 are closed at the same time, the hopper 3 becomes an airtight space.

[0048] Further, the connection between the storage hopper 1 and the receiving hopper 3, the distribution tray 2 and the storage...

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Abstract

The invention discloses a device for removing low molecular substances in casting PBX slurry. The device comprises a storage hopper, a distribution tray and a receiving hopper, wherein the storage hopper and the receiving hopper are connected into an integral body in an up-and-down sealing mode; the distribution tray is connected and sealed in a discharge port end surface of the storage hopper; distribution holes with diameters of 2-8mm are distributed in the distribution tray; the neck of the discharge port of the storage hopper is provided with a plug valve; the side surface of the receiving hopper is connected with a vacuum extractor, and the neck of the discharge port is provided with a plug valve; and when the two plug valves are closed simultaneously, the receiving hopper can become a closed space. The invention also discloses a method for removing low molecular substances in casting PBX slurry by using the device. The invention can be used for successfully removing air, styrene and other low molecular substances in the casting PBX slurry, and avoid the defects of bubbles in the slurry, thereby enhancing the internal quality and safety performance of the casting PBX slurry. The invention has wide application prospects in conventional warhead PBX slurry.

Description

technical field [0001] The invention belongs to the technique of removing low-molecular substances in the medicine slurry in the field of energetic materials, and in particular relates to a device and method for removing low-molecular substances in pouring PBX medicine slurry Background technique [0002] Cast PBX is an excellent mixed explosive, which has the advantages of high energy, low sensitivity, excellent mechanical properties and good environmental adaptability. At present, this explosive has become the mainstream new mixed explosive in the world. Casting PBX is composed of liquid-phase polymer bonding system and solid-phase high-energy single-substance explosives. Compared with molten-cast explosives with a liquid phase of about 35%, the liquid phase content in the pouring PBX formula is about 10%, and the liquid phase content is relatively low, and the liquid phase The main components are high-molecular prepolymers with relatively high viscosity, so the viscosity ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C06B21/00
Inventor 兰昌义唐长兴李尚斌罗观刘绪望
Owner INST OF CHEM MATERIAL CHINA ACADEMY OF ENG PHYSICS
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