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

A molecular substance and slurry technology, applied in explosives, explosives processing equipment, offensive equipment, etc., can solve the problems of reduced safety performance of charges, low liquid phase content, air bubbles, etc., to improve the internal quality and safety performance of charges, The effect of avoiding bubble defects

Active Publication Date: 2015-01-07
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-weight 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 up and down as a whole, and the distribution tray 2 is sealed and connected to the end face of the discharge port of the storage hopper 1. , the distribution holes with a diameter of 5-8mm are distributed on the distribution plate 2, such as figure 2 shown. A plug valve 11 is installed on the neck of the discharge port of the storage hopper 1, a nozzle 31 connected to the vacuum device is installed on the side of the hopper 3, and a plug valve 32 is installed on the neck of the discharge port. When the two plug valves 11 and 32 are closed at the same time, the hopper is connected 3 becomes a confined space.

[0024] Further, the connection between the storage hopper 1 and the receiving hopper 3, and the material ...

Embodiment 2

[0035] A device for removing low-molecular-weight 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 up and down as a whole, and the distribution tray 2 is sealed and connected to the end face of the discharge port of the storage hopper 1. , the distribution holes with diameters ranging from 3.5-5mm are distributed on the distribution plate 2, such as figure 2 shown. A plug valve 11 is installed on the neck of the discharge port of the storage hopper 1, a nozzle 31 connected to the vacuum device is installed on the side of the hopper 3, and a plug valve 32 is installed on the neck of the discharge port. When the two plug valves 11 and 32 are closed at the same time, the hopper is connected 3 becomes a confined space.

[0036] Further, the connection between the storage hopper 1 and the receiving hopper 3, and th...

Embodiment 3

[0047] A device for removing low-molecular-weight 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 up and down as a whole, and the distribution tray 2 is sealed and connected to the end face of the discharge port of the storage hopper 1. , the distribution holes on the distribution plate 2 with a diameter of 2-4mm, such as figure 2 shown. A plug 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 receiving hopper 3, and a plug valve 32 is installed on the neck of the discharge port. When the two plug valves 11 and 32 are closed at the same time, the receiving hopper 3 becomes a closed space.

[0048] Further, the connection between the storage hopper 1 and the receiving hopper 3, and the material 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 technology of removing low-molecular substances from traditional Chinese 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] Casting 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 a mainstream new mixed explosive in the world. The cast PBX is composed of a liquid phase polymer bonding system and a solid phase high-energy elemental explosive. Compared with the molten-cast explosive with a liquid phase of about 35%, the liquid phase content in the cast PBX formula is about 10%, the liquid phase content is low, and the liquid phase content is about 10%. The components are mainly polymer prepolymers with relatively high viscosity...

Claims

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Application Information

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Patent Type & Authority Patents(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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