Method for characterizing multi-phase interface of polymer bonded explosive

A technology for bonding explosives and polymers, which is applied in the direction of measuring devices, instruments, scientific instruments, etc., and can solve the problem of being unable to distinguish different types of internal interfaces

Inactive Publication Date: 2018-07-24
INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to overcome the disadvantage that the existing PBX interface characterization technology cannot distinguish different types of interfaces inside, the present invention provides a method for charact

Method used

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  • Method for characterizing multi-phase interface of polymer bonded explosive
  • Method for characterizing multi-phase interface of polymer bonded explosive
  • Method for characterizing multi-phase interface of polymer bonded explosive

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0034] Example 1 Controlling the contrast of PBX based on deuterated polyurethane

[0035] The contrast of PBX is regulated by using fully deuterated polyurethane and non-deuterated polyurethane blend binder. The mass ratio between explosive crystals and binder in the PBX sample is 95:5, and the ratio shown in Table 1 is adopted. Five kinds of molding powders with a proportion of components are used to control the contrast difference between HMX explosive crystals and polyurethane binders, named HdP1, HdP2, HdP3, HdP4 and HdP5, where the binder of HdP1 is non-deuterated polyurethane , the binding agent of HdP5 is all deuterated polyurethane, selects 1-2-dichloroethane as the solvent of polyurethane and granulates by water suspension method to obtain modeling powder.

[0036] Table 1. Composition design and neutron scattering length density of a series of contrast-transformed PBX samples in Example 1

[0037]

[0038]The molding powder was molded under pressures of 5kN, 14k...

Embodiment 2

[0045] Example 2 Controlling the contrast of PBX based on deuterated HMX

[0046] The contrast of the PBX is regulated by using all-deuterated HMX and non-deuterated HMX blended explosive crystals. The mass ratio between the explosive crystals and the binder in the PBX sample is 95:5. A molding powder with a component ratio is used to control the contrast difference between the HMX explosive crystal and the fluororubber binder, named dHP1, dHP2, dHP3, dHP4 and dHP5, where the explosive crystal of dHP1 is non-deuterated HMX, The explosive crystal of dHP5 is all-deuterated HMX, and ethyl acetate is used as the solvent of fluororubber and granulated by water suspension method to obtain modeling powder.

[0047] Table 3 Composition design and neutron scattering length density of a series of contrast-transformed PBX samples in Example 2

[0048]

[0049] The molding powders were respectively molded under a pressure of 14kN (corresponding to a sample pressure of 178MPa) to obtai...

Embodiment 3

[0053] Example 3 Controlling the contrast of PBX based on deuterated fluororubber

[0054] The contrast of PBX is regulated by using all-deuterated fluororubber and non-deuterated fluororubber blend binder. The mass ratio between TATB explosive crystals and binder in the PBX sample is 95:5. The molding powders with the five component ratios shown are used to control the contrast difference between the explosive crystal and the fluororubber binder, named as TdF1, TdF2, TdF3, TdF4 and TdF5, and the binder of TdF1 is non- Deuterated fluororubber, the binder of TdF5 is full deuterated fluororubber, select ethyl acetate as the solvent of fluororubber and water suspension method to granulate to obtain modeling powder.

[0055] Table 4. Composition design and neutron scattering length density of a series of contrast-transformed PBX samples in Example 3

[0056]

[0057] The molding powders were respectively molded under a pressure of 14kN (corresponding to a sample pressure of 17...

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Abstract

The invention discloses a method for characterizing a multi-phase interface of polymer bonded explosive. The method comprises the following steps: preparing a series of PBX samples composed of explosive crystals and additives, performing a small angle neutron scattering experiment on the prepared samples, performing absolute strength correction on small angle neutron scattering experimental data,fitting the experimental data based on a Porod theorem, and solving linear system of equations, thereby obtaining interfacial areas between the explosive crystals and adhesives, between the adhesivesand holes and between the explosive crystals and the holes. The method is capable of directly providing numerical values of the interfacial areas among the explosive crystals, the adhesives and the holes in the PBX explosive, and is an effective method for characterizing a complex multi-phase interface inside a multi-component PBX material. The method provides the numerical values of various areas, and is an important foundation of deeply understanding a structure-function relationship of the PBX explosive, optimizing the preparation process and realizing performance improvement study.

Description

technical field [0001] The invention relates to a method for characterizing the internal interface of polymer bonded explosives, in particular to a method for classifying and quantitatively characterizing the internal multiphase interface of polymer bonded explosives. Background technique [0002] Polymer bonded explosive (Polymer Bonded Explosive, PBX) is a composite explosive prepared by a series of processes from simple explosive crystals, high polymer binders and several additives, which makes full use of the detonation performance and The excellent mechanical properties of polymer materials have a wide range of applications in the fields of national defense technology and national economy. PBX explosives are subject to various stress and temperature loads during charging, transportation, storage and use, requiring them to have good mechanical properties. The mechanical properties of PBX explosives mainly depend on the interface properties between the internal component...

Claims

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Application Information

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IPC IPC(8): G01N23/202
CPCG01N23/202
Inventor 白亮飞田强闫冠云邹林孙光爱刘渝刘栋龚建李新喜李昊彭梅陈良
Owner INST OF NUCLEAR PHYSICS & CHEM CHINA ACADEMY OF
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