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Non-destructive detection method of storage ageing performance of propellant/liner bonding interface

A non-destructive detection, storage aging technology, applied in the direction of measuring devices, material analysis through optical means, instruments, etc., can solve the problem of reflecting the NEPE propellant/liner bonding interface, etc., to achieve convenient detection process and parameter analysis Reliable, data-processing optimized results

Inactive Publication Date: 2017-01-18
HUBEI INST OF AEROSPACE CHEMOTECH
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] As for the propellant / liner products of wall-mounted solid rocket motors, due to the large difference between the actual state of the bonded interface and the standard specimen in the free state, it is also technically difficult to obtain test samples for the bonded interface non-destructively , so it is not suitable to use the standard rectangular specimen tear-off strength evaluation method to reflect the performance of the NEPE propellant / liner bonding interface

Method used

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  • Non-destructive detection method of storage ageing performance of propellant/liner bonding interface
  • Non-destructive detection method of storage ageing performance of propellant/liner bonding interface
  • Non-destructive detection method of storage ageing performance of propellant/liner bonding interface

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Experimental program
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Effect test

Embodiment 1

[0017] step one,

[0018] (1) Put the standard rectangular specimen of NEPE propellant into an explosion-proof aging oven with a specified temperature of 70°C for accelerated aging, take samples regularly to measure the mechanical properties, and obtain the change data and rules of the tear-off strength of the standard rectangular specimen with aging temperature and aging time .

[0019] (2) Preparation of infrared spectrum test samples. First, use a special standard rectangular sample preparation tool to separate the required sample (that is, the sample composed of propellant / liner / insulation layer) between the steel plate and the insulation layer; secondly, use a biological microtome to cut off the excess NEPE Propellant, so that the sample only retains about 50 μm of NEPE propellant material (the so-called interface material) at the bonding interface formed between the NEPE propellant and the liner.

[0020] (3) The sample with about 50 μm of the interface material retain...

Embodiment 2

[0033] step one,

[0034] (1) Put the standard rectangular specimen into an explosion-proof aging oven with a specified temperature of 60°C for accelerated aging, and regularly sample and test its mechanical properties to obtain the data and rules of the standard rectangular specimen with aging temperature and aging time.

[0035] (2) Preparation of infrared spectrum test samples. First, use a special standard rectangular specimen sample preparation tool to separate the required sample (that is, the sample composed of propellant / lining layer / thermal insulation layer) between the steel plate and the thermal insulation layer of the standard rectangular specimen; secondly, use biological slices The excess NEPE propellant is cut off by machine, so that only about 50 μm of NEPE propellant material (the so-called interface material) remains at the bonding interface formed between the NEPE propellant and the liner.

[0036] (3) The sample with about 50 μm of the interface material r...

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Abstract

The invention relates to a nondestructive detection method of the storage ageing performance of a propellant / liner bonding interface, used for spaceflight fuel nondestructive detection. The method comprises the following steps: sample preparation and parameter detection, data analysis and mathematic modeling, and parameter calculation and data processing, wherein the sample preparation and parameter detection step comprises contrastive sample preparation and contrast parameter establishment which are used for macroscopic detection, and detection sample preparation and infrared spectrum detection which are used for microanalysis; infrared spectrogram analysis and establishment of a mathematical relationship are carried out in the data analysis and mathematic modeling step; and in the parameter calculation and data processing step, peak separation software of an infrared spectrometer is used to acquire data, and the data is substituted to the mathematical relationship, and parameter calculation is carried out to acquire a performance parameter. The method adopts a tiny amount sampling mode, infrared spectrum detection and mathematic modeling to realize spectrogram analysis and data processing in order to obtain the bonding performance index of the propellant / liner bonding interface. The method has the characteristics of convenient detection process, good data repeatability, reliable parameter analysis and optimal data processing.

Description

technical field [0001] The invention relates to a material non-destructive testing technology in the polymer chemistry field of aerospace fuel, in particular to a non-destructive testing method for the storage aging performance of the propellant / liner bonding interface. Background technique [0002] Usually, the performance evaluation indexes of nitrate plasticized polyether NEPE propellant / liner bonding interface include bonding performance, bonding deterioration parameters, storage performance and storage life, etc. The evaluation method in the prior art mainly involves two aspects, the test specimen and the evaluation parameter. The test specimen is a standard rectangular specimen, and the evaluation parameter is the tear-off strength, that is, the "standard rectangular specimen tear-off strength evaluation method". This method has limited applicable objects and macroscopic evaluation parameters, and has certain advantages for formula development and product selection of ...

Claims

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Application Information

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IPC IPC(8): G01N21/3563
Inventor 彭松池旭辉曹蓉胡伟张峰涛杨根常华朱学珍封学华
Owner HUBEI INST OF AEROSPACE CHEMOTECH
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