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Detection method of trace migration components in thermal insulation layer in propellant bonding system

A detection method and technology of thermal insulation layer are applied in the field of detection of trace migration components of thermal insulation layer in propellant bonding system, and the effects of simple production process, accurate qualitative determination and high detection sensitivity are achieved.

Active Publication Date: 2018-05-18
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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Problems solved by technology

In the prior art, it is still possible to detect the known migration components of the heat insulation layer, but there is no ready-made technology for the detection of the unknown migration components of the heat insulation layer, especially the detection of trace migration components of the heat insulation layer

Method used

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  • Detection method of trace migration components in thermal insulation layer in propellant bonding system
  • Detection method of trace migration components in thermal insulation layer in propellant bonding system
  • Detection method of trace migration components in thermal insulation layer in propellant bonding system

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Embodiment Construction

[0011] The present invention will be further described in three groups below in conjunction with the examples.

[0012] The first group, qualitative determination of migration components of EPDM insulation layer.

[0013] Step 1, sample preparation: In the sample preparation stage, obtain the bonded test piece of EPDM insulation layer / butylene hydroxyl liner / propellant, cut the fresh bonded surface with a blade, and cut it into a flat and thin sheet-shaped test sample. The specifications of the inspection sample shall be no more than 5mm in thickness and no less than 500 × 500 μm² in area.

[0014] Step 2, condition selection: In the condition selection stage, the detection object is the trace migration component of the EPDM insulation layer / lining layer bonding surface, and the detection equipment is a time-of-flight secondary ion mass spectrometer (TOF-SIMS);

[0015] Step 3, spectrum acquisition: The selection conditions for spectrum acquisition are: primary ion source, vo...

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Abstract

The invention relates to a method for detecting trace migration components in a thermal insulation layer in a propellant bonding system used for non-destructive static analysis of aerospace polymer chemical fuels. The detection steps are: sample preparation, condition selection, map collection, and data analysis; during sample preparation, obtain the bonded test piece of the thermal insulation layer / lining layer / propellant, cut the fresh bonded surface with a blade, and make the sample to be tested; conditions When selecting, the detection object is the trace migration component of the thermal insulation layer / lining layer bonding surface, and the detection equipment is a time-of-flight secondary ion mass spectrometer; the selection conditions for spectrum collection are: primary ion source, voltage threshold, imaging method, target current value, vacuum state, acquisition time, ion mode, and calibration ion; it uses the time-of-flight secondary ion mass spectrometer to conduct qualitative determination and semi-quantitative analysis of the migration components of the adiabatic layer through spectrum acquisition and data analysis, and obtains its distribution status information. The invention also has the advantages of accurate qualitative and intuitive maps.

Description

technical field [0001] The invention relates to a secondary ion mass spectrometry analysis method of aerospace polymer chemical fuel, in particular to a method for detecting trace migration components of a thermal insulation layer in a propellant bonding system. Background technique [0002] In the solid propellant / liner / insulation layer bonding system, the migration components of the insulation layer are directly related to the interface bonding performance, so qualitative and quantitative detection is needed. In the prior art, it is still possible to detect the known migration components of the heat insulation layer, but there is no ready-made technology for the detection of the unknown migration components of the heat insulation layer, especially the detection of trace migration components of the heat insulation layer. Contents of the invention [0003] The object of the present invention is to provide a detection method for the trace migration components of the thermal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/62G01N1/28G01N27/622
Inventor 庞爱民聂海英黄志萍代春丽桑丽鹏章园园胡伟尹华丽蔡如琳刘发龙
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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