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Quantitative detection method for dehumidification of filler particles and matrix interface after propellant moisture absorption

A technology for filler particles and propellants, which is applied in the field of physical parameter detection of composite solid propellants, can solve the problem that the morphology of the tensile section cannot be quantitatively characterized, the degree of dehumidification cannot be quantitatively reflected, and the microstructure changes of the interface between the filler particles and the matrix cannot be expressed. and other problems, to achieve the effect of convenient operation and scientific method

Active Publication Date: 2020-04-14
HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Its technical characteristics and main defects are: either it can only reflect the change rule qualitatively, but cannot quantitatively reflect the degree of dehumidification; or although it can observe the degree of dehumidification, it cannot describe the microstructure change of the interface between filler particles and matrix; Or limited by the observation field of view and magnification, it can only qualitatively characterize the dehydration state of the interface between the filler particles and the matrix, but cannot quantitatively characterize the tensile cross-sectional morphology

Method used

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  • Quantitative detection method for dehumidification of filler particles and matrix interface after propellant moisture absorption
  • Quantitative detection method for dehumidification of filler particles and matrix interface after propellant moisture absorption
  • Quantitative detection method for dehumidification of filler particles and matrix interface after propellant moisture absorption

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Example 1: Dehumidification detection of the interface between the filler particles and the matrix of the sample under the conditions of 20°C and a relative humidity of 85.1%.

[0011] Step 1, sample preparation and condition selection stage, the composite solid propellant selected for the sample is a solid particle filled composite material, the sample is prepared into a dumbbell-shaped test piece, and the test environment conditions are: temperature 20°C, relative humidity 85.1%.

[0012] (1) Referring to the OIML_R121-1996 standard of the International Legal Metrology Certificate and the long-term storage temperature of the propellant sample, determine 20°C and a relative humidity of 85.1% as the test environment required for the test.

[0013] (2) Prepare the composite solid propellant into a standard dumbbell-shaped specimen.

[0014] Step 2, parameter detection and image processing stage, through detection, obtain the mechanical performance parameters of the compo...

Embodiment 2

[0023] Example 2: Dehumidification detection of the interface between the filler particles and the matrix of the sample under the conditions of 20°C and a relative humidity of 75.5%.

[0024] Step 1, sample preparation and condition selection stage, the composite solid propellant selected for the sample is a solid particle filled composite material, the sample is prepared into a dumbbell-shaped test piece, and the test environment conditions are: temperature 20°C, relative humidity 75.5%.

[0025] (1) Referring to the OIML_R121-1996 standard of the International Legal Metrology Certificate and the long-term storage temperature of the propellant sample, determine 20°C and a relative humidity of 75.5% as the test environment required for the test.

[0026] (2) Prepare the composite solid propellant into a standard dumbbell-shaped specimen.

[0027] Step 2, parameter detection and image processing stage, through detection, obtain the mechanical performance parameters of the compo...

Embodiment 3

[0036] Example 3: Dehumidification detection of the interface between the filler particles and the matrix of the sample under the conditions of 20°C and a relative humidity of 59.1%.

[0037] Step 1, sample preparation and condition selection stage, the composite solid propellant selected for the sample is a solid particle filled composite material, the sample is prepared into a dumbbell-shaped test piece, and the test environment conditions are: temperature 20°C, relative humidity 59.1%.

[0038] (1) Referring to the OIML_R121-1996 standard of the International Legal Metrology Certificate and the long-term storage temperature of the propellant sample, determine 20°C and a relative humidity of 59.1% as the test environment required for the test.

[0039] (2) Prepare the composite solid propellant into a standard dumbbell-shaped specimen.

[0040] Step 2, parameter detection and image processing stage, through detection, obtain the mechanical performance parameters of the compo...

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Abstract

The invention is a quantitative detection method for dehumidifying the interface between filler particles and matrix after moisture absorption of composite solid propellant for rocket solid fuel detection. It includes steps such as sample preparation and condition selection, parameter detection and image processing, data processing and mathematical modeling; during sample preparation and condition selection, the sample is prepared into a dumbbell-shaped specimen, and normal temperature and different humidity states are selected as the test environmental conditions. . During parameter detection and image processing, the mechanical property parameters and tensile section macro photos of the propellant sample at different times of moisture absorption are obtained, image processing, conversion and analysis of the tensile section are performed, and the detachment on the tensile section of the sample is set and calculated. The ratio of wet filler particles to the tensile cross-sectional area is the dehumidification rate. During data processing and mathematical modeling, a mathematical model is established to characterize the quantitative mathematical relationship between propellant sample mechanical property data and dehumidification rate, and to obtain the wet aging performance index of the sample. The invention also has the advantages of scientific method, convenient operation, cost saving and easy promotion.

Description

technical field [0001] The invention relates to a physical parameter detection technology of a composite solid propellant, in particular to a quantitative detection method for the dehumidification of filler particles and matrix interface after the propellant absorbs moisture. Background technique [0002] Composite solid propellant products will inevitably be affected by ambient temperature and humidity during production, storage, transportation, testing and use. Moisture absorption of composite solid propellants will lead to denaturation of materials and product deterioration, seriously affecting the storage and use of products. After the composite solid propellant absorbs moisture, one of the main reasons for the decline in mechanical properties is the deterioration of the bonding performance of the filler particle-matrix bonding interface. Under small stress, the interface between the binder matrix and the solid filler particles and its A high local stress-strain field i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N19/04G06F30/20G06T5/00G06T7/10
CPCG01N19/04G06T2207/20032G06F30/20G06T5/94G06T5/92G06T5/70
Inventor 肖旭赵程远彭松李洪旭曹蓉周晓杨秦沛文
Owner HUBEI INST OF AEROSPACE CHEMOTECHNOLOGY