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A method and sensor for fast on-line monitoring of solid propellant positive vulcanization point

A technology of solid propellant and vulcanization point, which is applied in the direction of material impedance, etc., to achieve the effect of low cost and convenient operation

Active Publication Date: 2020-12-11
内蒙合成化工研究所
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The problem to be solved by the present invention is to provide a method for fast on-line monitoring of the positive vulcanization point of the solid propellant to solve the problem of determining the positive vulcanization point during the on-line monitoring of the solid propellant vulcanization process

Method used

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  • A method and sensor for fast on-line monitoring of solid propellant positive vulcanization point
  • A method and sensor for fast on-line monitoring of solid propellant positive vulcanization point
  • A method and sensor for fast on-line monitoring of solid propellant positive vulcanization point

Examples

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Embodiment

[0029] Example: Monitoring of positive vulcanization point of propellant in a certain type of solid rocket motor

[0030] Implementation steps:

[0031]The size of the combustion chamber of the solid rocket motor is Φ200mm×1500mm, and the propellant for the charge is a kind of hydroxyl-terminated polybutadiene as a binder, toluene diisocyanate as a curing agent, and ammonium perchlorate as an oxidant. A mature propellant with aluminum powder as the combustion agent. The piezoelectric sensor used is a circular chip, the piezoelectric material of the piezoelectric sensor used is lead zirconate titanate piezoelectric ceramics, the electrode material is silver electrode, and the size of the piezoelectric sensor is Φ10mm×0.2mm. The impedance detector used is an impedance analysis board. The temperature condition of the vulcanization process of the solid rocket motor is 70°C. According to the traditional positive vulcanization point monitoring method, the propellant has a positive...

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Abstract

The present invention relates to a method for rapid on-line monitoring of the optimum cure point of a solid propellant, and a sensor. The method comprises that a piezoelectric sensor is implanted into a monitored propellant sample to make the piezoelectric sensor and the propellant sample form an electromechanical impedance coupling structure; and during online detection of a propellant curing process by the piezoelectric sensor, the impedance change rate detected by the piezoelectric sensor is sequentially increased and decreased along with the increase of the curing time so as to draw an electromechanical impedance change rate-propellant curing time curve; and by analyzing the inflection point of the curve, the optimum cure point of the propellant is determined. According to the present invention, the method can be used for rapidly determining the optimum cure point of the propellant, can further be used for monitoring the curing process of the propellant, has advantages of low cost and convenient operation, cannot cause safety, quality and other negative interference to the monitored object, wherein the optimum cure point determination precision can be precise to the hour.

Description

technical field [0001] The present invention relates to a method for fast on-line monitoring of the positive vulcanization point of solid propellant, in particular to a method for fast on-line monitoring of the positive vulcanization point of propellant in a solid rocket motor, in order to use a piezoelectric sensor to monitor the vulcanization process of solid propellant on-line, And determine the positive vulcanization point. Background technique [0002] The positive vulcanization point of a solid propellant (abbreviation, propellant) refers to the initial time at which the slurry propellant is heated continuously at a certain temperature to basically complete the chemical crosslinking and the mechanical properties no longer change with the extension of the heating time. It is an important control parameter of the agent vulcanization process. The positive vulcanization point is the basis for the control of vulcanization time during the production of solid rocket motor ch...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N27/02
CPCG01N27/02
Inventor 梁玉龙孙杨赵云
Owner 内蒙合成化工研究所
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