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Propellant raw material water absorption testing device and testing method

A test device and propellant technology, which is applied in the field of test devices for the water absorption of propellant raw materials, can solve the problems of high test cost and low reliability, and achieve the effects of easy implementation, simple operation, simple and convenient test and result analysis

Inactive Publication Date: 2021-05-28
XIAN AEROSPACE CHEM PROPULTION PLANT
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] In order to overcome the shortcomings of low reliability and high test cost in the prior art, the present invention proposes a propellant raw material water absorption test device and test method

Method used

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  • Propellant raw material water absorption testing device and testing method
  • Propellant raw material water absorption testing device and testing method
  • Propellant raw material water absorption testing device and testing method

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Embodiment Construction

[0031] This embodiment is a test device for the water absorption of propellant raw materials, including a constant temperature and humidity device and a data acquisition device. The constant temperature and humidity device includes a humidifier 1 , an electric heater 7 , an air circulation fan 8 , an electronic balance 12 , a temperature and humidity sensor 10 and a thermal insulation shell 9 . The humidifier 1 is located outside the insulation layer; the outlet of the humidifier communicates with the humidifier nozzle 6 through the humidifier pipeline 2, and a valve is connected to the humidifier pipeline; the humidifier nozzle 6 of the humidifier is located layer lumen top. The air circulation blower 8 is installed in the insulation layer, and is located below the nozzle of the humidifier. Two electric heaters 7 are installed in this insulation layer, and are positioned at the both sides of this air circulation fan. A temperature and humidity sensor 10 is arranged below th...

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Abstract

The invention discloses a propellant raw material water absorption testing device and testing method. A humidifier is located outside a heat preservation layer and communicates with a humidifier nozzle; the humidifier is positioned at the top end of the inner cavity of the insulating layer. The air circulating fan is positioned below the humidifier nozzle. The two electric heaters are installed in the heat preservation layer and located on the two sides of the air circulation fan. A temperature and humidity sensor is arranged below the air circulating fan. The weighing method is matched with the constant-temperature and constant-humidity chamber to ensure that the change data of the mass of the propellant raw material along with the moisture absorption time is acquired under the condition of certain constant temperature and humidity. The change of the moisture absorption performance of the propellant raw material along with the temperature, the humidity and the time is emphatically investigated, the influence of the temperature, the humidity and the time on the moisture absorption performance of the propellant raw material is analyzed so as to pay attention to prevention of the influence caused by moisture during propellant production, and the method has the advantages of simplicity in operation, real-time monitoring and easiness in implementation.

Description

technical field [0001] The invention belongs to the field of propellant charge, in particular to a test device and method for water absorption of propellant raw materials. [0002] technical background [0003] In the field of solid rocket propellant charges, the control of the moisture content of the raw materials used is particularly strict, because moisture will indirectly affect various properties of the propellant, such as tensile properties, elongation at break, burning rate, and tensile modulus etc., the most direct is to affect its curing performance. According to existing research, most liquids have hygroscopic properties. In actual production or application, we don't want hygroscopicity to work, or we want to know how much water can be absorbed by a liquid or solid of a certain component under a certain temperature and humidity conditions, and how much water absorption changes with time, so as to eliminate moisture. or product performance. Usually, one molecule o...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N5/02G01N13/00
CPCG01N5/025G01N13/00
Inventor 刘训伟刘颖王博马元明周涛宋子鸣周晨梁虎
Owner XIAN AEROSPACE CHEM PROPULTION PLANT
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