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Multi-arm high-molecular pressure sensitive paint for aerospace and preparation method thereof

An aerospace and polymer technology, which is applied in the field of multi-arm polymer pressure-sensitive paint for aerospace and its preparation, can solve the problems of complicated preparation process, long cycle, interference, etc., and achieves fast response speed, wide application and high sensitivity Effect

Active Publication Date: 2019-04-30
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Abstract
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AI Technical Summary

Problems solved by technology

This method is simple and easy to implement and has high measurement accuracy, but the obtained pressure information is not continuously distributed, and is affected by factors such as model structure and interference between adjacent holes.
At the same time, because the preparation process is very complicated, the cycle is long, and the cost is high, there are certain limitations in pressure measurement.

Method used

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  • Multi-arm high-molecular pressure sensitive paint for aerospace and preparation method thereof
  • Multi-arm high-molecular pressure sensitive paint for aerospace and preparation method thereof
  • Multi-arm high-molecular pressure sensitive paint for aerospace and preparation method thereof

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Embodiment Construction

[0042] For better illustrating the present invention, facilitate understanding technical scheme of the present invention, typical but non-limiting embodiment of the present invention is as follows:

[0043] Embodiments 1-5 of the present invention each provide a multi-arm polymer pressure-sensitive paint for aerospace, and the specific preparation method of the above-mentioned pressure-sensitive paint is as follows:

[0044] (1) Synthesis of precursors:

[0045] Dissolve 0.6789g (0.005mol) of pentaerythritol in 30ml of tetrahydrofuran (THF), add 6.0714g (0.060mol) of triethylamine (Et3N), then add 13.8480g (0.060mol) of dibromoisobutyryl dropwise with a dropping funnel Bromine, stirred in ice bath for 24 hours. After the reaction, the product was subjected to suction filtration, and then the solution obtained by suction filtration was spin-dried, then dissolved in ether, extracted twice with pure water, saturated sodium bicarbonate, and pure water respectively, and then added...

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Abstract

The invention provides multi-arm high-molecular pressure sensitive paint for aerospace and a preparation method thereof, the multi-arm high-molecular pressure sensitive paint is high in sensitivity and fast in response speed, can be widely applied to pressure tests of aerospace industry aircraft surfaces and various parts. In the testing process, the surface of a tested model is not damaged, the surface shape of the model is not limited, and the application range is wide; pressure information which is continuously distributed can be obtained, the measurement precision is high, and the test period is short.

Description

technical field [0001] The invention belongs to the field of aerospace materials, and relates to a multi-arm polymer pressure-sensitive paint for aerospace and a preparation method thereof. Background technique [0002] When designing and developing an aircraft, the first step is to design its shape, so that the aerodynamic force acting on the aircraft can be determined and its flight performance can be calculated. Therefore, by conducting tests in a wind tunnel and observing the interaction between the airflow in the tunnel and the test piece, the aerodynamic layout of the aircraft can be determined and its aerodynamic performance can be evaluated. In the wind tunnel test, the pressure test of the aircraft and its components can provide data for the calculation of the structural strength of the aircraft and its components and the study of the flow characteristics around the model. The traditional pressure measurement method needs to open pressure measuring holes on the sur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C09D143/00C08F220/24C08F220/18C08F230/04
CPCC08F220/18C08F220/24C09D143/00C08F220/1804C08F230/04
Inventor 田颜清史佳艳周毅飞
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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