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A kind of polymer pressure-sensitive paint and its preparation method and application

A polymer and sensitive paint technology, applied in aerodynamic tests, instruments, machine/structural parts testing, etc., can solve problems such as poor mechanical properties and low pressure sensitivity, and achieve fast response, high sensitivity, and wide application foreground effect

Active Publication Date: 2022-02-08
SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the linear polymer pressure-sensitive paint has low pressure sensitivity and poor mechanical properties.

Method used

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  • A kind of polymer pressure-sensitive paint and its preparation method and application
  • A kind of polymer pressure-sensitive paint and its preparation method and application
  • A kind of polymer pressure-sensitive paint and its preparation method and application

Examples

Experimental program
Comparison scheme
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Embodiment 1

[0042] In this example, the polymer pressure-sensitive paint is prepared by the following preparation method, and the process is as follows:

[0043]

[0044] Specifically include the following steps:

[0045] (1) Synthesis of polydimethylsiloxane initiator:

[0046]2.335g (0.5mmoL) of monohydroxypolydimethylsiloxane (n=79) was dissolved in 30mL of tetrahydrofuran (THF), and 0.506g (5mmoL) of triethylamine (Et 3 N), then add 1.150 g (5 mmoL) 2-bromoisobutyryl bromide dropwise with a constant pressure dropping funnel, and stir in an ice bath for 72 hours. After the reaction, the product was suction filtered, and the filtrate was spin-dried, then dissolved in dichloromethane, and extracted with pure water several times. An appropriate amount of anhydrous magnesium sulfate was then added to the organic phase, filtered after 2 hours, and the obtained solution was rotary evaporated to obtain 1.657 g of the product with a yield of 68%. 1 H-NMR (400MHz, CDCl 3 ,(ppm)):0.01(m,4...

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Abstract

The invention provides a polymer pressure-sensitive paint and its preparation method and application. The polymer pressure-sensitive paint has a structure shown in formula I. The polymer pressure-sensitive paint of the present invention is composed of polydimethylsiloxane, methyl Composed of isobutyl acrylate and polymerizable tetraphenylporphyrin platinum, the synthesis process is simple and controllable. The polymer can be used in the test with a pressure range of 10‑190kPa. It has a fast response speed and a sensitivity of 0.82% / kPa. It has high sensitivity and can be applied to the load analysis of various aircraft surfaces and their various parts. Application prospects.

Description

technical field [0001] The invention belongs to the technical field of pressure sensitive materials, and relates to a polymer pressure sensitive paint and its preparation method and application. Background technique [0002] The surface pressure test is very important in the aerodynamic test. The surface pressure test is usually used in the load analysis of the aircraft and its various parts, and the study of special hydrodynamic phenomena. The traditional surface pressure test needs to open pressure measuring holes on the surface of the tested model, and arrange pressure sensors in an array for measurement to obtain the surface pressure of the tested model. This method is simple and easy to implement and has high measurement accuracy, but the preparation process of this method is very complicated, the test cycle is long, the test cost is high, the pressure information obtained is not continuous distribution, and is affected by factors such as the model structure, so the tra...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C09D153/00C08F293/00C08F220/18C08F230/04G01M9/06
CPCC09D153/00C08F293/005C08F220/1804C08F230/04G01M9/06C08F2500/26
Inventor 田颜清史佳艳
Owner SOUTH UNIVERSITY OF SCIENCE AND TECHNOLOGY OF CHINA