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Device for testing thermal vacuum stability of high polymer material and method thereof

A technology for polymer materials and stability testing, which is applied in the field of chemical detection and can solve the problems of inability to continuously separate out small organic molecules, lack of small molecules, and difficulty in identifying colorless volatile organic compounds.

Active Publication Date: 2021-10-01
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005]1. Colorless volatile organic compounds are almost difficult to identify with the naked eye, lacking a method with display effect to qualitatively express the volatilization of small molecules
2. Unable to continuously and systematically observe the precipitation of small organic molecules
3. At present, there is no qualitative and quantitative detection method

Method used

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  • Device for testing thermal vacuum stability of high polymer material and method thereof
  • Device for testing thermal vacuum stability of high polymer material and method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] A thermal vacuum stability testing device for polymer materials, the testing device includes: a high-purity quartz tube, a vacuum device, and a heater.

[0040] Wherein, the heating tube vacuum device includes: a mechanical pump and a molecular pump.

[0041] The heater is used to heat the heating tube, and the heater is specifically a muffle furnace.

[0042] A volatile organic compound inspection component is placed in the high-purity quartz tube, which is an aluminum alloy silver-plated sheet.

[0043] The controller is communicatively connected with the vacuuming device for the heating tube, and is used to control the operation program of the vacuuming device for the heating chamber.

Embodiment 2

[0045] A kind of thermal vacuum stability test method of polymer material, described test method comprises the following steps:

[0046] The polymer material to be tested is a polymer sheet, specifically a patch composed of polyphenylene sulfide, epoxy resin, etc. and inorganic materials.

[0047] After fixing the polymer material sheet to be tested and the aluminum alloy silver-plated sheet, seal them together in a high-purity quartz tube, use a mechanical pump for 10 minutes, and then use a molecular pump for 10 minutes, so that the vacuum degree in the quartz tube is 10 -6 ~10 -4 Pa (high vacuum), sealed quartz tube.

[0048] Then, place the quartz tube in the muffle furnace and heat the quartz tube according to the following heating procedure:

[0049] At the beginning, the aluminum alloy silver-plated sheet is recorded as sample 0, and the temperature is first raised to 100 degrees Celsius and kept for 12 hours to obtain sample 1; then continue to heat sample 1 to 180 d...

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Abstract

The invention belongs to the field of chemical detection, and particularly relates to a device for testing thermal vacuum stability of high polymer material and a method thereof. The testing device comprises a heating pipe, a heating pipe vacuumizing device and a heater. A volatile organic compound inspection part is arranged in the heating pipe, the surface of the volatile organic compound inspection part is a plating layer or a coating containing at least one element of silver, iron, nickel or copper, or the volatile organic compound inspection part is a part containing at least one element of silver, iron, nickel or copper as a whole. According to the testing device and the testing method, if the organic matter is separated out, the organic matter and the volatile organic matter testing part are subjected to chemical reaction, so that the color of the volatile organic matter testing part is changed, and the color change can be identified by naked eyes. Therefore, the test device and the test method provided by the invention can qualitatively display the precipitation of the small organic molecule volatile matters in the high polymer material, namely the thermal vacuum stability of the high polymer material is detected.

Description

technical field [0001] The invention belongs to the field of chemical detection, and in particular relates to a testing device and a testing method for thermal vacuum stability of polymer materials. Background technique [0002] Small organic molecules are mostly contained in polymer composite materials, organic matter, etc. Under high temperature and vacuum conditions, small organic molecules are more likely to precipitate, adsorb and deposit on the surface of various precision devices. Under certain conditions, it will cause corrosion and oxidation to metal substrates. Detecting the corrosion of small organic molecules and metals under high temperature and vacuum is one of the important evaluation indicators for the stability of polymer composite materials and organic matter. [0003] At home and abroad, the methods for testing the corrosion of small organic molecules and metals under high temperature and vacuum are still blank. Only some test standards for volatile orga...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/78
CPCG01N21/783
Inventor 张育新高鸿姚克欣郑伟杨文丽高翔黄光孙董立超李南
Owner CHONGQING UNIV