Device and method for realizing acid and alkali liquor resistance penetration test of chemical protective clothing

Abstract

The invention relates to a device and a method for realizing acid and alkali resistant penetration test of chemical protective clothing. The device comprises a test chamber and a collection chamber, wherein a fabric test sample to be tested is clamped between the test chamber and the collection chamber, two sides of the fabric test sample are respectively in close contact with the test chamber and the collection chamber, and the top of the test chamber is provided with a test liquid inlet; a test liquid outlet is formed in the bottom of the test chamber, a collected liquid closed-loop outlet is formed in the front side of the collection chamber, a collected liquid closed-loop inlet is formed in the rear side of the collection chamber, and the collected liquid closed-loop outlet is connected with the collected liquid closed-loop inlet through a collected liquid guide pipe and a circulating pump; and the collected liquid closed-loop outlet, the collected liquid guide pipe, the circulating pump and the collected liquid closed-loop inlet form a closed-loop test loop; a pH value analyzer is inserted into a collected liquid inlet in the upper part of the collection chamber and is connected with a CAD test data collection end. According to the invention, the acid and alkali resistant permeability of the chemical protective clothing can be tested, the operation is simple and convenient, the convenience of the test is increased, and the automation degree of the test is improved.

Description

[technical field] [0001] The invention belongs to the technical field of analytical chemistry, in particular to a device and a method for realizing the acid and alkali liquid penetration test of chemical protective clothing. [Background technique] [0002] At present, the tests on the liquid and gas permeation resistance of chemical protective clothing on the market mainly refer to ISO6529-2013: Protective clothing–Protection against chemicals–Determination of resistance of protective clothing materials to permeation by liquids and gases. Some of the basic requirements are put forward for the devices for testing the resistance to liquid and gas permeability of chemical protective clothing, and in Appendix C are listed the design diagrams of several test devices that meet the requirements of the standard. In principle, as long as the device specifications can meet the requirements specified in the standard The basic requirements of the standard, the device can be used to meet...

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Problems solved by technology

[0002] At present, the tests on the liquid and gas permeation resistance of chemical protective clothing on the market mainly refer to ISO6529-2013: Protective clothing–Protection against chemicals–Determination of resistance of protective clothing materials to permeation by liquids and gases. Some of the basic requirements are put forward for the devices for testing the resistance to liquid and gas permeability of chemical protective clothing, and in Appendix C are listed the design diagrams of several test devices that meet the requirements of the standard. In principle, as long as the device specifications can meet the requirements specified in the standard The basic requirements of the standard, the device can be used to meet the requirements of this standard chemical protective clothing resistance to liquid, gas penetration test, but this standard does not provide the design specifications of the test device

At the same time, since the standard covers 3 different test methods (test liquid-collected liquid, test gas-collected gas, test liquid-collected gas), and there are many choices for testing chemical substances and collecting chemical substances, the standard is listed in Appendix C The schematic diagram of the test device listed in only covers some components, but the requirements for some detailed components in the device are not clear or mentioned

[0003] Therefore, at present, there is no clear reference direction in the industry on how to implement the basic requirements of the test equipment covered by the standard and apply it to actual testing.

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