Leakage detection solution as well as preparation method and application thereof
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A technology of leak detection and mass percentage, which is applied in the field of air tightness inspection, can solve problems such as difficulty in air tightness inspection and failure to use normally, and achieve the effects of good foaming performance, good antirust performance and good antifreeze performance
Inactive Publication Date: 2018-09-04
韩新民 +1
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[0003] The leak detection fluid currently used is an aqueous solution with water as the base and chemical reagents. This common leak detection fluid cannot be used normally due to freezing in sub-zero low temperature environments. Air tightness testing brings difficulties
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[0066] According to a second aspect of the present invention, there is provided a method for preparing the above-mentioned leak detection liquid, which includes the following steps: fully mixing a surfactant, a thickener, an antifreeze, a rust inhibitor and water to obtain a leak detection liquid.
[0067] In a preferred embodiment, the preparation of the leak detection liquid includes the following steps:
[0068] (a) Dissolve the thickener in water.
[0069] (b) The surfactant, antifreeze and rust inhibitor are thoroughly mixed with the solution obtained in step (a) to obtain a leak detection liquid.
[0070] In a preferred embodiment, the preparation of the leak detection liquid includes the following steps:
[0071] (a) Dissolve xanthan gum in dewatered water.
[0072] (b) Cocoyl diethanolamide, oleoyl sarcosine ethanol, cocoyl acid ethanolamine, fatty acid sodium soap and glycerol are thoroughly mixed with the solution obtained in step (a).
[0073] According to the third aspect of t...
Embodiment 1
[0076] A leak detection liquid includes the following components according to mass percentage: 0.5% of oleoyl sarcosinate sodium, 4% of xanthan gum, 0.2% of coco diethanolamide, 55% of triethanolamine, and 40.3% of water.
Embodiment 2
[0078] A leak detection liquid comprises the following components according to mass percentage: 22.5% of fatty acid potassium soap, 0.08% of polyvinyl alcohol, 18.5% of oleoyl sarcosine ethanolamine, 30% of triethanolamine, and 28.92% of water.
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Abstract
The invention provides leakage detection solution as well as a preparation method and application thereof and relates to the technical field of air tightness tests. The leakage detection solution comprises the following components by weight percent: 0.5-22.5% of a surfactant, 0.08-4% of a thickening agent, 0.2-18.5% of an antirust agent, 30-55% of an antifreezing agent and the balance of water; preferably, the leakage detection solution comprises the following components by weight percent: 5.5-16.5% of a surfactant, 0.3-2% of a thickening agent, 4.5-13.5% of a antirust agent, 35-50% of an antifreezing agent and the balance of water; and more preferably, the leakage detection solution comprises the following components by weight percent: 6.5-11.5% of a surfactant, 0.5-0.6% of a thickening agent, 5.5-9.5% of an antirust agent, 40-45% of an antifreezing agent and the balance of water. The leakage detection solution provided by the invention has better foamability, anti-rust performance and anti-freezing performance.
Description
Technical field [0001] The invention relates to the technical field of air tightness inspection, in particular to a leak detection liquid and a preparation method and application thereof. Background technique [0002] The air tightness inspection of the brake system during vehicle maintenance is very important. A simple and practical method is to apply a foaming leak detection liquid. If there is a leak, the gas will foam the sprayed liquid at the leak. The early leak detection fluid used was soapy water, but due to the unstable performance of soapy water and no anti-rust performance, the soapy water was replaced by an anti-rust leak detection fluid produced by a professional manufacturer. [0003] The leak detection liquids currently used are all aqueous solutions with water as the matrix and chemical reagents. This ordinary leak detection liquid cannot be used normally due to freezing in a sub-zero temperature environment. Airtightness testing brings difficulties. Summary of th...
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