Foaming agent for sealing member pressure testing

A technology of foaming agent and sealing body, applied in the field of foaming agent, can solve the problems of darkening of sealing body gloss, inability to change properties, corrosion of metal sealing body, etc., achieve long foam duration, reduce labor cost, and high bubble efficiency Effect

Inactive Publication Date: 2015-04-29
LUDONG UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] 1. The foaming effect is not good. Detergents are produced for the decontamination effect, so the foam is often not very rich, and the foam bursts in a short period of time, which is not conducive to observation;
[0004] 2. Soapy w

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] A foaming agent for pressure testing of a sealed body, the raw materials are calculated by percentage, and include the following components:

[0015] 80 parts of water, 10 parts of polyethylene glycol, 8 parts of polyvinylpyrrolidone, 5 parts of polyvinyl alcohol, 7 parts of polylactic acid, 15 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 6 parts of fatty alcohol polyoxyethylene ether , 20 parts of alkanolamide, 16 parts of alkyl betaine, 8 parts of sodium fatty acid methyl ester sulfonate, 10 parts of lauryl dimethyl amine oxide, 3.5 parts of carboxymethyl cellulose, stearic acid cyclodextrin 7.5 parts, 1 part of lauryl glucoside, 41 parts of ethanol, 0.05 parts of methylisothiazolinone, 2.2 parts of glyceryl stearate, 1 part of glyceryl oleate, 4 parts of ammonium chloride, and 2 parts of sodium metaphosphate.

[0016] Preparation method: add polyethylene glycol, polyvinylpyrrolidone, polyvinyl alcohol, polylactic acid in deionized water and stir, afte...

Embodiment 2

[0018] A foaming agent for pressure testing of a sealed body, the raw materials are calculated by percentage, and include the following components:

[0019] 60 parts of water, 5 parts of polyethylene glycol, 1 part of polyvinylpyrrolidone, 9 parts of polyvinyl alcohol, 5 parts of polylactic acid, 20 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 3 parts of fatty alcohol polyoxyethylene ether , 1 part of alkanolamide, 9 parts of alkyl betaine, 20 parts of sodium fatty acid methyl ester sulfonate, 5 parts of lauryl dimethyl amine oxide, 8 parts of carboxymethyl cellulose, stearic acid cyclodextrin 1 part, 4.1 parts of lauryl glucoside, 50 parts of ethanol, 0.02 parts of methylisothiazolinone, 1.2 parts of glyceryl stearate, 5 parts of glyceryl oleate, 4 parts of ammonium chloride, and 1.5 parts of sodium metaphosphate.

[0020] The preparation method is the same as in Example 1, and will not be repeated here.

Embodiment 3

[0022] A foaming agent for pressure testing of a sealed body, the raw materials are calculated by percentage, and include the following components:

[0023] 90 parts of water, 3 parts of polyethylene glycol, 8 parts of polyvinylpyrrolidone, 2.5 parts of polyvinyl alcohol, 1 part of polylactic acid, 10 parts of fatty alcohol polyoxyethylene ether sodium sulfate, 18 parts of fatty alcohol polyoxyethylene ether , 6 parts of alkanolamide, 20 parts of alkyl betaine, 11 parts of sodium fatty acid methyl ester sulfonate, 7.5 parts of lauryl dimethyl amine oxide, 10 parts of carboxymethyl cellulose, stearic acid cyclodextrin 4.6 parts, 6.7 parts of lauryl glucoside, 33 parts of ethanol, 0.03 parts of methylisothiazolinone, 4 parts of glyceryl stearate, 0.5 parts of glyceryl oleate, 3 parts of ammonium chloride, and 0.2 parts of sodium metaphosphate.

[0024] The preparation method is the same as in Example 1, and will not be repeated here.

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PUM

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Abstract

The invention discloses a foaming agent for sealing member pressure testing. The foaming agent comprises water, polyethylene glycol, polyvinylpyrrolidone, polyvinyl alcohol, polylactic acid, sodium alcohol ether sulphate, primary alcobol ethoxylate, alkanolamide, lauryl betaine, fatty acid methyl ester sulfonate, N,N-dimethyldodecylamine-N-oxide, carboxymethylcellulose, stearic acid group cyclodextrin, dodecyl polyglucoside, ethyl alcohol, methylisothiazolinone, stearin, triolein, ammonium chloride, and sodium metaphosphate. The foaming agent provided by the invention has the advantages of high foaming efficiency, rich and stable foam, and no corrosion to a detected object; in addition, after the foaming agent is used, rust does not occur on the surface of the sealing member, and the sealing member is not required to be subjected to rust-proof treatment, so that the process is reduced and the labor cost is reduced.

Description

【Technical field】 [0001] The invention relates to a foaming agent, in particular to a foaming agent for pressure testing of a sealed body. 【Background technique】 [0002] Sealing bodies such as vacuum devices, sealing components, and pressure vessels, as well as metal or plastic tanks, pipes, and valves need to be pressure tested for their sealing performance before use. Nowadays, when carrying out pressure testing and monitoring on the sealing performance of the sealing body, the air pressure of about 0.01-0.05 MPa is generally charged in the container such as the sealing body first, and then the foaming agent is applied to the weld seam outside the container, and then the connection is observed. Where there are air bubbles, it needs to be treated or processed, so as to avoid the occurrence of poor sealing performance of the sealing body. Usually, the foaming agent used for pressure test monitoring of sealed ladders is generally: soapy water, detergent or cleaning agent pl...

Claims

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Application Information

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IPC IPC(8): B01F17/00G01M3/12C09K23/00
Inventor 徐胜广王彦力刘刚刘春萍刘希光纪春暖金仁成孙林
Owner LUDONG UNIVERSITY
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