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Isotopic positioning and detecting method for micro-nano production dust leakage sources

A detection method, micro-nano technology, applied in the direction of detecting the appearance of fluid at the leakage point, measuring radiation, measuring devices, etc., can solve the problems of no application of dust leakage, incomplete applicability of dust leakage, etc., and achieve high accuracy and reliability, cost reduction effect

Inactive Publication Date: 2013-06-26
NANJING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This type of method is generally only aimed at the detection of gas leakage. The current technology has incomplete applicability to dust leakage and has not been applied to the detection of dust leakage.

Method used

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  • Isotopic positioning and detecting method for micro-nano production dust leakage sources
  • Isotopic positioning and detecting method for micro-nano production dust leakage sources

Examples

Experimental program
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Effect test

Embodiment 1

[0034] Commercialized carbon-14 labeled peptides were used to replace part of the peptides in the surface modifier, and mixed evenly with other conventional surface modifiers in proportion, including 0.2% aluminate DL-411 coupling agent, silane KH-570 coupling agent Joint agent 0.2%, stearic acid 0.3%, absolute ethanol 0.5%, deionized water 0.2%, polypeptide 0.5%. Wherein, the dosage of carbon-14 labeled polypeptide is 1 μCi / kg of radiation per kilogram of nanopowder for proportioning. In the surface modification equipment, 100kg of nano titanium dioxide semi-finished products to be used in cosmetics are surface modified with a well-proportioned surface modifier containing carbon-14 labeled polypeptide. The process parameters of surface modification equipment are the same as those of conventional modification, namely: temperature 60 o C±5 o C, the speed is 180 rpm. Transfer the modified titanium dioxide semi-finished product to the jet mill for pulverization and dispersion....

Embodiment 2

[0036] Commercialized carbon-14 labeled peptides were used to replace part of the peptides in the surface modifier, and mixed uniformly with other conventional surface modifiers in proportion, including 0.3% of aluminate DL-411 coupling agent, 0.3% of silane KH-570 coupling agent Joint agent 0.3%, stearic acid 0.4%, absolute ethanol 0.6%, deionized water 0.3%, polypeptide 0.6%. Among them, the amount of carbon-14 labeled polypeptide used is 4.5 μCi / kg of radiation per kilogram of nanopowder for proportioning. In the surface modification equipment, 100kg of nano titanium dioxide semi-finished products to be used in cosmetics are surface modified with a well-proportioned surface modifier containing carbon-14 labeled polypeptide. The process parameters of surface modification equipment are the same as those of conventional modification, namely: temperature 60 o C±5 oC, the speed is 180 rpm. Transfer the modified titanium dioxide semi-finished product to the jet mill for pulver...

Embodiment 3

[0038] Replace the polypeptide in the surface modifier with a commercial carbon-14 labeled polypeptide, and mix it uniformly with other conventional surface modifiers in proportion, including 0.4% aluminate DL-411 coupling agent, silane KH-570 coupling agent 0.4%, stearic acid 0.4%, absolute ethanol 0.8%, deionized water 0.4%, amino acid 0.8%. Among them, the amount of carbon-14 labeled polypeptide used is 7.8 μCi / kg of radiation per kilogram of nanopowder for proportioning. In the surface modification equipment, 50kg of nano titanium dioxide semi-finished products to be used in cosmetics are surface modified with a well-proportioned surface modifier containing carbon-14 labeled polypeptide. The process parameters of surface modification equipment are the same as those of conventional modification, namely: temperature 60 o C±5 o C, the speed is 180 rpm. Transfer the modified titanium dioxide semi-finished product to the jet mill for pulverization and dispersion. After the p...

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Abstract

The invention provides an isotopic positioning and detecting method for micro-nano production dust leakage sources. The isotopic positioning and detecting method mainly includes links of uniformly mixing isotopically labeled compounds with surfactants for powder; modifying surfaces of semi-finished powder; producing modified isotopically labeled powder; detecting the concentration of radioactive dust in a production procedure; and drawing a spatial distribution graph of the concentration of the dust in a production region and the like. The isotopic positioning and detecting method has the outstanding advantages that the dust leakage sources in various complicated production lines can be accurately positioned; a network structure for the concentration of the dust of an integral workshop can be established, and data support can be provided for an enterprise to establish a critical dust control region; and as the dust does not completely flow along with gas, detection based on the radioactivity of the dust is practical as compared with detection based on radioactive gas, and the isotopic positioning and detecting method is high in accuracy and reliability.

Description

[0001] technical field [0002] The invention relates to an isotope detection method for the location and detection of dust leakage sources in micro-nano production, in particular to a detection method for dust leakage on a production line of micro-nano powders, and a method for detecting the leakage source of production dust by using carbon-14 isotope location method, and a method for isotope labeling and leak detection of powder products. Background technique [0003] The methods of pipeline leakage detection can be roughly divided into the following four categories: The first category is based on the manual inspection method, in which experienced technicians carry detection equipment or trained animals to detect and locate pipeline leaks in sections. This type of method has the characteristics of high positioning accuracy and low false alarm rate, but it is difficult to find the leakage of fine dust on the pipeline of the production line and the leakage of positions that ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01M3/20G01T1/29
Inventor 杨毅茆平王正萍
Owner NANJING UNIV OF SCI & TECH