Portable fast detector for foaming agent of foam plastics

Abstract

A portable rapid detector for foaming agent in foamed plastics, comprising a carrier gas tank (1), a switching valve (2), a chromatographic column chamber (3) and an ionization pool (4), the chromatographic column chamber (3) is A gaseous foaming agent injection port (5) is provided, the output end of the chromatographic column chamber (3) is connected to the input end of the ionization cell (4), and the signal output end of the ionization cell (4) is connected to the signal control board (6) The corresponding input terminals are connected, and the signal control board (6) is connected with the computer for analysis and control through the communication interface. The gas outlet (8) of the furnace (7) is connected with another air inlet of the conversion valve (2), and the gas decomposed in the solid-liquid sample cracking furnace (7) is combined with the carrier gas entering the carrier gas inlet. into the column compartment (3). The invention has the advantages of small size, light weight, portability, easy operation and high sensitivity.

Description

technical field [0001] The invention relates to a gas detector, in particular to a plastic blowing agent detector, in particular to a gas blowing agent which can detect gas blowing agent, and simultaneously detect liquid blowing agent and solid foam samples. A portable foam blowing agent rapid detector for rapid detection of blowing agent components. Background technique [0002] With the advancement of science and technology and the improvement of human life quality, foam plastic products are used more and more widely, and domestic production is increasing year by year. As we all know, in the production process of such products, volatile substances such as fluorine-containing hydrocarbons, alkanes, and carbon dioxide are generally used as blowing agents, and basically remain in the micropores of the rigid foam. Among them, volatile blowing agents represented by fluorine-containing hydrocarbons have many advantages such as low toxicity, stable chemical properties, low gas ...

AI Technical Summary

Problems solved by technology

[0009] The purpose of the present invention is that the current gas chromatography can only detect the gaseous foaming agent, but cannot quickly detect the foaming agent composition in liquid and solid foams or the foaming agent must be vaporized or extracted in the gaseous state of the solid foam during detection. The foaming agent causes complex pre-procedures, high cost, and cannot be quickly measured on site. At the same time, the accuracy of various existing gasification methods is not high. A portable foaming foaming method based on gas chromatography detection method is designed. rapid detection instrument

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