Method for confirming gas content in high-viscosity liquid

Abstract

The invention relates to a method for confirming the gas content in high-viscosity liquid, which comprises the following steps of: detecting and recording the pressure change value of the high-viscosity liquid in a cavity before and after the movement of a guide rod through a pressure sensor, and detecting and recording the density change value corresponding to the high-viscosity liquid flowing out of an output port when the pressure change value is detected and recorded by a densimeter; establishing a pressure and density function relation model by using the pressure and density change values, and generating a functional expression in which the X axis is pressure and the Y axis is density y=bx+c; and calculating and recording a gas content change value by adopting the density change difference value, establishing a pressure and gas content function relation model by utilizing the pressure and gas content change value, and generating a functional expression y=bx+c, in which the X axis is the pressure and the Y axis is the gas content. According to the invention, the pressure change value of the high-viscosity liquid in the cavity before and after the movement of the guide rod detected by the pressure sensor is used as an electric signal to calibrate the gas content in the cavity, and the relative content of the gas in the high-viscosity liquid in the cavity is indirectly detected by combining the programmable technology of the control device.

Description

Technical field [0001] The present invention relates to a gas content confirmation method in a high viscosity liquid for detecting a gas content in a high viscosity liquid, mainly used for dual component or single component high viscosity liquid such as polyurethane, adhesive, hot melt glue. Dynamic gas content detection. Background technique [0002] The two-component polyurethane, adhesive, hot melt adhesive, etc. in high molecular resin materials are all high viscosity liquid foam articles, mainly by chemical foaming or physical foaming methods, add foams in raw materials. When the agent, the reaction is carried out to obtain the article. However, the foaming magnification of chemical foaming or physical foam is limited, or the raw material defines a product that cannot obtain a higher foaming magnification. If the gas can be mixed into a high viscosity liquid by mechanically stirring in the raw material, a quantity is added. Gas, achieving chemical foaming or physical foaming...

AI Technical Summary

Problems solved by technology

[0009] The invention discloses a method for confirming the gas content in a high-viscosity liquid, which overcomes the current situation that the existing detection device can only use acoustic testing means to detect the bubble content and cannot use pressure detection, and uses a pressure sensor to detect the pressure change value of the high-viscosity liquid Indirect detection of gas content in high-viscosity liquids, mainly used for dynamic gas content detection in two-component or single-component high-viscosity liquids such as polyurethane, adhesives, and hot melt adhesives

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