Device for measuring variation of internal temperature during combustion of polymer material

Abstract

The invention discloses a device for measuring the variation of internal temperature during combustion of a polymer material. The device comprises a fixing seat for fixing a polymer material sample, flame-jet equipment for jetting flame onto the surface of the polymer material sample, and a digital recorder for measuring the internal temperature during combustion of the polymer material sample under the action of flame, wherein a thermocouple is embedded in the polymer material sample, and connected with the digital recorder through a thermocouple compensation wire. The device is relatively low in manufacturing cost and relatively simple to operate, and can be utilized for measuring and recording the dynamic variation of the internal temperature with time during combustion of the polymer material under the action of flame in an in-situ and real-time manner, and quantitatively expressing the impact of the behavior of material combustion into charcoal on heat transfer according to experiment data. Therefore, a brand-new quantitative analysis and expression method is provided for research on flame-retardant polymer materials.

Description

technical field [0001] The invention relates to an experimental device, in particular to a device for measuring the internal temperature change of a polymer material when it is burned. Background technique [0002] One of the main problems in the practical application of organic polymer materials such as plastics, rubber, and fibers is flammability. How to test the flame retardancy of polymer materials is one of the important research directions in this field. At present, there are many experimental methods used to characterize the combustion performance of polymer materials at home and abroad. The flame retardant mechanism of materials, especially in the condensed phase, is often determined by the char formation behavior of materials (the amount of char formation and the quality of the char layer). ) for analysis. It is generally believed that if the amount of carbon residue generated during material combustion or thermal decomposition is greater, and the surface of the ca...

AI Technical Summary

Problems solved by technology

However, this traditional research method is only a qualitative theoretical analysis. To what extent the carbon layer generated during thermal decomposition of polymer materials can prevent heat transfer and protect materials from flames. There is no reliable research at home and abroad. Experimental device and method

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