Textile material sample carrying table for cone calorimeter

Abstract

The invention relates to a textile material sample carrying table for a cone calorimeter. The textile material sample carrying table comprises a square box and a sample pressing frame corresponding to an upper end opening of the box. A supporting plate capable of moving vertically is arranged in the box. A screw rod is arranged in a screwed mode through a nut fixedly arranged in the center of a bottom plate of the box. The upper end of the screw rod is connected with the supporting plate through a bearing. A heat preserving brick in which a temperature sensor is embedded is arranged on the supporting plate. Inserting plates are arranged at the two sides of the bottom of the square box. The square box is inserted in a height adjusting frame through the inserting plates. A plurality of locating holes distributed vertically are formed in the height adjusting frame. By changing a clamping rod to penetrate into the different locating holes, the height distancing from a tested sample to a fire source can be adjusted; the distance between the tested sample and the temperature sensor is achieved by screwing and adjusting the screw rod. The protecting function of garment materials can be predicted by monitoring temperature changes at different distances between the tested sample and the temperature sensor. An effective test means is provided for analyzing the relation among factors influencing the protective property of shielding fabric.

Description

technical field [0001] The invention relates to an experimental device for evaluating the thermal protection performance of fire-fighting clothing fabrics by using a cone calorimeter, in particular to a sample loading platform with an improved structure for carrying samples of textile materials to be tested. Background technique [0002] The cone calorimeter is a small-scale fire test device developed by NIST in the early 1980s for testing the combustion performance of materials. This instrument has the advantages of novel design, simple and accurate testing. The appearance of cone calorimeter is a very important progress in the history of fire test technology. ASTME1354, ISO5660-1, and ASTME1474 are all standards related to the use of cone calorimeters to test the combustion properties of materials. The biggest feature of the cone calorimeter is that the heat flow intensity in the fire is simulated by the cone heater, so that the material can be burned under quasi-fire con...

AI Technical Summary

Problems solved by technology

[0005] The original sample loading platform of the cone calorimeter can only adjust the distance between the sample (sample loading platform) and the conical heater (fire source) by adding or subtracting pads during the test, and it only serves The function of supporting and containing the sample cannot realize real-time monitoring of the temperature change of the sample and prediction of skin burn time

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