Smoke density test device

Abstract

The invention discloses a smoke density test device. The smoke density test device comprises a combustion cabinet and a control cabinet, wherein a seal door, a combustion assembly and an optical circuit assembly are arranged on the combustion cabinet; the combustion assembly comprises a specimen bracket, and a radiating cone, a specimen box, a heat flow meter and an igniting needle which are arranged on the specimen bracket; the optical circuit assembly comprises a transmitting end and a receiving end. According to the smoke density test device, the percent that the light transmittance of smoke occupies the initial light transmittance is tested through the optical system; according to the principle, a specimen is exposed to a hot radiating source, generated smoke is collected in the optical circuit, and the specific optical density is calculated. The experiment better simulates the combustion behavior of the material in a real fire hazard environment and is helpful for studying the flame retardance of the material. Moreover, the device is low in cost, high in precision and suitable for the quantitative test of the flame retardance of various materials, and can be used by manufacturing and studying organizations, inspection departments and research and development organizations of various materials or products.

Description

technical field [0001] The present invention relates to a smoke density testing device, in particular to a smoke density tester for measuring the smoke production of materials based on the principle of measuring the smoke density as a percentage of the initial light transmission through an optical system. device. Background technique [0002] With the development of society, the increase of material wealth and population density, the frequency of fires and the resulting harm are also increasing, and the use of flame-retardant materials is one of the strategic measures to reduce and prevent fires; nearly 30 In recent years, countries have paid more and more attention to the process of flame retardancy of materials; because the combustion behavior of flame retardant materials in a fire is very complex, a single combustion test method cannot fully describe its combustion performance, so people try to Research on the testing and characterization methods of flame retardant mater...

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Problems solved by technology

[0002] With the development of society, the increase of material wealth and population density, the frequency of fires and the resulting damage are also increasing, and the use of flame-retardant materials is one of the strategic measures to reduce and prevent fires; nearly 30 In recent years, countries have paid more and more attention to the process of flame retardancy of materials; because the combustion behavior of flame retardant materials in a fire is very complex, a single combustion test method cannot fully describe its combustion performance, so people try to Research on the testing and characterization methods of flame retardant materials, and evaluate the flame retardant performance of flame retardant materials more completely from many aspects

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