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An experimental test device for fire spread behavior of thermoplastic materials

A thermoplastic material and testing device technology, applied in the direction of using combustion for chemical analysis, etc., can solve the problems of increasing the fire risk and the rate of fire spread, and achieve the effect of repeatable operation, easy access to materials, and reasonable device structure

Inactive Publication Date: 2015-11-25
CHINA JILIANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This experimental device can be used to measure the fire spread characteristics of thermosetting materials. However, during the burning process of thermoplastic materials, due to the melting and dripping of materials, the situation of simultaneous burning of solid surface fire and pool fire usually occurs, which greatly increases the risk of fire and rate of fire spread

Method used

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  • An experimental test device for fire spread behavior of thermoplastic materials
  • An experimental test device for fire spread behavior of thermoplastic materials
  • An experimental test device for fire spread behavior of thermoplastic materials

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0014] figure 1 It is a front view of a thermoplastic material fire spread rate experimental testing device of the present invention; figure 2 It is a side view of the experimental device of the present invention. As shown in the above-mentioned accompanying drawings, a kind of thermoplastic material fire spread rate experimental testing device of the present invention comprises sample support 12, molten liquid solidification system 16 and measurement and control system 23; Described sample support 12 is frame structure, adopts stainless steel, surface Apply fireproof paint, the width of each side of the frame is 3cm, the overall width and height are 1.5m × 2.0m, the bottom of the frame is supported by a base 11, and the base 11 extends 40cm to two directions perpendicular to the sample holder 12, to ensure that it is installed Measure the stability of the sample holder 12 of the sample 15, the surface of the upper frame of the sample holder 12 has a through installation hol...

Embodiment 2

[0017] image 3 It is a front view of the sample holder structure in Example 2; Figure 4It is a side view of the sample support structure in embodiment 2; in the present embodiment, the tested sample 15 is an XPS extruded plastic board, and a sample frame 32 is added inside the sample support 12, and there are fixing holes 33 on the upper part of the sample frame 32 and the left and right side edges, The size of the sample frame 32 is 1.6m×1.0m. The left and right sides of the sample frame 32 are connected to the sample holder 12 by connecting rods 29. The sample frame 32 can rotate along the connecting rod 29. The fixing button 30 on the board can fix the sample frame 32 at a certain angle, and the sample frame 32 is provided with an angle recorder 31 near the connecting rod 29 to record the angle of the measured sample 15; the fixing holes 33 are long strips with a width of 1 cm and an interval of 1 cm Arrangement, using screws 27b to fix the tested sample 15 on the sample...

Embodiment 3

[0019] In this embodiment, a quartz heat shield is added at a position 6mm away from the surface of the tested sample 15 on the side of the tested sample 15 facing the partition b20, and the infrared thermal imager and the video camera are arranged parallel to the sample surface with a distance of 2m and a height of The other settings are the same as in Embodiment 1; this embodiment can simulate the behavior of flame spread on the surface of thermoplastic materials in the slit.

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Abstract

The invention discloses an experimental test device for the fire spread characteristic of a thermoplastic material. The experimental test device is characterized in that a molten liquid solidifying system is arranged at the lower part of a tested sample; the dropping molten liquid of the thermoplastic tested sample can be cooled in real time in an experiment; the pool fire formed by the molten liquid is decoupled from the fire spread phenomenon of the tested sample to facilitate intensive study on the coupling action mechanism between the fire spread phenomenon on solid surface and the pool fire at the lower part in the fire spread process of the thermoplastic material; the samples can be arranged freely according to the required layer number and arrangement mode, and thus the layer number, thickness, structure and surface conditions of the samples can be unrestrictedly adjusted according to the test need; the testable samples are more diverse than those of an existing experimental device, and the device is more flexible to use. The device disclosed by the invention has the advantages of reasonable structure, easily available materials, stable working performance and simplicity in operation, and can realize repeated operation and meet the needs of large-scale industrial production.

Description

technical field [0001] The invention belongs to the technical field of safety engineering testing, and in particular relates to an experimental testing device for disaster combustion. Background technique [0002] Thermoplastics are plastics that soften when heated and harden when cooled. Common thermoplastic materials are polyvinyl chloride, polyethylene, polypropylene, etc. At present, it has been widely used in heat insulation, heat preservation, waterproof, sound absorption, shock absorption and so on. Thermoplastic materials are accompanied by melting and dripping during the combustion process, and the dripping high-temperature solution will promote the spread of fire, which is a great fire hazard. [0003] At present, the experimental devices used to measure the fire spread of materials mainly include the surface flame spread test device of building component products made according to the relevant standards of "Building Material Surface Combustion Test" BS476-7. Th...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01N31/12
Inventor 黄冬梅王信群
Owner CHINA JILIANG UNIV
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