Monomer combustion testing machine for building materials.
1. Definition and Use.
Building material monomer combustion testing machine, also known as building material monomer combustion test device, is an experimental equipment used to test the combustion performance of building materials. It is mainly used to evaluate the flame retardant properties of building materials, as well as the combustion behavior in fires.
Second, the equipment composition.
The building material monomer combustion testing machine is usually composed of the following main parts:
1.Combustion chamber: This is the main part of the equipment and is used to simulate the combustion environment of building materials.
2.Fuel** System: Used to provide the fuel needed for the experiment.
3.Heating system: used to maintain the temperature of the combustion chamber.
4.Emission system: used to treat fumes and gases from combustion.
5.Control system: used to control the operation of equipment and the collection of data.
Third, the working principle.
During the experiment, the building material is placed in a combustion chamber, which is then heated to a predetermined temperature and exposed to a certain oxygen environment. Then, the material is ignited, and its combustion characteristics, such as combustion rate, flue gas generation, etc., are observed and recorded. This data can be used to evaluate the flame retardant properties and fire hazard of materials.
Fourth, the operation method.
The following steps need to be followed to operate a building material monomer combustion testing machine:
1.Prepare the materials for the experiment: Select the sample of the building material to be tested and make sure that its size and shape meet the requirements of the experiment.
2.Start the device: Turn on the power and control panel to start the device.
3.Set parameters: Set the temperature of the combustion chamber, oxygen concentration and other parameters according to the experimental requirements.
4.Placement of the sample: The prepared sample of building materials is placed on the holder of the combustion chamber.
5.Start Experiment: Press the start button and the device will automatically perform the experiment. The operator should observe the experimental process and record the necessary data.
6.End the experiment: The device automatically stops the experiment when the sample burns completely or when the predetermined experimental time is reached. The operator should turn off the equipment and power.
7.Data processing: Based on the collected data, the combustion properties of building materials are calculated and analyzed.
5. Test steps.
When performing specific experiments, you can refer to the following steps:
1.Samples are taken of the building materials to be tested to ensure that the samples are representative.
2.Pre-treatment of the sample, such as cleaning and drying.
Main technical parameters:
Instrument composition: including combustion chamber, test equipment (trolley, fixed frame, burner, gas hood, collector and conduit), smoke exhaust pipe, flue gas collection system, comprehensive measurement system device, data collection and analysis device, gas control device (the overall equipment placement space is 6100mm high, 7100mm long, 6000mm wide, including the control room space.
A combustion chamber:
Combustion chamber size: long (3.)0±0.2) m width (3.).0±0.2) m high (2.)4±0.1) m, the combustion chamber is built with a brick wall.
At the top of the room, there is a gas collection hood and smoke exhaust pipe connected to the sampling pipe, and the heat released by the combustion of the sample and the combustion products are discharged from the smoke exhaust pipe during the test.
An opening is provided on one side of the combustion chamber to facilitate the trolley to be moved into the combustion chamber from the adjacent laboratory, and the size of the opening (frame) is: width 1470mm x height 2450mm, and there is space for air to enter and exit naturally under the trolley; There are observation windows on the two walls facing the long and short wings of the vertical test sample.
There is a door on the side of the combustion chamber that can be closed to facilitate the cleaning of the test residue in the room after the test.
After the trolley is in place in the combustion chamber, the distance between the long wing test surface in contact with the U-shaped card groove and the wall of the combustion chamber is (21±0.1) m, the distance is the vertical distance between the long wing and the wall faced, and the opening area of the combustion chamber (excluding the air inlet at the bottom of the trolley and the smoke exhaust opening of the gas collection hood) is 005m2 as shown in Figure 4.
Fuel: Commercial propane gas, 95% purity.