1. The principle of horizontal method and vertical method.
The horizontal and vertical methods are two commonly used methods for determining the combustion properties of plastics. The horizontal method is a method to measure the combustion performance of plastics under the condition of horizontal test, mainly to test the combustion rate, combustion time, smoke density and other parameters of plastics. The vertical rule is a method for measuring the combustion performance of plastics under vertical test conditions, mainly testing the combustion rate, burning time, burning distance and other parameters of plastics in the vertical combustion direction. Both methods evaluate the combustion performance of plastics by observing their behavior during combustion.
2. Application of horizontal method and vertical method.
In practice, the choice between horizontal and vertical methods should be determined based on the specific testing needs and the characteristics of the plastic material. For example, for some thick plastic materials, it may be more representative to test them vertically, as in practice these materials are often subjected to heat or flame in the vertical direction. For some thin or small plastic materials, the horizontal method may be more suitable because it can better simulate the burning behavior of the material on a horizontal plane.
In addition, we also need to pay attention to the following points when conducting plastic combustion performance tests:
1.Preparation before the test: ensure that the test environment, test equipment, sample preparation and other links meet the requirements of the standard to ensure the accuracy and reliability of the test results.
2.Test operation: Strictly follow the operation steps specified in the standard to carry out the test, and control the test conditions, such as temperature, pressure, oxygen concentration, etc.
3.Data processing: accurately record and process the test data, calculate the combustion performance parameters as needed, and analyze and evaluate the results.
4.Interpretation of results: Combined with the actual application requirements, the test results are interpreted to provide basis and suggestions for the safe use of plastic materials.