Limiting Oxygen Index, referred to as LOI, is a test method used to evaluate the combustion performance and flammability of materials. This test evaluates the combustion performance and flammability of a material by measuring the minimum oxygen concentration at which the material burns in a mixture of oxygen and nitrogen, that is, the oxygen index.
In the limiting oxygen index combustion test, the test sample (usually a solid material) is placed in a combustion chamber and burned under certain combustion conditions. The gas mixture in the combustion chamber is a mixture of oxygen and nitrogen in a certain proportion, which can be adjusted through the gas control system. By adjusting the oxygen concentration, the minimum oxygen concentration for material combustion is measured, namely the oxygen index.
The limiting oxygen index combustion test can evaluate the combustion performance and flammability of materials, and provide quantitative data as the basis for the design and production of materials. Generally, the higher the oxygen index, the better the combustion performance of the material and the lower the flammability; on the contrary, the lower the oxygen index, the worse the combustion performance of the material and the greater the flammability.
The limiting oxygen index combustion test is widely used in the evaluation of the combustion performance of various materials, such as plastics, rubber, cables, insulating materials, building materials, etc. Especially in the field of building materials, the limiting oxygen index combustion test is widely used to test the combustion performance of flammable materials to ensure the safety and reliability of building materials.
In short, the limiting oxygen index combustion test is a test method used to evaluate the combustion performance and flammability of materials. sex.