Method for Determination of Auto-Ignition Temperature of Fire-Resistant Oil
The auto-ignition temperature of fire-resistant oil refers to the minimum temperature at which fire-resistant oil, under the action of no external ignition source, reaches self-combustion due to its own oxidative heat generation. It is one of the core indicators for evaluating the safety performance of fire-resistant oil.
The auto-ignition temperature of fire-resistant oil is affected by its purity, additive composition and moisture content. Excessive impurities or moisture may lead to a decrease in the auto-ignition temperature.
Purpose of the Experiment：
Define the safe critical temperature of fire-resistant oil and provide a scientific basis for its storage, use, and the design of related equipment.
Accurately determine the minimum temperature at which fire-resistant oil spontaneously ignites without an external ignition source, and obtain key safety performance data.
Provide references for the control of fire-resistant oil storage environments and the temperature setting of transportation systems, so as to avoid fire risks caused by oil temperature approaching or reaching the auto-ignition temperature.
Experimental Instruments & Samples：
Experimental Samples：Fire-resistant oil
Experimental Instrument：SH706B Automatic Self-ignition Point Tester
testing method：
Set all parameters properly. First, draw the sample into the sampler according to the sampling procedure, with a sample volume of 250 μL each time. Place the sampler on the instrument's sampling mechanism. During one experimental cycle, the instrument can automatically perform continuous sampling for 3 times. If the auto-ignition temperature is still not detected after 3 samplings, the instrument will automatically end this test and then heat up automatically to conduct the test at the next temperature.Place the flask into the furnace chamber, ensuring that the temperature sensors in the upper, middle, and lower zones are closely attached to the outer wall of the flask. Close the furnace lid and click the "Start" button. The instrument will automatically complete steps such as heating, temperature stabilization, sampling, timing, and auto-ignition temperature detection without manual intervention.After the experiment is completed, results will be generated and printed automatically. After the test, wait until the temperature drops to 100℃ below the expected ignition point before conducting the test for the second sample.
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