If your paper towel caught fire in the microwave, it is likely because of a phenomenon called "thermal runaway." This can occur when certain materials, such as paper towels, are heated in a microwave and reach a temperature high enough to ignite or combust.
There are a few reasons why this might happen:
Absorption of Microwaves: Paper towels are made of cellulose fibers, which can absorb microwave energy. When you place a paper towel in the microwave, the water molecules within the towel can quickly absorb the microwave energy, leading to localized heating.
Lack of Moisture: If the paper towel is entirely dry or has low moisture content, it can heat up rapidly without any cooling effect, increasing the risk of ignition.
Concentration of Heat: In some cases, if the paper towel is folded or stacked in a way that concentrates the heat in a specific area, that area may become hot enough to ignite.
Overheating: Microwaving a paper towel for too long can cause it to overheat and eventually catch fire.
To avoid this issue, here are some safety tips when using paper towels in the microwave:
Moisten the Paper Towel: Before placing a paper towel in the microwave, dampen it slightly. This will help prevent rapid heating and reduce the risk of combustion.
Use Microwave-Safe Dishes: When heating food or liquids in the microwave, use microwave-safe dishes and covers to minimize the chances of thermal runaway.
Avoid Long Cooking Times: Be cautious with extended cooking times when using paper towels or any other dry materials in the microwave.
Monitor the Microwave: While heating or cooking with paper towels in the microwave, keep an eye on the process to detect any signs of smoke or burning.
Practice Caution: If you see smoke or suspect the paper towel is close to catching fire, stop the microwave immediately and remove the paper towel using oven mitts or tongs.
Remember, the microwave is a powerful appliance, and it's essential to use it safely and follow the manufacturer's guidelines for cooking and heating various materials. If you experience a fire in the microwave or any other serious malfunction, it's crucial to unplug the appliance and seek professional assistance or replace the unit if needed.