How to Keep Liquid Hot in a Non-Thermos Container

Styrofoam cups are made from insulating material.
••• Jupiterimages/ Images

If you’re camping or alternatively find yourself somewhere cold without a thermos flask, there are various techniques you can employ to keep your drink warm. For portability, the best thing you can do is stock up on Styrofoam cups from the nearest coffee shop. If you're at home, use a heat bag that can be warmed up and placed around the container; this method will keep your drink warm the longest, but you'll need access to a microwave.

    Make the drink at a hotter temperature than you would normally drink, if possible. If you're making it before going out, prepare it at the last possible minute so that it has less time to cool down. Pour the liquid into a glass container rather than a plastic one, as this will retain the heat for longer.

    Pour the liquid into a Styrofoam cup. This is an insulating material that will retain the heat for longer. Alternatively, pour the liquid into a container and wrap a layer of polystyrene around it.

    Place a heat bag on one side of the container and wrap a towel around it.

    Things You'll Need

    • Glass container
    • Styrofoam cup
    • Polystyrene
    • Heat bag
    • Towel


    • Whatever container you use, it should be airtight to prevent heat from escaping.

Related Articles

How to Build a Container Where Ice Will Not Melt for...
How to Make a Thermometer for Kids
Science Projects: How to Keep Ice from Melting
How to Convert Starch to Sugar
How to Make Plastic
How to Make Crystals Grow Faster
Examples of Condensation in Everyday Life
How to Determine a Calorimeter Constant
How to Make Slime Without Borax or Liquid Starch
How to Separate Ink From Water
Homemade Ice Keeper Science Project
How to Make Dry Ice Last Longer
How to Make a Coffee-cup Calorimeter
What Is the Fastest Way to Cool a Soda for a Science...
Heat Retention Science Projects
How to Make Rocket Fuel out of Sugar
Measuring Wet Bulb Temperature
How to Dry Desiccant
Styrofoam Vs. Plastic Cups
Different Ways to Melt Ice Cubes

Dont Go!

We Have More Great Sciencing Articles!