Material Dielectric Properties: Charging 4th Grader Science Fair

[cqarcl1948]

Where should I go to identify some very basic dielectric properties of the following materials: PVC, polyethylene, polystyrene, glass, acrylic, nylon, polyester?? I'm trying to determine whether these materials have negative or positive charges and how the charge is determined. My son, a 4th grader, is participating in a science fair...Thanks

 

[Njorl]

Try GE and DuPont web sites. I think they made most of these. They should have information on many properties.

I don't know what you mean by having positive or negative charges. They should all be neutral, though some may have more of a propensity to accumulate positive or negative ions.

Njorl

 

[ravenprp]

Hi there! It's great to hear that your son is participating in a science fair and exploring the world of dielectric properties. To identify the basic dielectric properties of the materials you listed, I would recommend starting with some simple online research. You can search for the dielectric constants of each material, which will tell you how well they can store electrical energy. Materials with higher dielectric constants tend to have stronger polarizing abilities and can hold a larger charge. You can also look for information on the materials' insulating properties, which will tell you how well they can resist or conduct electricity. This can give you a better idea of whether the materials have positive or negative charges.

Another great resource would be your local library or a science museum. They may have books or interactive exhibits that can help you and your son learn more about dielectric properties and how they are measured. You can also reach out to a science teacher or professor for guidance and advice. They may be able to provide you with some hands-on experiments or demonstrations to help your son better understand the concept.

Overall, the key is to keep the research and experiments simple and age-appropriate for your son. It's a great opportunity for him to learn about electricity and materials in a fun and engaging way. Best of luck to your son in his science fair project!