| 1. | :Wood is also a much better thermal insulator than concrete or brick.
 
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 | 2. | The outer vessel is evacuated with the vacuum acting as a thermal insulator.
 
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 | 3. | Asbestos is a mineral that was popular as a thermal insulator.
 
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 | 4. | Plastics are very good thermal insulators and are therefore difficult to cool quickly.
 
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 | 5. | Crust can form on the corium mass, acting as a thermal insulator and hindering thermal losses.
 
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 | 6. | Wood also has the property of being a good thermal insulator ( as is plastic ).
 
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 | 7. | In addition to this he also made extensive researches on thermal insulators and technology of glazed tile manufacture.
 
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 | 8. | It does not retain water, is a thermal insulator even when wet and can resist solar radiation effectively.
 
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 | 9. | In central Africa, thermal insulator.
 
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 | 10. | :: Perhaps your friends were confusing aluminum foil with mylar foil, which IS used effevtively as a thermal insulator.
 
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