Asked by: Gleice Agadzhanov
home and garden indoor environmental quality

What causes plastic to expand?

Last Updated: 30th March, 2020

Plastics are made up of van-der-wallforces(secondary bonding) which is used to join the already presentbonds (primary bonds). The tech details can be found here :José Luis Giordano . So, when the temperature increases, thebonds breaks, which makes the plastic expand.

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Similarly, does plastic expand?

Yes, if a plastic shrinks upon heating, it willusually expand when cooled within that same range. Thisphenomenon is known as negative thermal expansion (NTE), andis seen in other materials besidesplastics/polymers.

does plastic shrink when hot? When reheated, the polymer tends to soften and getgummy, but does not shrink. Certain polymerplastics have the ability to shrink when heated dueto their manufacturing process.

Accordingly, does plastic expand more than metal?

If you're simply asking about the magnitude of thermalexpansion, then plastics typically have a largercoefficient of thermal expansion compared to metals.So, subjected to the same change in temperature, a plasticwill generally expand more (or contract more)than a metal. However, one is plastic and oneis metal.

Does heat cause things to expand or contract?

When a material is heated, the kinetic energy ofthat material increases and its atoms and molecules move aboutmore. This means that each atom will take up more space due to itsmovement so the material will expand.

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Does nylon expand?

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Does water expand when heated?

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Does water expand when frozen?

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What metal does not expand when heated?

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